HomeMy WebLinkAboutRES 2026-08PLANNING COMMISSION
RESOLUTION NO. 2026-08
A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF DIAMOND
BAR, CALIFORNIA, APPROVING DEVELOPMENT REVIEW PLANNING CASE
NO. PL2025-47 TO REMODEL THE EXTERIOR AND CONSTRUCT A 1,647
SQUARE -FOOT FIRST -FLOOR ADDITION, A 119 SQUARE -FOOT FRONT
ENTRY PORCH, AND AN INTERIOR REMODEL TO AN EXISTING 2,248
SQUARE -FOOT, SINGLE -STORY SINGLE-FAMILY RESIDENCE ON A 0.98
GROSS ACRE (42,689 GROSS SQUARE -FOOT) LOT LOCATED AT 2867
SHADOW CANYON DRIVE, DIAMOND BAR, CA 91765 (APN 8713-018-035).
A. RECITALS
The property owner, Na Dong, and applicant, Alan Gao, have filed an application
for Development Review Planning Case No. PL2025-47 for a property located
at 2867 Shadow Canyon Drive, Diamond Bar, County of Los Angeles, California,
requesting Planning Commission approval to construct remodel the exterior and
construct a 1,647 square -foot first -floor addition, a 119 square -foot front entry
porch, and an interior remodel to an existing 2,248 square -foot single -story
single-family residence.
Hereinafter in this Resolution, the subject Development Review shall be referred
to as the "Proposed Project."
2. The subject property is made up of one parcel totaling 42,689 gross square feet
(0.98 gross acres). It is located in the Rural Residential (RR) zone with an
underlying General Plan land use designation of Rural Residential.
3. The legal description of the subject property is Lot 63 of Tract No. 30289, and
the Assessor's Parcel Number (APN) is 8713-018-035.
4. On May 15, 2026, public hearing notices were mailed to property owners within
a 1,000-foot radius of the Project site. The notice was submitted to the San
Gabriel Valley Tribune newspaper for publication on May 15, 2026. Also, public
notices were posted at the project site and the City's designated community
posting sites.
5. On May 26, 2026, the Planning Commission of the City of Diamond Bar
conducted a duly noticed public hearing, solicited testimony from all interested
individuals, and concluded said hearing on that date.
B. RESOLUTION
NOW, THEREFORE, it is found, determined and resolved by the Planning Commission
of the City of Diamond Bar as follows:
1. The Planning Commission hereby specifically finds that all of the facts set forth
in the Recitals, Part A, of this Resolution are true and correct; and
2. The Planning Commission hereby determines the Project to be Categorically
Exempt from the provisions of the California Environmental Quality Act (CEQA)
pursuant to the provisions of Article 19 Section 15301(e) (additions to existing
structures) of the CEQA Guidelines. Therefore, no further environmental review
is required.
C. FINDINGS OF FACT
Based on the findings and conclusions set forth herein and as prescribed under
Diamond Bar City Code (DBCC) Section 22.48, this Planning Commission hereby finds
as follows:
Development Review Findings (DBCC Section 22.48.040)
1. The design and layout of the proposed development is consistent with the
applicable elements of the City's General Plan, City Design Guidelines, and
development standards of the applicable district, design guidelines, and
architectural criteria for special areas (e.g., theme areas, specific plans,
community plans, boulevards or planned developments):
The design of the Project is consistent with the applicable elements of the City's
General Plan, City Design Guidelines and development standards. The City's
General Plan Policy LU-P-56 requires that development on privately -owned,
residentially designated land in hillside areas shall be compatible with the
surrounding natural areas promoting design principles such as minimizing
grading, preserving existing vistas, incorporate site and architectural design that
is sensitive to the hillsides, and require fuel modification. To minimize the extent
of grading impacts, the applicant is proposing approximately 508 cubic yards of
fill and 73 cubic yards of cut in proximity of the residence to establish a buildable
pad capable of supporting the proposed addition and rear yard improvements
while preserving majority of the site's unimproved natural slope. All exposed
portions of the proposed retaining walls will have a decorative finish, with the
use of split -faced with brick caps to match the house as to not detract from the
hillside.
