Local zoning · San Benito County

San Benito County — Nonconforming Uses

Q: Will an addition to a nonconforming commercial site require parking or landscaping upgrades?

Likely, depending on the scale of expansion. § 25.01.012(G) sets thresholds that trigger added parking and landscaping with larger floor‑area increases; where full compliance isn’t feasible, a “good faith” effort counts. See § 25.01.012(G) .

Q: Who decides whether my situation is legally nonconforming?

The Planning Director makes the initial decision, with appeals to the Planning Commission and Board of Supervisors (Table 25.01‑A). The owner/tenant bears the burden of proving nonconforming status. See § 25.01.006(E) Table 25.01‑A and § 25.01.012(E)(5), (F)(4) .

Nonconforming Uses under the San Benito County local zoning and planning code, with the controlling citations.

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Last reviewed: July 6, 2026

Overview

This page explains how nonconforming uses, structures, and sites are treated in unincorporated areas of San Benito County under the County’s Zoning Ordinance, Title 25. The rules live in § 25.01.012 and apply countywide across base zoning districts and any applicable combining/overlay zones . You’ll find what counts as “nonconforming,” what you can keep, when rights end, what can be repaired or rebuilt, and when site upgrades like parking and landscaping are triggered.

Plain-English core rule: If a use or structure was lawful when established but doesn’t meet today’s zoning, it can generally continue in place but cannot expand, and it loses protection if abandoned for one continuous year, unless an extension is granted. See § 25.01.012(D)–(E) .

What the ordinance covers

Definition and status: A lawfully established use, structure, or site that no longer conforms due to code changes is nonconforming; this includes nonconforming setbacks, height, floor area, density, or the absence of a required permit. See § 25.01.012(A)–(C) .
Continuance and termination: Nonconforming uses/structures may continue if not altered or enlarged (unless allowed elsewhere in the section). Rights run with the land but do not protect public nuisances. Rights end if abandoned or vacated; see abandonment rules below. See § 25.01.012(D)(1)–(2) .
Nonconforming uses: No expansion of intensity or footprint. If the only issue is “no use permit,” you can cure it by obtaining the correct permit under Chapter 25.02. Abandonment for one continuous year terminates the right to resume; the Planning Director may add one year if warranted by economic conditions (max two years). Burden of proof is on the owner/tenant. See § 25.01.012(E) and § 25.01.012(E)(4)(b), (5) .
Nonconforming structures: Routine maintenance and interior alterations are allowed so long as you don’t enlarge the building, change the footprint, or increase height/roof pitch. Additions or enlargements are allowed only if the added area complies with all current standards and does not increase the discrepancy, with special guardrails for residential setbacks. See § 25.01.012(F)(1)–(2) .
Residential setbacks: In residential zones, an existing nonconforming setback may be maintained and extended without counting as a greater discrepancy, if no new encroachment is created, height within the setback isn’t increased, and any second-story addition meets current setbacks. See § 25.01.012(F)(2)(a) .
Damage and reconstruction: If disaster damage is ≤50% of appraised value (as determined by the Building Official), in-kind replacement is allowed by right. If >50%, the site must meet current code except that nonconforming multifamily may be rebuilt up to prior size/unit count (with zoning clearance/Director approval) unless found detrimental; building permits must be pulled within 2 years and work finished within 1 year of permit issuance. See § 25.01.012(F)(3) and § 25.01.012(F)(3)(b)1–2 .
Nonconforming sites (parking/landscaping): When expanding or adding buildings on partially developed sites, phased upgrades to parking and landscaping are required according to thresholds; a “good faith” standard applies if full compliance is impossible due to parcel limits. See § 25.01.012(G) .
Administration and appeals: The Planning Director is the decision-maker for nonconforming determinations, with appeals to the Planning Commission and then the Board of Supervisors (Table 25.01‑A). See § 25.01.006(E) Table 25.01‑A and “Nonconforming uses, structures and sites” row in § 25.01.012 .

