Exeter — Nonconforming Uses

Last reviewed: July 2, 2026

Overview

This page summarizes how Exeter's Zoning Ordinance treats nonconforming uses, nonconforming structures, and nonconforming lots (the rules that let legally-established-but-now-mismatched buildings/uses remain). The controlling provisions are in Chapter 60 (Non‑Conforming Uses and Structures), Chapter 2 (General Provisions) for nonconforming lots, and several chapter-level specialty rules (signs, adult businesses). Read this as a plain‑English guide grounded to the exact code citations so you can confirm on a parcel-by-parcel basis. For implementation details you will also often need the city's rules on parking, development standards, and design review.

Core legal rules (what Exeter's ordinance actually says)

• Definition: A non‑conforming use is a use lawfully established before adoption of the Zoning Ordinance but that does not comply with current use rules; a non‑conforming structure is a lawfully‑erected structure that does not comply with current coverage, setback, height, or spacing standards. See § 17.60.02 .

• Continuation & maintenance: A legal nonconforming use or structure may be continued but the ordinance seeks to prevent expansion or intensification. Routine maintenance and repairs are allowed as long as the nonconformity is not increased. See § 17.60.03(D–F) .

• Abandonment/loss of status:

  • General rule: A nonconforming use or structure that is abandoned, discontinued, or converted to a conforming use for a continuous period of six months loses legal nonconforming status and may not be reestablished; the structure must be removed. See § 17.60.03(G) .
  • Signs: nonconforming signs lose status if the advertised use ceases for 90 days or more. See § 17.69.10 .
  • Sexually‑oriented businesses: a separate amortization trigger and shorter discontinuance rule applies (see below). See § 17.65.060 .

• Alterations/expansions: Additions, enlargements or alterations that increase a nonconforming condition are prohibited unless they eliminate the nonconforming condition or are required by law. See § 17.60.03(E–F) .

• Destruction & restoration: If a nonconforming structure/use is damaged:

  • If less than 50 percent of its value is destroyed (as determined by the Chief Building Official) it may be rebuilt if restoration is started within 3 months and completed within 1 year. See § 17.60.04(A) .
  • If more than 50 percent is destroyed, it must be razed or brought into conformity; the nonconforming use may not be resumed. See § 17.60.04(B) .

• Nonconforming lots: A lot that was recorded before adoption of the ordinance and that is smaller than current district minimums may still be used for permitted or conditional uses in that district. However, adjoining under‑sized vacant lots under single ownership at adoption are treated as subject to all district regulations (i.e., cannot be split to avoid standards). See § 17.02.06 .

• Special rule for sexually‑oriented businesses: Any sexually‑oriented business nonconforming under the chapter is allowed to continue for an initial two‑year amortization with possible Council extensions for extreme hardship not to exceed a further three years; voluntary discontinuance for 30 days or more causes loss of nonconforming status for these uses. See § 17.65.060(A–C) .

District‑by‑district breakdown

Below are concise, Exeter‑specific summaries for each base district named in the ordinance. These summaries focus on the district purpose, typical permitted uses (so you can judge whether a use would be nonconforming if it predates current zoning), key dimensional standards likely to create nonconforming structures, and where the district typically applies.

Note: the ordinance identifies overlay districts (PD, DD, HN) that can modify base rules — check the overlay districts rules when a parcel carries a suffix like PD‑R‑1. See also the Exeter Zoning overview for the Official Zoning Map.

A — Agriculture (Chapter 17.10)

• Purpose: Preserve agricultural lands and very low density residential on large parcels. See § 17.10.01–05 .
• Typical permitted uses: single‑family dwellings, farming, barns, accessory agricultural structures. See § 17.10.02 .
• Key dimensional standards that commonly create nonconforming structures: minimum parcel size 20 acres, front yard 35 ft, side yard 10 ft, rear yard 25 ft, and max residential height 35 ft. See § 17.10.05 .
• Where it applies: outlying/agricultural areas shown on the Official Zoning Map. See § 17.08.05 .

UR — Urban Reserve (Chapter 17.12)

• Purpose: Hold lands as open/low density until urbanization; permitted uses include single‑family and agriculture. See § 17.12.01–05 .
• Standards similar to A: minimum parcel size 20 acres, front 35 ft, side 10 ft, rear 25 ft. See § 17.12.05 .

RA — Rural Agriculture (Chapter 17.14)

• Purpose: Very low density residential with agricultural uses. See § 17.14.01 .
• Permitted: single‑family dwellings, limited livestock, accessory structures. See § 17.14.02 .
• Dimensional highlights: min parcel / frontage standards and 35 ft building height; front yard 30–35 ft depending on exhibit — consult Chapter 17.14 exhibits if lot is marginal. See § 17.14.05 .