A gradual transition between the project and adjacent uses is achieved through
appropriate setbacks, building height, and window and door placement.
Additionally, the design includes a new entry porch. All elevations are
architecturally treated and strongly articulated with the use of new colors and
materials along the visible facade [City's Design Guidelines B. Architecture (3)].
The Project complies with all development standards of the Rural Residential
zoning district by complying with all development standards such as required
setbacks, building height, and lot coverage. The project site is not part of any
theme area, specific plan, community plan, boulevard or planned development.
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2. The design and layout of the proposed development will not interfere with the
use and enjoyment of neighboring existing or future developments, and will not
create traffic or pedestrian hazards;
The proposed addition will not interfere with the use and enjoyment of
neighboring existing or future developments because the use of the project site
is designed for a single-family home and the surrounding uses are also single-
family homes. The Project will not be intrusive to neighboring homes since the
proposed addition will not block existing views from adjacent properties. The
properties located to the north and south of the project site are currently
undeveloped, therefore, the addition will have no view impacts from these
properties. All properties located to the east, directly across the street from the
project site, are situated on building pads at significantly higher elevations based
on topographic data obtained from the City's GIS system. Because it is a single -
story addition to an existing single -story residence, the project will not impact
views from these properties.
The adjacent lots at 2845 and 2887 Shadow Canyon Drive will remain vacant,
therefore, the closest neighboring property is the property located directly
across the street from the project site at 2868 Shadow Canyon Drive. As stated
previously, the proposed addition will be constructed on a lower building pad
elevation comparable to the adjacent neighboring property located at 2868
Shadow Canyon Drive. As a result, the proposed addition will not exceed the
height of neighboring homes, thereby maintaining the visual scale and grade
levels of the adjacent homes along Shadow Canyon Drive.
In addition, maintaining privacy for surrounding properties was considered in the
project's design. The existing home is situated between two vacant lots, and the
only properties potentially affected by the proposed addition are the homes at
2840 and 2828 Steeplechase Lane, located nearest to the project site. Although
these homes are at a lower elevation and their rear yards are within the line of
sight of the project site, they are approximately 150 feet away from the proposed
building footprint and are further screened by mature trees on their respective
properties. As such, the project would not result in privacy impacts beyond what
currently exist at this location.
The proposed addition will not interfere with vehicular or pedestrian movements,
such as access or other functional requirements of a single-family home
because it complies with the requirements for driveway widths and exceeds the
minimum number of required off-street parking spaces.
3. The architectural design of the proposed development is compatible with the
character of the surrounding neighborhood and will maintain and enhance the
harmonious, orderly and attractive development contemplated by
Chapter 22.48: Development Review Standards, the City's Design Guidelines,
the City's General Plan, or any applicable specific plan;
The City's General Plan Policy LU-P-56 requires that residential development
be compatible with the prevailing character of the surrounding neighborhood in
terms of building scale, density, massing, and design. The City's General Plan
Goal CC-G-4 also requires the preservation of the scale and character of
existing residential neighborhoods and ensure sensitive transitions between
densities and uses. The City's Design Guidelines Architecture (1) requires
compatibility with the surrounding character including harmonious building style,
form, size, color, material and roofline.
The scale and proportions of the proposed addition are well balanced and
appropriate for the 0.98 gross -acre site. The Modem Mediterranean
architectural style is compatible with other homes in the neighborhood since the
architecture in The Country is eclectic, and includes a variety of architectural
designs. The Project minimizes negative impacts on surrounding uses since
the house will not block existing views from adjacent properties. In sum, the
Project fits the character of the neighborhood on which it is proposed.
