San Diego, CA Zoning
Districts & Requirements
Every zoning district in San Diego with permitted uses, setbacks, height limits, and density requirements — in plain English. San Diego uses a hybrid zoning system — traditional base zones (RS, RM, CN, CC, etc.) plus the Complete Communities Housing Solutions (CCHS) overlay that unlocks unlimited density in transit priority areas. The naming convention encodes intensity: RS-1-7 means single-family with 1 unit per 5,000 SF of lot. RM-3-9 means multifamily at 1 unit per 600 SF. Add California's state density bonus, SB 9 lot splits, and AB 2097 parking elimination near transit, and San Diego is one of the most permissive development environments in the state.
18
Zoning districts
8
Overlay districts
1,386,000
Population
2025
Code adopted
Quick Reference
Find your district, see what you can do. Click any row for details.
| District | At a glance | Height | Coverage |
|---|---|---|---|
| RS-1-1 | 1-acre estate lots. One home + one ADU. No subdivision potential without a rezone. | 30 ft | 40% |
| RS-1-4 | Quarter-acre single-family. ADU potential. SB 9 lot split could yield 4 units total. | 30 ft | 50% |
| RS-1-7 | San Diego's workhorse single-family zone. 5,000 SF lots. ADU by right. SB 9 lot split possible on wider lots. | 30 ft | 55% |
| RS-1-14 | Compact single-family with 4-ft side setbacks. Same lot size as RS-1-7 but tighter building envelope. | 35 ft | 60% |
| RM-1-1 | 1 unit per 3,000 SF. Duplexes, triplexes, small apartments. The entry point for multifamily. | 30 ft | 60% |
| RM-2-5 | 1 unit per 1,500 SF. 40-ft height, 1.35 FAR. The sweet spot for small apartment buildings. | 40 ft | 65% |
| RM-3-7 | 1 unit per 1,000 SF. 40-ft height, 1.8 FAR. Mid-rise apartments in urban neighborhoods. | 40 ft | 70% |
| RM-3-9 | 1 unit per 600 SF. 60-ft height, 2.7 FAR. High-rise-scale density. Structured parking required. | 60 ft | 75% |
| CN-1-3 | Small-scale neighborhood retail + apartments. 30-ft height, 1.0 FAR. Corner stores and mixed-use. | 30 ft | 80% |
| CC-2-3 | Community-serving commercial. 45-ft height, 0.75 FAR. Strip mall retrofit territory. | 45 ft | 75% |
| CC-3-5 | Major commercial corridor. 100-ft height, 2.0 FAR (3.0 mixed-use). Tower-scale potential. | 100 ft | 80% |
| CC-3-9 | 1 unit per 400 SF, 2.0 base / 3.0 mixed-use FAR. Highest base-zone density outside downtown. | 65 ft | 80% (35% minimum) |
| CV-1 | Tourist-commercial: hotels, restaurants, attractions. Residential allowed in mixed-use only. | 30 ft (varies by community plan) | 60% |
| IP-1-1 | Light industrial, R&D, office. No residential. 30-ft height. Sorrento Valley, Miramar, Otay Mesa. | 30 ft | 50% |
| IL-2-1 | Light industrial, flex warehouse. 60-ft height for high-bay. Some becoming residential conversion candidates. | 60 ft | 65% |
| CCPD-C | No height limit in core. Up to 14.0 FAR. The most valuable entitlement in San Diego. | No limit (varies by subdistrict) | 100% (base), 75% (tower) |
| CCPD-E | East Village / Ballpark. Up to 8.0 FAR. Heavy residential conversion activity. | 200 ft (varies by block) | 100% (base), 75% (tower) |
| CCPD-W | Waterfront district. 4.0-6.0 FAR. Coastal Commission review adds 6+ months. | 160 ft (varies by block) | 100% (base), 75% (tower) |
Residential — Single Family
4 districts in San Diego
RS-1-1
Residential — Estate (1 Acre)Lowest-density residential in the city. 40,000 SF minimum lot (roughly 1 acre). Found in Rancho Bernardo, Scripps Ranch, and Black Mountain Ranch. If you're looking at RS-1-1 land, you're building a custom estate home.