R‑1 — Single‑Family Residential and subdistricts (Chapter 17.16)

• Purpose: Low‑density neighborhoods. See § 17.16.01 .
• Permitted: single‑family homes, accessory uses, second units. See § 17.16.03–05 .
• Key dimensional standards (source of many nonconformities): subdistricts R‑1‑5 / R‑1‑6 / R‑1‑7.5 / R‑1‑10 with minimum lot areas 5,000 / 6,000 / 7,500 / 10,000 sq ft; front setbacks 15–25 ft, side yards 5 ft, rear yards 15–25 ft, max height 35 ft, max lot coverage 40%. See § 17.16.06 and Exhibits .

RM — Multi‑Family Residential (Chapter 17.18)

• Purpose: Medium/high density residential; allows apartments, duplexes. See § 17.18.01–03 .
• Dimensional standards differ by subdistrict (RM‑3, RM‑1.5) and are in Chapter 17.18; nonconforming multifamily setbacks or density are common triggers.

C‑N (CN) — Neighborhood Commercial (Chapter 17.22)

• Purpose: Local retail & services compatible with nearby residences. See § 17.22.01–05 .
• Dimensional highlights: min parcel 6,000 sq ft, max building height 35 ft, yards vary (10 ft buffering where abutting residential). See § 17.22.05 .

C‑C (CC) — Central Commercial (Chapter 17.24)

• Purpose: Downtown commercial core—retail, offices, entertainment. See § 17.24.01–06 .
• Key points: no minimum lot area or frontage, max height 45 ft, many ground‑floor retail uses permitted; some uses are expressly prohibited (adult bookstores, sexually oriented businesses in CC). See § 17.24.02–04 .

C‑S / C‑G / C‑H / CS — Service, General, Highway Commercial (Chapters 17.26, 17.30, etc.)

• Purpose: heavy/light commercial and highway‑oriented services. See § 17.26, § 17.30 .
• Dimensional examples: CH (Highway Commercial): min parcel 10,000 sq ft, front yard 20 ft, max height 45 ft; these standards create nonconforming issues when older buildings sit closer to street or on smaller lots. See § 17.30.06 .

I — Industrial (Chapter 17.32)

• Purpose: Industrial and service commercial uses; explicit allowance that industrial uses may include sexually‑oriented businesses in I (subject to Chapter 17.65 restrictions). See § 17.32.01–06 .
• Standards that create nonconformities: min site area 20,000 sq ft, max height 45 ft, varied yard rules — older small industrial parcels often nonconforming. See § 17.32.06 .

O / PF / Overlays — Open Space and Public Facilities (Chapters 17.38, 17.40, overlays in 17.42/17.46)

• Purpose: parks, utilities, government buildings; overlays (PD, DD, HN) can impose additional design/conformity rules; always check overlay requirements where present. See § 17.38, § 17.40, § 17.42, § 17.46 .

Quick reference table — most decision‑relevant standards

Checklist — what an applicant must satisfy to keep or change a nonconforming feature

• Confirm the feature was lawfully established before the Ordinance effective date (documentation, recorded map, permits). See § 17.60.02 .
• Confirm whether the nonconforming element is a use, structure, sign, or lot and which chapter applies (Ch. 60 for uses/structures; Ch. 2 for lots; Ch. 69 for signs). See § 17.60.02, § 17.02.06, § 17.69.10 .
• If repairs/restoration are needed, prepare cost/value estimate to determine the 50% destruction threshold and schedule (start ≤ 3 months, complete ≤ 1 year). See § 17.60.04 .
• If proposing alterations or expansion, confirm whether the change would eliminate the nonconformity (allowed) or increase it (generally prohibited) — consult Planning Director. See § 17.60.03(E–F) .
• Verify abandonment clock (continuous discontinuance time) for your feature: six months standard, but some chapters (e.g., sexually‑oriented businesses) use 30 days; signs use 90 days. See § 17.60.03(G), § 17.65.060(C), § 17.69.10 .
• Check district development standards that your property now must meet for future work — refer to the applicable district chapter and to the city's development standards and parking chapters for related requirements. See Chapter listings (e.g., § 17.16 for R‑1) .
• If project sits in an overlay (PD, DD, HN), consult the overlay district chapter early. See § 17.42, § 17.46 .
• For special cases (signs, ADUs, historic resources), consult the applicable chapters: signs § 17.69, ADU rules and state law summary are relevant; see Exeter ADU page and state code references and the California Building Standards Code if work requires building permits. See § 17.69, Government Code references in Ch. 17.64/17.64.11 and ADU law (Not found in retrieved materials for state ADU specifics in this file).
• If a variance or exception is needed, prepare findings and consult the Planning Director — see variances and exceptions. See Chapter 17.52 (Conditional Use/variance procedures referenced across district chapters) — Verify with the jurisdiction. Not all variance provisions were extracted from the retrieved materials.

Risks & Ambiguities

Plain‑English summary

If your building or business in Exeter doesn't meet today’s zoning rules but was legal when it started, Exeter usually lets it keep operating — you can do routine repairs and restore limited damage — but you generally cannot enlarge the nonconforming part, and long periods of non‑use (generally six months) mean you lose the right to continue. Special categories (signs, adult businesses) have different abandonment or amortization clocks. See § 17.60.02–04, § 17.69.10, § 17.65.060 .