4. The design of the proposed development will provide a desirable environment
for its occupants and visiting public as well as its neighbors through good
aesthetic use of materials, texture, color, and will remain aesthetically
appealing;
The existing residence will undergo a complete exterior remodel as part of the
proposed project. The remodel incorporates a contemporary interpretation of
Mediterranean architectural elements including a low-pitched roof, simple
rectilinear window and door openings, and stucco wall surfaces with a sand
finish. Additional architectural elements include simple stucco door and window
surrounds, metal light fixtures, and vinyl garage doors with embossed
woodgrain-textured panels. Through the use of earth -toned shades and quality
materials that have texture and color, the proposed addition will not be intrusive
to neighboring homes. Also, landscaping is integrated into the site to
complement the massing of the house and blend in with neighboring homes and
the natural environment of the site in order to maintain a desirable environment.
The scale and proportions of the proposed addition are well balanced and
appropriate for the site.
5. The proposed development will not be detrimental to public health, safety or
welfare or materially injurious (e.g., negative effect on property values or
resale(s) of property) to the properties or improvements in the vicinity; and
Before the issuance of any City permits, the proposed project is required to
comply with all conditions within this Resolution, and with all other applicable
Building and Safety Division and Public Works Departments requirements.
Through the permit and inspection process, the referenced agencies will ensure
that the proposed project is not detrimental to the public health, safety or welfare
or materially injurious to the properties or improvements in the vicinity.
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6. The proposed project has been reviewed in compliance with the provisions of
the California Environmental Quality Act (CEQA).
The proposed project is categorically exempt from the provisions of the
California Environmental Quality Act (CEQA) as set forth under Article 19
Section 15301(e) (additions to existing structures) of the CEQA Guidelines.
Based upon the findings and conclusion set forth above, the Planning Commission hereby
approves this Application, subject to the following conditions:
1. Development shall substantially comply with the plans and documents
presented to the Planning Commission at the public hearing.
2. Prior to building permit issuance, a Certification of Design, together with
landscape and irrigation plans prepared by a licensed landscape architect, shall
be submitted to the Planning Division for review and approval by the City's
Consulting Landscape Architect. Landscape and irrigation plans shall comply
with the updated Water Efficient Landscaping Ordinance.
3. Standard Conditions. The applicant shall comply with the standard
development conditions attached hereto.
The Planning Commission shall:
a. Certify to the adoption of this Resolution; and
b. Forthwith transmit a certified copy of this Resolution, by certified mail to
the property owner, Na Dong, 17795 Neff Ranch Road, Yorba Linda, CA
92886, and applicant, Alan Gao, 17795 Neff Ranch Road, Yorba Linda,
CA 92886.
APPROVED AND ADOPTED THIS 26TH DAY OF MAY, 2026, BY THE PLANNING
COMMISSION OF THE CITY OF DIAMOND BAR.
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Brian Worthington, Chairperson
I, Greg Gubman, Planning Commission Secretary, do hereby certify that the foregoing
Resolution was duly introduced, passed, and adopted, at a regular meeting of the Planning
Commission held on the 26th day of May, 2026, by the following vote:
AYES: 3 COMMISSIONERS: MEHTA, RAWLINGS, WORTHINGTON
NOES: 0 COMMISSIONERS: NONE
E
ABSENT: 2 COMMISSIONERS: TORRES, MAO
ABSTAIN: p COMMISSIONERS: NONE
ATTEST:
Greg Gubman, Secretary
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` I - COMMUNITY DEVELOPMENT DEPARTMENT
STANDARD CONDITIONS
USE PERMITS, COMMERCIAL AND RESIDENTIAL NEW AND
REMODELED STRUCTURES
PROJECT #: Development Review Planning Case No. PL2025-47
SUBJECT: To remodel the exterior and construct a 1,647 square -foot first -
floor addition, a 119 square -foot front entry porch, and an
interior remodel to an existing 2,248 square -foot single -story
single-family residence on a 42,689 gross square -foot (0.98
gross acre) undeveloped lot.
