Local zoning · Carmel-by-the-Sea

Carmel-by-the-Sea — Nonconforming Uses

Nonconforming Uses under the Carmel-by-the-Sea local zoning and planning code, with the controlling citations.

Last reviewed: July 6, 2026

Overview

Carmel-by-the-Sea regulates legal nonconformities to preserve village character while allowing many older buildings and uses to continue under tight limits. The rules live in Title 17 Zoning and are enforced alongside Design Review, Development Standards, and district-specific regulations in the city’s Zoning and Land Use framework. The city’s nonconforming chapter explains what may continue, what may be repaired, and when an old use or structure must be brought into conformance or discontinued (§ 17.36.010–.060 ).

Plain-English: A nonconforming use is a once-lawful use that no longer fits today’s zoning; it can continue but cannot expand, and repairs to a building containing it are capped at 10% of building value in any 12 months (§ 17.68.090; § 17.36.050(A) ).

What the code means by “nonconforming”

Definition. A nonconforming use is a use of land or a structure that was lawfully established and maintained but no longer conforms to current district use regulations due to a code change or annexation (§ 17.68.090 ).
Purpose. The city aims to regulate and, when feasible without harming village character, eliminate nonconformities (§ 17.36.010 ).
Continuation. Lawfully established nonconforming structures and uses may continue and be maintained as provided in Chapter 17.36 (§ 17.36.020(A)–(B) ).
Missing permits. If the only issue is a missing administrative or use permit, the city can legalize the use/structure by issuing the appropriate permit (§ 17.36.020(C) ).

What you can and cannot do with a nonconforming use or structure

Do not enlarge the building or its envelope containing a nonconforming use. Repairs, remodeling, alterations, or maintenance are limited to 10% of the building’s value (or of the portion containing the use) within any 12 months; valuation is determined by the Building Official (§ 17.36.050(A) ).
Do not extend a nonconforming use into unoccupied parts of the same building (§ 17.36.050(B) ).
Change of ownership: if a commercial use is nonconforming only because it fails to meet operational standards (e.g., hours, merchandise type), any replacement use must meet those operational standards at the time of ownership change. If the nonconformity is physical/structural (e.g., parking count), a change of ownership does not force correction (§ 17.36.050(C) ).
New buildings on a site with a nonconforming use must themselves be occupied only by a conforming use (§ 17.36.050(D) ).
Exemption: the § 17.36.050 limits do not apply to buildings with a lawful nonconforming dwelling unit in any commercial or R‑4 district (§ 17.36.050(E) ).

Damage, demolition, and substantial alteration

Routine repair/alteration is allowed so long as it does not increase the nonconformity; historic resources follow Chapter 17.32 in addition (§ 17.36.030(A)–(B) and § 17.32.100(D) ).
If a nonconforming building is damaged or destroyed more than 75%, it may be reestablished only if the Planning Commission issues a use permit based on special reconstruction findings (§ 17.36.040(B); § 17.64.130 ).
Demolition of any nonconforming building requires all new work to meet current code standards (§ 17.36.040(D) ).
“Substantial alteration” that removes a nonconforming building or structural element triggers correction of that element to conforming status; the removed nonconformity cannot be rebuilt elsewhere on the site (§ 17.36.040(E) ).
Compliance with the City’s building regulations can incidentally alter an existing building; those changes require design review and cannot increase nonconformities (§ 17.36.040(C) ).

Abandonment and replacement

Once any part of a property occupied by a nonconforming use is changed to a conforming use, it may not revert to a nonconforming use (§ 17.36.060 ).
Special carve‑out: In the CC, SC, and RC districts, transient rental units that were permitted before Ordinance 2019‑03 are classified as legal nonconforming; their permits run in perpetuity and the six‑month abandonment provision in Chapter 17.36 does not apply (§ 17.14.040(W), cross‑referencing § 17.68.090 and Chapter 17.36 ).

Interplay with historic resources

You generally may not enlarge or increase a nonconforming feature; however, historic resources have limited exceptions. Alterations that would otherwise be prohibited can proceed where allowed under § 17.32.100(D) to meet the Secretary’s Standards (§ 17.36.030(B); § 17.32.100(D) ). See Historic Preservation.

