Local zoning · Modesto

Modesto — Zoning

Zoning under the Modesto local zoning and planning code, with the controlling citations.

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Last reviewed: July 2, 2026

Overview

Modesto's zoning is administered in Title 10 — Zoning Regulations of the municipal code. The official Zoning Map (the map on file with the Community & Economic Development Department) establishes the boundaries for each zone and makes the map part of the code § 10-1.402 . The code creates conventional residential, commercial, industrial, and specialized zones (for example R-1, C-2, M-1) plus form-based Downtown Zones and special-purpose zones (for example P-D, SP, A-P) that carry distinct purposes, permitted uses and development standards (see Title 10 articles listed below) .

Note: for design standards, parking, and layer-specific requirements consult the city's published standards and the related pages on this site: the discussion below links to the city's pages for parking, development standards, design review, overlay districts, historic preservation, signage, nonconforming uses, and ADUs in the first mention of each topic.

How to read this page

Each district subsection below gives: purpose (what the Code lists as intent), typical permitted uses (what the code typically allows), key dimensional standards (the most decision-relevant numbers), and where that district is applied (how to find it on the Zoning Map). All quoted controlling code sections are cited with the § number and a file citation to the retrieved Modesto Zoning Regulations.

Residential zones — R-1, R-2, R-3

  • Purpose: The residential districts are intended to accommodate low- to medium‑high density housing and accessory structures. The code explicitly describes the intent of R-1 (Low‑Density), R-2 (Medium‑Density) and R-3 (Medium‑High Density) in the Code's residential article § 10-4.102 .
  • Typical permitted uses: dwellings (single‑family and multi‑family as appropriate), accessory buildings, accessory dwelling units (ADUs) (see Chapter 4, Article 5) — ADUs are allowed per the code's references to Chapter 4, Article 5 (see the ADU page) .
  • Key dimensional standards (from Table 4.1-1): front/street-side building setback 15 ft (all residential zones), minimum interior side setback 5 ft for one‑story main buildings, two‑story side setbacks increase (adjacent to R‑1 often 10 ft or more), maximum lot coverage typically 50% (R‑1), 55% (R‑2), 60% (R‑3); minimum lot widths and areas vary by zone (see Table 4.1-1) — see § 10-4.102 and Table 4.1-1 for the full matrix .
  • Where it applies: shown on the official Zoning Map; boundary rules for ambiguous lines are in § 10-1.403 (centerlines, property lines, Director interpretation) .
  • Other process notes: new two‑story dwellings and many second‑story additions in and near R‑1 are subject to development plan review and neighborhood compatibility review under § 10-4.110 and the Development Plan Review procedures § 10-9.1001 et seq. .

(Practical: check whether a second‑story triggers § 10-4.110 review before assuming you can build a full two‑story unit.)

Professional Office — P‑O

  • Purpose: intended for administrative, professional and business service offices and to act as a buffer between residences and more intense commercial uses § 10‑4.202 (intent table) .
  • Typical permitted uses: professional offices, small medical offices in appropriate locations; development standards are in Table 4.2‑1 and accompanying text § 10‑4.202 .
  • Key dimensional standards: front setback 15 ft (P‑O), building height maximum generally 2 stories / 35 ft where not adjacent to residential (see Table 4.2‑1) § 10‑4.202 .
  • Where it applies: per Zoning Map § 10‑1.402 .

Commercial — C‑1, C‑2, C‑3, C‑M (Commercial‑Industrial)

  • Purpose: C‑1 (Neighborhood Commercial) for neighborhood shopping; C‑2 (General Commercial) for the full range of retail/offices; C‑3 (Highway Commercial) for highway‑oriented uses; C‑M accommodates commercial uses with light industrial characteristics § 10‑4.202, 10‑4.301 .
  • Typical permitted uses: retail, restaurants, personal services (vary by district); C‑M explicitly allows commercial and light industrial uses (see industrial article) § 10‑4.202, § 10‑4.301 .
  • Key dimensional standards: front setbacks range 10–15 ft depending on district and lot adjacency; parking area setbacks and side/rear setbacks vary (see Table 4.2‑1) — maximum structure heights vary by district and adjacency to residential (see § 10‑4.202 and § 10‑4.401 for height exceptions) .
  • Where it applies: Zoning Map § 10‑1.402; certain commercial activities (e.g., outdoor storage/display) have separate rules referenced in the Code § 10‑3.213 .

