Local zoning · Seaside

Seaside — Nonconforming Uses

Q: If my nonconforming business stops operating for a while, when is the nonconforming status lost?

If the use is discontinued for 180 continuous days , all rights to legal nonconforming status terminate. The Zoning Administrator may extend the period up to 18 months for documented, justifiable reasons. § 17.72.040.A .

Q: The building was partly destroyed — can I rebuild the nonconforming structure?

Yes, subject to thresholds. If repair/replacement cost is ≤60% of assessed value immediately before damage, you may restore to the same size/use if work starts within 12 months and is diligently pursued. Costs >60% require Minor Use Permit and a public‑benefit finding. § 17.72.040.B; § 17.72.030.B.2 .

Q: If I change a nonconforming use to a conforming one, can I go back?

No. If a nonconforming use is changed to a conforming use, no nonconforming use may be resumed afterwards . See § 17.72.030.A.3 . § 17.72.030.A.3 .

Nonconforming Uses under the Seaside local zoning and planning code, with the controlling citations.

Ask a question free See coverage

Last reviewed: July 3, 2026

Overview

This page explains how the City of Seaside’s Zoning Ordinance (Title 17) treats nonconforming uses, nonconforming structures, and nonconforming parcels — what may continue, when status is lost, and what approvals are needed to alter or restore nonconformities. The controlling rules are in Chapter 17.72 (Nonconforming Uses, Structures, and Parcels) of the Seaside Zoning Ordinance; follow-up approvals (Zoning Clearance, Minor Use Permit, Use Permit, Architectural Review) are governed elsewhere in Title 17. See the city’s basic planning menu for context on Seaside planning and zoning in general: Seaside zoning & planning overview. § 17.72.010–060 .

What the ordinance requires (core rules, with code anchors)

Continuation: A legally established nonconforming use or structure may continue and ownership may change, but continuation must comply with Chapter 17.72 restrictions. § 17.72.030 .
No enlargement for most nonresidential/multi‑family: A nonconforming nonresidential or multi‑family structure generally may not be enlarged, extended, increased, reconstructed (with exceptions), or relocated — except that additions that are fully compliant with current standards and do not increase the nonconformity are permitted. § 17.72.030.B.1.a .
Residential exception (rehab/additions allowed with review): Substantial rehabilitation or additions to an existing nonconforming single‑family or multi‑family residential use can be allowed with a Minor Use Permit and Board of Architectural Review approval when the thresholds in the code are met. Substantial = proposed addition of ≥ 25% floor area and/or construction value ≥ 50% of assessed value before rehabilitation. § 17.72.030.A.2 .
Additions into setbacks for single‑family: Small additions that encroach no farther than the existing nonconforming portion may be allowed by ministerial or discretionary approvals depending on height and extent (Zoning Clearance or Minor Use Permit; Board of Architectural Review for taller additions). See § 17.72.030.B.1.b(1–3). § 17.72.030.B.1.b .
Reconstruction after involuntary damage: If a nonconforming structure is involuntarily damaged or destroyed, single‑ or multi‑family dwellings may be reconstructed to the same footprint, height, and number of units (subject to Building/Fire Code and certain code thresholds). For destruction by accident: if repair cost ≤ 60% of assessed value, restoration to same size/use is allowed if begun within 12 months; repairs costing >60% require Minor Use Permit and findings. § 17.72.030.B.2; § 17.72.040.B .
Loss of nonconforming status by discontinuance or destruction:
- Discontinuance: A nonconforming use is terminated after a continuous 180‑day discontinuance, unless the Zoning Administrator grants an extension up to 18 months for documented reasons. § 17.72.040.A .
- Destruction: Destruction terminates status except as above for residential reconstruction; the 60% repair/replace threshold applies. § 17.72.040.B .
Nonconforming parcels: A parcel created legally before the ordinance that now fails to meet minimum area or width may still be a legal building site if (a) created by recorded subdivision, (b) created by deed prior to the change, or (c) reduced by government acquisition within the specified limits. Subdivision that increases nonconformity is prohibited. § 17.72.050 .
Nonconforming due to lack of permit: Uses that previously existed without a Use Permit that would now require one are deemed conforming only to the extent of the prior lawful use (hours, site area boundaries). Prior permits remain controlling. § 17.72.060 .
Nonconforming parking: Special rules apply when existing parking does not meet Chapter 17.34. For residential changes that do not increase units or floor area, no additional parking is required; for nonresidential changes, the site must maintain existing parking and add spaces for any additional floor area per Chapter 17.34. § 17.72.030.C . See Seaside rules on parking.

