Sand City — Nonconforming Uses

Last reviewed: July 2, 2026

Overview

This page summarizes how Sand City treats nonconforming uses, nonconforming structures, and nonconforming lots under the City zoning ordinance (Title 18). It explains what may continue, what triggers loss of status, limits on repairs and expansions, and the approvals the City uses (City Council/site plan/conditional use) to authorize any change. For the ordinance text and district maps see the city's Sand City Zoning materials. All rules below are grounded in the Sand City Zoning Ordinance; exact controlling sections are cited in-text.

Core rules (what the ordinance says, plain-English with citations)

• Existing lawful uses, buildings or structures that do not comply with a new zoning rule may continue as nonconforming unless they were unlawful under an earlier ordinance or the Coastal Act; see § 18.70.010 .
• If a use is listed as a conditional use in the new district but existed legally before adoption, it remains a nonconforming use until a conditional use permit is obtained: § 18.70.020 .
• General prohibition on enlarging, extending, reconstructing, substituting, or structurally altering a nonconforming building or use except where required by law, or unless it is changed to a permitted use in that district: § 18.70.030 .
• The City Council may authorize limited extensions or completion of a building devoted to a nonconforming use when necessary and incidental; extensions are strictly guided by criteria in § 18.70.040 (see list below) .
• Cessation rules (when the nonconforming status is lost):
  • Buildings originally designed for the nonconforming use: loss after six months of discontinuance (§ 18.70.050.A) .
  • Buildings not originally designed for the nonconforming use: loss after three months of discontinuance (§ 18.70.050.B) .
  • Nonconforming uses of land (no building) generally lose status after 60 days of discontinuance, except for minor structures under 400 sq ft (§ 18.70.050.C) .
• Nonconforming uses brought into compliance with new performance standards must do so within three years from adoption of the ordinance (§ 18.70.080) .
• Repairs and maintenance are allowed; structural alterations are restricted. Total structural repairs/alterations during the life of the nonconforming building may not exceed 50% of its reasonable market value as determined by City Council, unless the use is changed to a conforming use (§ 18.70.110) .
• If a nonconforming building is damaged by calamity, it may be restored and used as before provided reconstruction is substantially complete within six months (§ 18.70.090) .
• Conversions of existing dwellings to nonresidential uses require a conditional use permit; Council will require adequate parking, circulation, fencing and landscaping as a condition (§ 18.70.120) . For on-site parking rules see the city's Sand City Parking standards.

Key City Council guidance for any approved extension (from § 18.70.040) includes: restrict extensions to the recorded parcel; require structures to comply with applicable district standards; allow change only to a use allowed in a more restrictive zone; require written agreement and approved site plan between owner and City (see § 18.70.040 for the full list) .

If the ordinance requires work "required by law" (e.g., safety upgrades), those structural changes are allowed; verify applicable state codes such as the California Building Standards Code where invoked — the Sand City ordinance refers to work required by law but does not reproduce Title 24 standards (Not found in retrieved materials within the City code itself) .

District-by-district notes (where nonconforming rules commonly interact with district standards)

Below are the City districts present in the retrieved ordinance excerpts where nonconforming rules commonly arise. For each I list purpose, typical uses, key dimensional standards, where it applies, and the nonconforming rule pointers.

R-3 (Multiple-Family Residential)

• Purpose/typical uses: higher-density residential including multifamily units and SROs; see permitted uses lists in Chapter 18.12. § 18.12.010–050 .
• Key dimensional standards: minimum site 3,750 sq ft, front yard 5 ft, rear yard 15 ft, side yards 5 ft, height 16 ft (single-story) or up to 36 ft for multi-story (specifics at § 18.12.050) .
• Where it applies: R-3 zones shown on the Sand City zoning map; design review/site plan approval required for many alterations (§ 18.12.060) .
• Nonconforming interaction: Existing nonconforming residential buildings may continue, but structural changes are limited by § 18.70.030 and repair/value limits in § 18.70.110; site plan and design review requirements in the district apply when alteration is proposed .