What you can build
- ✓Single-family home
- ✓One ADU + one JADU (by state law)
- ✓Home occupation
- ✓Agricultural accessory uses
- ✗Duplexes or multifamily
- ✗Commercial or retail
- ✗Subdivision below 40,000 SF lots
Key numbers
- Height
- 30 ft
- Lot min
- 40,000 SF (~0.92 acres)
- Width
- 100 ft
- Coverage
- 40%
- Front
- 25 ft
- Side
- Lot width x 0.08 (min 8 ft)
- Rear
- 25 ft
What this means in practice
40% coverage on 40,000 SF = 16,000 SF footprint — enormous, but you'll never use it all. The real play here is the ADU: California law lets you add a detached ADU up to 1,200 SF plus a JADU (up to 500 SF carved from the main house). On an estate lot, that's a guest house and rental unit with minimal neighbor pushback.
RS-1-4
Residential — Large Lot (10,000 SF)Standard large-lot single-family. 10,000 SF minimum, 20-ft setbacks. Common in older neighborhoods like Clairemont, Tierrasanta, and Allied Gardens. These are the lots where SB 9 starts to get interesting.
What you can build
- ✓Single-family home
- ✓One ADU + one JADU
- ✓SB 9 duplex (two units on single lot)
- ✓SB 9 lot split + duplex (up to 4 units total)
- ✗Triplexes or larger multifamily
- ✗Commercial or retail
Key numbers
- Height
- 30 ft
- Lot min
- 10,000 SF
- Width
- 70 ft
- Coverage
- 50%
- Front
- 20 ft
- Side
- Lot width x 0.08 (min 5 ft)
- Rear
- 20 ft
What this means in practice
The SB 9 math on a 10,000 SF lot: split into two 5,000 SF lots, build a duplex on each = 4 units. Or skip the split and build 1 primary + 1 ADU + 1 JADU = 3 units. At 50% coverage you get a 5,000 SF footprint — plenty for a two-story home plus detached ADU. Run both scenarios and compare the rental income to your construction cost.
RS-1-7
Residential — Standard Lot (5,000 SF)The most common residential zone in San Diego. 5,000 SF minimum, 50-ft wide. Found in North Park, Normal Heights, City Heights, Kensington, and dozens of other neighborhoods. This is where the ADU boom is happening.
What you can build
- ✓Single-family home
- ✓One ADU + one JADU
- ✓SB 9 duplex (ministerial approval)
- ✓Home occupation
- ✗Triplexes or larger multifamily
- ✗Commercial or retail
- ✗SB 9 lot split (most lots too small at 5,000 SF — need 2,400 SF per resulting lot)
Key numbers
- Height
- 30 ft
- Lot min
- 5,000 SF
- Width
- 50 ft
- Coverage
- 55%
- Front
- 15 ft
- Side
- 4 ft
- Rear
- 13 ft
What this means in practice
55% coverage on 5,000 SF = 2,750 SF footprint. Two stories gets you ~5,000 SF. The ADU play is the most common deal in RS-1-7: detached 1,200 SF ADU in the rear yard at $250-350/SF construction cost, renting $2,000-2,800/month in central neighborhoods. Payback in 7-10 years depending on location. Check the alley situation — rear access makes ADU construction dramatically cheaper.
RS-1-14
Residential — Small Lot (5,000 SF, reduced setbacks)Small-lot single-family found in denser older neighborhoods. Same 5,000 SF lot as RS-1-7 but calibrated for tighter urban lots with reduced rear setbacks. Common in southeast San Diego, City Heights, and Encanto.
What you can build
- ✓Single-family home
- ✓One ADU + one JADU
- ✓SB 9 duplex
- ✓Home occupation
- ✗Triplexes or multifamily
- ✗Commercial
Key numbers
- Height
- 35 ft
- Lot min
- 5,000 SF
- Width
- 50 ft
- Coverage
- 60%
- Front
- 15 ft
- Side
- 4 ft
- Rear
- 10 ft
What this means in practice
The 35-ft height limit (vs. 30 ft in RS-1-7) and 60% coverage give you more building area. 60% of 5,000 SF = 3,000 SF footprint. At 2.5 stories within 35 ft, you're looking at ~7,000 SF total. The reduced 10-ft rear setback opens up more room for a detached ADU. Check if you're in a Transit Priority Area — if so, CCHS may apply and change the entire calculus.
