Local zoning · Montebello

Montebello — Zoning

Q: What can I build on an R-1 lot in Montebello?

You can build a single‑family detached dwelling , accessory buildings and limited accessory uses set out in the R‑1 permitted uses; mobile homes are allowed subject to site plan review per § 17.14.020 and the development standards in Exhibit 17.10.020 .

Q: What are Montebello's setback and lot‑size requirements for R‑zones?

Numeric setbacks and lot‑size rules are in Exhibit 17.10.020 ; for example R‑1/R‑A lots commonly show minimum lot area ~5,000–6,000 sq. ft., maximum coverage 40%, maximum height 35 ft. — see Exhibit 17.10.020 and Chapter 17.10 for exceptions § 17.10.020 .

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

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Last reviewed: July 2, 2026

Overview

Montebello's zoning code is codified as Title 17 — ZONING and creates the city's base zones (residential, commercial, manufacturing) plus overlays and a Downtown form-based code. The code establishes the official zoning map (the legal map of district boundaries), base development standards (setbacks, lot sizes, heights) and special overlay rules (density modifiers, Brownfield, HOO, Downtown), and makes specific process rules for approvals such as site-plan review and conditional use permits. See the zoning purpose and district establishment in § 17.02.020 and § 17.04.010 .

Before you design or apply: check the official zoning map to confirm the applied zone and any overlays; where the Downtown Code applies it supersedes some Title 17 provisions (see Downtown Code) .

How this page links to other Montebello guidance

For parking rules see the Montebello parking page (first mention): parking.
For numeric development standards used below see the Montebello Development Standards reference.
Design procedures and administrative vs discretionary reviews are summarized on the Montebello Design Review page.
Where overlays are mentioned, consult Montebello Overlay Districts.
Accessory Dwelling Unit (ADU) rules are in Montebello ADUs and codified locally at § 17.10.280 .
The state's adopted code is the California Building Standards Code.
For land-use policy context see Montebello Land Use.

District-by-district breakdown

Below are Montebello's twelve base zones (the code calls them "zones") with purpose, typical permitted uses, key dimensional standards taken from the Municipal Code exhibits, and where the zone typically applies. Where the code gives an exhibit or a chapter, I list the controlling citation.

Note: the legal list of zones and the rule that the zoning map controls location are in § 17.04.010 and § 17.04.030 .

R-A (Residential Agricultural)

Purpose: Provide for single‑family residential and limited agricultural uses; transitional classification for agricultural/open land § 17.12.010 .
Typical permitted uses: single‑family detached dwellings, accessory buildings, limited animal/horsekeeping and home day‑care (see § 17.12.020 for the local list) .
Key dimensional standards (summary from Exhibit): Minimum lot area typically 5,000–6,000 sq. ft., maximum lot coverage 40%, maximum height 35 ft., parking: 2 enclosed spaces per unit (see Exhibit 17.10.020) .
Where it applies: Generally low‑density neighborhoods and fringe/agricultural parcels per the zoning map; unmapped or annexed lands default temporarily to R‑1 until classified § 17.04.070 .

R-1 (One‑family Residential)

Purpose: Protect and stabilize single‑family neighborhoods § 17.14.010 .
Typical permitted uses: Single‑family detached dwellings, mobile homes (with site plan review), accessory structures; limited home day‑care, renting of rooms and signs per code § 17.14.020 .
Key dimensional standards: Minimum lot area (see Exhibit 17.10.020; commonly 5,000–6,000 sq. ft. depending on location), max coverage 40%, max height 35 ft., parking: 2 enclosed spaces per dwelling § 17.10.020 .
Where it applies: Classic single‑family neighborhoods shown on the zoning map § 17.04.030 .

R-2 (Two‑family Residential)

Purpose: Allow duplexes and related medium‑low density residential living (Chapter 17.16).
Typical permitted uses: Detached dwelling units or duplexes; accessory uses same as R‑1 § 17.16.030 .
Key dimensional standards: See Exhibit 17.10.020: max density usually 1 unit per 3,000 sq. ft. (not to exceed 2 units/lot), min lot area 6,000 sq. ft., max coverage 50%, max height 25 ft., parking: 2 enclosed spaces per dwelling .
Where it applies: Streets/blocks designated for duplex‑scale residential on zoning map § 17.04.030 .