Interactions with overlays and other chapters

Airport overlays: Within the Frazier Lake Airpark (FLA) Combining Zone, owners of any existing nonconforming structure or tree must allow aircraft warning markers/lights if required by the Planning Director. See § 25.04.005(F) and related overlay provisions . For other overlays, see Overlay Districts.
Signs: Limited continued use/maintenance of nonconforming historic signs is recognized in the signage chapter; coordinate with Signage. See § 25.07.016(A)(7) .
Design review and development standards: Any proposed additions or site work may trigger Design Review and compliance with current Development Standards. See § 25.02.001 and Chapter 25.07 .

Quick decision table: What you can do with a nonconformity

Scenario	What the County allows	Key conditions	Code Reference
Continue an existing nonconforming use	Allowed	No enlargement, addition, substitution, or increased intensity unless otherwise provided	§ 25.01.012(D)(1), (E)
Cure a use that lacks a required permit	Allowed	Obtain appropriate administrative/conditional use permit under Chapter 25.02	§ 25.01.012(E)(2)
Abandonment of a nonconforming use	Right to resume ends after 1 year	Director may grant one additional year for economic conditions (max 2 years total)	§ 25.01.012(E)(4)
Maintenance/repairs to a nonconforming structure	Allowed	No enlargement, no footprint change, no height/roof pitch increase	§ 25.01.012(F)(2)
Extend a nonconforming residential setback	Allowed	No new encroachment; don’t increase height in setback; second story must meet current setbacks	§ 25.01.012(F)(2)(a)
Add/enlarge a nonconforming structure	Allowed	Added area must fully comply; cannot increase any discrepancy	§ 25.01.012(F)(1)
Rebuild after disaster (≤50% value)	Allowed by right	In-kind replacement, same size/configuration	§ 25.01.012(F)(3)(a)
Rebuild after disaster (>50% value)	Must meet current code, with exception for MF residential	MF may rebuild up to prior size/unit count with approvals; permits within 2 years; complete within 1 year	§ 25.01.012(F)(3)(b)1–2
Expand building on a nonconforming site	Triggers site upgrades	Parking/landscaping upgrades scale with percent floor area increase; “good faith” if space-limited	§ 25.01.012(G)
Who proves nonconforming status?	Property owner/tenant	Provide evidence as required by Director	§ 25.01.012(E)(5), (F)(4)

District-by-district context (how base zones affect nonconforming situations)

These brief summaries of where and how base district standards apply can help you gauge whether an addition or change risks “increasing a discrepancy” or triggering site upgrades. All references apply only in the unincorporated areas; for the zoning map and permitted uses, see Zoning and Land Use.

Residential districts — RR, R-1, RM

Purpose: Not found in retrieved materials.
Typical permitted uses: Single-family dwellings (P) in RR and R‑1; RM allows multifamily, duplex/half‑plex, and mobile home parks by permit type shown in Table 25.03‑D. ADUs are permitted in all three (see local ADU chapter). See § 25.03 Table 25.03‑D .
Key dimensional standards:
- RR: max density 2 du/ac; front 25 ft; sides 15% of width (8–32 ft); rear 20% depth (≥20–≤35 ft); height 35 ft.
- R‑1: up to 20 du/ac where public water/sewer exist; front 20 ft; sides 10% lot width (≥6–≤20 ft); rear 20% depth (≥20–≤35 ft); height 30 ft; 40% lot coverage; 0.8 FAR.
- RM: 8–20 du/ac where public water/sewer exist; front 20 ft (15 ft on small lots with Director approval); sides 10% lot width (≥6–≤20 ft); rear 20% depth (≥20–≤30 ft); height 35 ft; 60% lot coverage; 0.8 FAR. See § 25.03 Table 25.03‑E .
Nonconforming angle to watch: In residential zones, you can maintain/extend a nonconforming setback if you meet the three conditions noted above; second stories must meet today’s setbacks. See § 25.01.012(F)(2)(a) .