PROPERTY
OWNER: Na Dong, 17795 Neff Ranch Road, Yorba Linda, CA 92886
APPLICANT: Alan Gao, 17795 Neff Ranch Road, Yorba Linda, CA 92886
LOCATION: 2867 Shadow Canyon Drive, Diamond Bar, CA 91765
ALL OF THE FOLLOWING CONDITIONS APPLY TO YOUR PROJECT.
APPLICANT SHALL CONTACT THE PLANNING DIVISION AT (909) 839-7030,
FOR COMPLIANCE WITH THE FOLLOWING CONDITIONS:
A. GENERAL REQUIREMENTS
1. The applicant shall defend, indemnify, and hold harmless the City,
and its officers, agents and employees, from any claim, action, or
proceeding to attack, set -aside, void or annul, the approval of
Development Review Planning Case No. PL2025-47 brought within
the time period provided by Government Code Section 66499.37. In
the event the city and/or its officers, agents and employees are made
a party of any such action:
(a) Applicant shall provide a defense to the City defendants or at
the City's option reimburse the City its costs of defense,
7 PC RESO 2026-08
including reasonable attorneys' fees, incurred in defense of
such claims.
(b) Applicant shall promptly pay any final judgment rendered
against the City defendants. The City shall promptly notify the
applicant of any claim, action of proceeding, and shall
cooperate fully in the defense thereof.
2. This approval shall not be effective for any purpose until the applicant
and owner of the property involved have filed, within twenty-one
(21) days of approval of this Development Review Planning Case
No. PL2025-47, at the City of Diamond Bar Community Development
Department, their affidavit stating that they are aware of and agree
to accept all the conditions of this approval. Further, this approval
shall not be effective until the applicants pay remaining City
processing fees, school fees and fees for the review of submitted
reports.
3. All designers, architects, engineers, and contractors associated with
this project shall obtain a Diamond Bar Business License, and a
zoning approval for those businesses located in Diamond Bar.
4. Signed copies of Planning Commission Resolution No. 2026-XX,
Standard Conditions, and all conditions of approval shall be included
on the plans (full size). The sheet(s) are for information only to all
parties involved in the construction/grading activities and are not
required to be wet sealed/stamped by a licensed Engineer/Architect.
5. Prior to the plan check, revised site plans and building elevations
incorporating all Conditions of Approval shall be submitted for
Planning Division review and approval.
6. Prior to any use of the project site or business activity being
commenced thereon, all conditions of approval shall be completed.
7. The project site shall be maintained and operated in full compliance
with the conditions of approval and all laws, or other applicable
regulations.
8. Approval of this request shall not waive compliance with all sections
of the Development Code, all other applicable City Ordinances, and
any applicable Specific Plan in effect at the time of building permit
issuance.
9. All site, grading, landscape/irrigation, and roof plans, and elevation
plans shall be coordinated for consistency prior to issuance of City
8 PC RESO 2026-06
permits (such as grading, tree removal, encroachment, building,
etc.,) or approved use has commenced, whichever comes first.
10. The hours during which construction activities causing the operation
of any tools or equipment used in construction, drilling, repair,
alteration, or demolition work are limited to Monday through
Saturday, between the hours of 7:00 a.m. and 7:00 p.m., and are not
allowed at any time on Sundays or holidays.
11. The property owner/applicant shall remove the public hearing notice
board within three days of this project's approval.
12. The applicant shall comply with the requirements of City Planning,
Building and Safety Divisions, and Public Works Department
13. Prior to issuance of building permits, the applicant shall record, and
provide the City with a conformed recorded copy of, a Covenant and
Agreement or similar document in a form approved by the City
Attorney, which restricts the rental of rooms or other portions of the
property under two or more separate agreements and prohibits use
of the property as a boarding or rooming house, except to the extent
kv otherwise permitted by the Diamond Bar City Code or applicable
state or federal law.
