Overview
Long Beach uses a 4-letter suffix system (N=Standard, S=Small, M=Moderate, L=Large, A=Accessory, I=Intensified, T=Townhouse, R=Restricted-height) appended to residential base districts (R-1-N, R-1-S, R-1-M, R-1-L, R-2-N, R-2-A, R-2-I, R-2-S, R-3, R-3-4, R-3-T, R-4, R-4-R, RP). Encoded lot-scale/intensity is unique among CA cities studied. RP-12 / RP-18 encode density numerically in the designation. Port of Long Beach Harbor District operates as a distinct zoning overlay administered through the Harbor Department.
- 4-letter suffix system (N, S, M, L, A, I, T, R) encoding lot scale and development intensity directly in the district designation. No other CA city in this study uses this system. c§21.31.020
- R-2-A 'Accessory' zone — one unit restricted to accessory unit; predates state ADU law but achieves similar goals. State ADU law now provides broader preemption than R-2-A's original design. c§21.31.020
- R-2-I near public open space — density increase offset by park access; detached accessory buildings prohibited. c§21.31.020
+ 11 more in Quirks & notes
Districts
| Code | Name | Category | Min lot | Height | Coverage | FAR | Du/ac | Parking | Setbacks F/S/R |
|---|---|---|---|---|---|---|---|---|---|
| R-1-L | Single-Family Large | res_sf | — | — | — | — | — | — | — / — / — |
| R-1-N | Single-Family Standard | res_sf | — | 28 ft[4] | 0.5[5] | — | — | — | 20[1] / 5[2] / 20[3] |
| R-1-M | Single-Family Moderate | res_sf | — | — | — | — | — | — | — / — / — |
| R-1-T | Single-Family Townhouse | res_th | — | — | — | — | — | — | — / — / — |
| R-1-S | Single-Family Small | res_sf | — | — | 0.6[9] | — | — | — | 15[6] / 3[7] / 15[8] |
| R-2-N | Two-Family Standard | res_sf | — | — | 0.55[13] | — | — | — | 20[10] / 5[11] / 20[12] |
| R-2-A | Two-Family Accessory | res_sf | — | — | — | — | — | — | — / — / — |
| R-2-I | Two-Family Intensified | res_sf | — | — | — | — | — | — | — / — / — |
| R-2-S | Two-Family Small | res_sf | — | — | — | — | — | — | — / — / — |
| R-3 | Multi-Family | res_mf | — | — | — | — | — | — | 17[14] / 7[15] / 15[16] |
| R-3-4 | Four-Family | res_mf | — | — | — | — | — | — | — / — / — |
| R-3-T | Townhouse Transition | res_th | — | — | — | — | — | — | — / — / — |
| R-4 | Multi-Family | res_mf | — | — | — | — | — | — | 17[17] / 7[18] / 15[19] |
| R-4-R | Multi-Family Restricted Height | res_mf | — | — | — | — | — | — | — / — / — |
| RP | Residential Planned Unit Development | res_mf | — | — | — | — | — | — | — / — / — |
Confidence: confirmed partial under review not found
Overlays
State preemptions
Non-applicable laws (1)
Adopted building codes
Statewide mandatory minimum
Click a code label to open its state-by-state adoption atlas.
Quirks & notes
- 4-letter suffix system (N, S, M, L, A, I, T, R) encoding lot scale and development intensity directly in the district designation. No other CA city in this study uses this system. c§21.31.020
- R-2-A 'Accessory' zone — one unit restricted to accessory unit; predates state ADU law but achieves similar goals. State ADU law now provides broader preemption than R-2-A's original design. c§21.31.020
- R-2-I near public open space — density increase offset by park access; detached accessory buildings prohibited. c§21.31.020
- R-3-T commercial-to-residential transition zone — lot-line-to-lot-line, high coverage, inward-oriented urban form. Explicitly characterized as appropriate 'in areas in transition from commercial to residential use' — unusual for a residential district. c§21.31.020
- R-4-R restricted height for MF near older/lower-density areas; 'R' suffix signals height restriction. c§21.31.020
- RP density baked into zone designation number (RP-12, RP-18 = DU/ac) rather than Table lookup. c§21.31.020
- R-1-L garage 50 ft setback from street — as far as the front of many houses on smaller lots. c§21.31.245
- 84 ft continuous wall rule for MF buildings — max wall length without ≥10 ft recess. Linear articulation rule distinct from FAR/coverage controls. c§21.31.215
- Wilmington Oil Field petroleum overlay citywide — one of the largest onshore oil fields in the US. Routine Phase I ESA and methane mitigation required. Citywide condition, not site-specific. c§21.55
- R-1-S and R-1-M both prohibit detached accessory buildings — R-1-M prohibition (despite 'moderate' size) reflects odd/shaped parcel design philosophy. c§21.31.245
- Zero lot line in three districts (R-1-M, R-1-T, R-3-T) — opposite side ≥ 2× required; adjacent structure ≥ 8 ft. c§21.31.215
- Port of Long Beach Harbor District is governed by Board of Harbor Commissioners, NOT City Planning. Title 21 does not apply to Port parcels; Port Master Plan certified by CA Coastal Commission governs. Unique city-within-a-city zoning structure.
