Local zoning · Brea

Brea — Development Standards

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

Ask a question free See coverage

Last reviewed: July 1, 2026

Overview

This page distills the dimensional “what and where” from Brea’s zoning code so you can see, at a glance, what lot size, setbacks, height, coverage, density, and FAR rules apply in each local district. It complements the citywide zoning map and land use policies by focusing strictly on Title 20 (Zoning) development standards and how they differ district by district.

When you plan a project, confirm parking in Brea’s dedicated parking rules, and whether your proposal needs design review or sits in any special overlay districts.

Citywide notes you’ll see repeated in the districts below

  • Parking and loading are controlled in one place and cross‑referenced in most districts: see § 20.08.040 (then check the parking page for practical interpretation).
  • Many nonresidential districts borrow landscaping/fence maintenance provisions from the C‑G chapter; when you see a cross‑reference to “§ 20.236.040.M,” that’s the same citywide landscaping and screening standard.
  • Where you see “Plan Review per § 20.408.040,” that’s Brea’s project‑level design/plan review procedure, summarized on our design review page.

Residential Districts (base)

R-1 Single Family Residential (Chapter 20.208)

  • Purpose and uses: Detached single‑family homes with room for conventional yards.
  • Lot size and density: 7,200 sq ft min lot; one dwelling per lot, with allowances for ADUs and SB 9 two‑unit developments per Chapters 20.52 and 20.56 (§ 20.208.040.A, C).
  • Key setbacks and height:
    • Front: 25 ft minimum; neighborhood‑unit frontage may average 25 ft, but no less than 20 ft on any lot; garages facing the street must be 25 ft back (§ 20.208.040.E.1.a, d–e).
    • Side: 5 ft each; corner side 20 ft (§ 20.208.040.E.2.a–b).
    • Rear: 25 ft; the main building may project to 10 ft from the rear line (§ 20.208.040.E.3.a).
    • Height: 35 ft max (detached accessory structures 18 ft) (§ 20.208.040.D).
  • Lot coverage: 35% max (§ 20.208.040.J).
  • Where it applies: Citywide where mapped R‑1 on the zoning map.

R-1 (5,000) Small-Lot Single Family (Chapter 20.212)

  • Purpose and uses: Smaller-lot single‑family neighborhoods with tailored setbacks.
  • Lot size and density: 5,000 sq ft min lot; one dwelling per lot (ADU/JADU allowed per Chapter 20.52) (§ 20.212.040.A, C).
  • Key setbacks and height:
    • Front: 15 ft min; garages facing street 23 ft min (§ 20.212.040.E.1.a, d).
    • Side: 5 ft each; zero‑lot‑line on one side allowed if conditions met; corner side may be 10 ft (§ 20.212.040.E.2).
    • Rear: 10 ft min (§ 20.212.040.E.3.a).
    • Height: 35 ft max (accessory structures 18 ft) (§ 20.212.040.D).
  • Lot coverage: 50% max (§ 20.212.040.J).
  • Where it applies: Areas mapped R‑1 (5,000).

R-2 Two‑Family Residential (Chapter 20.216)

  • Purpose and uses: Duplexes and small‑scale multi‑unit forms consistent with low‑density fabric.
  • Lot size and density: 9,000 sq ft min lot (single‑family lots may be 4,500 sq ft when created by split/subdivision) (§ 20.216.040.A).
  • Key setbacks and height:
    • Front: 23 ft min; on small single‑family lots: 15 ft (§ 20.216.040.E.1.a).
    • Side: 5 ft each; limited zero‑lot‑line pathway similar to R‑1(5,000), corner side typically 15 ft (§ 20.216.040.E.2).
    • Rear: 10 ft min (15 ft on small single‑family lots) (§ 20.216.040.E.3.a).
    • Height: Not separately specified in this chapter; typical residential maximums and separation rules apply; see building separation standards (§ 20.216.040.H).
  • Lot coverage: 50% max (§ 20.216.040.J).
  • Where it applies: Areas mapped R‑2.