R-3 (Multiple‑family Residential)

Purpose: Medium‑density multi‑family housing § 17.18.010 .
Typical permitted uses: Multiple‑family attached or detached dwellings up to the maximum density in Exhibit 17.10.020; accessory uses same as R‑1 § 17.18.030 .
Key dimensional standards: minimum lot area 10,000 sq. ft., max coverage 60%, max height 25 ft. (Exhibit 17.10.020), parking: 2 enclosed spaces per dwelling + 1 visitor per 3 units .
Where it applies: Multi‑family neighborhoods and larger lots in the city per zoning map § 17.04.030 .

R-4 (High‑density Residential)

Purpose: Facilitate high‑density multi‑family development (special rules for density and unit sizes) § 17.20.010 .
Typical permitted uses: High‑density multi‑family dwellings up to Exhibit limits § 17.20.030 .
Key dimensional standards: minimum lot area 20,000 sq. ft. (Exhibit 17.10.020), max coverage 60%, height and unit size minimums specified (unit minimums e.g., 400–1,100 sq. ft. by unit type) § 17.20.020 .
Where it applies: Higher‑intensity residential corridors and parcels identified on the zoning map; also used as the baseline for the HOO overlay § 17.47.060 .

C-R (Commercial Restricted), C-1 (Neighborhood Commercial), C-2 (General Commercial), C-3 (Heavy Commercial), C-M (Heavy commercial—limited industrial)

Purpose (summary): Commercial zones govern retail, services and some commercial‑industrial operations scaled to neighborhood (C‑1) through heavy commercial/manufacturing adjacency (C‑3, C‑M) § 17.22.010 .
Typical permitted uses: The code organizes retail/service/office uses by zone and refers to an Index of Permitted Uses (see Appendix A/Table D.3 under Downtown Code for downtown parcels). Specific use tables should be consulted for things like restaurants, liquor sales, repair uses — conditional uses are detailed in the Index and Chapter 17.70 (Conditional Use Permits) .
Key dimensional standards (Exhibit 17.22.020 summary):
- C-R: min lot 5,000 sq. ft., min width 50 ft., max height 35 ft (reduced adjacent to R‑1), FAR 0.5:1, lot coverage 60%.
- C-1: min lot 5,000 sq. ft., width 50 ft., FAR 1:1, coverage unlimited except yards.
- C-2: min lot 2,500 sq. ft., width 25 ft., FAR 3:1.
- C-M: min lot 7,500 sq. ft., FAR 2:1. See Exhibit 17.22.020 for the table and references § 17.22.020 .
Where it applies: Commercial strips, centers and nodes shown on the zoning map; protections apply where commercial abuts residential (setback/height transitions) .

M-1 (Light Manufacturing) and M-2 (Heavy Manufacturing)

Purpose: Provide for manufacturing, warehousing, distribution and industrial uses of increasing intensity (M‑1 lighter, M‑2 heavier) § 17.04.010 lists the manufacturing zones .
Typical permitted uses: The code groups manufacturing uses by intensity; exact permitted use lists for M‑1 and M‑2 (e.g., light assembly, fabrication, warehousing, truck yards subject to overlay rules) are in the code's use index and chapters that govern special uses such as trucking; note the Brownfield overlay that specifically allows heavy trucking uses in a defined area (see § 17.49.010) .
Key dimensional/operational standards: The code defers to the underlying zone standards for setbacks/coverage but includes special screening, distance, landscaping and noise limitations for industrial operations and for heavy trucking uses in the Brownfield overlay § 17.49 .
Where it applies: Industrial parks, employment/warehousing parcels mapped in the zoning atlas.