Nonconforming lots and lot line adjustments

Subdivisions or lot line adjustments may not create or increase zoning nonconformities; only legal lots may be adjusted (§ 17.44.030(A)–(B) ).
The Planning Commission can require curing existing nonconformities when reasonable for public health, safety, and welfare (§ 17.44.030(J) ).
If adjusting lines requires moving one nonconforming wall, other nonconforming sides are not forced to conform unless the building is moved, demolished, or rebuilt (§ 17.44.030(F) ).

How these rules show up in Carmel’s districts

Below are Carmel-by-the-Sea’s districts where nonconforming rules most often arise. Use these notes together with the district chapters and Development Standards.

R-1 (Single‑Family Residential)

Purpose: Maintain modest, forest‑setting homes and preserve neighborhood character (§ 17.10.010(A)–(D) ).
Typical permitted uses: Single‑family dwellings and related accessory uses; transient lodging is prohibited in R‑1 (§ 17.08.060; see also § 17.08.050; § 17.08.050(H) context for single‑family dwelling regulations ).
Key dimensional standards: Not found in retrieved materials.
Where it applies: Verify with the jurisdiction.
Nonconforming highlights: “R‑1 motels” may persist only with strict findings and are limited when remodeled/rebuilt (e.g., site coverage ≤ 35%, no floor‑area increase, conforming setbacks/height) (§ 17.64.140; § 17.64.150 ).

R-4 (Multifamily Residential)

Purpose/uses: Not found in retrieved materials.
Key dimensional standards: Not found in retrieved materials.
Where it applies: Verify with the jurisdiction.
Nonconforming highlights: Buildings with a lawful nonconforming dwelling unit in R‑4 are exempt from the § 17.36.050 limits on repairs and expansion that otherwise apply to nonconforming uses (§ 17.36.050(E) ).

CC (Central Commercial)

Purpose/uses: Central retail and services; certain uses must operate indoors (§ 17.14.070(A)–(B) ).
Key dimensional/operational standards: Apartments in CC do not require off‑street parking (§ 17.14.060(B); see Parking for general rules ).
Where it applies: District blocks and lots are mapped in Table 17.14‑A (§ 17.14.020 ).
Nonconforming highlights: Lawful pre‑2019 transient rentals are legal nonconforming and are not subject to the six‑month abandonment rule in Chapter 17.36 (§ 17.14.040(W) cross‑ref. § 17.68.090; Ch. 17.36 ).

SC (Service Commercial)

Purpose/uses: Commercial services with indoor operations; some use‑specific limits apply (§ 17.14.070(B) ).
Key dimensional standards: Not found in retrieved materials.
Where it applies: District blocks and lots are mapped in Table 17.14‑A (§ 17.14.020 ).
Nonconforming highlights: Same transient‑rental nonconforming carve‑out as CC (§ 17.14.040(W) ).

RC (Residential and Commercial)

Purpose/uses: Mixed allowances; certain outdoor storage is permitted by exception; other commercial limitations apply (§ 17.14.070(A)–(B) and use‑specific standards ).
Key dimensional standards: Not found in retrieved materials.
Where it applies: District blocks and lots are mapped in Table 17.14‑A (§ 17.14.020 ).
Nonconforming highlights: Same transient‑rental nonconforming carve‑out as CC (§ 17.14.040(W) ).

Overlay example: R‑1‑PO (Park Overlay)

Purpose/effect: Custom setbacks and height considerations next to parklands, with special findings for large/irregular sites and height above 18 ft. (§ 17.64.160–.170; cross‑ref. § 17.20.090 ).
Where it applies: Park-related overlays include mapped areas like Mission Trail Nature Preserve and Forest Theater Park (figures and block/lot lists in Division III) (§ 17.20.100; overlay figures and tables ).
Nonconforming tie‑in: When work triggers alteration rules in Chapter 17.36, Park Overlay findings may also apply; coordinate early through Design Review (§ 17.20.100; § 17.36.030–.040 ).