R-3 Multiple Family Residential (Chapter 20.220)

  • Purpose and uses: Apartments and higher‑density residential types with adjacency step‑downs.
  • Lot size and density: 10,000 sq ft min lot; min land area per dwelling: 1,750 sq ft/du (§ 20.220.040.A–B).
  • Height with residential adjacency step‑down:
    • 35 ft when within 100 ft of R‑1, R1‑H, R‑1(5,000), R‑2, or HR; 50 ft from 100–200 ft; 75 ft beyond 200 ft (§ 20.220.040.C.1).
  • Setbacks and coverage:
    • Front: 15 ft min; cul‑de‑sac fronts may be 10 ft; garages facing street 23 ft (§ 20.220.040.D.1, f).
    • Rear: 15 ft min, with increases if building exceeds 35 ft (§ 20.220.040.D.3).
    • Coverage: 60% lot coverage max; maintain a contiguous open area within uncovered space (§ 20.220.040.I).
  • Plan review: Multi‑family often triggers plan review (§ 20.220.050 and § 20.408.040).
  • Where it applies: Areas mapped R‑3.

R1‑H Hillside Single Family (Chapter 20.200) and HR Hillside Residential (Chapter 20.206)

  • Purpose and uses: Tailored for slopes, grading control, and visual scale protections.
  • R1‑H highlights:
    • R‑1 rules apply unless modified; hillside‑based frontage/lot‑area correlations; min dwelling size 1,800 sq ft; specific parking and access rules (§ 20.200.040).
  • HR highlights (applies to hillside master plans/pads):
    • Detached pad setbacks scale by pad size: fronts 20/30/40 ft, sides 7.5/7.5/10 ft, rears 20/20/30 ft (§ 20.206.170.D).
    • Heights: detached up to 35 ft; attached hillside product up to 45 ft; attached front/side/rear setbacks typically 20/15/20 ft (§ 20.206.170.F; § 20.206.180.C–D).
    • FAR: Set in § 20.206.060.D (numeric values not found in retrieved materials).
  • Where it applies: Sloped areas mapped R1‑H or HR citywide.

Mixed‑Use Districts

MU‑I Mixed‑Use I (Table 2‑3 and 2‑6; § 20.258.020)

  • Purpose and uses: High‑intensity mixed‑use with prominent corridors (Ash, Birch, Brea Blvd, Imperial).
  • Density and FAR: 12.1–50 du/ac; nonresidential FAR 3.0 (§ Table 2‑3).
  • Setbacks and height (mixed/nonresidential projects):
    • Corridor frontage often has “no front setback” to support active edges; interior sides “none/10 ft” depending on residential adjacency; max height 100 ft (55 ft cap along certain frontages with subterranean parking) (§ Table 2‑3).
  • Stand‑alone residential in MU‑I: see Table 2‑6 (e.g., side 5 ft, street side 15 ft, and private/common open space minimums).

MU‑II Mixed‑Use II (Table 2‑4 and 2‑7; § 20.258.020)

  • Density and FAR: 6.1–40 du/ac; nonresidential FAR 2.0 (§ Tables 2‑4, 2‑7).
  • Setbacks and height:
    • Mixed/nonresidential projects: many edges have “none” setbacks except where abutting residential; max height 60 ft; special 15‑ft parking setbacks on front/street sides (§ Table 2‑4).
    • Stand‑alone residential: Front 15 ft; side 5 ft; street side 15 ft; rear 15–20 ft; 60‑ft height cap (§ Table 2‑7).

