Part II — BASE DISTRICT REGULATIONS

Article 12 — Business Park District (B-P)

Walnut Creek Zoning Code · 2026-06 edition · ingested 2026-07-07 · Walnut Creek

10-2.2.1201 Purpose and Intent.

The primary purpose of the Business Park Zone is to facilitate a vibrant and flexible administrative, medical, research and office center within the Shadelands Business Park. The intent is to create, maintain, and support an environment for higher quality, progressive, innovative and employment-generating businesses including administrative, professional office, limited industry, medical, research, and similar uses. It is also the intent to provide a mixture of lot sizes to accommodate small businesses as well as larger campus-style uses, and to provide amenities, personal service, and convenient restaurant uses for people who work in the business park. (§14, Ord. 2070, eff. 6/20/2008; §1, Ord. 2138, eff. 1/15/2015; §2, Ord. 2146, eff. 4/1/2016)

10-2.2.1202 Land Use Regulations.

In the following table, the letters in the "Use Regulations" column are defined as follows:

P = A permitted use.

L = A use permitted subject to certain limitations prescribed by the "Use
Regulations" that immediately follow the table.
U = A use permitted on approval of a Conditional Use Permit.

Letters in parentheses in the "Additional Regulations" column are described in the "Additional Regulations" section following the "Use Regulations." Where a use regulation or a letter in parentheses is opposite a use classification heading, the referenced regulations shall apply to all use classifications under the heading. Land uses not listed (indicated by strikeout) are not permitted.

