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Exeter — Development Standards

Development Standards under the Exeter local zoning and planning code, with the controlling citations.

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Last reviewed: July 2, 2026

Overview

This page summarizes the Exeter zoning ordinance rules that control development standards (setbacks, heights, lot coverage, density, and accessory-structure rules) across the city’s zoning districts. It is based on the City of Exeter zoning code excerpts supplied and focuses only on what the local ordinance itself says; it does not cover building-code construction requirements (see California Building Standards Code for that topic). For rules about off-street vehicle stalls see the city’s guidance on parking.

How to read this page

  • Each district below lists the ordinance purpose, typical permitted uses, the most decision-relevant dimensional standards, and where that text is found in the code (the controlling § is shown and the source file cite is given).
  • When the ordinance does not specify a standard you asked about (for example FAR), the page says so explicitly.

Note: this page links to Exeter pages on related topics where the code refers to them: the first time this page mentions development standards it links to Exeter Land Use; the first time it mentions parking it links to the Exeter Parking page; the first time it mentions design review it links to Exeter Design Review; the first reference to overlay districts links to Exeter Overlay Districts; the first reference to ADUs links to Exeter ADUs; the first reference to the statewide code links to the California Building Standards Code.

District-by-district development standards (summary + where to confirm)

  • All quoted numeric standards below are taken from the city ordinance and keyed to the controlling section (§) and the file-search result that contains that section.

R-1 (Single‑Family Residential: R-1-5, R-1-6, R-1-7.5, R-1-10)

  • Purpose & common uses: single‑family homes, accessory uses, manufactured homes (subject to design standards). § 17.16.01–.03.
  • Key dimensional standards:
    • Minimum lot area/width/depth: varies by subzone (e.g., R-1-5 = 5,000 sf, 50 ft width; R-1-10 = 10,000 sf, 70 ft width). See § 17.16.06.
    • Front yard: 15 ft (R-1-5), 20 ft (R-1-6 & R-1-7.5), 25 ft (R-1-10); where adjacent lots are set back less, the code allows averaging. § 17.16.06(E)(1).
    • Side yard: typically 5 ft (special case R-1-10 may require 5 and 12 ft). Corner street-side = one‑half of required front yard. § 17.16.06(E)(2–3).
    • Rear yard: 15–25 ft depending on subzone (see table). § 17.16.06(E)(5).
    • Building height: 35 ft max for residences; accessories 15 ft. § 17.16.06(C).
    • Lot coverage: 40%. § 17.16.06(D).
  • Notes: garages/carports facing a street must be set back 20 ft from back of sidewalk/property line. § 17.16.06(E)(3).
  • ADUs / second units: allowed with separate rules (see Chapter 17.64 / ADU page). § 17.16.02 / § 17.64.

RM (Multi‑Family Residential: RM‑3, RM‑1.5)

  • Purpose & common uses: multi-family housing; density and design rules apply. § 17.18.01–.05.
  • Key dimensional standards:
    • Density: expressed as minimum lot area per unit — RM‑3 = 3,000 sf/unit and RM‑1.5 = 1,500 sf/unit (this is the code’s way to cap density). § 17.18.07(A).
    • Front yard: 20 ft (RM‑3); 15 ft (RM‑1.5). § 17.18.07(E)(1).
    • Side yards: generally 5 ft. § 17.18.07(E)(2).
    • Rear yard: 20 ft (RM‑3), 10 ft (RM‑1.5) with adjustments for multi‑story. § 17.18.07(E)(5).
    • Building height: 35 ft; accessory 15 ft. § 17.18.07(C).
    • Lot coverage: RM‑3 = 50%, RM‑1.5 = 65%. § 17.18.07(D).

PO (Professional Office)

  • Purpose & uses: small offices, compatible small retail uses; site plan review required. § 17.20.01–.05.
  • Key standards:
    • Minimum lot area: 6,000 sf. § 17.20.06(A).
    • Front yard: 15 ft minimum. § 17.20.06(E)(1).
    • Side yard: 5 ft minimum; special averaging provisions apply when adjacent building setbacks are less. § 17.20.06(D)–(E).
    • Rear yard: 10 ft. § 17.20.06(E).
    • Lot coverage: 60%. § 17.20.06(D).
    • Height: 35 ft (residential standard); accessory 15 ft. § 17.20.06(C).
  • Parking: see city parking standards. § 17.20.07 references Chapter 17.68 for parking. parking.

