Local zoning · Los Banos

Los Banos — Nonconforming Uses

Q: How long can a nonconforming use remain if it stops operating?

If a nonconforming use is wholly discontinued for one year , Los Banos treats it as abandoned and any new use must conform to current zoning — § 9-3.2201 .

Q: If my building is destroyed, can I rebuild it as it was?

If the building is destroyed by casualty to less than 50% of its value, single‑family or multi‑family dwellings may be rebuilt with a use permit (subject to the building code). If destruction is more than 50% , restoration must comply with current district rules — § 9-3.2203–2204 .

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

Ask a question free See coverage

Last reviewed: July 2, 2026

Overview

This page summarizes what the City of Los Banos zoning ordinance says about nonconforming uses, nonconforming buildings, and nonconforming lots. It is a plain‑English, Los Banos–specific synthesis of the city's zoning rules (what may continue, when legal status is lost, repair / rebuild limits, and special amortization rules), tied to the exact code sections you must check with the Planning Division. Key controlling provisions are in Article 22 (Nonconforming Land, Buildings, Uses, and Signs) and related chapters of Title 9. See the city's zoning overview for context at the Los Banos zoning & planning overview and the municipal Los Banos Zoning pages.

Core rules (what the code actually says)

Continuation / grandfathering: Uses, buildings, or structures that legally existed on or before January 15, 1964 may be continued even where the current regulations would prohibit them, but they may not be extended to occupy a larger area than they occupied on that date — § 9-3.2201 .
Abandonment/discontinuance: If a nonconforming use is discontinued or abandoned, any later use must conform to the current district rules. A use wholly discontinued for one year is conclusively presumed abandoned (loss of legal nonconforming status) — § 9-3.2201 .
Nonconforming land (vacant parcels): A pre‑code vacated use on land without buildings was allowed temporarily by historic dates in the ordinance but is now required to conform to current district provisions — § 9-3.2202 .
Nonconforming buildings — repair/alteration limits:
- Buildings existing on or before January 15, 1964 that are nonconforming in use, design, or arrangement may not be enlarged, extended, reconstructed, or structurally altered unless the change brings them into compliance with current district rules. Maintenance/repairs/replacements that do not exceed 25% of the appraised valuation are allowed — § 9-3.2203 .
- If a nonconforming building is destroyed (fire, casualty) to the extent of more than 50% of its reasonable value, it may be restored only in compliance with the current provisions of the district — § 9-3.2203 .
Reconstruction exception: Single‑family or multi‑family dwellings destroyed to less than 50% of their value may be rebuilt upon securing a use permit, subject to current building code provisions — § 9-3.2204 . (See the City’s ADU rules where relevant at Los Banos ADUs.)
Nonconforming signs: Historic amortization and special rules apply to signs (dates and trigger events are specified); certain sign changes and relocations cause loss of nonconforming status — § 9-3.2205 and the sign article referenced there .
Effect of rezoning: When redistricting (rezoning) makes a land use nonconforming, Article 22 rules apply — § 9-3.2206 .
Airport approach zones (special nonconforming rules): The airport chapter treats nonconforming structures/trees/uses differently; permits are required before replacing or substantially altering a nonconforming structure/tree in airport zones — § 9-1.06 and § 9-1.08 .
Special amortization for adult‑entertainment uses: Adult‑entertainment uses that became nonconforming in 1997 were given a one‑year amortization unless extended by the Planning Commission; abandonment also causes loss of status — § 9-5.104 and § 9-5.105 .

Practical note: repairs that exceed the 25% appraised‑value threshold, enlargements, or rebuilds after >50% destruction trigger a requirement to comply with current district standards or obtain a discretionary permit (use permit/conditional permit) — check Article 23 (permit process) for submittal and hearing rules — § 9-3.2203, § 9-3.2204, and § 9-3.2301 .

District‑by‑district breakdown (where the nonconforming rules are applied and relevant dimensional standards)

The city’s nonconforming rules are cross‑cutting — Article 22 applies across districts. Below are district‑specific rules and the district standards that the nonconforming rules reference or interact with. Where the Los Banos code explicitly lists district dimensional standards those sections are cited; when the code excerpts provided do not list a specific number (for example a front setback value), the entry says "Not found in retrieved materials" so you must verify with the jurisdiction.