Residential — Multifamily
4 districts in San Diego
RM-1-1
Multifamily — Low DensitySan Diego's lowest-density multifamily zone. One dwelling unit per 3,000 SF of lot area. Found in transitional areas between single-family neighborhoods and denser corridors. The 30-ft height limit keeps buildings at 2 stories.
What you can build
- ✓Single-family + ADU
- ✓Duplex, triplex, fourplex
- ✓Small apartment buildings
- ✓Townhouses
- ✗Commercial or retail (standalone)
- ✗Buildings over 30 ft
- ✗Industrial
Key numbers
- Height
- 30 ft
- Lot min
- 3,000 SF per unit
- Width
- 50 ft
- Coverage
- 60%
- Front
- 15 ft
- Side
- 5 ft
- Rear
- 15 ft
What this means in practice
1 unit per 3,000 SF means a standard 6,000 SF lot = 2 units by right. A 12,000 SF lot = 4 units. At 0.75 FAR and 60% coverage, a 10,000 SF lot yields ~7,500 SF of gross floor area across 2 stories — 3 apartments at ~1,200 SF each plus common areas. Before buying, check whether state density bonus or Complete Communities can unlock more units on the same lot.
RM-2-5
Multifamily — Medium DensityMedium-density multifamily along San Diego's urban corridors. One unit per 1,500 SF of lot area, 40-ft height limit (3-4 stories). Found in Hillcrest, University Heights, North Park edges, and Ocean Beach. This is where most infill apartment projects land.
What you can build
- ✓Apartment buildings (3-4 stories)
- ✓Townhouse complexes
- ✓Mixed residential (flats + townhouses)
- ✓Senior housing
- ✗Standalone commercial
- ✗Buildings over 40 ft
- ✗Industrial
Key numbers
- Height
- 40 ft
- Lot min
- 1,500 SF per unit
- Width
- 50 ft
- Coverage
- 65%
- Front
- 15 ft
- Side
- 5 ft
- Rear
- 15 ft
What this means in practice
At 1 unit per 1,500 SF, a 7,500 SF lot supports 5 units by right. With state density bonus (35% more at very-low-income set-aside), that's 6 units. At 1.35 FAR, that 7,500 SF lot = ~10,000 SF of building. Three-story walk-up apartments are the typical product — no elevator required under 4 stories, which saves $500K+ in construction cost. Surface parking fits behind the building if you have alley access.
RM-3-7
Multifamily — High Density (1,000 SF/DU)Higher-density multifamily at 1 unit per 1,000 SF. 40-ft height with 1.8 FAR. Found in denser parts of Hillcrest, Bankers Hill, and North Park. The reduced 10-ft front setback creates a more urban street presence.
What you can build
- ✓Mid-rise apartments (3-4 stories)
- ✓Townhouse complexes
- ✓Senior housing
- ✓Mixed-income housing
- ✗Standalone commercial
- ✗Industrial
Key numbers
- Height
- 40 ft
- Lot min
- 1,000 SF per unit
- Width
- 50 ft
- Coverage
- 70%
- Front
- 10 ft
- Side
- 5 ft
- Rear
- 5 ft
What this means in practice
The 5-ft rear setback is the key difference from RM-2-5. On a 10,000 SF lot: 10 units by right. At 1.8 FAR, that's 18,000 SF of building — 10 units averaging 1,200 SF gross (including circulation). With state density bonus at 50% for very-low-income, you could push to 15 units. Four-story podium with tuck-under parking is the standard product type here.
RM-3-9
Multifamily — Very High Density (600 SF/DU)San Diego's densest base residential zone. One unit per 600 SF with a 60-ft height limit and 2.7 FAR. Found in core areas of Downtown-adjacent neighborhoods, Hillcrest, and Mission Valley. This is where mid-rise and high-rise apartments pencil.
