Local zoning · Millbrae

Millbrae — Variances and Exceptions

Q: What is the difference between an exception and a variance in Millbrae?

An exception is the planning commission’s vehicle to deviate from specific development standards when those deviations are allowed in the code and requires findings that the deviation won’t be detrimental or incompatible with adjacent properties § 10.05.2530 . A variance is narrower: it is appropriate only when no other regulatory relief exists, cannot permit a use prohibited in the zone, and requires findings about special circumstances and that the variance not confer a special privilege § 10.05.2540 .

Q: Who can approve a reasonable accommodation for disability access?

The city manager (or designee) can grant limited administrative exceptions for minor improvements to existing residences (ramps, widened doorways, small expansions), subject to caps and findings; these are processed without a public hearing § 10.05.0420 .

Variances and Exceptions under the Millbrae local zoning and planning code, with the controlling citations.

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Last reviewed: July 2, 2026

Overview

This page explains how the City of Millbrae handles variances, exceptions, waivers, and related administrative relief from development standards under the local zoning code (commonly organized as Title 10). It is Millbrae‑specific: it explains who decides, the findings required, common special‑case exception types (e.g., reasonable accommodation and density‑bonus waivers), and how relief interacts with district standards (setbacks, height, parking). Where the code gives a rule, this page cites the controlling Millbrae code § and the retrieved ordinance file preview. Verify parcel‑specific questions with the city. Do not rely on this page for building‑code (Title 24) or tenant/housing law issues; those topics are treated elsewhere.

How Millbrae organizes relief (quick)

Exceptions to development standards: planning commission review and findings required — § 10.05.2530 .
Variances (deviations where no other relief exists): planning commission review; stricter findings about special circumstances — § 10.05.2540 .
Reasonable accommodations (limited admin exceptions for disability access): city manager may grant under specified restrictions — § 10.05.0420 .
Density bonus waivers / concessions required by state density‑bonus law: processed under the City’s density bonus article; waivers granted unless specific adverse impacts are found — § 10.05.0430 .
Permits, exceptions, and variances expire if no building permit is pulled within the timeframe set by the code — § 10.05.2550 .

The rest of this page explains how these apply district‑by‑district, the standard findings, and practical steps.

District‑by‑district notes (where exceptions/variances matter)

Note: The Millbrae land‑use table names the primary districts R-1LL, R-1, R-2, R-3, PF, PD, C, DTECRSP, MSAPD; permitted/conditional uses by district are shown in the land‑use table in § 10.05.0410 . Below are the decision‑relevant districts where development standards and the routine need for exceptions/variances are most common.

R-1 (Single‑family residential)

Purpose / typical uses: Single‑family dwellings, accessory structures; typical household living uses are permitted by right in R-1 per the land‑use table § 10.05.0410 .
Key dimensional standards: Front setback 20 ft; interior side 5 ft (may be reduced to 10% of lot width but not less than 3 ft); exterior side 10 ft; rear 10 ft. Upper‑floor setbacks add increments; see § 10.05.0620 for full ground and upper floor rules and allowable encroachments. § 10.05.0620 .
Where it applies: City single‑family neighborhoods (see Millbrae land‑use map and Table 1 in § 10.05.0410). Common relief requests: small side‑yard reductions, fence exceptions, and limited encroachments that may be processed as exceptions or, for disability access, under reasonable accommodation § 10.05.0420 .

R-2 (Two‑family / low‑density multi)

Purpose / typical uses: Duplexes, triplexes, multi‑family elements as indicated in Table 1 § 10.05.0410 .
Key dimensional standards: ground floor/setback matrix for duplex/triplex (front typically 20 ft; side and rear minimums vary by unit type); see § 10.05.0720 for the duplex/triplex setback table and encroachment rules. § 10.05.0720 .
Where it applies: Low‑density multi family neighborhoods. Typical relief: setback exceptions, driveway/garage location, and parking adjustments tied to parking standards § 10.05.2100 .

