Local zoning · Foster City

Foster City — Design Review

Design Review under the Foster City local zoning and planning code, with the controlling citations.

Last reviewed: July 2, 2026

Overview

Foster City requires architectural/design review (often called "architectural control and supervision") under Title 17 (Zoning). The rules set what types of exterior changes and new construction need review, who decides, the findings required, and how objective multifamily design standards interact with discretionary review. Key controlling rules live in Chapter 17.58 (Architectural Control and Supervision) and related sections that allocate administrative authority and objective design standards. See the city's zoning rules for context on parking, setbacks and development standards. § 17.58.010–070 .

Note: this page covers only what Foster City's zoning/planning ordinance says about design review (Title 17). For building-code requirements, see the California Building Standards Code.

How Foster City’s Design (Architectural) Review works — quick rules

Which chapter controls: Chapter 17.58 — Architectural Control and Supervision; read § 17.58.010 through § 17.58.070 for intent, scope, improvements subject to review, procedures and findings. § 17.58.010–070 .
What triggers review: a defined list of exterior improvements (new buildings, additions, exterior modifications, decks above grade, changes to rooftop equipment or windows, paving of front yard areas, flagpoles over certain heights, etc.) are subject to review. See § 17.58.020 for the enumerated items. § 17.58.020 .
Pre‑construction requirement: architectural review approval must be obtained prior to obtaining building permits or beginning construction for items listed in § 17.58.020. § 17.58.030 .
Decision makers: the Planning Commission hears major or non‑minor projects; the Community Development Director / Planning Director may administratively review or approve minor improvements and is delegated submittal/completeness rules. Authority and administrative review powers are in § 17.06.030 and § 17.58.040. § 17.06.030 ; § 17.58.040 .
Findings required to approve: the approving body must find consistency with the General Plan and Title 17 and that design conforms to city objective design and development standards and adopted guidelines. See § 17.58.050. § 17.58.050 .
Objective design standards for multifamily/mixed‑use: separate objective design standards apply to most multifamily projects; those standards are applied during the development review process and provide a ministerial pathway for qualifying projects (see Chapter 17.96). § 17.96.010–050 .
Notices, appeals and timing: application completeness is checked within 30 days; notice of decision is provided within 5 days; normal appeal period applies (ten days) and approvals are not effective until appeal period lapses and permittee accepts conditions. See § 17.06.045, § 17.58.040(D–F) and § 17.06.140. § 17.06.045 ; § 17.06.140 ; § 17.58.040(D–F) .

Along the way you should also check overlay rules (for example PD combining districts and the By‑Right Housing Overlay) because they change how design review and standards apply. See the Foster City Overlay Districts page for mapping and overlay descriptions; PD rules are in Chapter 17.36 and BRHO rules are in Chapter 17.94. § 17.36.010–130 ; § 17.94.010–050 .

District-by-district practical breakdown (how design review commonly applies)

Below are Foster City district names that commonly appear in Title 17 and how architectural review interacts with them. Where possible the municipality’s code citations are shown; where the ordinance text does not give a district‑specific design‑review rule, I flag that.

Note: zoning map location/parcel applicability is determined by the official Zoning Map (see Chapter 17.08). § 17.08.010 .

R‑1 (Single‑Family Residential) and R‑1/PD

Purpose and typical uses: single‑family dwellings and accessory uses; R‑1/PD is the planned‑development overlay on R‑1 properties. (See general R district rules; PD overlay rules in Chapter 17.36.) § 17.36.010 .
Design review triggers: typical exterior improvements—room additions, new buildings, changes to exterior materials/colors, decks, front yard paving—are subject to architectural review per § 17.58.020. Some repainting in non‑PD R districts is exempt if colors are not bright/fluorescent/primary; exceptions exist for Eichler houses and special neighborhood centers. § 17.58.020(B) and related exemptions listing repainting rules. § 17.58.020 ; § 17.58.020(B) .
Decision body: minor changes may be approved by the planning director; major additions (e.g., second‑floor additions visible from waterfront or exceeding director’s administrative threshold) will go to Planning Commission. § 17.58.040(C) .