LAND USE USE REGULATIONS ADDITIONAL
REGULATIONS
A. Residential Use Classifcations
1. Adult Day Care Home
2. Congregate Living Facility
3. Family Day Care Home
a. Small Family Day Care Home
b. Large Family Day Care Home
4. Group Residential
5. Multiple Family Residential
6. Residential Care Home
7. Accessory Dwelling Unit
8. Single Family Residential
LAND USE USE REGULATIONS ADDITIONAL
REGULATIONS
--- --- ---
B. Commercial Use Classifcations (A)
Alcohol Production—See Custom Manufacturing
1. Ambulance Services
2. Animal Sales and Service
a. Animal Hospital L(1)
b. Animal: Retail Sales and Grooming
c. Horse Stables
d. Kennel
3. Artist Studio L(2)
4. Banks and Savings and Loans
a. Banks and Savings and Loans L(3)
(1) With Drive-up Service
(2) With Automated Teller Machine L(3)
5. Catering Services L(4)
6. Commercial Cannabis Business
LAND USE USE REGULATIONS ADDITIONAL
REGULATIONS
--- --- ---
a. Commercial Cannabis Cultivation
b. Commercial Cannabis Distribution
c. Commercial Cannabis Manufacturing
d. Commercial Cannabis Retail Dispensary
(1) With Cannabis Delivery
e. Nonstorefront Delivery-Only Operation L(25)
f. Commercial Cannabis Testing Laboratory
7. Communication Facilities P
8. Custom Manufacturing L(2)
9. Eating and/or Drinking Establishments (E)
a. Eating and/or Drinking Establishments L(3)
(1) With Wine and Beer Service Ending at or Before
11:00 p.m.		 L(5)
(2) With Full Alcoholic Beverage Service Ending at
or Before 11:00 p.m.		 L(5)
(3) With Live Entertainment
LAND USE USE REGULATIONS ADDITIONAL
REGULATIONS
--- --- ---
(4) With Dancing
(5) With Take-out Service L(3)
(a) Drive-up
(6) With Permanent Outdoor Seating L(3)
(7) With Of-site Distribution
(a) Micro-brewery L(3)
10. Food and Beverage Sales
a. Food and Beverage Sales
b. Convenience Market
(1) With Gasoline Sales
c. Specialty Food Shops L(6)
(1) With Of-site Distribution
11. Funeral and Interment Services
12. Health Clubs L(3)
13. Home Improvement Sales and Service
LAND USE USE REGULATIONS ADDITIONAL
REGULATIONS
--- --- ---
14. Horticultural Establishment L(7)
15. Lumber and Building Material Yard
16. Maintenance and Repair Service
17. Mini Storage L(8)
18. Nursery
19. Ofces, Business and Professional
a. Ofces, Business and Professional P
(1) Ofces, Medical L(9)
20. Parking, Commercial Facility L(10) (B)
21. Pawn Shop
22. Personal Improvement Services L(11)
23. Personal Services L(3)
24. Recreation and Entertainment, Commercial
a. Within a Building L(12)
b. Outside a Building
LAND USE USE REGULATIONS ADDITIONAL
REGULATIONS
--- --- ---
25. Research and Development Services P
26. Retail Sales/Rental L(13)
27. Vehicle/Equipment Sales and Service
a. Automobile Rental/Leasing
b. Automobile Sales/New and Used
c. Automobile Washing
d. Automobile Wrecking
e. Service Stations
(1) Automobile Washing
f. Vehicle/Equipment Repair
(1) Limited Vehicle Service
g. Vehicle/Equipment Sales and Rentals
h. Vehicle Storage
28. Visitor Accommodations
a. Bed and Breakfast Inns
LAND USE USE REGULATIONS ADDITIONAL
REGULATIONS
--- --- ---
b. Hotels L(14)
c. Motels
C. Industrial Use Classifcations
1. General Industry
2. Limited Industry L(15)
3. Research Development Industry L(16)
4. Wholesaling, Distribution and Storage
D. Agricultural Use Classifcations
1. Animal Husbandry
2. Crop Production
E. Community Facility Use Classifcations
1. Adult Day Care Facility U
2. Child Day Care Facility (Day Care Center) U (C)
3. Clubs and Lodges
4. College, Public or Private U
LAND USE USE REGULATIONS ADDITIONAL
REGULATIONS
--- --- ---
5. Cultural Institutions
a. Cultural Institutions U
b. Natural History/Science Museum U
6. Emergency Medical Care/No Inpatient
7. Government Ofces P
8. Hazardous Waste Management Facility
9. Heliports
10. Hospitals
a. Acute Care
b. Other
11. Housing for the Homeless/Emergency Shelters
12. Maintenance and Service Facilities
13. Park and Recreation Facilities U
14. Public Parking Facilities P
15. Public Safety Facilities P
LAND USE USE REGULATIONS ADDITIONAL
REGULATIONS
--- --- ---
16. Public Transit Terminals L(17)
17. Recycling Facilities
a. Collection Facility
(1) Reverse Vending Machine L(18) (D)
(2) Small Collection Facility L(18) (D)
(3) Large Collection Facility
b. Processing Facility
18. Religious Assembly
19. Residential Care Facility
20. Schools, Public or Private U
21. Skilled Nursing Facilities L(19)
22. Utilities, Major L(20)
23. Utilities, Minor P
F. Accessory Uses
1. Accessory Living Quarters
LAND USE USE REGULATIONS ADDITIONAL
REGULATIONS
--- --- ---
2. Accessory Structure L(21)
3. Accessory Uses L(22)
a. Garage Sales
b. Home Occupations
c. Personal Cannabis Cultivation
G. Temporary Uses (A)
1. Arts and Crafts Shows, Outdoor L(23)
2. Christmas Tree Sales L(23)
3. Civic/Community Events L(23)
4. Farmers Markets L(23)
5. Live Entertainment Events L(23)
6. Outdoor Seating/Eating and Drinking Estab. L(23)
7. Pumpkin Sales L(23)
8. Retail Sales, Outdoor L(23)
9. Swap Meets, Nonrecurring L(23)
LAND USE LAND USE USE REGULATIONS
--- --- ---
10. Swap Meets, Recurring L(23)
11. Street Fairs L(23)
12. Vendor Carts L(24)
USE REGULATIONS
LAND USE USE REGULATIONS ADDITIONAL
REGULATIONS
L(1) Animal hospitals/veterinarian services are permitted; provided, that there is no boarding of
animals except for convalescence or medical examinations.
L(2) Alcohol production uses in the B-P Zoning District shall mean a commercial establishment
within an enclosed building that produces handcrafted, bottled alcoholic beverages in
limited quantities for local and of-site consumption with or without a related eating and/or
drinking establishment, including microbreweries, craft wineries, distilleries, cider works,
meaderies, and other micro-alcohol uses for the small-scale production and distribution of
no more than 15,000 barrels of beer or cider per year or 10,000 cases of wine, distilled
spirits, or mead per year. Alcohol production and custom manufacturing uses are permitted;
provided, that all activity is conducted entirely within an enclosed building and the use is
consistent with all performance standards pursuant to Section 10‑2.2.1203, Property
Development Regulations, D(9). Alcohol production uses with on-site eating or drinking uses
are also subject to L(5). Uses that include outdoor activity are permitted subject to the
issuance of a conditional use permit. Retail sales of custom manufacturing products
produced on site is permitted as an accessory use.
L(3) If the use is to be located in and completely occupy a freestanding building, the use is
permitted upon approval of conditional use permit. In approving the conditional use permit
the Planning Commission must fnd that:
a) The use in terms of location, size, appearance and signage, will not alter the campus
atmosphere of the individual buildings nor change the overall nature of the business park;
and
b) The use is in compliance with all performance standards in Section
10-2.2.1203,Property
Development Regulations, D(9); and
USE REGULATIONS
--- ---
c) The use will provide a beneft and service to existing employers and employees of the
business park; and
d) The hours of operation do not negatively afect adjacent residential neighborhoods.
All other uses are permitted subject to compliance with all performance standards in Section
10‑2.2.1203, Property Development Regulations, D(9).
L(4) Catering services in the Business Park zoning district include small-scale production of
handcrafted foods and nonalcoholic beverages, including chocolates, cofee roasting, tea
and spices mixing, bakeries, jams/jellies, pasta production, canning and bottling kitchens,
and commercial kitchens for an individual business or groups of individual businesses that
share facilities. In the B-P-100 zoning district catering services including accessory on-site
pick-up or consumption of the business's products or other products and are permitted
subject to compliance with all performance standards in Section
10-2.2.1203,Property
Development Regulations, D(9). In the B-P-200 zone, catering services that have accessory
on-site pick-up or consumption of the business's products or other products that are
located within 300 feet of residential property are permitted upon approval of a conditional
use permit by the Planning Commission; otherwise, the use is permitted subject to
compliance with all performance standards in Section
10-2.2.1203,Property Development
Regulations, D(9). For retail bakeries and delicatessens, see Food and Beverage Sales.
USE REGULATIONS
--- ---
L(5) If the use is to be located in and completely occupy a freestanding building, the use is
permitted subject to L(3) and an additional fnding by the Planning Commission that the use
is consistent with the administrative use permit compliance checklist conditions of approval
pursuant to Article 12 of Part III of this chapter. All other uses are permitted upon approval of
an administrative use permit pursuant to Article 12 of Part III of this chapter.
L(6) Delicatessens and bakeries are permitted subject to L(3). All other uses within this
classifcation are not permitted. For uses such as cofee shops and cafés, see Eating and/or
Drinking Establishments.
L(7) Horticultural uses in the B-P Zoning District shall include businesses engaged in growing
food crops. Horticultural uses are permitted uses subject to compliance with all
performance standards in Section
10-2.2.1203,Property Development Regulations, D(9).