District-by-district (how the nonconforming rules interact with Seaside’s zones)

The Zoning Map establishes the City’s zones listed in Table 1‑1; Chapter 17.06 sets the zone symbols used below. § 17.06.020 / Table 1‑1 .

Note: the nonconforming rules in Chapter 17.72 apply across zones, but the practical effect differs by district because of permitted uses and development standards. Below are the principal zones used in Seaside (purpose, typical uses, key dimensional standards) — cite the local zone chapters and their development standards where provided.

RS‑8 / RS‑12 (Single‑Family Residential)

Purpose: low‑density single‑family neighborhoods. § 17.12 and Table 2‑3 (Residential zone development standards).
Typical permitted uses: single‑family dwelling, accessory structures, home occupations (see Table 2‑1). § 17.12.030 .
Key standards (Table 2‑3): front setback 15 ft; side interior 5 ft (10 ft combined); max FAR 0.45; max height 24 ft for typical single‑family; site coverage up to 65%. See Table 2‑3 and related notes. § 17.12.050 / Table 2‑3 .
Where it applies: city neighborhoods designated single‑family on the Zoning Map. § 17.06.020 .
Nonconforming implications: Single‑family dwellings that are nonconforming (setbacks/height) may be repaired and may receive limited additions per § 17.72.030.B.1.b; residential rehabilitation exceptions apply (Minor Use Permit + Architectural Review) when hitting the 25%/50% thresholds. § 17.72.030.A.2; § 17.72.030.B.1.b .

RM (Medium Density Residential)

Purpose: mix of housing types (duplexes, triplexes, small multi‑family). § 17.12.020–030 .
Typical uses: duplexes, triplexes, small multi‑family; some accessory uses. § 17.12 / Table 2‑1 .
Key standards (Table 2‑3): density ~ 1 du / 2,904 sf; front setback 15 ft; side 5 ft; FAR 0.45; height varies (24 ft typical for smaller buildings; larger multi‑family allowances described in Table 2‑3). § 17.12.050 / Table 2‑3 .
Nonconforming implications: multi‑family nonconforming structures are more constrained for exterior expansions (see § 17.72.030.B.1.a). § 17.72.030.B.1.a .

RH (High Density Residential)

Purpose: apartments, townhouses, higher‑density housing. § 17.12 .
Typical uses: multi‑family dwellings, some institutional uses allowed by permit. § 17.12 / Table 2‑1 .
Key standards (Table 2‑3): density up to 25 du/acre (≈1 unit/1,742 sf), setbacks 15 ft front; side/rear standards; FAR 0.45; height up to 48 ft for multi‑family in certain cases. § 17.12.050 / Table 2‑3 .
Nonconforming implications: multi‑family nonconforming structures cannot be enlarged except in limited circumstances and reconstruction after damage follows the residential rules in § 17.72.030.B.2. § 17.72.030 .

CMX (Commercial Mixed‑Use) and CC (Community Commercial)

Purpose: neighborhood and mixed‑use corridors. § 17.14 and Table 2‑6.
Typical uses: ground‑floor commercial (retail, restaurants), upper‑floor residential in CMX, offices. § 17.14 / Table 2‑4 .
Key standards (Table 2‑6): setbacks 0 ft (none required) for CMX/CC, max height = lesser of 4 stories or 48 ft, FAR 2.0 in Broadway Corridor (0.50 elsewhere for CC). § 17.14.050 / Table 2‑6 .
Nonconforming implications: changes of use that increase floor area must provide additional parking per Chapter 17.34 unless qualifying as residential change under § 17.72.030.C. See development standards and parking. § 17.72.030.C .