When planning a commercial project also review city parking rules and the city's development standards.

Industrial — M‑1, M‑2

  • Purpose: M‑1 for light industrial, assembly, storage near other uses; M‑2 for heavier industrial/manufacturing away from sensitive uses § 10‑4.301 .
  • Typical permitted uses: warehouses, manufacturing, heavy services (see Table 4.3‑1) § 10‑4.302 .
  • Key dimensional standards: industrial development standards are set in Table 4.3‑1 and text (setbacks, loading and screening requirements), with special buffering/landscaping when abutting residential § 10‑4.302 and screening in § 10‑4.405 .
  • Where it applies: Zoning Map § 10‑1.402 .

Planned Development — P‑D

  • Purpose: to encourage creative, mixed, and efficiently designed projects and to permit variations from standard density/height/standards where warranted § 10‑7.101 .
  • Typical permitted uses: any use specified in the ordinance establishing the P‑D; specific P‑D ordinances list allowed uses and conditions § 10‑7.103 .
  • Key dimensional standards: adopted as conditions of a P‑D; the City may impose conditions on height, signs, lot coverage, yards and parking. P‑D's are adopted as an ordinance and shown on the Zoning Map as P‑D (1), P‑D (2), etc. § 10‑7.105 — 10‑7.109 .
  • Where it applies: shown on the Zoning Map; consult the P‑D ordinance and the City file for the specific zone number § 10‑7.109 .

Specific Plan / Specific Plan‑Holding — SP, SP‑H

  • Purpose: the SP zone implements an adopted Specific Plan; SP‑H protects areas transitioning from agricultural use until a Specific Plan is implemented § 10‑7.302 — 10‑7.305; § 10‑7.401 .
  • Typical permitted uses: determined by the adopted Specific Plan; SP‑H allows limited agricultural uses, one single‑family dwelling per lot and limited lodging/boarding until a Specific Plan is adopted § 10‑7.402 .
  • Where it applies: applied on the Zoning Map and tied to the corresponding Specific Plan document § 10‑7.302 .

Airport Zone — A‑P

  • Purpose: to regulate height and uses in the airport approach/transition surfaces to protect air navigation and public safety § 10‑7.201 — 10‑7.202 .
  • Typical permitted uses & standards: includes definitions and height surfaces; structures and natural growth that create airport hazards are restricted; see Article 2 of Chapter 7 § 10‑7.201 et seq. .
  • Where it applies: as delineated on the Zoning Map surrounding Modesto City‑County Airport § 10‑1.402 .

Downtown form‑based zones — Central Downtown (CD), Transition Downtown (TD), Urban General Downtown (UGD), Main Street Downtown (MSD), East Neighborhood Downtown (END), Traditional Neighborhood Downtown (TND)

  • Purpose: a form‑based code to guide urban form, mixed uses, pedestrian orientation and historic preservation in downtown neighborhoods § 10‑7.501 — 10‑7.505 .
  • Typical permitted uses: mixed uses (commercial + residential) tailored by Downtown Zone; permitted uses and building types are listed in the Downtown Article and use tables (e.g., Use Types for each Downtown Zone) § 10‑7.505 .
  • Key dimensional and form standards: the Downtown code is form‑based — it regulates Building Types, Frontage Types, permitted Building Types by zone, lot frontage/parking standards, lot coverage and frontage interfaces (see Downtown Article and Table 7.5‑1 equivalents) § 10‑7.501 — 10‑7.505 .
  • Where it applies: Downtown Zones are shown on the Zoning Map; the Downtown Article supersedes conflicting Title 10 standards within its area § 10‑7.502 (the Article “shall supersede” conflicting provisions) .
  • Special notes: In downtown, all new development requires Development Plan Review and downtown has special exceptions for legally established pre‑2015 development (expansions up to 25% under conditions) § 10‑7.502—10‑7.503 .