USE REGULATIONS

USE REGULATIONS USE REGULATIONS
L(8) The mini-storage use is permitted upon approval of a conditional use permit. In approving
the use permit, the Planning Commission shall fnd that:
a) The use, in terms of location, size, appearance and signage, will not alter the campus
atmosphere of the individual building nor change the overall nature of the business park;
and
b) The use will provide a beneft and service to existing employers and employees of the
business park; and
c) The buildings occupied by this use shall not be located within 300 feet of any public street
or residential property, including those exterior to the business park, nor 500 feet from an
arterial roadway; and
d) The site, because of its location and limited visibility, is marginally suited for independent
administrative or research uses; and
e) The proposed use does not create noise, light, or other negative impacts for nearby
residential uses; and
f) The hours of operation are limited to 7:00 a.m. to 7:00 p.m.
L(9) Permitted subject to compliance with the of-street parking and loading regulations
contained within Part III, Article 2 of this chapter.
L(10) A temporary commercial parking lot is permitted subject to the approval of a minor use
permit. A permanent commercial parking lot is permitted subject to the issuance of a
conditional use permit.
L(11) Training centers which are accessory to business and professional ofces or research and
development services are permitted. Business and trade schools are permitted upon
approval of a conditional use permit. All other uses within this classifcation are permitted
subject to L(3).
L(12) Participant sports and recreation (including but not limited to basketball, indoor soccer,
arena football, volleyball, lacrosse and pickleball, as well as related training and incidental
spectators) are permitted within a building subject to approval of a conditional use permit.
Sports training includes all types of equipment and technology relating to training.
Eating and/or drinking establishments, retail sales/rentals, game centers, health clubs, and
personal improvement services are permitted as accessory uses to indoor commercial
recreation within a building subject to approval of a conditional use permit. The Planning