Downtown Montebello Specific Plan Code (Chapter 17.040.110 — Downtown Code)

Purpose: A form‑based code for the downtown area that replaces certain Title 17 provisions for parcels inside the Downtown boundaries; focuses on building placement, frontage, height and public‑realm standards rather than conventional FAR/density § 17.040.110 and Downtown Code text (Table D.1/D.3) .
Typical permitted uses and design rules: Uses and allowed frontages are listed in Table D.3 (within the Downtown Code boundary); the Downtown Code governs allowable street frontages, shopfront frontage overlays, and allows different permit paths (ministerial vs discretionary) § 4.2/4.6 of the Downtown Code .
Where it applies: Only to parcels inside the Downtown Code boundary/Regulating Plan Figure D.4; where the Downtown Code conflicts with general Title 17 provisions, the Downtown Code prevails § 4.1.C .

Overlays & Modifiers (important ones)

High Opportunity Overlay (HOO) — allows mixed residential/mixed‑use development on specific parcels, sets minimum 20 and maximum 80 du/acre and requires 20% affordable units for applicable projects; uses are the underlying zone plus multi‑family dwellings; development standards default to the R‑4 zone § 17.47.030–060 .
Density Overlay (D) — modifies maximum dwelling units per acre where shown (e.g., R‑3‑D‑14 means 14 du/acre) and supersedes density in the underlying zone § 17.48.020–030 .
Brownfield Overlay (BF) — a geographically‑limited overlay that allows certain heavy trucking uses with strict screening, setbacks, and operational controls; mapped and implemented by exhibit and ordinance § 17.49.010–020 .

Quick reference table — decision‑relevant standards

District	Typical max density / unit rule	Min lot area	Max coverage	Max height	Parking (typical)	Code Reference
R-A	1 dwelling/unit per lot	5,000–6,000 sq. ft.	40%	35 ft.	2 enclosed spaces/unit	Exhibit 17.10.020; § 17.12.010–020
R-1	1 dwelling/unit per lot	5,000–6,000 sq. ft.	40%	35 ft.	2 enclosed spaces/unit	Exhibit 17.10.020; § 17.14.020
R-2	1 per 3,000 sq. ft. (≤2 units/lot)	6,000 sq. ft.	50%	25 ft.	2 enclosed spaces/unit	Exhibit 17.10.020; § 17.16.030
R-3	1 per 3,000 sq. ft.	10,000 sq. ft.	60%	25 ft.	2 enclosed/unit + visitor	Exhibit 17.10.020; § 17.18.030
R-4	Higher density (see Exhibit)	20,000 sq. ft.	60%	25 ft.	2 enclosed/unit + visitor	Exhibit 17.10.020; § 17.20.030
C-1 / C-2 / C-M	N/A (use‑based)	2,500–7,500 sq. ft.	unlimited except yards	35 ft. (reduced next to R‑1)	See Chapter 17.52 and parking page	Exhibit 17.22.020; § 17.22.020
M-1 / M-2	Industrial uses per index	Varies by use	Varies	Varies	Industrial parking/loading rules apply	Zoning list § 17.04.010; Brownfield overlay § 17.49

(For full numeric details, see Exhibit 17.10.020 for residential and Exhibit 17.22.020 for commercial standards; zoning map controls parcel classification § 17.04.030) .

Practical guidance & interpretation (synthesis)

Start by confirming the parcel's zone on the legal zoning map; the map is part of Title 17 and is the controlling source for boundaries § 17.04.030–050 .
If your parcel sits inside the Downtown Code boundary, use the Downtown Code's Table D.3 and development frontages rather than the generic Title 17 use tables — the Downtown Code expressly replaces Title 17 provisions within its boundary § 4.1.C .
For ADUs, Montebello permits accessory dwelling units in R‑zones as a matter of right (subject to the standards in § 17.10.280 and the residential exhibits) — follow the ADU chapter and the city's ADU page for state‑law adjustments § 17.10.280 .
Where an overlay (e.g., HOO, D, BF) applies, the overlay can modify density, allowable uses, or impose additional conditions and may supersede the base zone for developed projects; read the overlay chapter carefully (§ 17.47, § 17.48, § 17.49) .
Expect design and site plan review for multi‑unit or larger commercial projects: site plan review is required for residential projects creating three or more units and for commercial/industrial projects 5,000 sq. ft. or more § 17.74.030–070 .
Use the Montebello parking and Development Standards pages to assemble parking and setback evidence for plan check.

