Half Moon Bay Zoning Intelligence
Zoning, permitted uses, ADU rules, and development potential for Half Moon Bay, California. 20 districts analyzed.
Explore Half Moon Bay parcels, zoning, and hazards
Search any Half Moon Bay address, inspect parcels and zoning on the live map, and ask the AI what you can build - right here.
How is Half Moon Bay zoned?
Permitted uses vary by district. Search a Half Moon Bay parcel on the map above to see exactly what you can build there.
- Total zoning districts20
- Residential districts7
- Commercial districts4
- Industrial districts1
Statewide law - applies to all California cities, not specific to Half Moon Bay.
- California state ADU lawApplies statewide
- SB-9 lot split eligibilityPer parcel review
- SB-79 (transit-oriented housing)Near transit, from Jul 2026
- Density Bonus Law (state)Eligible projects
- Local impact / permittingVerify with Half Moon Bay planning
What should developers know about Half Moon Bay zoning?
Half Moon Bay is a San Mateo County coastal city where open space, agriculture, and planned development define the land base far more than conventional residential lots. The Planned Unit Development district (PUD) is dramatically the largest at roughly 1,396 acres, and an Exclusive Floriculture district (A-1) of about 148 acres preserves the area's signature greenhouse agriculture. Add the open-space family of districts - Open Space Reserve (OS-R) at about 776 acres, plus Active, Passive, and Conservation variants - and an Urban Reserve (U-R) of roughly 315 acres, and it becomes clear that large-lot, master-planned, and conservation-oriented land vastly outweighs the city's compact developed core.
That core is a low-density coastal town built on tiered single-family districts (R-1 at 5,000-square-foot lots up through R-1-B-3 at 10,000-square-foot lots), with limited Two Family (R-2) and Multiple Family (R-3) capacity. Commercial activity concentrates downtown in Commercial Downtown (C-D, about 71 acres), Commercial General (C-G), and a Commercial Visitor Serving (C-VS) district supporting the tourism economy. As a coastal city, Half Moon Bay operates under a Local Coastal Program, so most development - especially on agricultural, open-space, and PUD land - will face coastal review and likely a coastal development permit. The dominance of PUD zoning also means entitlements are frequently negotiated parcel by parcel rather than read straight from a base district. This is pre-development intelligence, not legal advice - verify with the local planning department before acquisition.
Run a full feasibility study for any Half Moon Bay parcel - zoning, FAR, height limits, and development potential in seconds.
Try ArchiWise free →Half Moon Bay, California Zoning Districts: What Do They Mean?
Zoning districts are areas regulated by specific laws that determine land use, building types, and development rules. Each district below shows its zone type and which uses it permits.
| Zone Code | Zone Type | Permitted Uses | Area |
|---|---|---|---|
A-1 Exclusive Floriculture | - | - | 147.9 ac |
C-D Commercial Downtown | - | - | 70.9 ac |
C-G Commercial General | - | - | 44.8 ac |
C-R Commercial Residential | - | - | 4.5 ac |
What are the building controls in Half Moon Bay?
Setback, height, FAR, lot area, and density controls enforced across Half Moon Bay zoning districts.
- Far control
- Lot control
- Multi control
- Density control
- Coverage control
- Pervious control
- Lot width control
- Rear setback control
- Side setback control
- Front setback control
- Building height control
Cities near Half Moon Bay
Half Moon Bay zoning: frequently asked questions
Why is so much of Half Moon Bay zoned Planned Unit Development?
The PUD district covers roughly 1,396 acres, by far the largest in the city, meaning a substantial portion of developable land is governed by negotiated, project-specific plans rather than standard base-district rules. For developers, that means entitlements are typically established through an approved development plan. Review the governing PUD plan for any target parcel before assuming what is allowed.
How does coastal regulation affect projects in Half Moon Bay?
As a coastal city, Half Moon Bay is governed by a Local Coastal Program, and most development - particularly on the extensive open-space, floriculture, and PUD lands - will require coastal review and likely a coastal development permit. This is often the controlling constraint on timing and feasibility. Confirm your parcel's coastal-zone status and permit path with planning staff early.
What does the Exclusive Floriculture (A-1) district mean for development?
The A-1 district of about 148 acres protects the area's greenhouse and floriculture agriculture, limiting non-agricultural development. Conversion to other uses would generally require rezoning and coastal review, both of which face high scrutiny. Treat A-1 land as agricultural-preservation land rather than a near-term development target unless you confirm otherwise.
Where is multifamily housing possible in Half Moon Bay?
Multifamily capacity is modest and concentrated in the R-2 (Two Family) and R-3 (Multiple Family) districts, supplemented by the Mobile Home Park (MHP) district. The single-family R-1 series, tiered by minimum lot size from 5,000 to 10,000 square feet, dominates the residential base. Higher-density opportunities may also arise within PUD plans, subject to coastal review.
Do state housing laws like ADU rules apply in a coastal city like this?
Yes. State ADU law applies citywide and generally overrides conflicting local limits, but in the coastal zone an ADU can still require coastal review under the Local Coastal Program. SB-9 may also apply to eligible single-family parcels, again subject to coastal constraints. Verify whether a coastal development permit is triggered and confirm objective standards with the planning department.
Analyze any Half Moon Bay parcel in 60 seconds
Enter any Half Moon Bay address to get full zoning analysis, FAR, height limits, and development potential.
Zoning data is pre-development intelligence, not legal advice. Verify with the Half Moon Bay planning department before acquisition or design.