USE REGULATIONS

USE REGULATIONS USE REGULATIONS
Commission shall not approve a conditional use permit under this use regulation L(12)
unless it fnds that the uses will be compatible with the function and aesthetics of the
business park. Accessory uses shall be permitted only if the Planning Commission fnds that
participant sports and recreation will be the primary use of the facility. Hours of operation
shall not be earlier than 6:00 a.m. or later than 12:00 a.m. for primary and accessory uses.
Notwithstanding the foregoing, alcoholic beverage services shall be subject to the permit
requirements and regulations set forth in Article 12 of Part III of this chapter. Hours of
operation for alcoholic beverage services shall be set pursuant to Article 12 of Part III of this
chapter.
All other primary uses within this classifcation are prohibited.
L(13) Prescription pharmacies that are an integral part of, and accessory to, a complex of medical
ofces are permitted. Retail sales of products produced by the subject business are
permitted as an accessory use to the primary use (see also the primary use regulations). If
the accessory retail use is to be located in and completely occupy a freestanding building,
the use is permitted upon approval of a conditional use permit. In approving the use permit
the Planning Commission must fnd that:
a) The retail use is accessory to the primary use; and
b) The use, in terms of location, size, appearance and signage, will not alter the campus
atmosphere of the individual buildings nor change the overall nature of the business park;
and
c) The use is in compliance with all performance standards in Section
10-2.2.1203,Property
Development Regulations, D(9); and
d) The use will provide a beneft and service to existing employers and employees of the
business park; and
e) The hours of operation do not negatively afect adjacent residential neighborhoods.
L(14) Permitted subject to the issuance of a conditional use permit. In approving the use permit
the Planning Commission shall fnd that:
a) The hours of operation do not negatively afect nor will the use have a substantial adverse
efect on any adjacent residential neighborhoods; and
b) The use is in compliance with the performance standards of the B-P Zone pursuant to
Section
10-2.2.1203,Property Development Regulations, D(9).
L(15) Limited industry uses as well as associated warehousing and distribution is permitted as an
accessory use to business and professional ofces or commercial research and

USE REGULATIONS

USE REGULATIONS USE REGULATIONS
development services subject to compliance with the performance standards of the B-P
Zoning District in Section
10-2.2.1203,Property Development Regulations, D(9). If
manufacturing (as described in the Limited Industry use classifcation) is the primary
function of the business, the use is permitted upon approval of a conditional use permit. In
approving the use permit the Planning Commission shall fnd that:
a) The hours of operation do not negatively afect nor will the use have a substantial adverse
efect on any adjacent residential neighborhoods; and
b) The use is in compliance with the performance standards of the B-P Zone pursuant to
Section
10-2.2.1203,Property Development Regulations, D(9).
L(16) Research development industry uses are permitted in the B-P-100 zoning district subject to
compliance with the performance standards of the B-P Zoning District in Section
10-
2.2.1203,Property Development Regulations, D(9). Research development industry uses in
the B-P-200 zoning district are permitted subject to the issuance of conditional use permit.
In approving the use permit, the Planning Commission shall fnd that:
a) The hours of operation do not negatively afect nor will the use have a substantial adverse
efect on any adjacent residential neighborhoods; and
b) The use is in compliance with the performance standards of the B-P Zone pursuant to
Section
10-2.2.1203,Property Development Regulations, D(9).
L(17) Park-and-ride lots, pedestrian pathways, bicycle pathways, and sheltered bus stops are
permitted uses. All other uses within this classifcation are not permitted.
L(18) Permitted subject to the approval of the Community and Economic Development Director.
L(19) Skilled nursing facilities that have a typical stay of 30 days or less but no more than 100
days of stay are permitted upon approval of a conditional use permit. In approving the
conditional use permit the Planning Commission shall fnd that:
a) The hours of operation do not negatively afect nor will the use have a substantial adverse
efect on any adjacent residential neighborhoods; and
b) The use is in compliance with the performance standards of the B-P Zone pursuant to
Section
10-2.2.1203,Property Development Regulations, D(9).
All other uses within this classifcation are not permitted.