Checklist

Confirm parcel zone(s) on the official zoning map and check for overlays; map rules and boundary uncertainty rules are in § 17.04.030–060 .
Confirm permitted use(s) in the Index of Permitted Uses or the Downtown Code Table D.3 (if inside Downtown) § 4.6 (Downtown) and Chapter references § 17.14–17.22 as relevant .
Pull the numeric development standards (Exhibit 17.10.020 or 17.22.020) and compare to proposed lot/unit plan § 17.10.020, § 17.22.020 .
Check Overlay chapters for additional requirements: HOO § 17.47, Density § 17.48, Brownfield § 17.49 .
Confirm whether Site Plan Review or discretionary approvals (CUP, variance) are required § 17.74 and Chapter 17.70 .
For ADUs, confirm compliance with § 17.10.280 and state ADU law (see Montebello ADU page and California ADU law) .
Prepare screening/landscaping/lighting plans where commercial/industrial abuts residential (industrial screening rules and Brownfield screening requirements) § 17.49 and screening exhibits .

Risks & Ambiguities

Issue	Why it matters	What to verify
Overlay supersession (Downtown / HOO)	Overlays may displace or modify base zone rules; applying the wrong standard can derail approvals	Confirm whether the parcel is inside the Downtown Code boundary § 4.1.C or an overlay like HOO § 17.47
Parcel boundary vs zoning map scale	Map lines shown "approximately" — a property line split by a zone boundary can create differing standards on one lot § 17.04.060	Verify boundary using the official GIS/zoning map; ask Planning staff for an official determination
Permitted‑use detail for industrial uses	The code's use index and special chapters control whether a particular industrial activity is allowed (e.g., truck terminals)	Check Index of Permitted Uses, Chapter 17.37/17.49 for trucking rules and Brownfield § 17.49.010
Unit counts vs density overlay symbols (DD, D)	Density modifiers (e.g., R‑3‑D‑14 or R‑3‑DD‑25) change maximum units/acre and govern entitlement calculations § 17.48; § 17.47.050	Verify the zoning map symbol (DD / D) for the parcel and use the overlay rules when calculating allowable units
ADU compliance vs state law changes	Local ADU rules must follow state law but local code may add compatible requirements § 17.10.280	Confirm current local ADU rules and recent state ADU law updates (see Montebello ADU and California ADU law pages)
Non‑conforming uses and permitted continuations	Existing permits, variances and conditional uses may remain in force and affect what is allowed § 17.02.060	Verify chain of title for prior entitlements and applicable conditions; consult Chapter 17.54 for nonconforming rules

Plain‑English summary

Montebello's Title 17 divides the city into specific zones (from R‑A through M‑2) with numeric development standards in Exhibit tables and special overlays (like the Downtown Code, HOO, density and Brownfield overlays) that can change what you can build on a parcel; always check the official zoning map and applicable overlay chapter first because overlays and the Downtown Code can supersede base rules § 17.04.030; § 17.47; § 17.040.110 .

Source References

Title 17 — ZONING (Montebello Municipal Code), purpose and application § 17.02.020
Zoning districts established and map rules § 17.04.010, § 17.04.030–060
Residential development standards, Exhibit 17.10.020 and R‑zone chapters (Chapter 17.10; Chapter 17.12 R‑A; 17.14 R‑1; 17.16 R‑2; 17.18 R‑3; 17.20 R‑4)
Commercial development standards Exhibit 17.22.020 and Chapter 17.22 § 17.22.020
Site plan review and when required § 17.74.030–070
HOO (High Opportunity Overlay) rules including density and affordability § 17.47.030–080
Density overlay § 17.48.010–040 and Brownfield overlay § 17.49.010–020
ADU rules (local) § 17.10.280
Downtown Montebello Specific Plan / Downtown Code (Chapter 17.040.110, Tables D.1–D.3)