Shh. 14. Landscape plans prepared by a licensed landscape architect that
complies with the City's water conservation landscaping
requirement, along with a landscape deposit in the amount of $2,500
for landscape plan check review fees shall be required during
building plan check [DBCC Section 8.14]. The landscape plans will
be reviewed by the City's Consultant Landscape Architect to ensure
this requirement is met.
B. FEES/DEPOSITS
Applicant shall pay development fees (including but not limited to
Planning, Building and Safety Divisions, and Public Works
Department) at the established rates, prior to issuance of building or
grading permit (whichever comes first), as required by the City.
School fees as required shall be paid prior to the issuance of building
permit. In addition, the applicant shall pay all remaining prorated City
project review and processing fees prior to issuance of grading or
building permit, whichever comes first.
2. Prior to any plan check, all deposit accounts for the processing of
this project shall have no deficits.
9 PC RESO 2026-08
C. TIME LIMITS
1. The approval of Development Review Planning Case No. PL2025-
47 expires within two years from the date of approval if the use has
not been exercised as defined per Diamond Bar City
Code (DBCC) Section 22.66.050 (b)(1). In accordance with DBCC
Section 22.60.050(c), the applicant may request, in writing, a one-
year time extension for Planning Commission consideration. Such a
request must be submitted to the Planning Division prior to the
expiration date and be accompanied by the review fee in accordance
with the fee schedule in effect at the time of submittal.
D. SITE DEVELOPMENT
1. This approval is to remodel the exterior and construct a 1,647
square -foot first -floor addition, a 119 square -foot front entry porch,
and an interior remodel to an existing 2,248 square -foot single -story
single-family residence located at 2867 Shadow Canyon Drive, as
described in the staff report and depicted on the approved plans on
file with the Planning Division, subject to the conditions listed below.
2. The construction documents submitted for plan check shall be in
substantial compliance with the architectural plans approved by the
Planning Commission, as modified pursuant to the conditions below.
If the plan check submittal is not in substantial compliance with the
approved Development Review submittal, the plans may require
further staff review and re -notification of the surrounding property
owners, which may delay the project and entail additional fees.
3. To ensure compliance with the provisions of the Planning
Commission approval, a final inspection is required from the
Planning Division when work for any phase of the project has been
completed. The applicant shall inform the Planning Division and
schedule an appointment for such an inspection.
4. The above conditions shall run with the land and shall be binding
upon all future owners, operators, or successors thereto of the
property. Non-compliance with any condition of approval or
mitigation measure imposed as a condition of the approval shall
constitute a violation of the City's Development Code. Violations may
be enforced in accordance with the provisions of the Development
Code.
5. Failure to comply with any of the conditions set forth above or as
subsequently amended in writing by the City, may result in failure to
obtain a building final and/or a certificate of occupancy until full
10 PC RESO 2026-06
compliance is reached. The City's requirement for full compliance
may require minor corrections and/or complete demolition of a non-
compliant improvement, regardless of costs incurred where the
project does not comply with design requirements and approvals that
the applicant agreed to when permits were pulled to construct the
project.
6. The project site shall be developed and maintained in substantial
conformance with the approved plans submitted to, approved, and
amended herein by the Planning Commission, on file with the
Planning Division, the conditions contained herein, and the
Development Code regulations.
7. All roof- or ground -mounted mechanical equipment (e.g., air
conditioning, heating, ventilation ducts and exhaust, water heaters,
etc.), waste and storage areas, and utility services shall be screened
from public view from abutting public streets and rights -of -way, and
abutting area(s) zoned for residential or open space uses, including
views from above the subject project. The method of screening shall
be architecturally compatible with other site development in terms of
colors, materials, and architectural style subject to approval by the
director. The screening design/construction shall blend with the
design of the structure(s) and include appropriately installed and
maintained landscaping when on the ground.