Nonconforming rules at a glance

Topic	Key rule in Carmel-by-the-Sea	Code Reference
Definition	Lawful use no longer conforming to district use rules may continue with limits	§ 17.68.090
Repairs to building with a nonconforming use	Cap of 10% of building (or affected portion) value per 12 months	§ 17.36.050(A)
No expansion	No enlargement of envelope or extension into new building areas	§ 17.36.050(A)–(B)
Ownership changes (commercial uses)	Operational nonconformities must be cured by replacement use; physical nonconformities need not be cured on sale	§ 17.36.050(C)
New buildings on sites with nonconforming uses	New buildings must be occupied by conforming uses	§ 17.36.050(D)
Dwelling-unit carve‑out	§ 17.36.050 limits don’t apply to lawful nonconforming dwellings in commercial or R‑4	§ 17.36.050(E)
Damage > 75%	Reestablishment allowed only with a Planning Commission use permit and special findings	§ 17.36.040(B); § 17.64.130
Demolition	Any replacement must fully conform	§ 17.36.040(D)
Substantial alteration (removing nonconforming elements)	That element must be corrected to conform; it cannot be rebuilt nonconforming elsewhere	§ 17.36.040(E)
Historic resource exception	Certain otherwise‑prohibited changes may be allowed if consistent with historic standards	§ 17.36.030(B); § 17.32.100(D)
Transient rentals in CC/SC/RC	Pre‑2019 units are legal nonconforming; six‑month abandonment rule doesn’t apply	§ 17.14.040(W) (x‑ref. § 17.68.090; Ch. 17.36)
Lot line adjustments	Cannot create/increase nonconformity; cures may be required	§ 17.44.030(A), (J), (F)

ADUs and nonconforming conditions (state overlay)

State ADU law limits a city’s ability to deny an ADU due to existing nonconforming zoning conditions unless they present a health/safety threat and are affected by the ADU construction (Gov. Code §§ 66322(b), 66323(c); HCD 2025 ADU Handbook) . See Carmel-by-the-Sea ADUs and California ADU law.

Process touchpoints you’ll likely hit

Most exterior work on nonconforming structures requires Design Review findings; conditions must be consistent with the code and adopted guidelines (§ 17.58.050–.060 ).
District‑specific prerequisites (e.g., indoor‑operation rules in CC/SC/RC; mapped district boundaries) still apply (§ 17.14.070; § 17.14.020 ).
If parking is implicated, coordinate early with Parking requirements (e.g., CC apartments have no off‑street parking requirement in § 17.14.060(B) ).

Checklist

Identify your base district and any overlays on the parcel (Zoning; Overlay Districts). Verify mapped blocks/lots for CC/SC/RC (§ 17.14.020 ).
Confirm the use/structure was lawfully established (§ 17.36.020(A)–(C) ).
Determine whether the nonconformity is operational or physical/structural (§ 17.36.050(C) ).
If proposing repairs to a building with a nonconforming use, document the building’s value and 12‑month total to stay within the 10% cap (§ 17.36.050(A) ).
If damage exceeds 75%, prepare a use permit with findings for reconstruction (§ 17.36.040(B); § 17.64.130 ).
For historic resources, confirm whether relief under § 17.32.100(D) applies (§ 17.36.030(B) ).
If in R‑1, check whether special “R‑1 motel” provisions are relevant (§ 17.64.140–.150 ); if in CC/SC/RC, check if an existing transient rental qualifies as legal nonconforming (§ 17.14.040(W) ).
If adjusting lot lines, show no increase in nonconformity and address any required cures (§ 17.44.030(A), (J) ).
Submit to Design Review as required (§ 17.58.050–.060 ).

Risks & Ambiguities

Issue	Why it matters	What to verify
“10% of value” cap	Exceeding the cap can force conformance or denial of work	How the Building Official will value work/building (§ 17.36.050(A) )
What counts as “increase” to a nonconformity	Small design moves can unintentionally expand a nonconforming feature	Scope with the Planner before submittal; use renderings to show no increase (§ 17.36.030(A)–(B) )
75% destruction threshold	Crossing the threshold triggers a Commission use permit and strict findings	Cost/quantity method the City will use; required evidence for § 17.64.130 findings (§ 17.36.040(B) )
Operational vs structural nonconformities	Ownership change can obligate operational compliance, not structural	Whether your constraints are “operational” or “physical” (§ 17.36.050(C) )
Historic resource exceptions	Some expansions otherwise barred may be allowed to preserve integrity	Whether § 17.32.100(D) applies; consult Historic Preservation (§ 17.36.030(B) )
Transient rental status	Legal nonconforming transient rentals enjoy special protections in CC/SC/RC	Documentary proof of permit pre‑2019‑03; abandonment inapplicability (§ 17.14.040(W) )
Lot line adjustments	Boundary changes can accidentally create nonconformities	Conformance of all newly created sites; any required cures (§ 17.44.030(A), (E), (J) )

Plain-English Summary

If your Carmel property has an old use or building that doesn’t meet today’s zoning, you can usually keep using it—but you can’t expand it, and building repairs tied to a nonconforming use are capped at 10% of building value each year. Major damage, demolition, or removing nonconforming elements tends to trigger full compliance, unless you qualify for specific carve‑outs (like historic resources, R‑1 motels, or older transient rentals in CC/SC/RC) and you meet all review findings.

