Rio Dell, 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 11 districts.
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What's in the Rio Dell dataset
Every field below is available for any Rio Dell parcel, on the map and through the AI.
Zoning
- District code & full name
- Parcel boundary & APN
- All 11 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 Rio Dell
Share of Rio Dell's zoned land where each use is permitted.
- Single-family
- 64.40%
- Multi-family
- 32.67%
- ADU
- 6.21%
- Retail
- 31.17%
- Eating & drinking
- 6.26%
- Office
- 4.83%
- Hotel / motel
- 46.38%
- Industrial
- 5.31%
- Storage & warehouses
- 36.43%
Rio Dell, 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 |
|---|---|---|---|
CC Community Commercial 2000 Square Feet | - | 49.8 ac | Standards & uses → |
IC Industrial Commercial 20000 Square Feet | - | 87.4 ac | Standards & uses → |
NC Neighborhood Center 2000 Square Feet | - | 14.1 ac | Standards & uses → |
NR Natural Resources | - | 317 ac | Standards & uses → |
Showing 4 of 11 districts
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Each one runs against the live Rio Dell dataset and returns the districts, standards and approvals involved.
What should developers know about Rio Dell zoning?
Rio Dell is a small Humboldt County city with 11 zoning districts covering a distinctive mix of resource-oriented, residential, and commercial land uses. The largest district by area is Urban Residential (UR) at 443.67 acres, followed by the Rural 5-Acre (R) district at 346.58 acres and Natural Resources (NR) at 316.99 acres - together these three zones shape most of the city's footprint and signal a low-density, resource-proximate development environment. The Industrial Commercial (IC) district at 87.43 acres and Community Commercial (CC) at 49.78 acres anchor the commercial and industrial base, while the Residential Multifamily (RM) district at just 14.98 acres reflects limited higher-density housing capacity.
For developers, the small RM zone means multifamily opportunities are constrained and competitive; infill within Urban Residential carries the most realistic path to new housing. The Town Center (TC) district at 15.69 acres and Neighborhood Center (NC) at 14.12 acres indicate a modest but distinct mixed-use core. Building controls include FAR, lot, density, coverage, pervious surface, setback, and height parameters - a full suite that will govern project feasibility across all districts. The Natural Resources designation covering over 316 acres signals meaningful environmental review requirements for any adjacent parcels.
This is pre-development intelligence, not legal advice - verify with the local planning department before acquisition.
Rio Dell zoning: frequently asked questions
What zoning districts in Rio Dell allow multifamily housing?
The RM (Residential Multifamily) district is the designated multifamily zone, covering approximately 14.98 acres. That limited footprint means competition for infill sites is high. California ADU laws also extend multifamily options into single-family and other residential zones, so consulting the zoning code for overlay permissions is advisable.
How does the Natural Resources district affect development in Rio Dell?
The NR district covers 316.99 acres and is oriented toward resource protection rather than urban development. Parcels within or adjacent to this designation typically face environmental review requirements and may have restricted development rights. Due diligence should include checking for NR boundaries before any acquisition near the city's edges.
What does the Urban Residential zone allow and how does it differ from Suburban Low?
UR (Urban Residential) is the city's largest district at 443.67 acres, while Suburban Low (S) covers 249.81 acres with a 1-acre minimum lot size. UR generally supports closer-spaced single-family uses than Suburban Low, though exact densities are defined in the city's development code. Investors targeting infill housing should focus analysis on UR parcels.
Is there industrial land available in Rio Dell for logistics or manufacturing?
The IC (Industrial Commercial) district at 87.43 acres is the city's primary location for industrial and commercial-industrial hybrid uses. City stats indicate processing facilities, warehousing, and manufacturing are active uses in this zone. For any industrial acquisition, confirm permitted uses and performance standards with Rio Dell's planning department.
How does Rio Dell's Town Center district work for mixed-use or retail development?
The TC (Town Center) district covers 15.69 acres and appears designed to concentrate pedestrian-oriented retail, services, and community uses. Building controls include FAR and height, which will determine project intensity. Given the small acreage, available parcels are limited and redevelopment of existing structures may be more viable than ground-up development.
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Zoning data is pre-development intelligence, not legal advice. Verify with the Rio Dell planning department before acquisition or design.