CN (Neighborhood Commercial)

  • Purpose & uses: neighborhood retail and services; mixed small-scale commercial. § 17.22.01–.05.
  • Key standards:
    • Minimum parcel size: 6,000 sf (max parcel size also defined). § 17.22.05(A).
    • Front yard: 15 ft. § 17.22.05(D)(1).
    • Height: 35 ft (commercial); accessory 15 ft. § 17.22.05(C).
    • When abutting residential zones: 10 ft side/rear setbacks and 7‑ft block wall screening are required. § 17.22.05(D)(2–3) and § 17.22.06(C).
    • Design/landscaping/parking: the code requires landscaping, shading of parking to 50% within five years, and a landscaping plan for centers >2,500 sf. § 17.22.09; off‑street parking per Chapter 17.68. § 17.22.07. parking.

MU (Mixed Use)

  • Purpose & uses: integrate residential, office and neighborhood-commercial uses subject to conditional-use processing. § 17.21.01–.04.
  • Key standards:
    • Minimum parcel size: 5,000 sf. § 17.21.05(A).
    • Building height: 35 ft (commercial). § 17.21.05(C).
    • Yards: generally no front yard requirement, side/rear only if abutting residential (10 ft). § 17.21.05(D).
    • Site plan & design: MU projects require a project master plan and site plan review; the code includes fences and landscaping standards. design review / site plan rules. § 17.21.04–.10.

CH (Highway Commercial)

  • Purpose & uses: highway-oriented commercial uses; site plan review required. § 17.30.01–.05.
  • Key standards:
    • Minimum parcel size: 10,000 sf. § 17.30.06(A).
    • Front yard: 20 ft; building height up to 45 ft (accessory up to 35 ft). § 17.30.06(C–D).
    • When abutting residential: 10 ft side/rear setbacks and required screening/walls. § 17.30.06(D) and § 17.30.07(A).

CS (Service Commercial) and CC (Central Commercial)

  • CS: service/repair, light industrial-adjacent commercial—45 ft building height; minimum site 10,000 sf with yards and screening where abutting residential. § 17.26.06.
  • CC: downtown core—no minimum lot size, 45 ft height cap; parking located to rear/side of buildings; downtown design overlay standards apply. § 17.24.06.

I (Industrial)

  • Purpose & uses: manufacturing, processing, heavy commercial. § 17.32.01–.05.
  • Key standards:
    • Minimum parcel: 20,000 sf. § 17.32.06(A).
    • Building height: 45 ft (accessories up to 75 ft). § 17.32.06(C).
    • Yards: front 15 ft; side/rear usually none except where abutting residential (then 10 ft). § 17.32.06(D).

O (Open Space)

  • Purpose & standards: open space preservation—35 ft front yard, 10 ft side, no lot coverage requirement; height generally 35 ft for structures. § 17.38.06.

PD (Planned Development Overlay)

  • Applicability: an overlay that is combined with base zones; it adjusts minimum lot size, layout, and permits design flexibility while requiring a development plan and site plan review. See § 17.42.01–.07. Overlay district guidance.
  • Summary of PD controls:
    • Minimum site area for PD‑single family: 1 acre; lot size/density/height/coverage generally follow the base zone unless otherwise specified in the PD plan. § 17.42.07(A–D).

Accessory structures / Special-use rules

  • Chapter 17.64 and Exhibit 64‑1 provide accessory-structure specifics: setbacks (side/rear 10 ft normally, can be reduced for small non‑habitable structures), maximum accessory height 15 ft, size limits (e.g., non‑habitable accessory ≤ 25% of primary structure), and rules for sheds ≤120 sf. § 17.64.

Quick reference table — most decision‑relevant numeric standards

District Typical front yard Side yard Rear yard Max height (primary) Lot coverage / density Code Reference
R‑1‑5 / R‑1‑6 / R‑1‑7.5 / R‑1‑10 15 / 20 / 20 / 25 ft 5 ft (varies) 15–25 ft 35 ft 40% § 17.16.06
RM‑3 / RM‑1.5 20 / 15 ft 5 ft 20 / 10 ft 35 ft RM‑3: 3,000 sf/unit; RM‑1.5: 1,500 sf/unit § 17.18.07
PO 15 ft 5 ft 10 ft 35 ft 60% cover § 17.20.06
CN 15 ft No req. / 10 ft if adjacent R No req. / 10 ft if adjacent R 35 ft Min parcel 6,000 sf § 17.22.05
MU No req. No req. / 10 ft if adjacent R No req. / 10 ft if adjacent R 35 ft Min parcel 5,000 sf § 17.21.05
CH 20 ft None (10 ft if adjacent R) None (10 ft if adjacent R) 45 ft Min 10,000 sf § 17.30.06
CS / CC / I varies (see text) see text see text 45 ft CS & I min parcel 10,000 / 20,000 sf § 17.26.06 / 17.24.06 / 17.32.06