CRG / CA / CH (Regional Commercial / Automotive / Heavy Commercial)

Purpose: larger retail, auto dealerships, heavy commercial/industrial uses. § 17.14.030 .
Typical uses: big‑box retail, auto sales and services, warehousing and manufacturing (CH). Table 2‑4 .
Key standards: CRG FAR 1.0 (hotels up to 3.0); CH FAR 0.5; setbacks vary (some 0 ft, CA has special rules, CH often has 10 ft front setbacks per Table 2‑6). Table 2‑6 / § 17.14.050 .
Nonconforming implications: nonresidential nonconforming structures are tightly limited on expansion; additions must not increase the nonconformity and parking consequences are carefully applied under § 17.72.030.C. § 17.72.030.B.1.a; § 17.72.030.C .

Special purpose zones and overlays (V‑FO, OSR, OSC, PI, M; ORD, H1 overlays)

Purpose and where they apply: Table 1‑1 and Chapters 17.18 (special purpose), 17.20 (specific plans). V‑FO (Visitor‑Serving Fort Ord) has its own Chapter and additional rules (hotel room cap, view protections). Overlays like ORD (Ordnance Remediation) and H1 (Highway 1 Design) impose additional standards. § 17.06.020; § 17.18; § 17.20 .
Nonconforming implications: Chapter 17.72 applies, but specific plans and overlays may alter standards; where specific‑plan or overlay conflicts exist, the specific plan/overlay provisions control. Verify applicability with the Director. § 17.20.020; § 17.06.020 . See overlay districts.

Quick decision‑relevant table (short summary for planners/applicants)

Issue / Action	Rule (plain)	Code Reference
Continue nonconforming use	Allowed to continue, but no enlargement of a nonconforming land use (nonresidential)	§ 17.72.030.A.1
Residential rehab/additions	Allowed with Minor Use Permit + Board of Architectural Review if ≥25% floor area or ≥50% assessed value	§ 17.72.030.A.2
Single‑family exterior additions into setback	May be allowed by Zoning Clearance or Minor Use Permit depending on height/extent (≤18 ft vs >18 ft)	§ 17.72.030.B.1.b(1–3)
Reconstruction after damage	If repair cost ≤60% of assessed value, restoration to same size/use allowed if started within 12 months; >60% needs Minor Use Permit and findings	§ 17.72.040.B; § 17.72.030.B.2
Loss by discontinuance	Continuous 180 days of discontinuance terminates nonconforming rights (Zoning Admin may extend up to 18 months)	§ 17.72.040.A
Nonconforming parcel = legal buildable	Parcel may still be legal if recorded subdivision deed or other listed criteria; no subdivision that increases nonconformity	§ 17.72.050
Nonconforming parking	Residential changes that don’t increase units/area: no new spaces required. Nonresidential increases must add spaces per Chapter 17.34	§ 17.72.030.C

Checklist — what an applicant must submit / satisfy when dealing with a nonconforming situation

Establish and document the prior lawful use/structure date and extent (historical permits, photos, appraisals). Verify with the City. § 17.72.020
For residential substantial rehab: prepare cost estimates and floor‑area calculations showing whether the proposal meets the 25% / 50% thresholds — include Building Permit valuation. § 17.72.030.A.2
If reconstructing after damage, obtain estimates proving whether repair cost is ≤60% or >60% of assessed value; plan to begin restoration within 12 months if ≤60%. § 17.72.040.B
If any exterior addition encroaches into an existing nonconforming setback, check whether a Zoning Clearance, Minor Use Permit, and/or Board of Architectural Review is required. § 17.72.030.B.1.b ; see design review.
If changing use: determine whether change is to a conforming use (resets nonconforming rights) or to another nonconforming use; a Use Permit may be required. § 17.72.030.A.3
Check parking impacts (Chapter 17.34) and provide additional spaces if nonresidential floor area increases. § 17.72.030.C ; see parking.
If parcel is nonconforming for size, assemble deed/subdivision documents or other evidence listed in § 17.72.050. § 17.72.050

Risks & Ambiguities

Issue	Why it matters	What to verify
Was the use “lawfully established” before the amendment?	Nonconforming rights attach only to lawful prior uses; improper documentation can lead to enforcement.	Verify historical permits, business tax records, utility records, photographs; consult Zoning Administrator. § 17.72.020
Is an addition “substantial” for residential exception?	Hitting 25% floor area or 50% assessed value triggers discretionary review (MUP + Architectural Review) instead of ministerial clearance.	Provide precise floor area and valuation evidence; Director/Board discretion applies. § 17.72.030.A.2
Repair cost threshold after destruction	The 60% test dictates whether restoration is ministerial or requires permit and findings; mis‑estimating costs can delay projects.	Get licensed contractor and appraiser cost opinions; document value used for comparison. § 17.72.040.B
Discontinuance clock (180 days)	A temporary shutdown could inadvertently terminate nonconforming rights.	Confirm start/end dates; request Zoning Administrator extension if the suspension was temporary and justified. § 17.72.040.A
Overlap with specific plans/overlays	Specific plans or overlays (e.g., Broadway Corridor, V‑FO) may supersede general rules.	Confirm whether the parcel lies inside a specific plan or overlay and follow that document’s standards first. § 17.20.020; § 17.06.020