What you can build
- ✓High-density apartments (5-6 stories)
- ✓Condo towers
- ✓Senior housing complexes
- ✓Mixed-income developments
- ✗Standalone commercial (without conditional use permit)
- ✗Industrial
Key numbers
- Height
- 60 ft
- Lot min
- 600 SF per unit
- Width
- 50 ft
- Coverage
- 75%
- Front
- 10 ft
- Side
- 5 ft
- Rear
- 5 ft
What this means in practice
At 600 SF per unit, a half-acre lot (21,780 SF) = 36 units by right. With state density bonus, push to 50+ units. At 2.7 FAR, that's ~59,000 SF of building on a half-acre. You need structured parking at this density — plan for 1 level of below-grade or a podium with 2-3 levels of parking. The 60-ft height allows 5 stories of wood-frame over 1 story of concrete podium (Type III-A over Type I). If you're in a Transit Priority Area, CCHS removes parking minimums entirely.
Commercial
5 districts in San Diego
CN-1-3
Commercial — NeighborhoodNeighborhood-serving commercial for corner stores, cafes, and small offices with residential above. 30-ft height keeps it at 2-3 stories. Scattered throughout older neighborhoods at intersections and along minor commercial streets.
What you can build
- ✓Retail and restaurant (ground floor)
- ✓Apartments above commercial
- ✓Office
- ✓Personal services (salon, dry cleaner)
- ✓Mixed-use (residential + commercial)
- ✗Drive-throughs
- ✗Auto repair or car sales
- ✗Heavy commercial or industrial
- ✗Standalone residential on ground floor (along primary street)
Key numbers
- Height
- 30 ft
- Lot min
- 1,500 SF per residential unit
- Width
- 25 ft
- Coverage
- 80%
- Front
- 0 ft (10 ft max)
- Side
- 10 ft (0 ft if adjacent commercial)
- Rear
- 10 ft
What this means in practice
The 0-ft front setback (with 10-ft max build-to) puts your storefront at the sidewalk — this is intentional for walkable retail. At 1.0 FAR, a 5,000 SF lot yields 5,000 SF of building: 2,500 SF ground-floor retail + 2,500 SF of apartments above (2 units). Small scale, but these pencil as value-add acquisitions — buy an underperforming single-story retail building, add residential above.
CC-2-3
Commercial — Community (Low)Low-rise community commercial for mid-size retail centers, grocery stores, and offices. 45-ft height allows 3-4 stories. Common along major arterials like El Cajon Blvd, University Ave, and Morena Blvd. Many of these sites are aging strip malls ripe for redevelopment.
What you can build
- ✓Retail centers and grocery stores
- ✓Apartments above commercial
- ✓Office buildings
- ✓Hotels
- ✓Mixed-use (residential + commercial)
- ✗Heavy industrial
- ✗Residential on ground floor along primary frontage
Key numbers
- Height
- 45 ft
- Lot min
- 1,500 SF per residential unit
- Width
- 25 ft
- Coverage
- 75%
- Front
- 0 ft (10 ft max)
- Side
- 10 ft (0 ft if adjacent commercial)
- Rear
- 10 ft
What this means in practice
0.75 FAR seems low, but this is where Complete Communities changes the game. If your CC-2-3 site is in a Transit Priority Area, CCHS lets you opt into 4.0 to unlimited FAR depending on the tier. A 1-acre strip mall at 0.75 FAR = 32,000 SF of building. That same acre under CCHS Tier 4 = 174,000 SF. Before making an offer on any CC site, check the CCHS FAR map.
CC-3-5
Commercial — Community (High)San Diego's most permissive base commercial zone by height. 100-ft limit allows 8-10 stories. 2.0 base FAR jumps to 3.0 for mixed-use. Found in Mission Valley, Kearny Mesa, and along major corridors. These are the sites where developers build large mixed-use projects.
What you can build
- ✓High-rise mixed-use
- ✓Apartment buildings (8+ stories)
- ✓Office towers
- ✓Hotels
- ✓Large-format retail
- ✗Heavy industrial
- ✗Uses incompatible with residential (if mixed-use)
Key numbers
- Height
- 100 ft
- Lot min
- 1,500 SF per residential unit
- Width
- 50 ft
- Coverage
- 80%
- Front
- 0 ft (10 ft max)
- Side
- 10 ft
- Rear
- 10 ft
What this means in practice
At 3.0 mixed-use FAR, a 1-acre site yields ~130,000 SF of building: 15,000 SF ground-floor retail + 115,000 SF residential (100-120 apartments). The 100-ft height means you can do 8 stories of Type III-A wood-frame or go steel/concrete for 10+. Under CCHS, the same site could reach 8.0 FAR (Tier 2) = 350,000 SF. The delta between base zoning and CCHS is where the real opportunity lives.