USE REGULATIONS

USE REGULATIONS USE REGULATIONS
L(20) Electrical substations, aboveground electrical transmission lines and switching buildings are
permitted uses. All other uses within this classifcation are not permitted.
L(21) Accessory structures are permitted subject to Section
10-2.3.103,Accessory Structures,
and design review, pursuant to Sections
10-2.4.1201 to 10-2.4.1210. Within the B-P-100
zone, accessory structures may be constructed to a height of 11 feet within side and rear
required setbacks if screened from view from the public right-of-way by sufcient landscape
screening. Flag poles, banners, and shade structures may be permitted in side and rear
setbacks to a height of 18 feet.
L(22) See the use regulation for the primary use classifcation.
L(23) A property owner shall apply for a master temporary activity permit (MTAP) to allow
temporary and short-term uses (including, but not limited to: arts and crafts shows, outdoor;
Christmas tree sales; civic/community events; farmers markets; live entertainment events;
pumpkin sales; retail sales, outdoor; vintage automobile shows; vintage vehicles; antique
shows; street fairs; and similar special events as approved by the Planning Manager, or
his/her designee) proposed within the boundaries of the zoning district during the calendar
year. The MTAP shall be subject to the review and written approval of the Planning Manager,
or his/her designee. The property owner may seek issuance of (or amendment to) the MTAP
at any time during the calendar year, but regardless of the date of issuance (or amendment),
the MTAP shall expire on December 31st each year. The master TAP application shall
include the following information: (1) list of all temporary uses proposed starting January 1st
and ending December 31st; (2) proposed dates, times, and duration of each temporary use
(not to exceed four consecutive days); (3) frequency of each temporary use (i.e., one-time,
daily, weekly, biweekly, monthly, quarterly, semi-annually, annually, up to a total of 50 days
per year); (4) other information, as required.
L(24) Vendor-carts that are accessory to the primary use and also that are not accessory to the
primary use, such as food trucks, are permitted subject to approval of a master temporary
activity permit per L(23).
L(25) Permitted subject to the issuance of a Conditional Use Permit and Operator's Permit
pursuant to Article 14 of Part III of the Zoning Ordinance.
ADDITIONAL USE REGULATIONS
--- ---
(A) See Section
10-2.3.121,Regulations for Outdoor Sales, Service and Display.
(B) See Part III, Article 2 of this chapter, Of-Street Parking and Loading.
(C) See Part III, Article 6 of this chapter, Child Day Care Facilities.
(D) See Part III, Article 7 of this chapter, Recycling Facilities.
(E) See Part III, Article 12 of this chapter, Alcoholic Beverage Sales.

(§14, Ord. 2070, eff. 6/20/2008; §§29, 30, 31, Ord. 2109, eff. 6/15/12; §16, Ord. 2129, eff. 7/3/14; §1, Ord. 2138, eff. 1/15/2015; §2, Ord. 2146, eff. 4/1/2016; §§7(4), (5), (48), Ord. 2183, eff. 9/8/18; §3, Ord. 2188, eff. 3/8/19; §5(3), Ord. 2216, eff. 7/2/22)

10-2.2.1203 Property Development Regulations.