Agricultural and Rural districts — AR, AP, R, RT

Purpose: Not found in retrieved materials.
Typical permitted uses: Commercial and hobby agriculture, wineries (often A or P), single-family dwellings (P), plus a range of ag-supporting uses per Table 25.03‑B/C. See § 25.03 (Agricultural uses tables) and Table 25.03‑C .
Key dimensional standards (Table 25.03‑C):
- AR: 1 du/40 ac; min lot 40 ac; front 30 ft, side 32 ft, rear 35 ft; height 35 ft.
- AP: 1 du/5 ac; min lot 5 ac; front 25 ft, side 32 ft, rear 35 ft; height 35 ft.
- R: 1 du/5 ac; same setbacks as AP; height 35 ft.
- RT: 1 du/2.5 ac; same setbacks as AP; height 35 ft. See § 25.03 Table 25.03‑C .
Nonconforming angle to watch: Large-lot setbacks and animal/ag accessory structure spacing standards can make “no increase in discrepancy” a practical design constraint for additions. See general rules in § 25.01.012(F)(1) .

Industrial districts — BP, M-1, M-2

Purpose/intents: BP supports high-quality industrial in a park setting; M‑1 accommodates light industrial near transportation; M‑2 accommodates heavier industrial activities. See § 25.03.007(B)–(D) .
Typical permitted uses: Caretaker units (P), warehouses (A/P by district), light/heavy industrial (A/P as listed in Table 25.03‑H). See § 25.03.007(E) Table 25.03‑H .
Key dimensional standards (Table 25.03‑I): FAR 0.8, height 40 ft, lot coverage 50%, front/street side setbacks 25 ft; interior side/rear 10 ft (more when adjacent to residential). See § 25.03.007(F) Table 25.03‑I .
Nonconforming angle to watch: Site expansions often trigger on‑site circulation, screening, parking, and architectural upgrades under industrial standards and § 25.01.012(G) .

Public/Quasi-Public and Resource Recovery Park — Public/Quasi-Public, RRP

Purpose: Establishes use lists and development standards for public/quasi‑public and resource recovery park sites. See § 25.03.008 and Table 25.03‑K .
Typical permitted uses: Public facilities, transit stops, cemeteries (C), museums/libraries (P), and RRP‑support uses as listed. See Table 25.03‑K .
Key dimensional standards: RRP includes minimum lot metrics; FAR up to 1.0 and specified setbacks; Public/Quasi‑Public largely subject to design review. See § 25.03.008(E) Table 25.03‑K .
Nonconforming angle to watch: Public-facing expansions can quickly trigger Design Review and phased site compliance under § 25.01.012(G) .

Special notes and cross-issues

Public nuisance carve‑out: Nonconforming protection does not apply to uses/structures determined by the Planning Commission or Board to be a public nuisance threatening health/safety/welfare. See § 25.01.012(D)(1) .
Overlays trump base: If an overlay like the FLA Combining Zone imposes more restrictive rules (e.g., avigation easements, density caps by airport safety zone), the more restrictive standard prevails. See § 25.04.005(D) and table notes .
ADUs and nonconforming conditions: State ADU law limits a county’s ability to deny an ADU solely due to pre‑existing nonconforming zoning conditions unless they create a health/safety threat affected by the ADU work. See HCD’s guidance (Nonconforming Zoning Conditions) and Gov. Code references summarized in the state handbook . For policy context, see California ADU law.
Building/code compliance: Structural value appraisals for disaster rebuilds are by the Building Official, and any construction must follow the California Building Standards Code. The zoning rules here do not replace building, fire, or environmental health requirements.