Sources

Retrieved passages

Montebello Zoning Code (Chapter 17.54.040) High relevance
Montebello Zoning Code (title by) High relevance
Montebello Zoning Code (§ 4) High relevance
Montebello Zoning Code (Section 17.79.040) High relevance
Montebello Zoning Code (§ 3) Medium relevance
CFC § 3 (Chapter 17.62) Medium relevance
Montebello Zoning Code (Title 17) Medium relevance
Montebello Zoning Code (§ 9211) Medium relevance
Montebello Zoning Code (section 17.08.245) High relevance
Montebello Zoning Code (Section 17.10.280) High relevance
Montebello Zoning Code (§ 9255) High relevance
Montebello Zoning Code (§ 9233.2) Medium relevance
CBC § 9210.7 (Chapter 17.54) Medium relevance
Montebello Zoning Code (section shall) Medium relevance
Montebello Zoning Code (§ 9234.3) Medium relevance
Montebello Zoning Code (Title 17) Medium relevance

Cited sections

Official Montebello code library

Frequently asked questions

What can I build on an R-1 lot in Montebello?

You can build a single‑family detached dwelling, accessory buildings and limited accessory uses set out in the R‑1 permitted uses; mobile homes are allowed subject to site plan review per § 17.14.020 and the development standards in Exhibit 17.10.020 .

What are Montebello's setback and lot‑size requirements for R‑zones?

Numeric setbacks and lot‑size rules are in Exhibit 17.10.020; for example R‑1/R‑A lots commonly show minimum lot area ~5,000–6,000 sq. ft., maximum coverage 40%, maximum height 35 ft. — see Exhibit 17.10.020 and Chapter 17.10 for exceptions § 17.10.020 .

Do I need design review or site plan review for a multi‑unit project?

Yes; a site plan review is required for residential projects resulting in three or more dwelling units and for commercial/industrial projects of 5,000 sq. ft. or more, processed per § 17.74 (site plan review) and possibly subject to Planning Commission review § 17.74.030–070 .

How does an overlay like HOO or the Density overlay affect my parcel?

An overlay can change allowable density, uses or standards: HOO sets minimum 20 du/acre and max 80 du/acre for designated parcels and requires 20% affordable units for HOO developments, and its development standards reference the R‑4 zone § 17.47.050–060; a D (density) symbol (e.g., R‑3‑D‑14) directly sets dwelling units per acre and supersedes the underlying zone § 17.48.020–030 .

Where do I find the official zoning map and what if a boundary is unclear?

The zoning map is part of Title 17 and is legally part of the code; where a boundary is uncertain the code provides rules — e.g., boundaries shown following street lines or lot lines control; see § 17.04.030–060 for the map and uncertainty rules .

Are Accessory Dwelling Units (ADUs) allowed in Montebello and where are the rules?

Yes — ADUs are permitted in R‑zones subject to the standards in § 17.10.280; Montebello implements ADU standards consistent with state law but also ties ADUs to local lot size/setback/coverage rules in Exhibit 17.10.020 .

What special rules apply to heavy trucking uses in Montebello?

Heavy trucking uses are generally restricted but are specifically allowed with conditions in the Brownfield overlay (a mapped ~55‑acre area) with screening, setback, loading location, and operational restrictions; see § 17.49.010–070 for the Brownfield rules .

If my lot straddles two zones, how are rules applied?

The code instructs that where a zone boundary divides a lot, the scale on the zoning map is used to determine the boundary; when in doubt consult the Planning Division — see the uncertainty rules in § 17.04.060 .

Do I follow the Downtown Code or Title 17 for downtown parcels?

If your parcel sits inside the Downtown Code boundary, the Downtown Code (Chapter 17.040.110) provides the controlling development and land‑use rules and will prevail over prior Title 17 rules where there is conflict § 4.1.C .

Where are parking requirements specified?

Parking is handled in the zoning code and local parking chapter references; see the Montebello parking guidance and Chapter 17.52 (and related site plan/landscaping screening rules) for required spaces, screening and maintenance § 17.52 and screening exhibits § 17.52.160–170 .

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