8. All structures, including walls, trash enclosures, canopies, etc., shall
be maintained in a structurally sound, safe manner with a clean,
orderly appearance. All graffiti shall be removed within 72 hours by
the property owners/occupant.
9. All landscaping, structures, architectural features and public
improvements damaged during construction shall be repaired or
replaced upon project completion.
E. SOLID WASTE
1. The site shall be maintained in a condition, which is free of debris
both during and after the construction, addition, or implementation of
the entitlement approved herein. The removal of all trash, debris,
and refuse, whether during or subsequent to construction shall be
done only by the property owner, applicant or by a duly permitted
waste contractor, who has been authorized by the City to provide
collection, transportation, and disposal of solid waste from
residential, commercial, construction, and industrial areas within the
City. It shall be the applicant's obligation to ensure that the waste
contractor used has obtained permits from the City of Diamond Bar
11 PC RESO 2026-08
to provide such services.
2. Mandatory solid waste disposal services shall be provided by the City
franchised waste hauler to all parcels/lots or uses affected by
approval of this project.
APPLICANT SHALL CONTACT THE PUBLIC WORKS DEPARTMENT,
(909) 839-7040, FOR COMPLIANCE WITH THE FOLLOWING CONDITIONS:
A. GENERAL
Prior to issuance of a grading permit, the applicant shall submit an Erosion
Control Plan concurrently with the grading plan to the Public Works
Department for review and approval. The Erosion Control Plan shall clearly
detail erosion control measures that will be implemented during
construction. The Erosion Control Plan shall conform to National Pollutant
Discharge Elimination System (NPDES) standards and incorporate the
appropriate Best Management Practices (BMP's) as specified in the Storm
Water BMP Certification.
2. Per NPDES Permit (CAS004004) for MS4 Discharges within the Coastal
Watershed of Los Angeles County (Order No. R4-2021-0105), additions to
a hillside home development project shall include mitigation measures to:
(i) Conserve natural areas;
(ii) Protect slopes and channels;
(iii) Provide storm drain system stenciling and signage;
(iv) Divert roof runoff to vegetated areas before discharge unless the
diversion would result in slope instability; and
(v) Direct surface flow to vegetated areas before discharge, unless
the diversion would result in slope instability.
These mitigation measures shall be included with the submitted grading
plans and implemented during construction.
3. Grading and construction activities and the transportation of equipment and
materials and operation of heavy grading equipment shall be limited to
between the hours of 7:00 a.m. and 5:00 p.m., Monday through Saturday.
Dust generated by grading and construction activities shall be reduced by
watering the soil prior to and during the activities and in accordance with
South Coast Air Quality Management District Rule 402 and Rule 403.
Reclaimed water shall be used whenever possible. Additionally, all
construction equipment shall be properly muffled to reduce noise levels.
12 PC RESO 2026-08
B. SOILS REPORT/GRADING/RETAINING WALLS
1. Prior to issuance of a grading permit, the applicant shall submit a
geotechnical report concurrently with the grading plan to the Public Works
Department for review and approval. The geotechnical report shall be
prepared by a Geotechnical Engineer, licensed by the State of California.
2. Prior to issuance of a grading permit, the applicant shall submit drainage
and grading plans to the Public Works Department for review and approval.
Drainage and grading plans shall be prepared by a Civil Engineer, licensed
by the State of California and in accordance with the City's requirements.
A list of requirements for grading plan check is available from the Public
Works Department. All grading (cut and fill) calculations shall be submitted
to the City concurrently with the grading plan.
3. Finished slopes shall conform to Diamond Bar City Code Section
22.22.080-Grading.
4. All easements and flood hazard areas shall be clearly identified on the
grading plan.
5. The grading plan shall show the location of any retaining walls and the
elevations of the top of wall/footing/retaining and the finished grade on both
sides of the retaining wall. Construction details for retaining walls shall be
shown on the grading plan. Calculations and details of retaining walls shall
be submitted to the Building and Safety Division for review and approval.