Checklist

Establish legal nonconforming status with credible evidence (e.g., permits, utility records, business license history). The burden is on the owner/tenant per § 25.01.012(E)(5), (F)(4) .
Confirm no “public nuisance” findings apply that would void protections, per § 25.01.012(D)(1) .
For any change: show no enlargement, no footprint growth, and no height/roof pitch increase unless expressly allowed in § 25.01.012(F) .
If residential setback is nonconforming and you plan an addition: meet the three conditions in § 25.01.012(F)(2)(a) .
If use lacks a required permit: pursue the correct administrative/conditional use permit under Chapter 25.02 per § 25.01.012(E)(2) .
Track operations carefully: a 12‑month cessation is abandonment; request a Director extension early if needed (max 2 years). See § 25.01.012(E)(4) .
After damage: secure a professional appraisal via the Building Official process; if >50% value loss, plan for current-code compliance or use MF exception; pull permits within 2 years and complete within 1 year. See § 25.01.012(F)(3) .
For building expansions on partially developed sites: scope parking and landscaping upgrades per the thresholds in § 25.01.012(G) .
Check overlays and special areas (e.g., FLA Combining Zone) and pursue any required easements/approvals. See § 25.04.005 .
Determine if Design Review applies to your addition/site work and assemble objective plans accordingly.

Risks & Ambiguities

Issue	Why it matters	What to verify
Proving legal status	Without proof, the County may treat the situation as illegal, not nonconforming	Gather historic permits, inspection cards, licenses, utility records; Director decides per § 25.01.012(E)(5), (F)(4)
Where “maintenance” ends and “expansion” begins	Crossing into enlargement or new encroachment can invalidate protection	Confirm scope aligns with § 25.01.012(F)(1)–(2); in residential, follow the three‑part setback test
Abandonment triggers	A closed business can quietly run out the clock	Track the 12‑month period and any Director extension under § 25.01.012(E)(4)(b)
Damage threshold appraisal	The 50% line controls whether in‑kind rebuild is allowed	Appraised by a County‑selected professional; Building Official oversees; see § 25.01.012(F)(3)
Phased site upgrades	Expansions can unexpectedly trigger parking/landscaping work	Apply § 25.01.012(G) thresholds; document “good faith” if full compliance isn’t feasible
Overlay conflicts	Overlay rules can be stricter than base zoning	Check Overlay Districts; e.g., FLA markers/lights duty in § 25.04.005
Historic signs	Some nonconforming signs may continue	Coordinate early with Signage, § 25.07.016(A)(7)
ADU on a nonconforming lot	State law narrows denial grounds related to nonconformities	See state guidance summarized in HCD’s handbook on nonconforming zoning conditions ; Verify with the jurisdiction

Plain-English Summary

If your property in unincorporated San Benito County has a use or structure that met the rules when it was built but doesn’t meet today’s zoning, you can usually keep it as-is. You can maintain it, repair it, and sometimes even add to it—but only if the new work fully complies and doesn’t make any old discrepancy worse. Stop using it for a year and your right to restart generally ends; if disaster strikes, there are clear rules for when you can rebuild the same thing and when today’s standards apply.

Source References

San Benito County Zoning Ordinance, Title 25 — § 25.01.001–.006 (general/admin, review authorities); see Table 25.01‑A for nonconforming decision authority
San Benito County Zoning Ordinance — § 25.01.012 Nonconforming Uses, Structures, and Sites (purpose, definitions, continuation, abandonment, structures, sites)
Residential districts (uses and standards): § 25.03 Tables 25.03‑D and 25.03‑E
Agricultural/rural districts: § 25.03 Table 25.03‑C and related use tables
Industrial districts: § 25.03.007(B)–(G), Tables 25.03‑H, 25.03‑I
Public/Quasi‑Public & RRP: § 25.03.008(E) Table 25.03‑K
Frazier Lake Airpark Combining Zone (overlay): § 25.04.005
Signs (historic/nonconforming continuity): § 25.07.016(A)(7)
State ADU guidance on nonconforming zoning conditions: California HCD, 2025 ADU Handbook (summary citations to Gov. Code)