M (Manufacturing)

• Purpose/typical uses: industrial/manufacturing, warehousing, commercial parking, utility substations, SROs in limited form (§ 18.20.010, uses list) .
• Key dimensional standards: minimum lot 3,750 sq ft, front setback 20 ft, rear/side 0 ft, FAR 1.0, height up to 75 ft in certain areas (§ 18.20.060) .
• Nonconforming interaction: The M district specifically notes that uses existing at enactment that are nonconforming may continue and that a dimensionally nonconforming building may be expanded to the extent of existing nonconformance provided a site plan is filed on first expansion; see § 18.20.060.C and the general nonconforming rules (§ 18.70.010–040) .

CZ-M (Coastal Zone Manufacturing)

• Purpose/typical uses: similar to M but within the coastal zone; coastal rules apply (§ 18.40.050–080) .
• Key dimensional standards: minimum area 3,750 sq ft, front setback 10 ft, rear/side 0 ft, and specific height limits (e.g., 36 ft for new development; some industrial east of Hwy 1 up to 75 ft) (§ 18.40.070–080) .
• Nonconforming interaction: CZ-M allows continuation of nonconforming uses with no time limitations, but expansion is not allowed for nonconforming uses established by the local coastal program (§ 18.40.070.D) — when inside the coastal zone, check both Chapter 18.70 and coastal-specific limitations § 18.40.070.D .

CZ-MU-P (Coastal Zone Mixed Use — Planned)

• Purpose/typical uses: mixed commercial, light industrial, live/work, hotels, multifamily at regulated densities; conditional uses include stores, restaurants, hotels, medical offices, and live/work units (§ 18.26.040) .
• Key dimensional standards: lot minimums vary (no parcel < 3,750 sq ft after 1/17/1984 unless single-family at 1,875 sq ft permitted), front/side/rear setbacks approved by site plan, height up to 60 ft where allowed, and site plan approval required (§ 18.26.050–060) .
• Nonconforming interaction: Conversions, expansions or substantial remodeling (> 25% increase in floor area) may trigger application of current MU-P site development standards and coastal development permit requirements (§ 18.26.030 and related notes) — apply § 18.70.030–040 in parallel and expect site plan/Council review .

PF (Public Facilities)

• Purpose/typical uses: government, utilities, schools, emergency/transitional housing and supportive housing (§ 18.21.020) .
• Key standards & application: PF lists permitted public uses and housing-related facilities; nonconforming public uses remain governed by Chapter 18.70 when a site’s use changes from pre-existing conditions (§ 18.21.020) .

CZ IP (Coastal Zone Industrial Park)

• Purpose/typical uses: compatible mix of commercial and industrial employment uses; special controls tailored to locations (§ 18.42.010) .
• Nonconforming interaction: where coastal overlay applies, use § 18.70 plus CZ-specific restrictions; site plan/site approvals required for construction or physical alterations.

(For district maps and exact zone locations, consult the City zoning map found on the Sand City zoning pages: Sand City Zoning.)

Decision-relevant quick-reference table

Checklist (what an applicant must satisfy or prepare)

• Confirm the use/building was lawfully established prior to the current ordinance (verify title/permit history) as required by § 18.70.010 .
• If change or extension is sought, prepare a site plan and written agreement for Council consideration (see criteria in § 18.70.040 and Council authorization requirements) .
• Show compliance with district-specific measurable standards (setbacks, lot area, height) per the applicable district chapter and Sand City Development Standards — examples: § 18.12.050 for R-3 and § 18.20.060 for M .
• Prepare parking and circulation documentation when proposing a conversion or intensification (Council will require adequate provisions per § 18.70.120); see Sand City Parking standards for details .
• If site plan or design review is required, file with materials to satisfy the City’s Sand City Design Review and site plan chapters (Ch. 18.68) .
• Expect Council to evaluate the continued use for nuisance/health & safety — nonconforming status does not protect public nuisances (see § 18.70.130) .