Checklist (what an applicant must satisfy for a typical project)

  • Prepare and submit a site plan consistent with the site plan review requirements in the relevant chapter (site plan review is required in most districts: e.g., § 17.16.05, § 17.20.05, § 17.21.04, § 17.30.05).
  • Confirm base zone standards: lot area, frontage, depth and yard setbacks per applicable section (e.g., § 17.16.06 for R‑1; § 17.18.07 for RM).
  • Confirm permitted uses / whether conditional use permit is needed (each chapter lists permitted and conditional uses). Example: § 17.14.02 (RA), § 17.22.02–.04 (CN).
  • Provide off‑street parking per Chapter 17.68 (see district references to Chapter 17.68). parking.
  • Landscaping and irrigation plan where required (districts have specific landscaping thresholds, e.g., >2,500 sf). § 17.21.09 / § 17.22.09.
  • Comply with fences/walls rules and required screening when commercial abuts residential (§ 17.22.06, § 17.30.07, etc.).
  • For accessory structures or second units, follow Chapter 17.64 and the ADU rules. ADUs.
  • If proposing a Planned Development overlay or design exceptions, include the PD development plan and demonstrate consistency with § 17.42.05–.07. Overlay districts.
  • Verify any required design review or downtown overlay standards (e.g., CC / Downtown design). design review.
  • Confirm that construction complies with state codes (California Building Standards Code / Title 24) — not covered in these chapters; verify with building department and Title 24. California Building Standards Code.

Risks & Ambiguities

Issue Why it matters What to verify
FAR (floor area ratio) not stated in code FAR is commonly used for commercial/multi‑family massing but Exeter’s chapters use % lot coverage and unit‑area density instead. If you need FAR to model massing you have no local number to use. FAR: Not found in retrieved materials — verify with Planning Dept whether any overlay or specific plan establishes an FAR.
Which element defines “height” (mean roof, parapet, ridge) Projects can be rejected if the measuring point differs from the plan set. The code lists numeric height caps but not measurement conventions in every chapter. Confirm measurement method with the City (e.g., top of ridge vs. eave) — Verify with the jurisdiction. Not explicit in retrieved materials.
Conflicting/averaging setback rules where lots differ Several districts allow averaging where adjacent buildings have lesser setbacks; that produces project‑specific setbacks. § 17.16.06(E) allows front‑setback averaging in R‑1. When a lot is between nonconforming neighboring setbacks, confirm which adjacent parcels are used in averaging and whether staff requires documented measurements. Verify with Planning.
Accessory structure exceptions and minor deviations Accessory rules allow some reductions (e.g., small sheds, minor deviation permits) but with conditions (size, no MEP). See Chapter 17.64. If proposing a close‑set accessory building, confirm whether a Minor Deviation is required and the evidence needed.
PD overlay flexibility vs. base zone rules PD allows tailored standards but requires an approved development plan and findings. A developer may assume more flexibility than the PD approved plan allows. § 17.42.07. For PD proposals, confirm the exact PD ordinance language and approved exhibits — don’t assume the base zone automatically governs.
Parking counts & special parking rules District chapters reference Chapter 17.68 for parking but don’t repeat rates; missing a district‑specific rate will delay approval. Chapter 17.68 reference appears throughout. Pull Chapter 17.68 (parking) and confirm bicycle, ADA, EV, and compact stall rules with the Planning Dept. parking.

Plain-English Summary

Exeter’s zoning code controls how close you can build to property lines, how tall buildings can be, how much of a lot buildings can cover, and minimum lot sizes — rules vary by district (for example, R‑1 single‑family lots generally cap coverage at 40% and height at 35 ft, while CH and many commercial zones allow up to 45 ft). Always check the base‑zone section for the numeric standards (the § references above) and remember site plan review, parking, landscaping and required screening are recurring city requirements.

Source References

  • Exeter Zoning Ordinance — R‑1 development standards: § 17.16.06.
  • Exeter Zoning Ordinance — RM development standards (density by sf per unit): § 17.18.07.
  • Exeter Zoning Ordinance — PO development standards: § 17.20.06.
  • Exeter Zoning Ordinance — CN development standards and fences: § 17.22.05–.06.
  • Exeter Zoning Ordinance — MU development standards: § 17.21.05.
  • Exeter Zoning Ordinance — CH development standards: § 17.30.06.
  • Exeter Zoning Ordinance — CS / CC / I development standards: § 17.26.06 / § 17.24.06 / § 17.32.06.
  • Exeter Zoning Ordinance — UR / RA / O development standards: § 17.12.05 / § 17.14.05 / § 17.38.06.
  • Planned Development overlay (PD): § 17.42.01–.07 (PD application and standards). Overlay districts.
  • Accessory structures and Minor Deviation rules: Chapter 17.64, Exhibit 64‑1.
  • Off‑street parking references (districts refer to): Chapter 17.68 (see district sections that call out Chapter 17.68). parking.
  • For construction details and compliance (outside zoning): California Building Standards Code (Title 24). California Building Standards Code.