6. All equipment staging areas shall be located on the project site. Staging
area, including material stockpile and equipment storage area, shall be
enclosed within a 6-foot-high chain link fence. All access points in the
defense shall be locked whenever the construction site is not supervised.
7. Grading of the subject property shall be in accordance with the California
Building Code, City Grading Ordinance, Hillside Management Ordinance
and acceptable grading practices.
8. All slopes shall be seeded per landscape plan and/or fuel modification plan
with native grasses or planted with ground cover, shrubs, and trees for
erosion control upon completion of grading or some other alternative
method of erosion control shall be completed to the satisfaction of the City
Engineer and a permanent irrigation system shall be installed.
9. Prior to issuance of a grading permit, the applicant shall submit a stockpile
plan to the Public Works Department for review and approval. Stockpile plan
shall show the proposed location for stockpile for grading export materials,
13 PC RESO 2026-08
and the route of transport.
10. Prior to commencement of grading operations, a pre -construction meeting
shall be held at the project site with the grading contractor, applicant, and
city grading inspector at least 48 hours prior to work commencing.
11. Prior to issuance of building permits for the foundation of the residential
structure, the applicant shall submit rough grade certifications by project
soils and civil engineers and the as -graded geotechnical report to the Public
Works Department for review and approval. Retaining wall permits may be
issued without a rough grade certificate.
12. Prior to issuance of any project final inspections/certificate of occupancy,
the applicant shall submit final grade certifications by project soils and civil
engineers to the Public Works Department.
C. DRAINAGE
Prior to issuance of a grading permit, the applicant shall submit a detailed
drainage system information of the lot with careful attention to any flood
hazard area to the Public Works Department. All drainage/runoff from the
development shall be conveyed from the site to the natural drainage course.
No on -site drainage shall be conveyed to adjacent parcels, unless that is
the natural drainage course.
III. APPLICANT SHALL CONTACT THE BUILDING AND SAFETY DIVISION,
(909) 839-7020, FOR COMPLIANCE WITH THE FOLLOWING CONDITIONS:
General Conditions:
Plans and construction shall conform to current State and Local Building
Code (i.e. 2022 California Building Code series will apply) requirements and
all other applicable construction codes, ordinances and regulations in effect
at the time of permit issuance.
2. Implementation of the CAL Green Code shall be reflected on the plans, and
certification shall be by a third party as required by the Building Division.
Specific water, waste, low VOC, and related conservation measures shall
be shown on plans. Construction shall conform to the current CAL Green
Code.
Plan Check — Items to be addressed prior to plan approval:
3. The minimum design load for wind in this area is 110 M.P.H. exposures "C"
and the site is within seismic zone D or E. The applicant shall submit
drawings and calculations prepared by a California State licensed
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Architect/Engineer with wet stamp and signature.
4. Indoor air quality shall be provided consistent with ASHRAE 62.2 as
required per California Energy Code 150(o).
5. Public Works/Engineering Department is required to review and approve
grading plans that clearly show all finish elevations, drainage, and retaining
wall(s) locations. These plans shall be consistent with the site plan
submitted to the Building & Safety Division.
6. The following statement shall be included on the plans: "Separate permits
are required for retaining walls."
7. This project shall comply with the energy conservation requirements of the
State of California Energy Commission. All lighting shall be high efficacy or
equivalent per the current California Energy Code 140.6 to 140.9.
8. New gas appliances shall be designed to be electric ready per CA Energy
Code 150.0(t) to (v).
9. All easements shall be shown on the site plan.
10. Fire Department approval shall be required. Contact the Fire Department to
check the fire flow to the property. LA County Fire shall approve plans for
fire flow availability due to the home being over 3,600 square feet as
required per CFC Appendix B1O5.1.