MU‑III Mixed‑Use III (Table 2‑5 and 2‑8; § 20.258.020)

  • Density and FAR: 6.1–18 du/ac; nonresidential FAR 1.0 (§ Table 2‑5).
  • Setbacks and height:
    • Corridor frontages on Brea Blvd/Imperial regulate build‑to and prohibit ground‑level parking at the corridor edge; interior adjacencies have 5–10 ft averages; max height 35 ft (§ Table 2‑5).
    • Stand‑alone residential: accessory/landscaping/lighting/wall references consolidated in Table 2‑8.
  • Citywide MU notes: Mixed‑use design and parcel consolidation incentives live in § 20.258.030 (e.g., up to 10% extra height/coverage with consolidation).

Commercial Districts

C‑G General Commercial (Chapter 20.236)

  • Purpose and uses: Broad retail/service/highway‑related.
  • Setbacks/height: Front 10 ft; 35‑ft height; 40‑ft buffers to residential with a 6–7 ft wall (§ 20.236.040.C–D).
  • Where it applies: Commercial corridors and nodes identified on the zoning map.

C‑P Commercial, Administrative & Professional (Chapter 20.224)

  • Purpose and uses: Offices and supporting services.
  • Key standards: 30‑ft building height; 15‑ft front/corner yards; added setback where abutting residential (10 ft + 1 ft per ft over 10 ft height) (§ 20.224.040.C–D).

C‑C Major Shopping Center (Chapter 20.232)

  • Purpose and uses: Large shopping centers.
  • Key standards: 75‑ft height; setbacks are site‑planned, but never within 100 ft of a residential zone line (§ 20.232.030.C–D).

C‑RC Commercial Recreation (Chapter 20.244)

  • Purpose and uses: Commercial recreation in suited locations.
  • Key standards: 35‑ft height; 35‑ft front yard; 100‑ft to any residential boundary (§ 20.244.040.C–D).

Industrial and Employment Districts

M‑P Planned Industrial (Chapter 20.248)

  • Purpose and uses: Master‑planned employment campuses.
  • Key standards: 5‑acre min parcel; 60‑ft height; 50‑ft yards on arterials or local/residential edges (landscaped front 20 ft); 20‑ft yards on non‑residential locals (§ 20.248.040).

C‑M Commercial/Industrial (Chapter 20.240)

  • Purpose and uses: Hybrid employment/service.
  • Key standards: 20,000 sq ft min lot; 35‑ft height; uses M‑P yard rules by reference; coverage 50% max (§ 20.240.060).

M‑1 Light Industrial (Chapter 20.252)

  • Purpose and uses: Manufacturing and related uses with buffers to neighborhoods.
  • Key standards: 60‑ft height; 50‑ft yards at arterials/local‑residential edges; 10‑ft yards on other local streets; 100‑ft side/rear adjacent to residential with 7‑ft wall; added landscape requirements (§ 20.252.040.C–E).

M‑2 Heavy Industrial

  • Not found in retrieved materials.

Special Residential Mechanics that commonly interact with standards

  • Accessory Dwelling Units (ADUs) and JADUs: Brea implements state law in Chapter 20.52, including baseline 4‑ft side/rear ADU setbacks and detached ADU height limits consistent with state rules (see our ADU and California ADU law pages; local summary at § 20.52.040 Tables).
  • SB 9 “Two‑Unit” developments: Chapter 20.56 imposes compact standards; typical max unit size 800 sq ft, 4‑ft side/rear setbacks, and 16‑ft detached height unless necessary to achieve the 800‑sq‑ft unit (§ 20.56.040, Table 20.56.040.A). See also California housing laws.
  • Mixed‑Use design and incentives: § 20.258.030 governs project‑wide standards and parcel‑consolidation incentives (e.g., up to 10% height/coverage increase for larger assembled sites).