(If you want direct links to the specific chapter PDFs or the city’s code page, I can attach or retrieve them; verify all numeric values against the official PDF or the Planning Department before final submittal.)

Sources

Retrieved passages

  • Exeter Zoning Code (Chapter 14) High relevance
  • Exeter Zoning Code (Chapter 20) High relevance
  • Exeter Zoning Code (Chapter 12) High relevance
  • Exeter Zoning Code (Chapter 17.54) High relevance
  • Exeter Zoning Code (Chapter 17.54) High relevance
  • Exeter Zoning Code (Chapter 42) High relevance
  • Exeter Zoning Code (Chapter 16) High relevance
  • Exeter Zoning Code (Chapter 42) High relevance
  • Exeter Zoning Code (Chapter 17.54) High relevance
  • Exeter Zoning Code (Chapter 20) High relevance
  • Exeter Zoning Code (Chapter 17.64) High relevance
  • Exeter Zoning Code (Chapter 17.54) High relevance
  • Exeter Zoning Code (Chapter 17.64) High relevance

Cited sections

Frequently asked questions

What can I build on an R‑1 lot in Exeter?

You can build single‑family dwellings and accessory uses allowed in R‑1; manufactured homes and second units are permitted subject to special-use rules. The R‑1 development standards (lot sizes, setbacks, coverage, height) are in § 17.16.06.

What are Exeter setback requirements for R‑1 lots?

Front, side and rear setbacks depend on the R‑1 subzone: R‑1‑5 front 15 ft; R‑1‑6 & R‑1‑7.5 front 20 ft; R‑1‑10 front 25 ft; side yards generally 5 ft; rear yards 15–25 ft. See § 17.16.06(E) for the full table and averaging rule.

Do I need site plan review or design review in Exeter?

Most non‑trivial developments require a site plan and review before construction — site plan review is explicitly required in many district chapters (e.g., § 17.20.05 for PO, § 17.21.04 for MU). For downtown/central commercial projects check the downtown design overlay/design‑standards sections. design review / site plan rules are in the district chapters cited.

Where are Exeter’s parking requirements?

District chapters reference the city’s parking and loading chapter: Chapter 17.68. See the district sections (for example § 17.20.07 for PO; § 17.22.07 for CN; § 17.21.07 for MU) that point you to Chapter 17.68. parking.

Does Exeter’s code specify FAR (floor area ratio)?

No — the retrieved zoning chapters use lot coverage and unit‑area (sf per dwelling) density limits rather than an FAR figure. FAR: Not found in retrieved materials; verify with the Planning Department for any overlay or specific plan numeric standard.

What are the maximum heights in Exeter zones?

Residential and mixed‑use zones generally cap primary building height at 35 ft (e.g., § 17.16.06(C), § 17.18.07(C)). Some commercial/industrial districts allow 45 ft (e.g., CH, CC, CS, I — see their respective sections). Consult the specific zone section for exact accessory heights.

Can I build an ADU in Exeter and where are the rules?

Yes — ADUs/second units are recognized in multiple districts but are controlled by the special‑uses/accessory rules (Chapter 17.64) and district references. Check § 17.64 together with the base zone standards for setbacks and parking; also confirm state ADU requirements. ADUs.

If my property is next to residential, are there extra requirements?

Yes. Where commercial, industrial or mixed‑use parcels abut residential zones the code typically requires 10 ft side/rear setbacks and screening (often a 7‑ft solid block wall). See example citations: § 17.22.05(D) and § 17.22.06(C) for CN; similar rules appear in CH, CS, I chapters.

Where do I find rules for accessory structures and small sheds?

Accessory standards and special exceptions (e.g., small sheds up to 120 sf, reduced setbacks when no MEP, accessory max height 15 ft, non‑habitable size ≤25% of primary) are in Chapter 17.64 and Exhibit 64‑1. § 17.64.

How are multi‑family density limits expressed in Exeter?

Multi‑family density is specified as minimum lot area per dwelling unit rather than units/acre. Example: RM‑3 = 3,000 sf per unit; RM‑1.5 = 1,500 sf per unit. See § 17.18.07(A). ---

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