Source References

• Exeter Zoning Ordinance — Chapter 60, Non‑Conforming Uses and Structures: § 17.60.01–17.60.04 .
• Exeter Zoning Ordinance — General Provisions, Nonconforming Lots: § 17.02.06 .
• Exeter Zoning Ordinance — Definitions (Non‑conforming use / structure): Chapter 72 definitions (Non‑conforming, use / structure) § 17.72 (definitions excerpt) .
• Exeter Zoning Ordinance — Sexually Oriented Businesses (amortization/nonconforming special rule): § 17.65.060 .
• Exeter Zoning Ordinance — Non‑conforming signs: § 17.69.10 .
• Exeter Zoning Ordinance — District chapters referenced above (selected): R‑1 (Single Family) § 17.16 ; A Zone § 17.10 ; I Zone § 17.32 ; CH § 17.30 ; MU § 17.21 .
• Exeter overlay rules: § 17.42 (PD), § 17.46 (DD‑X) .
• Note on ADUs and state law: State ADU law and its interaction with nonconforming zoning conditions is discussed in other guidance; the Exeter file contains local ADU references in Chapter 17.64 but not a full text of state ADU law in this extract — verify with the jurisdiction and see Exeter ADU page Exeter ADUs and California ADU law resources California ADU law. See Chapter 17.64.11 (Second Residential Units) .

Retrieved passages

• Exeter Zoning Code (Chapter 65) High relevance show source text
• Exeter Zoning Code (chapter is) High relevance show source text
• Exeter Zoning Code (Chapter 60) High relevance show source text
• Exeter Zoning Code (Chapter 58) High relevance show source text
• Exeter Zoning Code (Chapter 65) High relevance show source text
• Exeter Zoning Code (chapter shall) High relevance show source text
• Exeter Zoning Code (Chapter 65) Medium relevance show source text
• Exeter Zoning Code (Chapter 72) Medium relevance show source text
• Exeter Zoning Code (Chapter 2) Medium relevance show source text
• Exeter Zoning Code (Chapter 72) Medium relevance show source text
• Exeter Zoning Code (Chapter 1) Medium relevance show source text
• Exeter Zoning Code (Chapter 17.64) Medium relevance show source text
• Exeter Zoning Code (Chapter 10) Medium relevance show source text
• Exeter Zoning Code (Chapter 17.64) Medium relevance show source text
• Exeter Zoning Code (Chapter 17.06) Medium relevance show source text
• Exeter Zoning Code (Chapter 17.64) Medium relevance show source text
• Exeter Zoning Code (Chapter 16) Medium relevance show source text
• Exeter Zoning Code (Chapter 42) Medium relevance show source text
• Exeter Zoning Code (Chapter 64) Medium relevance show source text
• Exeter Zoning Code (Chapter 17.66) Medium relevance show source text
• Exeter Zoning Code (Chapter 32) Medium relevance show source text
• Exeter Zoning Code (Chapter 32) Medium relevance show source text
• Exeter Zoning Code (Chapter 32) Medium relevance show source text
• CBC § 000 (Chapter 64) Medium relevance show source text
• Exeter Zoning Code (Chapter 24) Medium relevance show source text
• Exeter Zoning Code (Chapter 17.64) Medium relevance show source text

Cited sections

• Exeter Zoning Ordinance — Chapter 60, Non‑Conforming Uses and Structures: **§ 17.60.01–17.60.04** . (Chapter 60)
• Exeter Zoning Ordinance — General Provisions, Nonconforming Lots: **§ 17.02.06** . (§ 17.02.06)
• Exeter Zoning Ordinance — Definitions (Non‑conforming use / structure): **Chapter 72 definitions (Non‑conforming, use / structure)** **§ 17.72** (definitions excerpt) . (Chapter 72)
• Exeter Zoning Ordinance — Sexually Oriented Businesses (amortization/nonconforming special rule): **§ 17.65.060** . (§ 17.65.060)
• Exeter Zoning Ordinance — Non‑conforming signs: **§ 17.69.10** . (§ 17.69.10)
• Exeter Zoning Ordinance — District chapters referenced above (selected): **R‑1 (Single Family) § 17.16** ; **A Zone § 17.10** ; **I Zone § 17.32** ; **CH § 17.30** ; **MU § 17.21** . (§ 17.16)
• Exeter overlay rules: **§ 17.42 (PD), § 17.46 (DD‑X)** fileciteturn2file6turn3file18. (§ 17.42)
• Note on ADUs and state law: State ADU law and its interaction with nonconforming zoning conditions is discussed in other guidance; the Exeter file contains local ADU references in Chapter 17.64 but not a full text of state ADU law in this extract — verify with the jurisdiction and see Exeter ADU page Exeter ADUs and California ADU law resources California ADU law. See Chapter 17.64.11 (Second Residential Units) . (Chapter 17.64)
• Exeter_ZoningCode.md

• Official Exeter code library