R‑3, R‑3/PD (Medium density multifamily / Planned Development)

Purpose and typical uses: multifamily residential uses, often under PD design guidelines. PD districts may have specific design standards adopted via a general/specific development plan. § 17.36.030–080 .
Design review interaction: multifamily projects may fall under the objective multifamily standards in Chapter 17.96 (applies to most multifamily projects except limited exclusions). Chapter 17.96 governs site and building design standards that reviewers use in findings. § 17.96.020–030 .
Where PD applies: within PD overlays the planning commission can supersede/adjust many typical dimensional controls subject to an approved specific development plan. § 17.36.020 .

R‑4 (High‑Density Multiple‑Family)

Purpose and typical uses: high‑density apartment residential; specific density, yard and coverage standards are listed in Title 17 tables (see Chapter headings for R‑4). Projects are expected to comply with Chapter 17.96 design standards and are commonly subject to architectural review for exterior design and massing. § 17.20.010–040 and § 17.96.010–050 .

C (Commercial), C‑2/PD, M (Industrial / Manufacturing)

Purpose and typical uses: retail, neighborhood business, commercial centers (C), mixed commercial/industrial (M). PD overlays affect allowed design and dimensional flexibility. § 17.36.010–060 .
Design review triggers: changes to building materials/colors, rooftop equipment, storefront modifications, and master sign programs may need architectural review; in PD districts, the planning commission may approve design guidelines that supersede other Title 17 provisions. § 17.58.020 and § 17.58.060 .
Special note: certain neighborhood shopping centers have exceptions for repainting and minor changes (see exemptions listings). § 17.58.020(B)(f) .

PD (Planned Development Combining District)

Purpose: to allow flexibility in design and to create specific development plans. PDs can waive many usual dimensional standards (except off‑street parking) with planning commission approval. § 17.36.010–020 .
Design review relationship: PDs normally adopt either a general or specific development plan and may include their own design guidelines; the planning commission or city council adopts those and they can supersede Title 17 where written. § 17.36.030; § 17.58.060 .

BRHO (By‑Right Housing Overlay)

Purpose and effect: provides a by‑right pathway for qualifying multifamily development that meets inclusionary affordable housing thresholds. When projects meet BRHO requirements they may avoid discretionary review and receive ministerial review by the Community Development Director, but the director may refer projects for comment on objective design compliance. § 17.94.040–050 .

Quick standards & decision‑relevant items (table)

What the reviewer cares about	Short rule or standard	Code Reference
Which improvements trigger review	New buildings, additions, exterior modifications (windows, doors, roof materials), decks above grade, front yard paving, flagpoles above district heights, exterior storage of boats/RVs, etc.	§ 17.58.020
Pre‑construction requirement	Architectural review approval required before building permits for listed items	§ 17.58.030
Administrative vs Commission review	Planning Director may approve minor changes; Planning Commission reviews major improvements and any items the director refers	§ 17.06.030; § 17.58.040(C)
Findings for approval	Must be consistent with General Plan/Title 17 and conform to objective design/development standards and adopted guidelines	§ 17.58.050
Objective multifamily standards	Most multifamily projects must meet Chapter 17.96 objective standards; process and exceptions there	§ 17.96.020–030
Application completeness & timing	Completeness determination within 30 days; notice of decision within 5 days; ten‑day appeal period	§ 17.06.045; § 17.58.040(D–F); § 17.06.140

How design review intersects with related topics (links)