The following schedule prescribes development regulations for the business park district. The symbol "NA" indicates that there is no restriction for that particular development regulation or it is not applicable in this district. Numbers in parentheses refer to the "Additional Development Regulations" following the schedule. If the "Development Regulations" column is blank, the development regulation is then outlined in the "Additional Regulations" footnote.

he business park district. The symbol "NA" indicates that there is no restriction for that particular development regulation or it is not applicable in this district. Numbers in parentheses refer to the "Additional Development Regulations" following the schedule. If the "Development Regulations" column is blank, the development regulation is then outlined in the "Additional Regulations" footnote.

CLASSIFICATION DEVELOPMENT
REGULATIONS		 ADDITIONAL
REGULATIONS
A. Minimum Lot Area
1. B-P-100 100,000 sq. ft.
2. B-P-200 200,000 sq. ft.
B. Minimum Lot Width
1. B-P-100 200 feet
CLASSIFICATION DEVELOPMENT
REGULATIONS		 ADDITIONAL
REGULATIONS
--- --- ---
2. B-P-200 300 feet
C. Minimum Lot Frontage
1. B-P-100 200 feet
2. B-P-200 300 feet
D. Minimum Lot Depth NA
E. Minimum Setbacks D(2) D(3) D(7)
1. Front D(1) D(4)
a. B-P-100 25 feet
b. B-P-200 75 feet
2. Side 20 feet D(1) D(4) D(5) D(6)
3. Corner Side D(1) D(4) D(6)
a. B-P-100 25 feet
b. B-P-200 37 1/2 feet
4. Rear 20 feet D(1) D(4) D(5) D(6)
F. Maximum Height 40 feet
CLASSIFICATION DEVELOPMENT
REGULATIONS		 ADDITIONAL
REGULATIONS
--- --- ---
G. Density
1. Commercial
a. B-P-100 .5 FAR
b. B-P-200 .3 FAR
H. Maximum Lot Coverage
1. B-P-100 50%
2. B-P-200 30%
I. Maximum Floor Area Ratio
1. B-P-100 .5 FAR
2. B-P-200 .3 FAR
J. Design Review See Sec.
10-2.4.1202.
K. Landscaping See Part III, Article 11. D(7)
L. Fences and Walls See Sec.
10-2.3.104.		 D(8)
M. Antennas See Sec.
10-2.3.120.
N. Nonconforming Conditions See Part III, Article 3.
CLASSIFICATION CLASSIFICATION DEVELOPMENT
REGULATIONS
--- --- ---
O. Elevators See Sec.
10-2.3.124.
P. Recycling Facilities See Part III, Article 7.
Q. Performance Standards
R. Parking and Loading See Part III, Article 2.
S. Signs See Title
10,Chapter 8.
T. Preservation of Trees See Title
3,Chapter 8.
U. Hillside Performance Standards See Part III, Article 4.
V. Storm Water Control See Title
9,Chapter 16.
ADDITIONAL DEVELOPMENT REGULATIONS
D(1) The minimum width of any front, side, corner side, or rear yard adjacent to Ygnacio Valley
Road or Oak Grove Road shall be 75 feet.
D(2) See Section
10-2.3.106,Exclusion of Rights-of-Way.
D(3) Refer to the Zoning Map for Future Street Line Setbacks.
D(4) The minimum front, side, corner side, or rear yard shall be increased by one (1) foot for each
one (1) foot that a building adjacent to such yard exceeds twenty (20) feet in height.
Pursuant to Part IV, Article 12, Design Review, the Design Review Authority may reduce or
waive the additional building setbacks required for buildings over twenty (20) feet in height
upon fnding that the additional setback is: (a) not needed to maintain the overall campus
atmosphere of the business park; and (b) that the proposed building architecture has