When a project falls in downtown, consult downtown form‑based rules first and then conventional development standards if not regulated by the Downtown Article.

Mixed Use Pedestrian‑Oriented — MU‑P

  • Purpose: the MU‑P zone promotes pedestrian‑oriented multi‑family infill and guides development where streets generally are two travel lanes; it is treated as equivalent to C‑2 for commercial uses and R‑3 for high‑density residential uses when applying other parts of Title 10 § 10‑7.601 — 10‑7.602 .
  • Typical permitted uses: mixed multi‑family residential and neighborhood‑serving commercial (see Table 7.6‑1 for a list of permitted uses) § 10‑7.603 .
  • Where it applies: shown on the Zoning Map; the MU‑P article supersedes conflicting standards § 10‑7.602 .

Quick Decision‑Relevant Table (selected standards / examples)

District Typical front setback Side setback (min) Max coverage Max height (typical) Code reference
R‑1 15 ft 5 ft (one‑story); two‑story adjacent to R‑1 10 ft 50% 1–2 stories (see § 10‑4.109) § 10‑4.102
R‑2 15 ft 5 ft (one‑story); two‑story increases apply 55% 2 stories/35 ft typical § 10‑4.102
C‑2 (General Commercial) 10 ft varies (0–10 ft depending on adjacency) N/A (see lot rules) Up to 8 stories / 90 ft in some C‑2 contexts (see exceptions) § 10‑4.202
M‑1 Varies by lot Varies + buffering to residential Site‑specific Industrial heights per Table 4.3‑1 § 10‑4.301 — 10‑4.302
Downtown — CD Form‑based frontage controls (urban) Form & frontage governed by Downtown code Lot coverage managed by building type Larger urban envelopes allowed; see Downtown Article § 10‑7.501 — 10‑7.505

(Full numerical matrices for residential and commercial are in Table 4.1‑1 and Table 4.2‑1, respectively — § 10‑4.102 and § 10‑4.202) .

Checklist

  • Verify the zoning designation on the official Modesto Zoning Map (the Map is incorporated into the code) § 10‑1.402 .
  • Confirm that your proposed use is listed as Permitted/Conditional/Prohibited in the district's use tables (see the district article). If use requires a Conditional Use Permit or a variance, prepare to follow the process in Chapter 9 § 10‑9.802 — § 10‑9.804 .
  • Run the project against the applicable development‑standards table (residential Table 4.1‑1 § 10‑4.102; commercial Table 4.2‑1 § 10‑4.202) and the Downtown Article if in downtown § 10‑7.501 — 10‑7.505 .
  • Confirm whether Development Plan Review is required (many projects are) and follow Chapter 9, Article 10 procedures § 10‑9.1001 — 10‑9.1005; request a waiver only for eligible minor work § 10‑9.1003 .
  • Check applicable design review guidelines cited by the Code § 10‑4.113 .
  • Calculate parking (see the city's parking rules) and any required landscaping/screening per § 10‑4.405 (screening) and landscaping and screening requirements .
  • If project affects or uses historic resources, consult the Downtown Historic provisions and historic preservation guidance (Downtown Article highlights special rules) § 10‑7.501 .
  • If proposing an ADU, check Chapter 4, Article 5 and the city's ADU page ADUs (ADU-specific rules referenced throughout the Code) .
  • For any sign work, consult the sign article and the city's signage rules (See Title 10, Chapter 6) .
  • For boundary uncertainty or prezoning questions, see director interpretation rules § 10‑1.403 — 10‑1.404 .