R-3 (Higher‑density residential)

Purpose / typical uses: Multiple‑family dwellings and higher density residential uses, conditioned in some cases (see Table 1 § 10.05.0410) .
Key dimensional standards: larger minimum lot coverage/FAR rules, stepback requirements for upper floors, and rear/side increases tied to building height; see § 10.05.0820 (residential development standards for this district). § 10.05.0820 .
Where it applies: Multi‑family blocks and transition zones near corridors; common variances: FAR/height transitions, side/rear separation, and parking layout.

C (Commercial)

Purpose / typical uses: commercial uses and mixed‑use where allowed by the land‑use table § 10.05.0410 .
Key dimensional standards: Lot width min 25 ft; max lot coverage 100%; FAR no limit; max height 40 ft (with exceptions and approach for height exceptions) — see § 10.05.1020. Height exceptions for specific appurtenances and other height increases require either a height exception or a variance depending on the structure — § 10.05.1020 .
Where it applies: Commercial corridors and downtown areas; sign exceptions and sign variances are processed under Title 10 sign article (see § 10.10.160) .

Planned Development (PD), Millbrae Station Area Specific Plan (MSAPD) and DTECRSP

Purpose / typical uses: PD and specific‑plan districts rely on a site development/precise plan; uses and standards are set in the approved plan rather than strictly by the base district. See site development review standards for MSAPD in § 10.05.1720 and the general PD findings in § 10.05.1530 – § 10.05.1540 .
Key notes on relief: Exceptions and variances are still used where the approved plan prescribes deviations, and the planning commission’s site development review requires findings that the proposal conforms to the specific plan’s goals § 10.05.1720 .

How Millbrae distinguishes: Exception vs. Variance vs. Waiver vs. Administrative accommodation

Exception (planning commission) — used to deviate from specific development standards; applicant submits plans and justification; Planning Commission makes compatibility/detriment findings before approval — § 10.05.2530 .
Variance (planning commission; narrower) — a variance is allowed only when no other regulatory relief exists and cannot be used to allow a prohibited use; stricter findings about special circumstances (size, shape, topography, surroundings) and no grant of special privilege — § 10.05.2540 .
Waiver (density bonus / state law) — used only in the context of density bonus projects to make construction physically possible when the project qualifies under Government Code § 65915; City must grant waiver unless written findings supported by substantial evidence justify denial under the narrow, statutorily‑defined circumstances — § 10.05.0430 .
Reasonable accommodation (administrative) — limited, non‑public administrative exceptions for disabled access to existing residences; no public hearing; restrictions on size and cumulative increases apply — § 10.05.0420 .
Sign and fence exceptions — treated under their respective chapters: sign exceptions in § 10.10.160 and fence exceptions in § 10.05.2010 (both require specific findings) .

Decision‑relevant table (quick reference)

Relief type	Who decides	Key findings required	Typical uses / limits	Code reference
Exception	Planning Commission	Deviation won’t be detrimental to abutting parcels; compatible with site	Setback reductions, lot coverage, fences, sign exceptions	§ 10.05.2530
Variance	Planning Commission	No special privilege; special circumstances (size/shape/topography) cause deprival of privileges	Major deviations where no other relief exists; cannot permit prohibited uses	§ 10.05.2540
Reasonable accommodation	City Manager (designee)	Necessary for disabled access; limited size/encroachment caps; no hearing	Ramps, wider doorways, limited FAR/setback relief for existing residences only	§ 10.05.0420
Density bonus waiver	Decision‑making body as part of density bonus approval	Project eligible for density bonus; waiver needed to physically build; denial only for narrow adverse impacts	Waivers to FAR/height/parking to enable density bonus under state law	§ 10.05.0430
Expiration	Administrative	Building permit not submitted within 1 year (or other period set) = null/void unless extended	Permits, exceptions, variances expire if not acted on	§ 10.05.2550

