Merced Zoning, Planning & Building Codes

Last reviewed: July 3, 2026

Overview

Merced’s zoning law is codified in Title 20 — ZONING of the Merced Municipal Code; it implements the General Plan and is administered by the City Council, Planning Commission, Site Plan Review Committee, and the Director of Development Services (see § 20.02.010 and § 20.02.040) . Title 20 is organized as a conventional zoning ordinance with Part 1 (purpose/applicability), Part 2 (zoning districts and standards), and later chapters that cover permits, review procedures, parking, and special districts (see the Table of Contents in Title 20) § 20.02.010 . This page orients developers, owners and residents to where the rules live, what the main district families and citywide standards are, how discretionary vs. ministerial review works, and how state housing laws (notably ADU rules) plug into the local code.

How Merced’s code is organized

• Title and purpose: the ordinance is adopted as the “Merced City Zoning Ordinance” in Title 20, establishing authority and purpose § 20.02.010–20.02.020 .
• Administration and reviewers: the Zoning Ordinance names the decision-makers — City Council, Planning Commission, Site Plan Review Committee, and the Director of Development Services — and points to the administrative chapters for delegation § 20.02.040 .
• Structure by part and chapters: District standards and permitted uses live in Part 2 (e.g., residential in Chapter 20.08, commercial in Chapter 20.10, planned development in Chapter 20.20, public/agricultural in Chapter 20.18) and procedural topics live in later chapters (permit application and review in Chapter 20.66, site-plan / design-type reviews in Chapter 20.68, parking in Chapter 20.38) § 20.08.010; § 20.10.030; § 20.20.020; § 20.18.030; § 20.66 .

(First mentions: this page links the city’s zoning menu at Merced Zoning and related topic pages so you can jump directly to practical pages: Merced Zoning, Merced Land Use, and the subject-specific guides below.)

Zoning district families

Merced organizes base zones into standard families; the code names and purposes are explicit in the residential and planned-development chapters.

• Residential districts (Chapter 20.08): R-R (Rural Residential), R-1 (Low Density Residential, with subzones R-1-20, R-1-10, R-1-6, R-1-5), R-2 (Low–Medium Density Residential), R-3 (Medium Density Residential, subzones R-3-1.5 and R-3-2), R-4 (High Density Residential), and R-MH (Mobile Home Park). Each district purpose and permitted uses are set out in § 20.08.010–20.08.020 .
• Commercial districts (Chapter 20.10): downtown/core and neighborhood commercial designations appear throughout the commercial chapter (e.g., C-C downtown commercial, C-N, C-T, C-G, and business/office B-P) with tailored use lists and downtown-specific rules § 20.10.030 . The downtown core has its own “D‑COR” rules in the downtown chapter and special parking/location rules for surface lots § 20.14 .
• Planned development and project zones: P‑D (Planned Development) and RP‑D (Residential Planned Development) allow customized standards and use-mixes through an approved Site Utilization Plan; minimum project sizes and submittal procedures are in § 20.20.020 .
• Public, Open Space and Agricultural zones: P‑OS, P‑F, P‑PK, AG and related tables set minimum lot areas, setbacks and special conditions in § 20.18.030 and its tables .
• Overlay and specialty zones: the code includes overlays such as the Urban Residential Overlay (see § 20.22.040 referenced in the small‑lot chapter) and historic/resource protections that interact with other chapters (historic preservation rules cross‑refer to Chapter 17.54) § 20.22.040; 17.54 .

(First mentions: I’ve linked the overlays guide at Merced Overlay Districts and historic/heritage protections at Merced Historic Preservation.)

Citywide development standards (high-level)

The ordinance sets district-level numeric standards in tables and cross-references other chapters for measurement and exceptions.

• Where the standards live: base standards for each district are shown in the district chapters’ tables (e.g., residential tables and rules in § 20.08.030 and commercial tables in § 20.10.030) . For measurement rules see Chapter 20.26 (Setback Measurement and Projections) and for projection/encroachment rules consult that chapter as well § 20.26 .
• Typical residential numbers (representative — check the table for the specific subzone): front setback 10 ft, garage/front setback 18 ft, interior side 8 ft, street side 5 ft, rear 5–6 ft, maximum height 35 ft (generally 2 stories), and 60% lot coverage for single‑family in many R subzones — all recorded in the residential development standards tables and explanatory text § 20.08.030 . (Exceptions and variances: the Planning Commission and Director may approve adjustments in limited situations; see the exceptions and minor‑use permit rules in the residential chapter) § 20.08.030(E) .
• Lot coverage / FAR: Merced uses lot‑coverage and building height numeric controls in the individual district tables (see the public/agricultural table and residential tables) rather than a single citywide FAR schedule § 20.18.030; § 20.08.030 .
• Parking: off‑street parking rates, location rules, and loading standards are in Chapter 20.38 (Parking and Loading); the residential chapter specifically cross‑references parking requirements and includes special rules for parking in setbacks in § 20.08.030(F) and parking for small‑lot projects in the small‑lot chapter § 20.38; § 20.08.030(F); § 20.40.050(B) . (First mention link: Merced Parking.)
• Design/detail requirements: downtown and special districts include façade, landscaping, screening and parking‑buffer rules; see Downtown standards (e.g., parking location, buffers and façade treatments) in § 20.14 and other district-specific text § 20.14 . (First mention link: Merced Development Standards.)