Risks & Ambiguities

Plain-English Summary

If your business or building was legal when Sand City's current zoning rules were adopted, you can usually keep using it even if those rules would now forbid it—but you cannot expand it or change it in significant ways without City Council approval, and if the use stops for the time limits in the code (3 months, 6 months, or 60 days depending on circumstances) you lose the protection and cannot restart the nonconforming use later (§ 18.70.010–050) .

Information Gaps

• The ordinance excerpts do not include the full zoning map showing exact parcel zoning designations (verify with the City zoning map). Not found in retrieved materials.
• The code refers to work "required by law" but does not reproduce specific state building-code citations; check the California Building Standards Code for technical compliance requirements (Not reproduced in local code excerpts) .
• The ordinance does not explicitly discuss ADUs in Chapter 18.70; for ADUs consult state ADU law and the City's ADU page (Sand City ADUs) — statutory interplay not detailed in the retrieved municipal text. Not found in retrieved materials .

Source References

• Sand City Zoning Ordinance — General nonconforming provisions: § 18.70.010 through § 18.70.130 (continuing uses; conditional uses; enlargement; cessation; repairs; conversion; nuisance; reconstruction) .
• Definition of Nonconforming Use — § 18.04.380 (definition) .
• R-3 district dimensional and other standards (examples): § 18.12.050–060 .
• M district development standards and nonconforming notes: § 18.20.060 .
• CZ-M district rules including coastal nonconforming guidance: § 18.40.070–080 .
• CZ-MU-P district uses and development standards: § 18.26.040–060 .
• Zoning compliance review and permit requirements: Chapter 18.72, including § 18.72.010 on zoning compliance review (zoning compliance statements) .
• Site plan approval requirements: Chapter 18.68 (purpose, fees) and site plan triggers (§ 18.68.010–020) .
• State ADU guidance (uploaded reference): 2025 California ADU handbook — for state rules affecting nonconforming conditions (note: state material included for context; the municipal ordinance does not incorporate these ADU-specific rules into Chapter 18.70) .

Retrieved passages

• Sand City Zoning Code (§32-4) High relevance show source text
• Sand City Zoning Code (§ 18.70.040.) High relevance show source text
• Sand City Zoning Code (§4) High relevance show source text
• CFC § 18.70.070 (§ 18.70.070.) High relevance show source text
• Sand City Zoning Code (§ 18.04.370.) High relevance show source text
• CFC § 32 (§32-10) High relevance show source text
• Sand City Zoning Code (§ 18.04.355.) Medium relevance show source text
• Sand City Zoning Code (§1) Medium relevance show source text

Cited sections

• Sand City Zoning Ordinance — General nonconforming provisions: **§ 18.70.010** through **§ 18.70.130** (continuing uses; conditional uses; enlargement; cessation; repairs; conversion; nuisance; reconstruction) . (§ 18.70.010)
• Definition of **Nonconforming Use** — **§ 18.04.380** (definition) . (§ 18.04.380)
• R-3 district dimensional and other standards (examples): **§ 18.12.050–060** . (§ 18.12.050)
• M district development standards and nonconforming notes: **§ 18.20.060** . (§ 18.20.060)
• CZ-M district rules including coastal nonconforming guidance: **§ 18.40.070–080** . (§ 18.40.070)
• CZ-MU-P district uses and development standards: **§ 18.26.040–060** . (§ 18.26.040)
• Zoning compliance review and permit requirements: Chapter **18.72**, including **§ 18.72.010** on zoning compliance review (zoning compliance statements) . (§ 18.72.010)
• Site plan approval requirements: Chapter **18.68** (purpose, fees) and site plan triggers (**§ 18.68.010–020**) . (§ 18.68.010)
• State ADU guidance (uploaded reference): 2025 California ADU handbook — for state rules affecting nonconforming conditions (note: state material included for context; the municipal ordinance does not incorporate these ADU-specific rules into Chapter 18.70) . (Chapter 18.70)
• SandCity_ZoningCode.md
• 2025 California ADU handbook.md

• Official Sand City code library