- Coastal Zone covers much of South/West Long Beach — adds 4-8 week CDP review and Coastal Commission appeal jurisdiction. Also excludes those parcels from SB 9. c§21.54
- LA Metro A Line (renamed from Blue Line in the 2019/2020 Metro letter-designation system) terminates at Downtown Long Beach — 5 stations in the city (Willow, PCH, Anaheim St, 5th St, Downtown Long Beach). Makes downtown and A Line spine corridors fully AB 2097-eligible (no parking minimums).
Formulas
Definitions
- height
- Measured from grade to highest point of structure per §21.31
- lot_coverage
- Building footprint / lot area. Includes principal + accessory structures.
- far
- du_ac
- Dwelling units per gross acre.
- impervious_cover
- setback_front
- Front property line to nearest building face per §21.31.215
- setback_side
- Side property line to nearest building face per §21.31.215
- setback_rear
- Rear property line to nearest building face per §21.31.215
- parking
- Spaces per dwelling unit unless noted; non-residential per §21.41
- zero_side_yard
- Permitted in R-1-M, R-1-T, R-3-T per §21.31.215; opposite side yard ≥ 2× required individual side yard; adjacent structure ≥ 8 ft from zero lot line.
- continuous_wall
- Max 84 ft continuous MF wall without ≥10 ft recess (10 ft each dimension) per §21.31.215
Capacity calculations
- max_footprint_sf
lot_area_sf * lot_coverage- max_gfa_sf
lot_area_sf * far- max_units_from_density
lot_area_sf * du_ac / 43560- buildable_width_ft
lot_width_ft - setback_side_ft * 2- buildable_depth_ft
lot_depth_ft - setback_front_ft - setback_rear_ft- buildable_envelope_sf
buildable_width_ft * buildable_depth_ft- max_stories_approx
max_height_ft / 10- max_gfa_from_envelope
min(buildable_envelope_sf * max_stories_approx, max_gfa_sf)- parking_required
units * parking
Massing explorer
Interactive 3D comparison across every district. Drag to orbit, scroll to zoom, use the slider to walk districts, and toggle applicable overlays in the right-side panel.
| District | Category | Height | FAR | Coverage | Setbacks | Parking | Density | Min lot | Overlays |
|---|
Sources & references
- [1] §21.31.215
- [2] §21.31.215
- [3] §21.31.215
- [4] §21.31.215
- [5] §21.31.215
- [6] §21.31.215
- [7] §21.31.215
- [8] §21.31.215
- [9] §21.31.215
- [10] §21.31.215
- [11] §21.31.215
- [12] §21.31.215
- [13] §21.31.215
- [14] i§21.31.215
- [15] i§21.31.215
- [16] §21.31.215
- [17] i§21.31.215
- [18] i§21.31.215
- [19] §21.31.215
Research status
Publication gates
| primary url present | passed | |
|---|---|---|
| no aggregator cited | passed | |
| confidence tags full form | passed | |
| overlays have parameters trigger confidence | passed | |
| preempt section city specific | passed |
Data quality
- Full Table 31-2A (complete dimensional standards for R-1-L, R-2-A, R-2-I, R-2-S, R-3-4, R-4-R, RP) not retrieved live
- Table 31-7 (R-3/R-4 garage standards for 3+ unit projects) not retrieved live
- Table 31-2 (narrow lot <27 ft wide standards) not retrieved live
- PD-30 Downtown Plan subdistrict dimensional standards not retrieved live
- LBMC oil code chapter number + full Wilmington Oil Field setback/mitigation parameters not retrieved live
- Individual historic district boundaries and design guidelines not retrieved (Willmore City, California Heights, Bluff Heights, Bembridge, Carroll Park, Rose Park, Drake Park, etc.)
- Long Beach Airport LUCP specific CNEL contours and Part 77 surfaces not retrieved
- LBMC §21.41 parking ratios by use not retrieved as a full table
- HCD Housing Element certification status for 6th-cycle (Builder's Remedy gating) not confirmed
- HCD APR SB 423 eligibility determination not confirmed
Known issues
Verification
| last_verified_at | 2026-04-19T00:00:00Z |
|---|---|
| verifier_specialist | verification-pass |
| verifier_version | 1.0 |
| verification_result | passed |
| atomic_claims_checked | 54 |
| atomic_claims_passed | 54 |
| atomic_claims_failed | 0 |
| failed_claims | |
| narrative_ref | narratives/long-beach-ca/lb-2026-04-19-v2.json |
| metro_line_obsolescence_check | note: v1 profile and markdown contained NO Metro rail line references (neither obsolete nor current). v2 adds current 'A Line' terminology in AB 2097 preemption narrative and PD-30 overlay. No Compton-style obsolete-name bug present. |
Other cities in this state
Nearest-alphabetical profiles. Click through to compare zoning patterns side-by-side.