Monrovia, California Zoning Map
Zoning, overlays and hazards on every parcel — and an answer to what the code actually lets you build. Compiled from current zoning data for all 59 districts.
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What's in the Monrovia dataset
Every field below is available for any Monrovia parcel, on the map and through the AI.
Zoning
- District code & full name
- Parcel boundary & APN
- All 59 districts mapped
Building controls
- Maximum building height
- Floor area ratio (FAR)
- Front setback
- Side setback
Overlays, hazards & AI
- Flood hazard & environmental layers
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- Powered by live parcel data
Where uses are permitted in Monrovia
Share of Monrovia's zoned land where each use is permitted.
- Single-family
- 21.83%
- Multi-family
- 8.12%
- ADU
- 14.23%
- Retail
- 3.53%
- Eating & drinking
- 4.15%
- Office
- 6.38%
- Hotel / motel
- 1.86%
- Industrial
- 1.63%
- Storage & warehouses
- 7.30%
Monrovia, 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 | Category | Area | Details |
|---|---|---|---|
1-DU-10 1 Dwelling Unit 10 Acres | - | 10.1 ac | Standards & uses → |
1-DU-2.5 1 Dwelling Unit 2.5 Acres | - | 19.9 ac | Standards & uses → |
1-DU-3 1 Dwelling Unit 3 Acres | - | 3.6 ac | Standards & uses → |
1-DU-5 1 Dwelling Unit 5 Acres | - | 61.3 ac | Standards & uses → |
Showing 4 of 59 districts
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Each one runs against the live Monrovia dataset and returns the districts, standards and approvals involved.
What should developers know about Monrovia zoning?
Monrovia is a foothill community in the San Gabriel Valley where the Angeles National Forest (ANF, ~3,579 acres) and the Hillside Wilderness Preserve (HWP, ~1,216 acres) together comprise the largest land categories in the city. That footprint of natural open space shapes every development conversation: the buildable, urban portion of Monrovia is far smaller than the total city boundary suggests. Among developable districts, Planned Development (PD) designations dominate, with over 20 individually numbered PD zones ranging from under an acre to nearly 74 acres (PD-12 at 73.82 acres being the largest), which means that most significant residential development since mid-century has come through site-specific PD approvals rather than standard zoning.
The commercial layer is relatively compact. Historic Downtown Commercial (HCD, ~10 acres) anchors the Old Town Monrovia corridor, while Commercial Regional Subregional (CRS, ~57 acres) addresses larger retail and service uses. Manufacturing (M, ~132 acres) and Office Research And Development Light Manufacturing (O/RD/LM, ~50 acres) support employment uses south of the downtown. For residential investors, the hillside-adjacent low-density zones (1-DU-2.5 through 1-DU-10) signal estate-scale lots with significant site constraints. Building controls here cover FAR, lot area, density, coverage, perviousness, setbacks, and height - a full suite that reflects both hillside sensitivity and historic neighborhood character.
This is pre-development intelligence, not legal advice - verify with the local planning department before acquisition.
Monrovia zoning: frequently asked questions
What makes Monrovia's Planned Development zones significant for builders?
With more than 20 numbered PD districts, Planned Development is the dominant mechanism for residential project delivery in Monrovia. Each PD is individually entitled, meaning standards - density, setbacks, product type - vary by district rather than following a single base zone. PD-12 is the largest at roughly 74 acres, while several PDs are under 5 acres and represent infill-scale parcels. Buyers of PD-zoned land should verify the specific approved plans and any remaining entitlement capacity.
How do the hillside and open space districts constrain development in Monrovia?
The Angeles National Forest (ANF) and Hillside Wilderness Preserve (HWP) together account for nearly 4,800 acres, most of which is off-limits to private development. The Hillside Recreation (HR, ~342 acres) district exists as a limited transition zone. Properties adjacent to or within hillside classifications face constraints tied to slope, grading, fire hazard, and perviousness - all of which are tracked through the city's building control categories.
What commercial options exist near Monrovia's downtown?
Historic Downtown Commercial (HCD) covers roughly 10 acres along the Old Town corridor and is oriented toward pedestrian-scale retail, dining, and mixed-use. Commercial Regional Subregional (CRS, ~57 acres) accommodates larger-format retail and service commercial. Neighborhood Commercial (NC, ~34 acres) serves local retail needs at the neighborhood scale. Business Enterprise (BE, ~19 acres) allows for a blend of office and commercial uses.
Are ADUs permitted in the single-family and low-density residential zones?
Yes - California state ADU law applies citywide, including in the large-lot residential zones (1-DU-2.5, 1-DU-5, 1-DU-10) and the various PD districts with residential classifications. On hillside-adjacent parcels, objective design standards tied to grading, coverage, and perviousness will constrain ADU siting. Monrovia's building controls include coverage and pervious-surface categories that factor into ADU feasibility review.
What industrial and R&D employment uses are present in Monrovia?
Manufacturing (M, ~132 acres) provides the heaviest industrial capacity, while Office Research And Development Light Manufacturing (O/RD/LM, ~50 acres) targets tech-adjacent or light-industrial tenants. Both districts sit south of the downtown and freeway-accessible, consistent with the San Gabriel Valley's industrial corridor pattern. The O/RD/LM classification is particularly relevant for biotech or advanced manufacturing tenants seeking more flexible space than standard M zoning.
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Zoning data is pre-development intelligence, not legal advice. Verify with the Monrovia planning department before acquisition or design.