Residential — R-1 (Low Density Residential)

Purpose / typical permitted uses: single‑family dwellings, accessory uses typical of low‑density residential areas (see the zoning article for permitted uses) — Not fully reproduced in retrieved snippets; verify with Los Banos Zoning tables. Refer to Los Banos Zoning for the full use chart.
Nonconforming interactions:
- Accessory structures in R-1 require a zoning clearance certificate in many cases — § 9-3.4405(f) .
- Small family day care homes are allowed as a matter of right when properly licensed and may be treated as a legal nonconforming use in some conversions — § 9-3.3702 .
Key dimensional standards: Specific setback/height/lot coverage numbers for R-1 were Not found in retrieved materials. Verify with the Los Banos Development Standards.

Residential — R-2, R-3 (Medium / Multi‑family)

Purpose / typical permitted uses: medium‑density and multi‑family housing; day care standards apply across residential zones — § 9-3.3702–3704 .
Nonconforming interactions:
- Accessory buildings in R-2 also require zoning clearance — § 9-3.4405(f) .
- Conversion of existing nonconforming residential uses (e.g., day‑care, accessory units) must meet the nonconforming continuance and abandonment rules § 9-3.2201 .
Key dimensional standards: Specific R‑2 / R‑3 numeric standards Not found in retrieved materials. Verify with Development Standards.

Mixed Use — M‑X

Typical uses: mixed residential/commercial development; small family day care homes are permitted in residential portions as outlined — § 9-3.3702 .
Nonconforming interactions: same Article 22 rules apply — § 9-3.2201 .
Key dimensional standards: Not found in retrieved materials; verify with Los Banos Zoning.

Planned Industrial — PM and General Industrial — M

Purpose / typical permitted uses: industrial and certain commercial uses. Adult entertainment businesses are allowed only in PM or M zones; proximity/spacing rules and amortization rules apply — § 9-5.103 and § 9-5.104 .
Nonconforming interactions:
- Adult‑entertainment businesses that became nonconforming were amortized with a one‑year termination unless extended; abandonment removes nonconforming status — § 9-5.104 and § 9-5.105 .
Key dimensional standards: spacing for adult‑entertainment uses (e.g., 300 ft / 500 ft) are stated in § 9-5.103 .

Light Industrial — L‑I and General Industrial — I

Purpose / typical permitted uses: light manufacturing, warehousing, industrial services.
Explicit dimensional standards found in code:
- Maximum height: 50′, but no structure over 30′ within 50′ of an R-1 or R-2 boundary — § 9-3.1404 .
- Minimum building site: 5,000 sq ft — § 9-3.1406 .
- Minimum lot width: 100′ — § 9-3.1407 .
- Gross floor area limit when >40′ tall: 3.5× site area — § 9-3.1405 .
- Landscape setbacks: 25′ landscape setback where adjacent to R-1/R-2 — § 9-3.1408(a) .
Nonconforming interactions: Article 22 rules (repairs, abandonment, rebuilding limits) apply — § 9-3.2201–2204 .

Quick reference table — decision‑relevant items

Rule / Item	What it means for applicants	Code Reference
Continuance of historic uses	Legal nonconforming uses built/established on or before Jan 15, 1964 may continue but cannot expand area used	§ 9-3.2201
Abandonment presumption	If nonconforming use is wholly discontinued for one year, status is lost	§ 9-3.2201
Repair threshold for nonconforming buildings	Repairs/replacements that do not exceed 25% of appraised valuation allowed; larger work may require compliance or permits	§ 9-3.2203
Destruction/rebuild test	Destroyed > 50% of value → rebuild only in conformance; destroyed < 50% may be rebuilt with use permit per § 9-3.2204	§ 9-3.2203, § 9-3.2204
Airport zone permits	Replacing/altering nonconforming items in airport zones requires Planning Commission permit; avoid creating new airport hazard	§ 9-1.06, § 9-1.08
Adult‑entertainment amortization	Nonconforming adult uses were amortized to a one‑year termination unless extended; abandonment ends status	§ 9-5.104, § 9-5.105
L‑I dimensional standards	Height 50′ (30′ within 50′ of R‑1/R‑2), lot ≥5,000 sq ft, width ≥100′, 3.5× GFA cap if >40′ tall	§ 9-3.1404–1409