CC-3-9
Commercial — Community (Urban Core)Urban-core commercial with the highest base residential density outside of downtown planned districts. One unit per 400 SF of lot area. Found in Hillcrest, University Heights, and other walkable neighborhoods. Many sites have a minimum 35% lot coverage requirement to prevent surface parking lots.
What you can build
- ✓High-density mixed-use
- ✓Apartment buildings
- ✓Office and retail
- ✓Hotels
- ✓Entertainment venues
- ✗Auto-oriented uses in some locations
- ✗Heavy industrial
Key numbers
- Height
- 65 ft
- Lot min
- 400 SF per residential unit
- Width
- 25 ft
- Coverage
- 80% (35% minimum)
- Front
- 0 ft (10 ft max)
- Side
- 10 ft (0 ft if adjacent commercial)
- Rear
- 10 ft (0 ft optional)
What this means in practice
400 SF per unit on a 10,000 SF lot = 25 units by right — before any density bonus. With state density bonus at 50%, that's 37 units. At 2.0-3.0 FAR and 65-ft height, you're building a 5-story podium with structured parking. The 35% minimum lot coverage prevents land-banking as parking lots. If you own a surface lot in a CC-3-9 zone, the city is telling you to build on it.
CV-1
Commercial — VisitorVisitor-serving commercial along the coast and in tourism areas. Hotels, restaurants, and entertainment are the primary uses. Residential is allowed only as part of a mixed-use development where 80% of the project is residential and at least 90% of base FAR is used.
What you can build
- ✓Hotels and resorts
- ✓Restaurants and bars
- ✓Entertainment and attractions
- ✓Residential (in mixed-use only, 80%+ residential)
- ✓Retail supporting tourism
- ✗Standalone residential
- ✗Industrial
- ✗Auto-oriented commercial
- ✗General office (primary use)
Key numbers
- Height
- 30 ft (varies by community plan)
- Lot min
- 5,000 SF
- Width
- 50 ft
- Coverage
- 60%
- Front
- 10 ft
- Side
- 10 ft
- Rear
- 10 ft
What this means in practice
The height limits in CV zones are often driven by the community plan overlay, not the base zone — Pacific Beach, Mission Beach, and Ocean Beach community plans can restrict height to 30 ft regardless of what the base zone allows. The 80% residential / 90% FAR threshold for mixed-use residential is a high bar. If you're trying to build apartments on a CV site, you need a large project that's mostly residential. Hotels are the path of least resistance in this zone.
Industrial
2 districts in San Diego
IP-1-1
Industrial — Business ParkBusiness park industrial for office, R&D, and light manufacturing. No residential allowed — this is employment-focused zoning. San Diego's major tech and biotech campuses (Sorrento Valley, Torrey Pines) are largely IP zoned.
What you can build
- ✓Office and R&D
- ✓Light manufacturing
- ✓Biotech and lab space
- ✓Warehouse and distribution
- ✓Data centers
- ✗Residential
- ✗Retail (except ancillary)
- ✗Heavy manufacturing
- ✗Hotels
Key numbers
- Height
- 30 ft
- Lot min
- 10,000 SF
- Width
- 50 ft
- Coverage
- 50%
- Front
- 20 ft
- Side
- 10 ft
- Rear
- 10 ft
What this means in practice
IP land in Sorrento Valley and Torrey Pines trades at $100-200/SF because of the biotech and tech tenant demand. The 30-ft height cap keeps most buildings at 2 stories. No residential conversion allowed — the city is protecting employment land. If you're looking at industrial-to-residential conversion plays, look at IL zones near transit instead.
IL-2-1
Industrial — LightLight industrial for manufacturing, warehousing, and flex space. The 60-ft height limit accommodates high-bay industrial. Found in Barrio Logan, East Village edges, and Morena. Some IL sites near transit are potential CCHS conversion candidates through community plan amendments.