Plain‑English summary

If your building or use in Seaside was legal under prior rules but no longer fits today’s zoning, City code generally lets you keep it — but you usually cannot expand nonresidential or multi‑family nonconformities, and residential expansions require extra review once they reach certain size or cost thresholds. If the use stops for 180 continuous days (or the building is largely destroyed), the right to be nonconforming may be lost. Always document prior legality, and expect Zoning, Architectural Review, and parking rules to apply. § 17.72.010–060

Source References

Title 17, Chapter 17.72 (Nonconforming Uses, Structures, and Parcels): § 17.72.010–060
Title 17, Article 2 — Zones and Table 1‑1 (Zone list and symbols): § 17.06.020 / Table 1‑1
Residential zone standards (Table 2‑3): § 17.12.050 / Table 2‑3
Commercial zones & development standards (Table 2‑4 / Table 2‑6): § 17.14.030 / § 17.14.050
Nonconforming parking rules and link to Chapter 17.34: § 17.72.030.C
Rules on discontinuance & destruction thresholds: § 17.72.040
ADU guidance in Seaside (state ADU context noted in local code excerpts): Seaside ADU provisions and state law interaction (see Seaside ADU rules / California ADU law) — see Seaside ADUs and California ADU law.
For design review and permit procedures referenced above: Chapter 17.62 (Zoning Clearance, Architectural Review, Use Permits) § 17.62.020–030 — see Seaside Design Review.
Development standards, setbacks and site planning: Chapter 17.30 (Standards for All Development) § 17.30.010–100 — see Seaside Development Standards.
Seaside Zoning & Planning overview: Seaside zoning & planning overview.
Seaside Parking chapter: Chapter 17.34 (Parking and Loading). See Seaside Parking.

Sources

Retrieved passages

CBC § 17.62.030 (Section 17.62.030.) High relevance
Seaside Zoning Code (Section 17.40.090) High relevance
CFC § 17.62.070 (Section 17.62.070) High relevance
Seaside Zoning Code (Section 17.72.030.B) High relevance
CFC § 2 (Section 65852.25.) High relevance
Seaside Zoning Code (Section 17.10.020) High relevance
Seaside Zoning Code (Section 17.62.030) High relevance
CBC § 2 (section are) High relevance
Seaside Zoning Code (Chapter 17.34) High relevance
Seaside Zoning Code (Section 17.60.020) Medium relevance
Seaside Zoning Code (section number) Medium relevance
Seaside Zoning Code (Section 17.30.100) Medium relevance
Seaside Zoning Code (Section 17.10.030) Medium relevance
Seaside Zoning Code (Chapter 17.30) Medium relevance
Seaside Zoning Code (Section 17.10.030) Medium relevance
Seaside Zoning Code (Section 17.06.020) Medium relevance
Seaside Zoning Code Medium relevance
Seaside Zoning Code (Article 3) Medium relevance
Seaside Zoning Code (§ 2) Medium relevance
Seaside Zoning Code (Chapter 17.52) Medium relevance
Seaside Zoning Code (Chapter 17.52) Medium relevance
Seaside Zoning Code (chapter is) Medium relevance
Seaside Zoning Code (Article 3) Medium relevance