Risks & Ambiguities

Issue Why it matters What to verify
Zoning map boundary ambiguity Boundaries drawn “approximate” on the map can change whether a parcel is in a residential or commercial zone, affecting permitted uses and setbacks Verify boundary lines with the Director and consult § 10‑1.403; confirm with city planning staff
Downtown exceptions for pre‑2015 uses Certain pre‑June 25, 2015 uses can be expanded up to 25% under special rules — may limit or allow incremental expansion § 10‑7.503 If project is in downtown and predates 2015, verify which Downtown Historic Zoning Designation applied and whether an administrative exception is needed
Nonconforming use amortization Uses that become nonconforming after a map amendment may be subject to a short amortization/termination period § 10‑3.505 Determine whether your use is nonconforming, whether it qualifies for exemptions, and whether amortization deadlines apply; verify with the Director
Second‑story/height triggers in residential A second‑story near R‑1 can trigger development plan review and neighborhood compatibility analysis § 10‑4.110 Check whether a proposed second story meets the triggers in § 10‑4.110 and the notice/process in § 10‑9.1005(f); consider neighbor notification
Planned Development (P‑D) unique conditions P‑D zones are adopted with custom conditions that override standard numeric rules § 10‑7.101 — 10‑7.109 Always pull the P‑D ordinance/resolution for site‑specific conditions and the P‑D map designation number (e.g., P‑D (1))
Interpretation of “equivalent zone” for Downtown Downtown zones are mapped to equivalents for applying other Title 10 rules; misreading equivalency may cause incorrect standard application § 10‑7.502 Verify which Downtown Zone applies and which equivalent zone the Director uses for any cross‑application of standards

Plain‑English Summary

Modesto's zoning rules live in Title 10 and the official Zoning Map controls which rules apply to a parcel; each zone (for example R‑1, C‑2, M‑1, Downtown CD) has a stated purpose, a list of permitted/conditional uses and numerical development standards (setbacks, coverage, height). Many projects require Development Plan Review under Chapter 9, and downtown has its own form‑based rules that supersede conflicting standards — always verify the map, the district’s table of permitted uses, and whether your project triggers plan review, conditional use, or special Downtown provisions § 10‑1.402; § 10‑4.102; § 10‑7.501; § 10‑9.1001 .

Source References

  • Title 10 — Zoning Regulations (Modesto) — general and purpose: § 10‑1.101 — 10‑1.103
  • Names of Zones; creation of zones list (R‑1, R‑2, R‑3, P‑O, C‑1, C‑2, C‑3, C‑M, M‑1, M‑2, P‑D, SP, SP‑H, Downtown): § 10‑1.401 — 10‑1.404
  • Establishment of Zones by Map (Zoning Map is part of Title 10): § 10‑1.402 — 10‑1.403
  • Residential development standards (Table 4.1‑1): § 10‑4.102 (Table 4.1‑1)
  • Residential setbacks, two‑story review and accessory building rules: § 10‑4.107 — 10‑4.114; § 10‑4.110
  • Commercial development standards (Table 4.2‑1): § 10‑4.202 (Table 4.2‑1)
  • Industrial zones and standards: § 10‑4.301 — 10‑4.302 (Table 4.3‑1)
  • Downtown (form‑based) zones purpose, administration and exceptions: § 10‑7.501 — 10‑7.505; § 10‑7.502 — 10‑7.503
  • Planned Development (P‑D): § 10‑7.101 — 10‑7.109
  • Specific Plan (SP / SP‑H): § 10‑7.302 — 10‑7.305; § 10‑7.401 — 10‑7.405
  • Airport Zone (A‑P): § 10‑7.201 — 10‑7.202
  • Nonconforming uses, amortization and termination rules: § 10‑3.504 — 10‑3.505
  • Development Plan Review procedures and scope (Chapter 9, Article 10): § 10‑9.1001 — 10‑9.1005 (waivers at § 10‑9.1003)
  • Signs and sign tables: Title 10, Chapter 6 (examples and sign sizes) (see e.g., Table in § 10‑6.1xx)

Related local guidance pages referenced inline above:

Information Gaps

  • Parcel‑specific determinations (exact zone boundary at a property line, how a Downtown Historic Zoning Designation applied pre‑2015) are not provided by the retrieved text — Verify with the jurisdiction (Director interpretation is authorized § 10‑1.403) .
  • The uploaded ordinance excerpts reference many tables and figures (e.g., Figure 7.5‑1) that were not included as images in the retrieved text; consult the City’s zoning map and full Title 10 PDF for those figures (see Zoning Map in the Department office per § 10‑1.402) .