Checklist — what an applicant must submit / demonstrate

Completed application form signed by property owner or agent (see procedural rules) § 10.05.2540(B) .
Filing fee (city council sets fee; collected in full for each component when combined) § 10.05.2530(B) .
Site plan, elevations, dimensioned setbacks and development‑standards calculations (show existing vs. proposed) — required exhibits noted across the exception/variance rules § 10.05.2530(B), § 10.05.2540(B) .
Written justification addressing the specific findings: compatibility/detriment (exceptions) or special circumstances/no special privilege (variances) § 10.05.2530(D) § 10.05.2540(D) .
For density bonus waivers: documentation establishing eligibility under state density bonus law and financial or cost evidence for incentives/concessions as required § 10.05.0430(D) .
If within a specific plan or PD: site development materials as required by MSAP/PD procedures (environmental review, design standards) § 10.05.1720 .
If the request touches parking, design review, signage, historic resources, or ADUs, include responses showing compliance or justification; consult the relevant chapters and internal guidance: Millbrae Parking, Millbrae Design Review, Millbrae Signage, Millbrae Historic Preservation, Millbrae ADUs.

Risks & Ambiguities

Issue	Why it matters	What to verify
Variance cannot permit a prohibited use	Variances only modify standards, not the allowed uses; cannot be used to legalize a use prohibited in the zoning district	Confirm allowed uses in Table 1 (§ 10.05.0410) and that the relief sought does not change use type § 10.05.0410
"Special privilege" finding	Any variance must not be a special privilege compared to surrounding properties; this is a discretionary, fact‑based test § 10.05.2540(D)(1)	Prepare neighborhood comparables and explain why relief is property‑specific § 10.05.2540
Density‑bonus waiver denials (historic or safety impacts)	City may deny waivers only for narrow, evidence‑based public health/safety or historic‑resource impacts under state law § 10.05.0430(D)–(E)	If pursuing a waiver, include objective evidence and evaluate historic resource status early § 10.05.0430
Expiration/Extensions	Approved exception/variance becomes void if no building permit within the prescribed time (1 year default; planning commission may set up to 3 years) § 10.05.2550	Confirm approval date, set a program to pull building permit, request extension with public hearing if needed § 10.05.2550
Overlapping relief types (exception vs variance vs design review)	Multiple approvals may be required and fees collected per component; commission may act separately on each § 10.05.2530(C), § 10.05.2540(C)	Combine applications to streamline processing but expect separate findings and fees § 10.05.2530(C)

Practical guidance — plain English (homeowner)

If you need to build closer to your property line, exceed a height limit, or alter a fence beyond the table, you will usually apply for an exception (planning commission) — unless your issue is unusual (then it’s a variance) or it is a small modification to help a disabled household member (administrative reasonable accommodation). For bigger projects tied to state density bonuses, the city will consider waivers under the rules in the density bonus article. Always include scaled plans, explain how neighbors won’t be harmed, and note that approvals expire if you don’t pull permits — so start the building permit process promptly. Relevant rules are in § 10.05.2530, § 10.05.2540, and § 10.05.0420.

Source References

Millbrae Municipal Code, Article XXV (Exceptions & Variances): § 10.05.2530 (Exceptions) ; § 10.05.2540 (Variances) .
Reasonable accommodation (admin exceptions for disability access): § 10.05.0420 .
Density bonus / waivers (implementation of Gov. Code § 65915): § 10.05.0430 .
District development standards cited (examples): § 10.05.0620 (R‑1 setbacks / upper floor rules) ; § 10.05.0720 (R‑2 duplex/triplex setbacks) ; § 10.05.0820 (R‑3 standards) ; § 10.05.1020 (C district development standards) .
Sign and fence specific exception rules: § 10.10.160 (Sign exceptions/variances) ; § 10.05.2010 (Fence exceptions) .
Expiration / extension of permits (including exceptions / variances): § 10.05.2550 .
Millbrae land‑use table showing permitted/conditional uses: § 10.05.0410 (Table 1) .
Ordinance source / HTML: Millbrae zoning code file retrieved from eCode360 (Millbrae) as compiled in the uploaded file (download header indicates https://ecode360.com/MI4538) .