Quick‑reference table: common dimensional standards

District Front setback Side setback Rear setback Max height Lot coverage Density/FAR Code Reference
R‑1 25 ft; garage 25 ft 5 ft; corner side 20 ft 25 ft; main to 10 ft 35 ft (acc. 18 ft) 35% 1 du/lot § 20.208.040.D–E, J
R‑1 (5,000) 15 ft; garage 23 ft 5 ft; zero‑lot‑line as allowed 10 ft 35 ft (acc. 18 ft) 50% 1 du/lot § 20.212.040.D–E, J
R‑2 23 ft (15 ft small SF lots) 5 ft; limited zero‑lot‑line 10 ft (15 ft small SF lots) See ch. standards 50% Duplex/low‑multi § 20.216.040.A, E, J
R‑3 15 ft (10 ft cul‑de‑sac) 5–10 ft with height steps 15 ft+ if >35 ft tall 35–75 ft by adjacency 60% ≥1,750 sq ft/du § 20.220.040.B–D, I
MU‑I (mixed/nonres) Build‑to along key corridors Side often none/10 ft adj. res. 5–10 ft Up to 100 ft (corridor caps) — FAR 3.0; 12.1–50 du/ac § 20.258.020, Table 2‑3
MU‑II (stand‑alone res) 15 ft 5 ft 15–20 ft 60 ft — 6.1–40 du/ac; FAR 2.0 § 20.258.020, Table 2‑7
MU‑III (mixed/nonres) Corridor rules; no parking at edge 5–10 ft averages 0–10 ft by adj. use 35 ft 65% parcel cover (not decks) FAR 1.0; 6.1–18 du/ac § 20.258.020, Table 2‑5
C‑G 10 ft 40 ft to res.+6–7 ft wall 40 ft to res. 35 ft — — § 20.236.040.C–D
M‑1 50 ft (arterial/res edge) 100 ft to res. 100 ft to res. 60 ft — — § 20.252.040.C–D

Notes: Where a cell shows “—” the standard is not specified in that table/chapter or varies by plan review.

How Brea actually uses these standards in practice

  • Adjacency matters. The R‑3 height step‑down is one of the most consequential rules for infill sites abutting lower‑density neighborhoods (§ 20.220.040.C). Map the 100‑ and 200‑ft bands carefully to see if you’re capped at 35/50/75 ft.
  • Corridor form in MU districts often encourages “no‑setback” storefront streets while protecting residential edges with 5–10–15 ft buffers and parking restrictions at the street edge (§ 20.258.020 Tables 2‑3 to 2‑5).
  • Hillsides use pad‑edge setbacks and special height measurement that track the pad, not just finished grade, to control massing (§ 20.206.170.D–F).

Checklist

  • Identify your base zoning and any overlays on the zoning map; check overlay districts if present.
  • Confirm minimum lot area/width/depth and net density limits per your district chapter (e.g., R‑1 § 20.208.040; R‑3 § 20.220.040).
  • Lay out building envelopes using front/side/rear setbacks and any adjacency step‑downs (notably R‑3 height bands).
  • Check height, lot coverage, and any open space/common area minimums (e.g., MU open‑space tables).
  • Verify parking and loading in § 20.08.040 and corridor‑specific parking setbacks in MU tables.
  • If hillside: use pad‑based setbacks and hillside height rules (R1‑H/HR).
  • If proposing ADU or SB 9 two‑unit: apply Chapters 20.52/20.56 standards; note the 4‑ft side/rear and compact height allowances.
  • Confirm whether plan/design review (§ 20.408.040) applies; major centers (C‑C) and many multi‑family/hillside projects do.
  • For deviations, explore Administrative Remedy or CUP‑based minor modifications; see variances and exceptions.