Checklist (what an applicant must satisfy when dealing with a nonconforming building/use)

Confirm the date of establishment or construction that gives nonconforming status (was it on or before Jan 15, 1964?) — § 9-3.2201 .
Determine whether the use has been discontinued/abandoned for one year (loss of status) — § 9-3.2201 .
If making repairs/alterations, calculate appraised valuation and confirm repairs do not exceed 25% (if they do, expect review) — § 9-3.2203 .
If the building was damaged, determine percent loss; if >50%, plan to rebuild to current code or seek applicable permits — § 9-3.2203–2204 .
For projects in airport zones, secure the required Planning Commission permit before replacement/substantial alteration — § 9-1.08 .
For uses like adult entertainment, check whether amortization or Planning Commission extension rules apply — § 9-5.104–105 .
Verify dimensional standards for the district (setbacks, height, lot size) in the relevant district article or the Development Standards page and coordinate with Design Review where required — see Los Banos Development Standards and Los Banos Design Review.
Confirm parking impacts and whether existing parking is adequate or if changes would trigger nonconforming correction — see Los Banos Parking.

Risks & Ambiguities

Issue	Why it matters	What to verify
Exact establishment/construction date	Nonconforming protections hinge on whether the use/structure existed on the trigger date (Jan 15, 1964 for Article 22)	Verify historic permits, building records, or other evidence of existence on or before that date (see § 9-3.2201 )
Scope of “repairs” vs “structural alteration”	Whether work counts toward the 25% valuation limit is often contested	Obtain an appraised valuation and consult Planning on how they interpret “structural alteration” in § 9-3.2203
Whether a use was “abandoned”	One‑year discontinuance is a conclusive presumption of abandonment — risky if intermittent operation occurred	Preserve records of continuous operation; confirm any court orders or formal suspensions that may toll the one‑year rule — § 9-3.2201
Rebuild after casualty	>50% destruction forces compliance with current code; <50% allows rebuild with a use permit for residences — practical difference huge	Get a damage appraisal and confirm permit path: § 9-3.2203–2204
Overlap with state ADU law	State ADU rules limit what local nonconforming requirements may be applied to ADUs	Check Los Banos ADU article and state law; local code references ADU ministerial rules — see Los Banos ADUs and California Building Standards Code (state provisions cited where relevant). If in doubt, Verify with the jurisdiction.
Airport zone special rules	Airport chapter requires permits for many otherwise‑minor actions; failure can be a public‑nuisance violation	Confirm whether the parcel lies in an airport zone and follow § 9-1.08 permit requirements

Plain‑English summary

If your Los Banos property or business was legal before applicable zoning changes, you can usually keep operating it — but you can't expand it, you lose that protection if you stop operating for a year, you can make ordinary maintenance but major repairs or alterations above 25% of value or rebuilding after >50% destruction will generally trigger the requirement to comply with current rules or obtain a discretionary permit. See § 9-3.2201–2204 for the controlling rules and check district standards and special chapters (airport, signs, adult entertainment) that may change the outcome .

Source References

Article 22 (Nonconforming Land, Buildings, Uses, and Signs): § 9-3.2201–9-3.2206 (continuance, abandonment, nonconforming land/buildings, exceptions) .
Airport Zoning nonconforming rules: § 9-1.03, § 9-1.06, § 9-1.08 (definitions, continuation, permits for nonconforming structures/trees) .
Adult‑entertainment amortization and extension: § 9-5.103–9-5.105 (proximity limits; amortization; extension procedure) .
Nonconforming signs and enforcement provisions (sign article references): § 9-3.2205 and related sign article excerpts .
Light Industrial (L‑I) dimensional standards: § 9-3.1404–9-3.1409 (height limits, GFA, lot size, widths, yards) .
Accessory structure zoning clearance requirement (R‑1, R‑2): § 9-3.4405(f) .
Day care / child care rules (how nonconforming day cares may be treated): § 9-3.3702–9-3.3704 .
Application and processing rules (use permits / hearings): § 9-3.2301–9-3.2326 (permit submittal and findings) .