Review outcomes will reference city development standards; consult the Foster City Development Standards when preparing materials.
Parking design and capacity requirements are enforced separately under Chapter 17.62; see Foster City Parking since parking minimums and configuration affect site plan review. § 17.18.050 and parking cross‑references appear in Title 17.
Overlay rules can change whether a project is discretionary (PD, BRHO). See Foster City Overlay Districts and Chapter 17.36 and 17.94. § 17.36.020; § 17.94.050
Landscaping and screening expectations are considered during architectural/site review — consult Foster City Landscaping and Screening.
Accessory Dwelling Units: Foster City's Title 17 applies objective rules for many housing actions; however, the code excludes ADUs from some Chapter 17.96 requirements — see Foster City ADUs and state ADU law references. § 17.96.020(C)
For building‑code technical compliance (structural, life‑safety) reference the California Building Standards Code; design review is separate from Title 24 compliance.

Checklist — what to submit / satisfy for an architectural review application

Completed architectural review application and fee as set by City Council; include all items the Community Development Director requires. § 17.58.040(A)
Plans showing elevations, materials, colors, roofing, mechanical equipment locations, site plan with setbacks and dimensions, and landscape plans if applicable. § 17.58.040(A)
Evidence you offered adjacent property owners an opportunity to review and comment (signed statements or certified mail receipts) as described in the application requirements. § 17.58.040(A)
If project is multifamily, demonstrate compliance with Chapter 17.96 objective design standards or submit exception requests with supporting information. § 17.96.030
For PD/overlay sites: include the specific/general development plan, any PD design guidelines, and show how the proposal fits or requests deviations allowed under PD rules. § 17.36.030–080
Acknowledgement of acceptance of any conditions and understanding of appeal period procedures; the permit does not take effect until acceptance and appeal period lapse. § 17.58.040(E–F)

Risks & Ambiguities

Issue	Why it matters	What to verify
Are ADUs subject to discretionary architectural review?	State ADU law restricts discretionary review for many ADUs; Foster City’s Chapter 17.96 excludes ADUs from some objective standards but Title 17 still lists exterior improvements subject to review. The overlap is not spelled out clearly in retrieved texts.	Verify with the Community Development Director whether ADU proposals are ministerial for design or require architectural review on a case‑by‑case basis. Not found in retrieved materials. § 17.96.020(C)
Waterfront view impacts and when the director vs commission hears additions	Waterfront visibility changes tip many additions to Commission review; the criteria are partly discretionary.	Confirm whether a proposed second‑floor or deck is "visible" from the waterfront and whether it exceeds director thresholds. § 17.58.040(C)
Which items are "minor" vs "major" changes for administrative approval	The code gives the director authority to approve minor changes but does not exhaustively list every minor item.	Discuss the specific change with the planning staff early (pre‑application) to get an administrative determination. § 17.06.030(B)
PD district variances vs architectural guidelines	In PDs many dimensional standards may be waived or replaced by PD guidelines; failing to identify applicable PD plan provisions can cause rejections.	Pull the PD-specific development plan and adopted PD guidelines for the parcel (verify via Planning Department or zoning map). § 17.36.020; § 17.58.060
Applicability of Chapter 17.96 objective standards to partial‑lot changes	Chapter 17.96 has rules for partial‑parcel projects but application boundaries can be technical.	If your project affects less than 100% of a parcel, confirm which portions of the site the standards apply to per § 17.96.020(B). § 17.96.020(B)

Plain‑English Summary

If you change a building’s exterior, build an addition, install a raised deck, alter roof materials, add paving in a front yard, or otherwise alter the outside of a property in Foster City, you will most likely need an architectural (design) review approval before you get a building permit. The Planning Director can approve small changes; bigger or waterfront‑sensitive projects go to the Planning Commission. Approval requires findings that the design fits the General Plan and Title 17 standards and any applicable objective multifamily design rules. § 17.58.020–050; § 17.06.030; § 17.96.020