ADDITIONAL DEVELOPMENT REGULATIONS

ADDITIONAL DEVELOPMENT REGULATIONS ADDITIONAL DEVELOPMENT REGULATIONS
adequate material and building wall articulation to avoid the appearance of a large,
monolithic structure.
D(5) Where a lot has its side yard or rear yard adjacent to any residential district, the Design
Review Authority, pursuant to Part IV, Article 12, Design Review, may designate such
additional setback requirements necessary to protect and promote appearance, safety and
welfare of surrounding properties.
D(6) The regulations pertaining to corner side yards shall be applicable to side yards and rear
yards abutting a street.
D(7) All yards abutting on a public street, except the portion thereof necessary for driveways,
sidewalks, and bicycle paths, shall be landscaped and shall be maintained in a clean and
neat condition. All landscaping shall be cared for, maintained, watered, fertilized, fumigated,
pruned and kept in a good and growing condition. Pursuant to Part IV, Article 12, Design
Review, the Design Review Authority may permit surface parking lots within any yard
abutting Oak Grove Road or Ygnacio Valley Road, but in no case shall a surface parking lot
be located less than twenty-fve (25) feet from Oak Grove Road and thirty-fve (35) feet from
Ygnacio Valley Road.
D(8) All sites shall be fenced for the purpose of screening loading facilities or other uses which
may be unsightly. Solid fences shall be required along any property line abutting a residential
zone as deemed necessary by the Design Review Authority pursuant to Part IV, Article 12,
Design Review, to screen loading areas, accessory buildings, or other activities from the
streets. Fences within a required front yard or within a required side yard along the street
side of a corner lot shall be of open construction.
D(9) Performance standards shall be maintained as follows:
a. Fire and Explosion Hazards. All activities involving and all storage of fammable and
explosive material shall be provided with adequate safety devices against hazards of fre
and explosion by adequate frefghting and fre-suppression equipment and devices
standard in industry. All incineration shall be prohibited.
b. Radioactivity and Electrical Disturbances. Devices which radiate radio frequency energy
shall be so operated as not to cause interference with any activity carried on beyond the
boundary line of the property upon which the device is located.
c. Noise. The maximum sound level radiated by any use or facility, when measured at the
boundary line of the property on which sound is generated, shall not be obnoxious by
reason of its duration, intensity or pitch as determined by the City.

ADDITIONAL DEVELOPMENT REGULATIONS

d. Vibration. No vibration shall be permitted so as to cause a noticeable tremor beyond the boundary line of the property upon which the vibration exists. e. Smoke. No emission shall be permitted at any point, from any chimney or otherwise, of visible smoke. f. Odors. No emission shall be permitted of odorous gases or other odorous matter. g. Air Pollution. No emission shall be permitted which causes any damage to health, animals, vegetation or other form of property, or which causes soiling, at or beyond the property line of the property where the emission is produced. h. Glare. No direct or reflected glare, whether produced by floodlights, high temperature processes such as combustion or welding, or other processes, so as to be visible from the boundary line of property on which the same is produced, shall be permitted. Sky-reflected glare from buildings or portions thereof shall be so controlled by such reasonable means as are practical to the end that the sky-reflected glare will not inconvenience or annoy persons or interfere with the use and enjoyment of property in and about the area where it occurs. i. The use, in terms of location, size, appearance and signage, will not significantly alter the character of the individual buildings nor change the overall nature of the business park. j. The addition of or expansion of driveways onto or off of Ygnacio Valley Road or Oak Grove Road is prohibited. k. Food Waste. No production of fruits, vegetables, flowers, apiculture or other food production shall be managed in a way as to attract vermin or to cause a nuisance. Food waste shall be stored in appropriate enclosures such as compost cages or bins, vermiculture bins, or other food waste bins. l. A thirty-five (35) foot landscaped setback shall be maintained along Ygnacio Valley Road between Walnut Ave. and Oak Grove Road, excluding required driveways and walkways. Landscaped areas shall consist of at least fifty percent (50%) live plant material, and any remaining area shall be rock, gravel, pebbles, stones, mulch or other natural, non-living material.

(§2, Ord. 2037, eff. 12/17/04; §14, Ord. 2070, eff. 6/20/2008; §16, Ord. 2108, eff. 4/7/12; §1, Ord. 2138, eff. 1/15/2015; §2, Ord. 2146, eff. 4/1/2016; §4, Ord. 2239, eff. 7/5/24)

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The Walnut Creek Municipal Code is current through Ordinance 2251, passed August 16, 2025.

Disclaimer: The City Clerk's Office has the official version of the Walnut Creek

10-2.2.1301

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==> picture [38 x 18] intentionally omitted <==