What you can build
- ✓Manufacturing and assembly
- ✓Warehouse and distribution
- ✓Flex industrial/office
- ✓Brewery and distillery
- ✓Artisan and maker spaces
- ✗Residential (without rezone)
- ✗General retail
- ✗Hotels
Key numbers
- Height
- 60 ft
- Lot min
- 10,000 SF
- Width
- 50 ft
- Coverage
- 65%
- Front
- 20 ft
- Side
- 10 ft
- Rear
- 10 ft
What this means in practice
The craft brewery wave turned many IL-zoned buildings into high-value food-and-beverage destinations (Miramar, Morena). At 60-ft height, you can do a 4-story high-bay warehouse or industrial flex building. If you're buying IL land near a trolley station, the long game is a community plan amendment to allow residential — East Village and Barrio Logan are already seeing this. That rezone can 5-10x the land value.
Downtown Planned District
3 districts in San Diego
CCPD-C
Downtown — CoreSan Diego's downtown core has no height limit and FAR up to 14.0. Governed by the Centre City Planned District Ordinance, not base zoning. This is where the city's tallest buildings go. Ground-floor activation required on designated streets.
What you can build
- ✓High-rise residential towers
- ✓Class A office towers
- ✓Hotels
- ✓Mixed-use at any scale
- ✓Entertainment and cultural venues
- ✗Industrial or manufacturing
- ✗Auto-oriented uses
- ✗Low-intensity uses on prime blocks (minimum density requirements)
Key numbers
- Height
- No limit (varies by subdistrict)
- Lot min
- None
- Width
- None
- Coverage
- 100% (base), 75% (tower)
- Front
- Build-to line (0 ft)
- Side
- 0 ft
- Rear
- 0 ft
What this means in practice
Downtown FAR ranges from 4.0 (Marina subdistrict edges) to 14.0 (Core subdistrict). A quarter-acre downtown parcel at 10.0 FAR = 108,000 SF of building. Tower floor plates typically 8,000-12,000 SF with 75% coverage above the podium. The 100% base coverage / 75% tower rule means your podium fills the lot and the tower steps back. Inclusionary housing requirement: 10% of units at 65% AMI or pay an in-lieu fee (~$15-25/SF). The in-lieu fee is usually cheaper than building the affordable units on-site in a tower.
CCPD-E
Downtown — EmploymentDowntown's eastern employment district covering East Village and the Ballpark area. Up to 8.0 FAR with residential allowed by right. This is the most active development area in downtown San Diego — dozens of projects entitled or under construction.
What you can build
- ✓Apartment and condo towers
- ✓Office buildings
- ✓Hotels
- ✓Ground-floor retail and restaurants
- ✓Maker spaces and flex creative
- ✗Heavy industrial
- ✗Auto-oriented uses
Key numbers
- Height
- 200 ft (varies by block)
- Lot min
- None
- Width
- None
- Coverage
- 100% (base), 75% (tower)
- Front
- Build-to line (0 ft)
- Side
- 0 ft
- Rear
- 0 ft
What this means in practice
East Village land trades at $250-450/SF depending on block and FAR allowance. At 8.0 FAR, a 10,000 SF lot yields 80,000 SF of building — roughly 75 apartments in a 15-story tower with ground-floor retail. The ballpark proximity drives restaurant and entertainment demand on the ground floor. Most new projects are 7-over-2 (7 stories wood-frame over 2 stories concrete podium) at 100-120 ft, or concrete towers at 150-200 ft. Wood-frame saves 20-30% on construction cost but limits you to ~85 ft.
CCPD-W
Downtown — Waterfront / MarinaDowntown's western waterfront district including Marina, Little Italy edges, and the Embarcadero. Height and FAR lower than Core but with premium water-view pricing. Coastal Commission jurisdiction adds significant entitlement time and complexity.
What you can build
- ✓Residential towers (water views command premium)
- ✓Hotels
- ✓Mixed-use with ground-floor activation
- ✓Waterfront restaurants and entertainment
- ✗Industrial
- ✗Uses blocking public coastal access
- ✗Anything Coastal Commission won't approve
Key numbers
- Height
- 160 ft (varies by block)
- Lot min
- None
- Width
- None
- Coverage
- 100% (base), 75% (tower)
- Front
- Build-to line (0 ft)
- Side
- 0 ft
- Rear
- 0 ft
What this means in practice
Waterfront sites command $500-800/SF for condos because of the views. But Coastal Commission review adds 6-12 months to your entitlement timeline and can impose public access, view corridor, and affordable housing conditions. Budget an extra $200-500K in professional fees (coastal consultants, lawyers, additional design iterations). The premium pricing usually justifies the extra cost and time, but your capital needs to be patient.