Design review and discretionary controls

• Discretionary vs. ministerial review: the ordinance sets out review authorities and distinguishes ministerial permits from discretionary approvals; for example, ADUs are processed ministerially when they meet the chapter’s rules § 20.42.020(A) . Broader projects may require Site Plan Review, Conditional Use Permits, Minor Use Permits, Planning Commission hearings, or City Council action depending on the permit type and district; authority and procedures are in § 20.02.040 and the permit chapters § 20.66; § 20.68 . (First mention link: Merced Design Review.)
• Site Plan Review and downtown/site‑specific controls: some outdoor operations and temporary uses in the downtown C‑C require a Site Plan Review Permit (see the downtown and commercial development sections) § 20.10.030(B); § 20.68.050 .
• Design guidance and PD process: the P‑D/RP‑D process requires a Preliminary and Final Site Utilization Plan; planned developments are intended to create customized standards and public benefits and go through the application process in § 20.20.020 and Chapter 20.66 for submittal and hearings § 20.20.020; § 20.66 .

Specific plans & overlays (city‑level special areas)

• Planned Development (P‑D / RP‑D): allows deviations from base standards through a site utilization plan and council approval; minimum sizes are described in § 20.20.020(D) and submittal materials and pre‑application processes are spelled out in § 20.20.020(E–F) .
• Small‑lot single‑family and other special project chapters: Chapter 20.40 governs Small Lot Single‑Family Homes with specific design and parking rules and cross‑references the Urban Residential Overlay (see § 20.40.050 and § 20.22.040) .
• Downtown and other area standards: downtown has a distinct development standard chapter (Downtown/D‑COR), specifying parking placement, façade treatments, and allowed temporary warehouse uses under strict conditions § 20.14; § 20.10.030(D) .
• Overlays and conditional zoning: overlay zones and conditional zoning allow the City to add conditions on annexations and rezones and to require project‑specific conditions (see Chapter 20.78 on conditional zoning and the overlay references in Parts 2 and 3) § 20.78.020–050; § 20.22.040 . (First mention link: Merced Overlay Districts.)

(First mentions: signage, historic, landscaping and nonconforming links: Merced Signage, Merced Historic Preservation, Merced Landscaping and Screening, Merced Nonconforming Uses.)

Building permits & the review pathway

• Start with a pre‑application and check the applicable district standards and overlay constraints: the P‑D chapter explicitly encourages a pre‑application conference with the Planning Division before filing § 20.20.020(E) .
• Ministerial versus discretionary: ministerial permits (no public hearing) are required for projects that meet objective standards (ADUs per § 20.42.020(A)), while discretionary approvals (Site Plan Review, Conditional Use Permit, Rezone, Variance) require public notice/hearing under the appropriate permit chapter § 20.42.020; § 20.66 . (For review procedures, see Chapter 20.66 and 20.68.)
• Building code and inspections: the Merced standards cross‑reference the California Building Code for structural and separation requirements (see notes in the public/agricultural table that reference the California Building Code) § 20.18.030 (notes referencing California Building Code) . (First mention link: California Building Standards Code.)
• Typical sequence: zoning clearance → site plan / design review (if required) → building permit application (plans checked against Title 20 and Title 17/California codes) → inspections → certificate of occupancy. The zoning ordinance clarifies that no structure may be built, occupied, or modified except in accordance with the zoning ordinance § 20.02.050(C) .

(First mention link to the code page: Merced Zoning. Also see Merced Variances and Exceptions for the relief paths.)

State housing law in Merced

Merced’s code explicitly recognizes and accommodates state ADU law and sets local ADU rules that are ministarial when consistent with state law.