Sources

Retrieved passages

San Benito County Zoning Code (§ 3) High relevance
San Benito County Zoning Code (§ 25.01.008.) High relevance
San Benito County Zoning Code (title or) High relevance
San Benito County Zoning Code High relevance
San Benito County Zoning Code High relevance
San Benito County Zoning Code (chapter are) High relevance
San Benito County Zoning Code (§ 3) Medium relevance
San Benito County Zoning Code (§ 66314) Medium relevance
San Benito County Zoning Code (§ 3) Medium relevance
CBC § 66314 (§ 66314) Medium relevance
San Benito County Zoning Code (§ 66333) Medium relevance
CBC § 66321 (§ 66321) Medium relevance
San Benito County Zoning Code (section and) Medium relevance
San Benito County Zoning Code (§ 3) Medium relevance
San Benito County Zoning Code (§ 3) Medium relevance
San Benito County Zoning Code (§ 66317) Medium relevance
San Benito County Zoning Code (Chapter 25.08) Medium relevance
CBC § 25.08.029 (Chapter 25.02) Medium relevance
San Benito County Zoning Code (§ 3) Medium relevance
CBC § 3 (§ 3) Medium relevance
CBC § 3 (§ 3) Medium relevance
San Benito County Zoning Code (Title 7) Medium relevance
CBC § 25.07.011 (§ 25.07.011) Medium relevance

Cited sections

Official San Benito County code library

Frequently asked questions

Can I expand a nonconforming business use in unincorporated San Benito County?

No. Nonconforming uses may not expand in intensity or physical footprint. If you are nonconforming only because you lack a required permit, you can apply for the proper administrative or conditional use permit under Chapter 25.02 to make the use conforming. See § 25.01.012(E)(1)–(2) .

If I close my nonconforming use for a while, when do I lose my rights?

If a nonconforming use stops operating for one continuous calendar year, it’s deemed abandoned and cannot be resumed except as a conforming use. The Planning Director may grant one extra year for economic conditions, for a maximum of two years total. See § 25.01.012(E)(4)(a)–(b) .

Can I add onto my house if it encroaches into today’s setback?

Often yes, with limits. In residential zones, you may maintain and extend a nonconforming setback if you don’t create any new encroachment, don’t increase the height of the portion within the setback, and any second story addition meets current setbacks. See § 25.01.012(F)(2)(a) .

What happens if a nonconforming building is damaged by fire or a natural disaster?

If repair costs are ≤50% of the appraised value (as determined through the Building Official’s process), in‑kind replacement is allowed by right. If costs exceed 50%, today’s standards apply, except multifamily may be rebuilt up to prior size/unit count with approvals. Pull permits within two years and finish within one year of issuance. See § 25.01.012(F)(3) and § 25.01.012(F)(3)(b)1–2 .

Will an addition to a nonconforming commercial site require parking or landscaping upgrades?

Likely, depending on the scale of expansion. § 25.01.012(G) sets thresholds that trigger added parking and landscaping with larger floor‑area increases; where full compliance isn’t feasible, a “good faith” effort counts. See § 25.01.012(G) .

Who decides whether my situation is legally nonconforming?

The Planning Director makes the initial decision, with appeals to the Planning Commission and Board of Supervisors (Table 25.01‑A). The owner/tenant bears the burden of proving nonconforming status. See § 25.01.006(E) Table 25.01‑A and § 25.01.012(E)(5), (F)(4) .

Do I need design review for changes to a nonconforming structure?

Maybe. If your district or overlay requires it (e.g., residential design standards or hillside/ridgeline areas), additions or new work can trigger Design Review. Nonconforming status does not waive such requirements. See § 25.02.001 and related chapters .

Can the County deny an ADU on my property because my main house doesn’t meet today’s setbacks?

State ADU law limits denials based solely on pre‑existing nonconforming zoning conditions unless there’s a health/safety threat affected by the ADU work. See HCD’s 2025 ADU Handbook summary of Gov. Code provisions on nonconforming conditions . Verify with the jurisdiction. ---

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