Development Bonus Program
San Diego developers can stack multiple density programs. First: California State Density Bonus Law (Gov Code 65915) — provide 5-15% affordable units and receive a 20-50% density bonus plus 1-5 development incentives (height, setback, FAR waivers). Second: Complete Communities Housing Solutions — in Transit Priority Areas, opt into unlimited density with tiered FAR (4.0 to unlimited) in exchange for 40% affordable units. Third: SB 9 — on any single-family lot, build a duplex or do a lot split by right with ministerial approval. Fourth: ADU law — every residential lot can add 1 ADU (up to 1,200 SF) + 1 JADU (up to 500 SF) regardless of zoning. The stacking math is the key to San Diego development: a base-zone 5-unit project can become 7 units with state density bonus, or 15+ units with Complete Communities. Always model the CCHS scenario — even if 40% affordability seems steep, the unlocked FAR often more than compensates.
Overlay Districts
Complete Communities Housing Solutions (CCHS)
San Diego's most powerful housing overlay. Opt-in parallel code that applies in Transit Priority Areas (within 0.5 mi of a major transit stop). Removes density limits entirely — FAR becomes the only constraint. Four tiers: Tier 1 (no FAR limit), Tier 2 (8.0 FAR), Tier 3 (6.5 FAR), Tier 4 (4.0 FAR). Requires 40% of pre-density-bonus units as affordable: 15% at 50% AMI, 10% at 60% AMI, 15% at 80% AMI. No parking minimums in transit areas (AB 2097). This overlay can multiply your development capacity 3-10x compared to base zoning. Check the CCHS FAR map before making any offer in San Diego.
Coastal Overlay Zone
Applies to properties within the Coastal Zone (roughly west of I-5 in many areas). Requires a Coastal Development Permit in addition to standard permits. The California Coastal Commission has appellate authority. Adds 3-12 months to entitlements. Key constraints: public access requirements, view corridor preservation, height limits that may override base zoning, and limits on demolition of visitor-serving or lower-cost housing. If your site is in the Coastal Zone, engage a coastal land use attorney before submitting.
Airport Influence Area (AIA)
Properties near San Diego International Airport (Lindbergh Field) and other airports face FAA height restrictions, noise contour limits, and avigation easement requirements. The Airport Land Use Compatibility Plan (ALUCP) can cap building heights below what zoning allows — some downtown parcels are limited to 200-500 ft based on FAA surfaces. Run an FAA Part 77 analysis before designing any project over 200 ft near the airport.
Community Plan Overlay
Each of San Diego's 50+ community planning areas has its own community plan that can modify base zone standards — especially height limits. Pacific Beach caps most buildings at 30 ft regardless of base zone. La Jolla has strict view corridor requirements. The community plan is often more restrictive than the base zone. Always check the applicable community plan before relying on base zone standards.
Transit Priority Area (TPA)
Half-mile radius around existing or planned major transit stops (trolley stations, rapid bus). TPAs unlock: no parking minimums (AB 2097), Complete Communities eligibility, CEQA streamlining (no VMT analysis for residential), and state density bonus. The trolley expansion (Mid-Coast, future Purple Line) is creating new TPAs that will increase density entitlements across the city. Buy near future stations before the TPA designation triggers land price increases.
Historic Resources — Mills Act Properties
San Diego has 300+ individually designated historic resources and several historic districts (Gaslamp Quarter, Mission Hills, South Park, Burlingame). Historic designation triggers a Certificate of Appropriateness requirement for exterior changes. Mills Act property tax reduction (40-60% savings) available in exchange for preservation. Demolition is extremely difficult. Adaptive reuse and additions are possible but require design review and often a conditional use permit.