Source References

§ 17.36.010–.060 Nonconforming Uses and Buildings (purpose, continuation, alterations, destruction, nonconforming uses, abandonment)
§ 17.64.130 Findings for reconstruction of a nonconforming structure >75% destroyed
§ 17.32.100(D) Historic resources exception referenced by § 17.36.030(B)
§ 17.68.090 Definitions (Nonconforming Use)
§ 17.64.140–.150 R‑1 motel findings and limits (nonconforming use in R‑1)
§ 17.14.020 Commercial district blocks/lots; § 17.14.060–.070 CC/SC/RC operations
§ 17.14.040(W) Transient rentals: legal nonconforming status and abandonment inapplicability (CC/SC/RC)
§ 17.44.030 Lot line adjustments—no creation/increase of nonconformity; required cures
§ 17.58.050–.060 Design Review conditions and findings
R‑1 purpose and objectives (§ 17.10.010); R‑1 transient lodging prohibition (§ 17.08.060); single‑family dwelling regs context (§ 17.08.050, H)
Park/overlay mapping and review triggers (§ 17.20.100; overlay figures)
HCD 2025 ADU Handbook (state nonconforming‑condition limits for ADUs; Gov. Code §§ 66322(b), 66323(c))

Sources

Retrieved passages

CMC § 1 (Title 15) High relevance
CMC § 1 (§ 1) High relevance
CMC § 050 High relevance
Carmel-by-the-Sea Zoning Code (§ 1) High relevance
CFC § 100 High relevance
CMC § 1 (title and) High relevance
CBC § 66321 (§ 66321) Medium relevance
Carmel-by-the-Sea Zoning Code Medium relevance
CMC § 17.14.040 (§ 17.14.040) High relevance
CMC § 1 (§ 1) Medium relevance
Carmel-by-the-Sea Zoning Code (§ 1) Medium relevance
CMC § 1 (title shall) Medium relevance
CMC § 1 (§ 1) Medium relevance
CBC § 66314 (§ 66314) Medium relevance
CMC § 1 (§ 1) Medium relevance
Carmel-by-the-Sea Zoning Code (§ 17.02.030.) Medium relevance
Carmel-by-the-Sea Zoning Code (title shall) Medium relevance
Carmel-by-the-Sea Zoning Code (§ 1) Medium relevance

Cited sections

Official Carmel-by-the-Sea code library

Frequently asked questions

What is a “nonconforming use” in Carmel-by-the-Sea?

It’s a use that was legal when established but doesn’t fit current district use rules. It may continue with limits on expansion and repair activity (§ 17.68.090; § 17.36.050(A) ).

Can I enlarge a building that contains a nonconforming use?

No. You cannot increase the floor area, building envelope, or exterior volume; repairs and alterations are capped at 10% of the building (or affected portion) value in any 12 months (§ 17.36.050(A) ).

What happens if a nonconforming building is mostly destroyed by fire?

If damage exceeds 75%, reestablishing the nonconforming building requires a Planning Commission use permit and special reconstruction findings (§ 17.36.040(B); § 17.64.130 ).

Do the rules change for historic buildings?

Yes. Alterations that would normally increase a nonconformity can sometimes be approved if they comply with historic preservation standards under § 17.32.100(D) (§ 17.36.030(B) ).

Are older transient rentals protected?

In the CC, SC, and RC districts, transient rentals permitted before Ordinance 2019‑03 are legal nonconforming; their permits run in perpetuity and the six‑month abandonment rule does not apply (§ 17.14.040(W) ).

What if my nonconformity is about parking or floor area, not operations?

A change in ownership does not force correction of physical/structural nonconformities; however, nonconforming operational standards must be cured when a replacement use takes over (§ 17.36.050(C) ).

Can I do a lot line adjustment to fix a setback nonconformity?

Possibly, but no lot line adjustment may create or increase a zoning nonconformity; curing can be required when reasonable (§ 17.44.030(A), (J) ).

Do ADUs have to fix my property’s old zoning nonconformities first?

Generally no. State ADU law limits cities from denying an ADU due to nonconforming zoning conditions unless there’s a health/safety threat affected by the ADU (§§ 66322(b), 66323(c); HCD Handbook) .

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