Risks & Ambiguities

Issue Why it matters What to verify
R‑3 height step‑down bands Affects maximum floors near R‑1/R‑2/HR property Measure 100/200‑ft radii and document adjacency per § 20.220.040.C.
MU corridor “no‑setback” frontage Encourages street wall; parking prohibited at corridor edge Confirm your frontage street is one listed in the MU tables and honor the parking/setback notes (§ 20.258.020 Tables 2‑3 to 2‑5).
Hillside FAR HR FAR is referenced but numeric caps weren’t retrieved “Not found in retrieved materials” — request § 20.206.060.D from the City; apply pad/height controls meanwhile.
R‑2 rear yard on small SF lots Rear yard increases to 15 ft in certain small‑lot cases Check if your lot qualifies as a small single‑family lot per § 20.216.040.E.3.a.
Industrial buffers to residential 100‑ft side/rear yards and screening required If M‑1 or M‑P near neighborhoods, map yard lines and walls per § 20.252.040 or § 20.248.040.
Minor modifications Small relief (height, coverage, yard encroachments) is possible See Administrative Remedy/CUP criteria in § 20.408.020–.030; approvals must meet findings.

Plain-English Summary

Brea’s zoning tells you how big your lot must be and how far your building must sit from the street and neighbors, how tall you can build, and how much of the lot you can cover. Single‑family zones like R‑1 use classic suburban setbacks (front 25 ft, sides 5 ft, rear 25 ft) and 35% lot coverage, while R‑1 (5,000) tightens the front to 15 ft and allows 50% coverage. R‑3 allows taller buildings but steps height down near single‑family homes. Mixed‑use corridors (MU‑I/II/III) often build to the sidewalk but add buffers next to homes. Hillside zones use pad‑based setbacks and special height rules. Always layer in parking, any overlays, and design review where required.

Source References

  • R‑1 standards: § 20.208.040 (lots, setbacks, height, coverage).
  • R‑1 (5,000) standards: § 20.212.040 (lots, setbacks, height, coverage).
  • R‑2 standards: § 20.216.040 (lots, setbacks, coverage; building separation).
  • R‑3 standards: § 20.220.040–.050 (density, height step‑downs, setbacks, coverage, plan review).
  • Hillside R1‑H/HR: § 20.200.040; § 20.206.170; § 20.206.180.
  • Mixed‑Use standards: § 20.258.020 Tables 2‑3, 2‑4, 2‑5, 2‑6, 2‑7, 2‑8; § 20.258.030.
  • C‑G: § 20.236.040; C‑P: § 20.224.040; C‑C: § 20.232.030; C‑RC: § 20.244.040.
  • M‑P: § 20.248.040; C‑M: § 20.240.060; M‑1: § 20.252.040.
  • Parking reference: § 20.08.040.
  • Administrative Remedy and CUP adjustments: § 20.408.020–.030.

Information Gaps

  • HR FAR values referenced in § 20.206.060.D were not included in the retrieved excerpts. Not found in retrieved materials.
  • M‑2 (Heavy Industrial) standards were not included in the retrieved excerpts. Not found in retrieved materials.
  • District geography and application boundaries are map‑based; parcel‑specific applicability can vary. Verify with the jurisdiction.

Sources

Retrieved passages

  • Brea Zoning Code (§ 20.258.020) High relevance
  • Brea Zoning Code (§ 20.258.020) High relevance
  • Brea Zoning Code (§ 20.08.040) High relevance
  • CBC § 20.56.040 (§ 20.56.040) High relevance
  • Brea Zoning Code (§ 20.258.020) High relevance
  • Brea Zoning Code (§ 20.206.170.) High relevance
  • Brea Zoning Code (§ 20.258.020) High relevance
  • Brea Zoning Code (§ 20.206.060.D.) High relevance
  • Brea Zoning Code (§ 20.240.060.) High relevance
  • Brea Zoning Code (§ 20.258.020) High relevance
  • Brea Zoning Code (§ 20.206.190) High relevance
  • Brea Zoning Code (§ 20.228.040) High relevance
  • Brea Zoning Code (§ 20.08.035.) High relevance
  • Brea Zoning Code (§ 20.212.030.) High relevance
  • Brea Zoning Code (§ 20.248.040.D.) High relevance
  • Brea Zoning Code (§ 20.258.030) High relevance
  • Brea Zoning Code (§ 20.200.040.) High relevance
  • Brea Zoning Code (§ 20.258.020) High relevance
  • Brea Zoning Code (§ 20.408.040.) High relevance
  • Brea Zoning Code (§ 20.244.040) High relevance
  • Brea Zoning Code (§ 20.244.010) High relevance
  • Brea Zoning Code (§ 20.224.040.) High relevance
  • Brea Zoning Code (Section 20.08.035F) High relevance
  • Brea Zoning Code (section shall) High relevance
  • Brea Zoning Code (§ 20.206.060.) High relevance
  • Brea Zoning Code (title are) High relevance
  • Brea Zoning Code (§ 20.236.040.) High relevance
  • Brea Zoning Code (§ 20.408.040) High relevance