Environmentally Sensitive Lands (ESL)
San Diego's Multi-Habitat Planning Area (MHPA) protects sensitive habitats — coastal sage scrub, vernal pools, wetlands, steep slopes (25%+). ESL regulations can remove 40-80% of a site from buildable area. An ESL survey is required before any development in mapped areas. Budget $15-30K for biological surveys and 3-6 months for regulatory review. Always check for MHPA adjacency — even properties outside the MHPA may face buffer requirements.
FEMA Flood Zones
San Diego River, San Diego Bay, and coastal areas have FEMA flood zone designations. Zone AE requires base flood elevation compliance and flood insurance. Zone X (shaded) has moderate risk. Flood zone designation affects foundation design, insurance costs, and financing terms. Mission Valley and parts of Pacific Beach are particularly affected. Check FEMA FIRM maps before making an offer.
Frequently Asked Questions
How do I check zoning for a specific property?
Use the City's online zoning map at sandiego.gov/development-services/zoning-maps or the interactive GIS portal. Enter an address to see the base zone, community plan area, and overlay districts. For what the zoning actually means for your site — permitted uses, setbacks, density, and development potential — that's what Nearby Property does. Enter any address and get the full property profile.
What is Complete Communities and should I care?
Yes, it's the single most important factor in San Diego development. Complete Communities Housing Solutions (CCHS) is an opt-in overlay that applies in Transit Priority Areas. It removes density limits and sets FAR as the only constraint — from 4.0 (Tier 4) to unlimited (Tier 1). The trade-off: 40% of pre-bonus units must be affordable. If your site is in a TPA, always model the CCHS scenario. The increased FAR frequently doubles or triples your project size, which more than offsets the affordable unit requirement.
Can I build an ADU in San Diego?
Yes, on any lot with an existing or proposed residential dwelling. California law (not local discretion) allows one ADU up to 1,200 SF and one Junior ADU up to 500 SF per lot. San Diego cannot deny a code-compliant ADU. Key rules: 4-ft side and rear setbacks for detached ADUs, 16-ft height limit (or matching primary structure), no parking required within 0.5 mi of transit. Construction cost runs $250-400/SF in San Diego. Typical rental income: $2,000-3,000/month depending on neighborhood and size.
How does SB 9 work in San Diego?
SB 9 allows two things by right on single-family lots: (1) build a duplex (two units on one lot), and (2) do an urban lot split creating two lots of at least 1,200 SF each. You can combine both — split the lot and build a duplex on each half = 4 units. Approval is ministerial (no hearing, no discretionary review). Key restrictions: not in historic districts, must be in an urbanized area (all of San Diego qualifies), owner must sign an affidavit of occupancy for lot splits. SB 9 adoption has been slow in San Diego — only ~23 projects submitted through 2024 — which means the market hasn't priced it in yet.
What's the state density bonus and how does it stack with CCHS?
California's density bonus law (Gov Code 65915) gives you 20-50% more units above base zoning in exchange for setting aside 5-44% of units as affordable, plus up to 5 development incentives (waivers of height, FAR, setbacks, parking). This stacks on top of Complete Communities — apply state density bonus to your CCHS-entitled unit count for the maximum yield. For example: base zone = 10 units, CCHS might triple that to 30 units, then state density bonus adds 50% = 45 units. The bonus law is a state mandate — the city cannot deny it if you meet the requirements.
Do I need to provide parking?
In many cases, no. AB 2097 (effective 2023) eliminates parking minimums for any project within 0.5 miles of a major transit stop. Combined with San Diego's extensive trolley and rapid bus network, this covers most urban development sites. Outside transit areas, parking requirements still apply but can be reduced through state density bonus incentives. Going zero-parking saves $30,000-60,000 per space in construction cost — on a 50-unit project near transit, that's $1.5-3M in savings.
What's the Coastal Overlay and how does it affect my project?
If your property is west of I-5 (roughly), it's likely in the Coastal Zone. You'll need a Coastal Development Permit, and the California Coastal Commission has appeal authority. Key impacts: community plan height limits often override base zoning (30-ft caps in beach communities), public access requirements for waterfront sites, and restrictions on demolishing affordable or visitor-serving uses. Coastal Zone projects take 6-12 months longer to entitle. Budget accordingly.
Get the full property profile for
any address in San Diego
Permitted uses, setbacks, density, buildable area, overlays, and nearby development activity — for a specific parcel, not just the district.