Source References

Foster City Municipal Code, Title 17 — Chapter 17.58, Architectural Control and Supervision (intent, improvements subject to review, procedures, findings). § 17.58.010–070
Foster City Municipal Code, Title 17 — Architectural review improvements list and procedural details. § 17.58.020; § 17.58.030; § 17.58.040
Foster City Municipal Code — Findings for architectural review. § 17.58.050; § 17.58.060
Foster City Municipal Code — Planning Director authority and application completeness rules. § 17.06.030; § 17.06.045
Foster City Municipal Code — Multifamily and residential mixed‑use objective design and development standards (Chapter 17.96) and process. § 17.96.010–050
Foster City Municipal Code — Planned Development Combining District (PD) and design guidelines. § 17.36.010–080
Foster City Municipal Code — By‑Right Housing Overlay (BRHO) process and ministerial review. § 17.94.010–050
Foster City Municipal Code — Setbacks and related yard/distance measurements relevant to site design. § 17.54.050–090

Sources

Retrieved passages

Foster City Zoning Code (§ 2) High relevance
Foster City Zoning Code (Title 17) High relevance
Foster City Zoning Code (Section 17.06.140) High relevance
Foster City Zoning Code (§ 4) High relevance
Foster City Zoning Code (chapter establishes) High relevance
CBC § 3 (§ 3) High relevance
Foster City Zoning Code (Chapter 17.36) High relevance
Foster City Zoning Code (§ 10-410.010) High relevance

Cited sections

Official Foster City code library

Frequently asked questions

Do I always need design review for a room addition in Foster City?

Not always. Room additions are listed among improvements potentially subject to architectural review; second‑floor additions on non‑waterfront property and many additions are specifically called out for director or commission review. Whether your addition is minor (planning director) or major (planning commission) depends on visibility, size, waterfront impact, and director thresholds. § 17.58.020; § 17.58.040(C)

What happens if my exterior paint color changes?

Repainting of buildings in R districts that are not in a PD may be exempt from architectural review provided the new color is not a bright pastel, fluorescent, primary color, or otherwise out of character. Some neighborhood commercial centers and special house types (e.g., Eichler) have different rules—verify exemptions. § 17.58.020(B)

Who can approve minor design changes?

The Community Development Director (Planning Director) has authority to administratively approve minor modifications to colors, materials, elevations, site and landscape plans so long as changes are minor and do not alter the basic character of the approved project. Major changes go to the Planning Commission. § 17.06.030(B)

Are multifamily projects subject to different design rules?

Yes. Most new or replacement multifamily residential projects must comply with the objective design and development standards in Chapter 17.96, which are applied as part of project review. There are explicit exclusions (for example, R‑1 and certain ADUs). § 17.96.010–030

Do PD overlays change design review requirements?

Yes. A PD (Planned Development) combining district uses a general or specific development plan that can include its own design standards and may waive many standard dimensional controls (except parking). PD development plans and PD guidelines take precedence where they differ. § 17.36.020; § 17.58.060

How long until the City tells me if my architectural review application is complete?

The Community Development Director or designee must determine completeness within 30 days of application submittal. § 17.06.045

If my project meets the BRHO requirements, do I still get discretionary design review?

Projects qualifying under the By‑Right Housing Overlay (BRHO) may be reviewed ministerially by the Community Development Director and avoid discretionary review, provided they meet the BRHO criteria; the director may still refer projects for comment on objective design standards. § 17.94.040–050

Does architectural review replace the building permit review?

No. Architectural review is a zoning/planning approval required before building permits for listed items; compliance with the California Building Standards Code and all building permits is a separate process. § 17.58.030

How are appeals and conditions handled after architectural approval?

Notice of decision is provided within five days; approvals are not effective until the ten‑day appeal period lapses and the permittee acknowledges acceptance of any conditions. The appeal period and related procedures are in Title 17. § 17.58.040(D–F); § 17.06.140

Will changing a roof material trigger review?

Yes — changes in roofing material or color are explicitly listed among modifications that are subject to architectural review unless specifically exempt. § 17.58.020(A)(2)

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