Dover, Delaware 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 33 districts.
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What's in the Dover dataset
Every field below is available for any Dover parcel, on the map and through the AI.
Zoning
- District code & full name
- Parcel boundary & APN
- All 33 districts mapped
Building controls
- Front setback
- Side setback
- Rear setback
- Building height
Overlays, hazards & AI
- Flood hazard & environmental layers
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Dover, Delaware 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. Dover's ordinance does not state permitted uses as citywide flags, so they are read from each district's own table rather than summarised here.
| Zone Code | Category | Area | Details |
|---|---|---|---|
R-20 One Family Residence | - | 2,552.5 ac | Standards & uses → |
IO Institutional Office | - | 1,389.7 ac | Standards & uses → |
R-8 One Family Residence | - | 1,246.2 ac | Standards & uses → |
ROS Recreational And Open Space | - | 973.1 ac | Standards & uses → |
Showing 4 of 33 districts
Start from what you're trying to build
Each one runs against the live Dover dataset and returns the districts, standards and approvals involved.
What does R-20 actually permit?
The full standards for one district, read straight from the source.
Run it →How is Dover zoned?
Dover regulates land through 33 zoning districts, and the residential system is built on a numbered one family series at 20, 10, 8 and 7, where the number states the lot size premise. One Family Residence at 20 is the largest district in the city at roughly 2,552 acres, with the 8 version second among residential at about 1,246.
Above the one family series sit two medium density districts and two general residence districts, plus a manufactured housing district. A Traditional Neighborhood Design district covering roughly 277 acres provides an explicit alternative to conventional subdivision layout, which is a deliberate tool rather than a variance path.
The employment side is substantial for a city of this size. Industrial Park Manufacturing covers roughly 967 acres, with a business and technology centre variant adding about 347 and a manufacturing district roughly 341. Institutional Office is the second largest district in the entire city at roughly 1,390 acres.
Commercial is graduated by format: community shopping center, regional shopping center, highway commercial, limited central commercial and commercial professional office. Zoning shopping centres by scale rather than treating retail as one category is a useful distinction for anyone assessing a site. Recreational Commercial covers roughly 751 acres and Recreational And Open Space about 973. This is pre-development intelligence, not legal advice - verify with the local planning department before acquisition.
Dover zoning: frequently asked questions
What do the numbers in Dover's residential districts mean?
They state the lot size premise for each one family district. The series runs at 20, 10, 8 and 7, with the 20 district the largest in the city at roughly 2,552 acres.
What is the Traditional Neighborhood Design district?
A district covering roughly 277 acres that provides an explicit alternative to conventional subdivision layout. Having it as a zoning district makes that form of development a defined option rather than something requiring a variance.
How large is the institutional and office presence?
Institutional Office is the second largest district in Dover at roughly 1,390 acres. Together with the commercial professional office district it gives the city substantial zoned office and institutional capacity.
How is retail zoned?
By format and scale: a community shopping center district, a regional shopping center district, highway commercial, limited central commercial and commercial professional office. That is a finer distinction than treating retail as a single category.
What industrial capacity does Dover have?
Industrial Park Manufacturing covers roughly 967 acres, a business and technology centre variant adds about 347, and a manufacturing district covers roughly 341. Together they make industry a significant share of the city's zoned land.
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Zoning data is pre-development intelligence, not legal advice. Verify with the Dover planning department before acquisition or design.