Also consult these internal guidance pages while preparing an application (first mention of topic contains inline link):

Los Banos zoning & planning overview
Los Banos Zoning
Los Banos Development Standards
Los Banos Parking
Los Banos Design Review
Los Banos Overlay Districts
Los Banos ADUs
California Building Standards Code

Information Gaps

Many district numeric standards (front/rear/side setbacks, lot coverage, FAR for residential districts R‑1 / R‑2 / R‑3 / M‑X) were Not found in retrieved materials above; verify the precise residential setback and lot‑coverage figures with the City’s Development Standards or the full Los Banos Municipal Code (zoning tables) before design or permit submittal.
The uploaded extracts do not include a consolidated use table showing "permitted/conditional/prohibited" uses by district; consult the main zoning use tables in the full code on the City site (Los Banos Zoning) or contact the Planning Division.
Specific process fees and a complete list of submittal requirements are not included in the snippets; those are set by resolution and should be confirmed with Planning (see § 9-3.2301 for application procedure) .

Sources

Retrieved passages

CBC § 6.01 (chapter for) High relevance
Los Banos Zoning Code (§ 9-5.103.) High relevance
Los Banos Zoning Code (§ 3) High relevance
Los Banos Zoning Code (§ 2) High relevance
CBC § 6.03 (chapter for) High relevance
Los Banos Zoning Code (§ 2) Medium relevance
Los Banos Zoning Code (§ 1) Medium relevance
Los Banos Zoning Code (chapter with) Medium relevance
CFC § 22 (§ 22) Medium relevance
Los Banos Zoning Code (§ 5.25) High relevance

Cited sections

Official Los Banos code library

Frequently asked questions

What is a nonconforming use in Los Banos?

A use, building, or structure that lawfully existed before a zoning regulation took effect but does not comply with the current district rules is a nonconforming use; the governing code allows continuance for uses existing on or before January 15, 1964, with limits on expansion — § 9-3.2201 .

How long can a nonconforming use remain if it stops operating?

If a nonconforming use is wholly discontinued for one year, Los Banos treats it as abandoned and any new use must conform to current zoning — § 9-3.2201 .

Can I repair a nonconforming building in Los Banos?

Yes — ordinary maintenance and repairs are allowed, but structural repairs/alterations that enlarge or materially change the building are restricted; repairs/replacements that do not exceed 25% of the appraised valuation are allowed without forcing compliance — § 9-3.2203 .

If my building is destroyed, can I rebuild it as it was?

If the building is destroyed by casualty to less than 50% of its value, single‑family or multi‑family dwellings may be rebuilt with a use permit (subject to the building code). If destruction is more than 50%, restoration must comply with current district rules — § 9-3.2203–2204 .

Does the airport zone affect nonconforming rules?

Yes. The airport chapter contains separate nonconforming rules: nonconforming structures or trees in airport approach zones may require Planning Commission permits before replacement or substantial alteration and cannot be allowed to become greater airport hazards — § 9-1.06, § 9-1.08 .

What happens to a nonconforming adult‑entertainment business in Los Banos?

When the adult‑entertainment spacing rules were adopted, existing uses were declared nonconforming and amortized (terminated) after one year unless the Planning Commission approved an extension; abandonment also causes loss of status — § 9-5.104–105 .

Do rezones (redistricting) create nonconforming uses?

Yes. When rezoning makes an existing use or structure inconsistent, Article 22 rules apply to that newly nonconforming condition (see § 9-3.2206) — § 9-3.2206 .

Can a nonconforming accessory structure in R‑1 or R‑2 stay in place?

Existing accessory structures may be grandfathered, but many accessory buildings in R-1 and R-2 require a zoning clearance certificate to verify compliance; check § 9-3.4405(f) and consult the Community & Economic Development Director — § 9-3.4405(f) .

Will adding an ADU force me to fix nonconforming zoning issues?

Los Banos’ ADU rules reference state law limitations. The city’s ADU article notes that local agencies cannot condition ADU approval on correcting nonconforming zoning conditions except where there's a health/safety threat; check the Los Banos ADU provisions and state ADU law for specifics and verify with the City — Los Banos ADU article and state building standards (see Los Banos ADUs and California Building Standards Code) .

Where do I start to get a permit or confirm nonconforming status?

Begin with the Planning Division: submit a complete application per § 9-3.2301 and request a zoning determination and, if needed, a use permit or variance. Confirm completeness timelines and hearing procedures in Article 23 — § 9-3.2301–2303 .

Ask about any Los Banos property

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

Start Free Trial