Cited sections

Frequently asked questions

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

A single detached home is allowed on a lot of at least 7,200 sq ft, with typical setbacks of 25 ft front, 5 ft sides (20 ft at a street side), and 25 ft rear (main building can project to 10 ft). Height is 35 ft and lot coverage 35%. ADUs and SB 9 two‑unit options have their own standards (§ 20.208.040; Chs. 20.52, 20.56).

How do R-1 (5,000) setbacks differ from R-1?

Front is 15 ft (versus 25 ft in R‑1), garages must be 23 ft back, sides are 5 ft (with a zero‑lot‑line pathway), and rear is 10 ft. Coverage can reach 50% in R‑1(5,000) versus 35% in R‑1 (§ 20.212.040.E, J; § 20.208.040.J).

What are the height limits for R-3 near single-family areas?

They step down by distance from R‑1/R‑1(5,000)/R‑2/HR: 35 ft within 100 ft; 50 ft from 100–200 ft; 75 ft beyond 200 ft (§ 20.220.040.C.1).

In Mixed-Use I (MU‑I), can I put parking along Brea Boulevard?

No ground‑level parking is allowed adjacent to key corridors like Brea Boulevard and Imperial within the front setback condition; MU tables also impose 5‑ft parking setbacks elsewhere (§ 20.258.020, Table 2‑3 notes).

What are hillside pad setbacks and heights?

Detached hillside homes use pad‑edge setbacks that scale with pad size (front 20–40 ft; side 7.5–10 ft; rear 20–30 ft). Heights are measured from the pad and cap at 35 ft for detached; attached hillside product can reach 45 ft (§ 20.206.170.D–F; § 20.206.180.D).

What buffers are required for industrial next to homes?

In M‑1, side/rear yards must be at least 100 ft when abutting residential, with a 7‑ft masonry wall; arterials/local‑residential edges require a 50‑ft yard with landscaping (§ 20.252.040.D).

Do I need design review for a shopping center?

Yes; C‑C requires site plan/design review, and no building may be within 100 ft of a residential zone boundary (§ 20.232.030.D; § 20.408.040).

Can small adjustments be approved without a full variance?

Often. “Administrative Remedy” and CUP processes can approve minor modifications (e.g., small changes to height, coverage, or yard encroachments) if findings are met (§ 20.408.020–.030). See variances and exceptions.

What open space is required for stand‑alone residential in MU‑II?

Common open space of 100 sq ft/du and private open space of 75 sq ft/du, with minimum dimensions, are required (§ 20.258.020, Table 2‑7).

Where can I find parking ratios?

Most chapters point back to § 20.08.040 for parking and loading; start there and then apply any corridor‑specific parking setback rules in MU tables. See our parking guide.

More in Brea code

Ask about any Brea property

Get a cited, plain-English answer on Brea zoning, setbacks, FAR, ADUs and permits — for any address.

Start Free Trial

More Brea zoning topics

Brea Zoning

Brea Land Use

Brea Parking

Brea Design Review

Brea Overlay Districts

Brea Historic Preservation

Brea Signage

Brea Nonconforming Uses

Brea Variances and Exceptions

Brea Landscaping and Screening

Brea overview