• ADUs and JADUs: Chapter 20.42 is Merced’s ADU chapter. It states that ADU standards are intended to conform with Government Code §§ 65852.2 and 65852.22, applies to all residentially‑zoned parcels, and requires ministerial approval where the ADU meets chapter requirements § 20.42.010; § 20.42.020(A–B) . (First mention link: Merced ADUs.) The chapter also incorporates state timing rules (60‑day action deadline) and prohibits conditioning ministerial ADU approval on correcting unrelated nonconforming conditions § 20.42.020(B–C) .
• SB 9 / lot splits and ministerial duplex‑lot rules: the Title 20 materials retrieved do not include a local SB 9‑specific ordinance or local ministerial lot‑split (parcels‑split) rules in the excerpts I reviewed. Verify with the Planning Division or the most recent code update for a local SB 9 implementation (Not found in retrieved materials) (verify with jurisdiction).
• Density bonus and inclusionary/rent controls: I did not find a density‑bonus implementation section or rent‑control ordinance text in the retrieved Title 20 excerpts; density bonus is often handled in a housing element or a dedicated chapter — not located in the retrieved materials (Not found in retrieved materials) (verify with jurisdiction).
• Interaction with local nonconforming rules: ADU approval provisions explicitly limit the city’s ability to require correction of zoning nonconformities as a condition to ADU ministerial approval, consistent with state law; see § 20.42.020(C) which cross‑references Chapter 20.52 (Nonconforming Parcels/Uses) where relevant § 20.42.020(C); Chapter 20.52 .
• Practical note: Merced updated its ADU chapter in 2023 (Ord. No. 2555) to align with state law — check the local ADU page and Chapter 20.42 for the exact local numeric and submittal rules (e.g., ministerial timing, exceptions) § 20.42.010–020 .

(First mention link: For statewide ADU rules and limits, see California ADU law and the state handbook. For state housing law context, see California housing laws.)

Practical orientation — quick checklist for common projects

• To confirm a project’s allowed uses and numeric standards: check the district table in the relevant chapter (e.g., Chapter 20.08 for residential; Chapter 20.10 for commercial) § 20.08.010; § 20.10.030 .
• If your project meets objective ADU rules, expect ministerial approval within 60 days per ADU chapter § 20.42.020(B) .
• If you are seeking a deviation (reduced setbacks, variance, PD standards), expect discretionary review: pre‑application → application to Planning Division (Chapter 20.66) → Planning Commission hearing or Council action as required § 20.20.020(E–F); § 20.66 .
• Parking and loading: consult Chapter 20.38 early — the residential chapter explicitly cross‑references it and contains rules about parking in setbacks for R‑1/R‑2 vs. R‑3/R‑4 districts § 20.08.030(F); Chapter 20.38 . (First mention link: Merced Parking.)
• For downtown projects, read the Downtown Development Standards (setbacks, parking placement, façade/landscape buffering) — these are stricter and include specific buffering/screening rules § 20.14 . (First mention link: Merced Development Standards.)

Information gaps / items to verify with the City

• Local implementation of SB 9 (ministerial lot splits / two‑unit ministerial approvals) is not present in the retrieved Title 20 excerpts; check Planning Division or current ordinance supplements (Not found in retrieved materials).
• A local density‑bonus implementation chapter or explicit rent‑control provisions did not appear in the retrieved Title 20 excerpts; verify via the Planning Division or housing element if you need a definitive local rule (Not found in retrieved materials).
• For up‑to‑date numeric changes or recent ordinance amendments (post‑2023), verify the printed Title 20 or the City’s Zoning Ordinance update page — Title 20 has been amended several times by ordinance numbers cited in the chapters you’ll review § 20.02.010 (editor’s note on amendments) .

Source References

• Merced Municipal Code — Title 20, ZONING (table of contents and Part 1 enactment & applicability), including § 20.02.010–20.02.050 and editorial notes .
• Merced Municipal Code — Residential Districts, Chapter 20.08 (district list, purposes, and development standards) § 20.08.010–20.08.030 .
• Merced Municipal Code — Commercial Districts, Chapter 20.10 and Downtown development rules § 20.10.030; § 20.14 .
• Merced Municipal Code — Planned Development, Chapter 20.20 (P‑D and RP‑D rules, site utilization plan requirements) § 20.20.020 .
• Merced Municipal Code — Small Lot Single‑Family Homes, Chapter 20.40 (standards, parking for small‑lot projects) § 20.40.050 .
• Merced Municipal Code — ADUs, Chapter 20.42 (ministerial review, timing, nonconforming conditions) § 20.42.010–020 .
• Merced Municipal Code — Public/AG district standards and notes referencing the California Building Code, Chapter 20.18 § 20.18.030 .
• Merced Municipal Code — Conditional Zoning, Chapter 20.78 § 20.78.020–050 .
• Cross references and procedural chapters: Chapter 20.66 (Permit Application and Review) and Chapter 20.68 (Site Plan Review references) § 20.66; § 20.68 .