Cited sections

Title 17, Chapter **17.72** (Nonconforming Uses, Structures, and Parcels): **§ 17.72.010–060** (Title 17)
Title 17, Article 2 — Zones and Table 1‑1 (Zone list and symbols): **§ 17.06.020 / Table 1‑1** (Title 17)
Residential zone standards (Table 2‑3): **§ 17.12.050 / Table 2‑3** (§ 17.12.050)
Commercial zones & development standards (Table 2‑4 / Table 2‑6): **§ 17.14.030 / § 17.14.050** (§ 17.14.030)
Nonconforming parking rules and link to Chapter 17.34: **§ 17.72.030.C** (Chapter 17.34)
Rules on discontinuance & destruction thresholds: **§ 17.72.040** (§ 17.72.040)
ADU guidance in Seaside (state ADU context noted in local code excerpts): Seaside ADU provisions and state law interaction **(see Seaside ADU rules / California ADU law)** — see Seaside ADUs and California ADU law.
For design review and permit procedures referenced above: Chapter **17.62** (Zoning Clearance, Architectural Review, Use Permits) **§ 17.62.020–030** — see Seaside Design Review. (§ 17.62.020)
Development standards, setbacks and site planning: Chapter **17.30** (Standards for All Development) **§ 17.30.010–100** — see Seaside Development Standards. (§ 17.30.010)
Seaside Zoning & Planning overview: Seaside zoning & planning overview.
Seaside Parking chapter: Chapter **17.34** (Parking and Loading). See Seaside Parking.
Seaside_ZoningCode.md

Frequently asked questions

What is a nonconforming use in Seaside?

A nonconforming use is a use or a structure that was lawfully established before the current Zoning Ordinance (Title 17) or an amendment, but which does not conform to present zoning rules. The definitions and general intent are in § 17.72.020–010; continuation is allowed but limited by § 17.72.030 .

Can I expand a nonconforming commercial building in Seaside?

Generally, no — nonconforming nonresidential or multi‑family structures may not be enlarged, except where an addition is fully compliant with current standards and does not increase the nonconformity. See § 17.72.030.B.1.a .

My nonconforming single‑family house sits inside the setback — can I add a room?

Possibly. Interior work is unrestricted; exterior additions that extend beyond the existing footprint may be allowed by Zoning Clearance or Minor Use Permit depending on whether the encroachment matches existing nonconforming portions and on the addition’s height (≤18 ft vs >18 ft). See § 17.72.030.B.1.b(1–3) .

If my nonconforming business stops operating for a while, when is the nonconforming status lost?

If the use is discontinued for 180 continuous days, all rights to legal nonconforming status terminate. The Zoning Administrator may extend the period up to 18 months for documented, justifiable reasons. § 17.72.040.A .

The building was partly destroyed — can I rebuild the nonconforming structure?

Yes, subject to thresholds. If repair/replacement cost is ≤60% of assessed value immediately before damage, you may restore to the same size/use if work starts within 12 months and is diligently pursued. Costs >60% require Minor Use Permit and a public‑benefit finding. § 17.72.040.B; § 17.72.030.B.2 .

Does a nonconforming parcel still allow building permits in Seaside?

A parcel legally created before the zoning change may be considered a legal building site if it meets the criteria in § 17.72.050 (recorded subdivision, recorded deed before change, or limited government acquisition conditions). § 17.72.050 .

If I change a nonconforming use to a conforming one, can I go back?

No. If a nonconforming use is changed to a conforming use, no nonconforming use may be resumed afterwards. See § 17.72.030.A.3. § 17.72.030.A.3 .

Who decides whether a proposed change is allowed (clearance vs MUP vs UP)?

The Zoning Administrator, Planning Commission, or Board of Architectural Review have roles defined in the code; Chapter 17.62 and Table 5‑1 list review authority and procedures. For administrative discretion, the Director’s rules in § 17.02.030 apply. § 17.62.020–070; § 17.02.030 .

Do I need to correct nonconforming zoning conditions to get an ADU?

Seaside must follow state ADU law: the City cannot condition ADU approval on correcting nonconforming zoning conditions except where they create a health/safety threat. See Seaside ADU provisions and state rules; Seaside ADU policy references are in local ADU sections. Not a substitute for direct code review — verify with the City. Seaside ADU policy / state ADU law .

Is architectural (design) review required for nonconforming residential additions?

Yes — residential substantial rehabilitation or additions that meet the thresholds require Board of Architectural Review approval in addition to a Minor Use Permit; lesser additions may be handled by Zoning Clearance depending on the scope. § 17.72.030.A.2; § 17.62.030 .

Ask about any Seaside property

Get a cited, plain-English answer on Seaside zoning, setbacks, FAR, ADUs and permits — for any address.

Start Free Trial