Sources

Retrieved passages

Millbrae Zoning Code (§ 3) High relevance
Millbrae Zoning Code (§ 10.05.2530) High relevance
Millbrae Zoning Code (§ 2) High relevance
Millbrae Zoning Code (§ 8605) High relevance
Millbrae Zoning Code (Article XXV) High relevance
Millbrae Zoning Code (§ 10.10.150.) High relevance
Millbrae Zoning Code (section shall) High relevance
Millbrae Zoning Code (§ 10.05.0430) High relevance
Millbrae Zoning Code (§ 10.05.0410) High relevance
CBC § 10.05.2010 (section may) High relevance
Millbrae Zoning Code (Article XVI) Medium relevance
Millbrae Zoning Code (§ 10.10.160) Medium relevance
Millbrae Zoning Code (§ 7906) Medium relevance
Millbrae Zoning Code (§ 7909) Medium relevance
Millbrae Zoning Code (Article XVI) Medium relevance
Millbrae Zoning Code (§ 8705) Medium relevance

Cited sections

Official Millbrae code library

Frequently asked questions

What is the difference between an exception and a variance in Millbrae?

An exception is the planning commission’s vehicle to deviate from specific development standards when those deviations are allowed in the code and requires findings that the deviation won’t be detrimental or incompatible with adjacent properties § 10.05.2530 . A variance is narrower: it is appropriate only when no other regulatory relief exists, cannot permit a use prohibited in the zone, and requires findings about special circumstances and that the variance not confer a special privilege § 10.05.2540 .

Can the city grant a waiver for a density‑bonus project that exceeds height or parking limits?

Yes. For qualifying density‑bonus projects the city may grant waivers of development standards (FAR, height, parking, setbacks) necessary to make the increased density physically possible. The waiver process follows the city’s density bonus article and state law; the city must deny the waiver only for very narrow, evidence‑based reasons (public health/safety or adverse historic impacts) § 10.05.0430 .

Who can approve a reasonable accommodation for disability access?

The city manager (or designee) can grant limited administrative exceptions for minor improvements to existing residences (ramps, widened doorways, small expansions), subject to caps and findings; these are processed without a public hearing § 10.05.0420 .

If the planning commission approves my exception/variance, how long do I have to start construction?

By default an approved exception or variance becomes null and void if a building permit application is not submitted within one year from approval, unless a different period (up to three years) was specified; extensions require planning commission action and a public hearing § 10.05.2550 .

Can a variance be used to allow a land use that the zoning table prohibits?

No. The code expressly forbids using a variance to permit a use that the district prohibits. Variances only modify dimensional or development standards, not the allowed use list § 10.05.2540(A) . Check the land‑use table in § 10.05.0410 to confirm permitted uses before applying § 10.05.0410 .

What findings do I need to make for a fence exception in a residential yard?

Fence exceptions require findings that the fence/wall will not obstruct visibility, is in scale and harmonious with the neighborhood, will not be materially detrimental to nearby property, and is not inconsistent with the General Plan; these are spelled out in the fence standards and exception sub‑section § 10.05.2010 .

Do sign exceptions require the same public hearing as other exceptions?

Sign exceptions may be administratively reviewed for small signs under § 10.10.160, but master sign program exceptions and larger sign exceptions require planning commission review; in some sign variance cases the public‑hearing requirement is modified per the sign chapter § 10.10.160 .

If I’m inside the Millbrae Station Area Specific Plan (MSAPD), how does that affect exception/variance requests?

Projects inside MSAPD are reviewed against the specific plan and its site development standards; planning commission site development review requires findings that the project conforms to the MSASP goals and standards, so exceptions/variances must be justified in that specific‑plan context § 10.05.1720 .

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