Baltimore, Maryland 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 66 districts.
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Zoning
- District code & full name
- Parcel boundary & APN
- All 66 districts mapped
Building controls
- Front setback
- Side setback
- Rear setback
- Building height
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Baltimore, Maryland 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. Baltimore'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 |
|---|---|---|---|
OS Open Space | - | 6,995.7 ac | Standards & uses → |
R-6 Row House And Multifamily Residential | - | 6,277 ac | Standards & uses → |
MI Maritime Industrial | - | 5,482.2 ac | Standards & uses → |
I-2 General Industrial | - | 4,825.7 ac | Standards & uses → |
Showing 4 of 66 districts
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Each one runs against the live Baltimore dataset and returns the districts, standards and approvals involved.
What does OS actually permit?
The full standards for one district, read straight from the source.
Run it →How is Baltimore zoned?
Baltimore regulates land through 66 zoning districts, and its residential naming is unusually honest about the city's built form. Four districts are labelled Row House And Multifamily Residential, coded R-5 through R-8, together covering roughly 15,839 acres. That is more than every detached residential district combined, and it states plainly that the rowhouse is Baltimore's defining housing type.
The detached districts run R-1 through R-4 with lettered variants, together covering roughly 9,730 acres.
Maritime Industrial is the third largest classification at roughly 5,482 acres, ahead of every industrial district. In a port city that ranking is the essential context, and an Industrial Mixed Use district at about 495 acres provides a transitional category between the working waterfront and other uses.
The campus districts are the other distinguishing feature. Two Educational Campus districts cover roughly 1,189 acres between them and a Hospital Campus district about 605. Zoning universities and hospitals as their own campus classifications rather than as institutional exceptions makes those large landholdings explicit.
Open Space is the largest classification at roughly 6,996 acres. The downtown is divided into subdistricts, with the core subdistrict covering roughly 711 acres. An Office Industrial Campus district covers about 438 acres. This is pre-development intelligence, not legal advice - verify with the local planning department before acquisition.
Baltimore zoning: frequently asked questions
Why are four districts called Row House And Multifamily?
Because the rowhouse is Baltimore's defining housing type. Those four districts, coded R-5 through R-8, cover roughly 15,839 acres together, more than every detached residential district combined.
How significant is maritime industrial land?
Maritime Industrial covers roughly 5,482 acres, the third largest classification and ahead of every other industrial district. An Industrial Mixed Use district at about 495 acres provides a transitional category alongside it.
How are universities and hospitals zoned?
Through dedicated campus districts. Two Educational Campus districts cover roughly 1,189 acres between them and a Hospital Campus district about 605, making those large landholdings explicit rather than treating them as institutional exceptions.
Which is the largest district?
Open Space at roughly 6,996 acres, ahead of the largest row house and multifamily district at about 6,277 and Maritime Industrial at roughly 5,482.
How is downtown zoned?
Through subdistricts rather than a single central district, with the downtown core subdistrict covering roughly 711 acres. That allows different standards within the core.
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Zoning data is pre-development intelligence, not legal advice. Verify with the Baltimore planning department before acquisition or design.