Sources

Retrieved passages

  • Modesto Zoning Code (Chapter 9) High relevance
  • Modesto Zoning Code (Article 5.) Medium relevance
  • Modesto Zoning Code (Article 4.) Medium relevance
  • Modesto Zoning Code (Article 3.) Medium relevance
  • Modesto Zoning Code (Section 10-4.110) Medium relevance
  • Modesto Zoning Code (Article 5.) Medium relevance
  • Modesto Zoning Code (§ 1) Medium relevance
  • Modesto Zoning Code Medium relevance
  • Modesto Zoning Code (Section 10-4.110.) High relevance
  • Modesto Zoning Code (title and) High relevance
  • Modesto Zoning Code (§ 2) Medium relevance
  • Modesto Zoning Code (Article 5.) Medium relevance
  • Modesto Zoning Code (§ 2) Medium relevance
  • Modesto Zoning Code (section contains) Medium relevance

Cited sections

Frequently asked questions

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

You can build uses listed as permitted in the R‑1 district (single‑family dwellings, accessory buildings, certain accessory uses). Numerical standards (setbacks, lot coverage, lot area) are set in the Residential Development Standards (Table 4.1‑1) § 10‑4.102; some projects (notably second stories) may trigger development plan review under § 10‑4.110 and Chapter 9 procedures § 10‑9.1001 — 10‑9.1005 .

What are Modesto setback requirements for houses?

Basic residential building setbacks (front/street‑side 15 ft, interior side typically 5 ft one‑story) and lot coverage percentages are in Table 4.1‑1 and the Residential standards § 10‑4.102. Two‑story portions adjacent to R‑1 have larger side setback rules in § 10‑4.107 — 10‑4.110 .

Do I need Development Plan Review in Modesto?

Many projects do; the Development Plan Review article describes the purpose, scope and procedures § 10‑9.1001 — 10‑9.1005. Certain minor works can be exempt or eligible for a waiver under § 10‑9.1003 (for example small accessory structures under specified size are exempt) .

How does the Downtown form‑based code affect permitted uses?

Downtown zones are form‑based and emphasize building form, frontage types and mixed uses. The Downtown Article supersedes conflicting Title 10 standards within its area, and lists specific building types, frontage types and allowed uses for each Downtown Zone § 10‑7.501 — 10‑7.505. All new downtown development requires Development Plan Review § 10‑7.502 .

Can an existing nonconforming business continue after a rezoning?

Nonconforming uses have specific continuation and termination rules; the Code allows some nonconforming uses to continue, but post‑2022 map amendments may impose a short amortization (six months) unless an extension is granted; exemptions exist for historic resources and certain other categories § 10‑3.504 — 10‑3.505 .

How do I find the exact zone boundary for my parcel?

The Zoning Map on file in the Department is the official source and the Code provides interpretation rules for boundaries (centerlines, waterways, property lines). Where ambiguity remains, the Director interprets the map § 10‑1.402 — 10‑1.403; when in doubt, request a formal determination from the Community & Economic Development Department .

Where are ADU rules in Modesto's code?

ADUs are governed by Chapter 4, Article 5 and the Code references ADU provisions throughout residential tables; consult Chapter 4 and the city's ADU guidance page for the specific ADU standards (see Chapter 4, Article 5) .

If my lot is in an SP or P‑D zone, what rules apply?

An SP zone is implemented by the applicable Specific Plan; the SP text states that once property is rezoned to SP, development must comply with the adopted Specific Plan § 10‑7.302 — 10‑7.305. A P‑D zone is adopted by ordinance with its own conditions; check the P‑D ordinance/resolution for site‑specific standards § 10‑7.101 — 10‑7.109 .

What triggers a Conditional Use Permit versus a Development Plan Review?

Whether a use requires a Conditional Use Permit or Development Plan Review depends on the use tables in each zone and the project's characteristics. Zone use tables and the Chapter 9 review authority table show which approvals are administrative (Director) and which require hearings (Board or Commission) § 10‑9.1001 — 10‑9.104 .

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