11. All retaining walls shall be separately submitted to the Building & Safety and
Public Works/Engineering Departments for review and approval.
12. A soils report is required per CBC 1803 and all recommendations of the
soils report shall be adhered to.
13. Slope setbacks shall be consistent with California Building Code Figure
1805.3.1 and California Residential Code R403.1.7. Foundations shall
provide a minimum distance to daylight.
14. Light and ventilation shall comply with CBC 1203 and 1205.
Permit — Items required prior to building permit issuance:
15. Solid waste management of construction material shall incorporate
recycling material collection per Diamond Bar City Code 8.16 of Title 8. The
contractor shall complete all required forms and pay applicable deposits
prior to permit.
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16. Prior to building permit issuance, all school district fees shall be paid.
Please obtain a form from the Building and Safety Division to take directly
to the school district.
17. Submit grading plans clearly showing all finish elevations, drainage, and
retaining wall locations. No building permits shall be issued prior to
submitting a pad certification.
18. Private property sewer/septic system shall be approved by the Los Angeles
County Health Department and the California Water Control Board.
19. Sewer connections require sewer connection fees and approval from the
LA County Sanitation District.
20. AQMD notification is required at least 10 days prior to any demolition. Proof
of notification is required at permit issuance.
21. All workers on the job shall be covered by workers' compensation insurance
under a licensed general contractor. Any changes to the contractor shall
be updated on the building permit.
22. The rear retaining wall must be separated from the house plans and
separately permitted in order to certify the building pad before permit
issuance of the house structure.
Construction — Conditions required during construction:
23. Every permit issued by the building official under the provisions of this
Code shall expire and become null and void unless the work authorized by
such permit is commenced within one year after permit issuance, and if a
successful inspection has not been obtained from the building official within
one -hundred -eighty (180) days from the date of permit issuance or the last
successful inspection. A successful inspection shall mean a documented
passed inspection by the city building inspector as outlined in Section 110.6.
24. All structures and property shall be maintained in a safe and clean manner
during construction. The property shall be free of debris, trash, and weeds.
25. Existing fencing shall remain in -place during construction including pool
barrier fencing. Any alteration of the fencing may result in a discontinuation
of construction until the fences are returned to its original state.
26. All equipment staging areas shall be maintained in an orderly manner and
screened behind a minimum 6' high fence.
27. The project shall be protected by a construction fence to the satisfaction of
16 PC RESO 2026-08
1
the Building Official, and shall comply with the NPDES & BMP requirements
(sand bags, etc.). All fencing shall be view obstructing with opaque
surfaces.
28. The applicant shall contact Dig Alert and have underground utility locations
marked by the utility companies prior to any excavation. Contact Dig Alert
by dialing 811 or their website at www.digalert.org.
29. The applicant shall first request and secure approval from the City for any
changes or deviations from approved plans prior to proceeding with any
work in accordance with such changes or deviations.
30. All glazing in hazardous locations shall be labeled as safety glass. The
labeling shall be visible for inspection.
31. Pursuant to California Residential Code (CRC) Section R315, carbon
monoxide detectors are required in halls leading to sleeping rooms.
32. Drainage patterns shall match the approved grading/drainage plan from the
Public Works/Engineering Department. Surface water shall drain away
from the building at a 2% minimum slope. The final as -built conditions shall
match the grading/drainage plan or otherwise approved as -built
grading/drainage plan.
33. Decks, roofs, and other flat surfaces shall slope at least 1/4"/ft with
approved and listed water proofing material. Guardrails shall be provided
for these surfaces at least 42" minimum in height, 4" maximum spacing
between rails, and capable of resisting at least 20 pounds per lineal foot of
lateral load.
34. Special inspections and structural observation will be required in
conformance with CBC 1704 to 1709.
35. All plumbing fixtures, including those in existing areas, shall be low -flow
models consistent with California Civil Code Section 1101.1 to 1101.8.
END
17 PC RESO 2026-08