Portsmouth, New Hampshire 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 29 districts.
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Portsmouth, New Hampshire 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. Portsmouth'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 |
|---|---|---|---|
SRB Single Residence B | - | 1,551 ac | Standards & uses → |
NRP Natural Resource Protection | - | 1,275.2 ac | Standards & uses → |
SRA Single Residence A | - | 953.8 ac | Standards & uses → |
G1 Gateway Corridor | - | 801.4 ac | Standards & uses → |
Showing 4 of 29 districts
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The full standards for one district, read straight from the source.
Run it →How is Portsmouth zoned?
Portsmouth regulates land through 29 zoning districts, and aviation accounts for four of them: Airport at roughly 412 acres, Airport Business Commercial at about 476, Airport Industrial at roughly 208, and a Pease Industrial district at about 187.
That cluster reflects the former air force base that became a business and industrial park, and zoning it through four distinct districts rather than one shows the city managing a large single-owner redevelopment carefully.
The Character Districts are the second distinguishing framework. Numbered 4 and 5 with a West End variant, they regulate by the character of the place rather than by use, and their small size, roughly 108 acres together, means they are applied precisely.
Natural Resource Protection is the second largest classification at roughly 1,275 acres, ahead of every residential district except Single Residence B.
The residential districts are lettered: Single Residence A and B covering roughly 2,505 acres together, and General Residence A, B and C covering about 547. A combined Garden Apartment and Mobile Home Park district covers roughly 338 acres, pairing two housing forms in one designation.
Gateway districts at corridor and center levels cover roughly 877 acres. A Waterfront Industrial district covers about 145 acres and an Office Research district roughly 273. This is pre-development intelligence, not legal advice - verify with the local planning department before acquisition.
Portsmouth zoning: frequently asked questions
Why does Portsmouth have four aviation districts?
Airport at roughly 412 acres, Airport Business Commercial at about 476, Airport Industrial at roughly 208 and Pease Industrial at about 187. The cluster reflects a former air force base redeveloped as a business and industrial park.
What are the Character Districts?
Districts numbered 4 and 5, with a West End variant, that regulate by the character of the place rather than by use. Their small size, roughly 108 acres together, means they are applied precisely.
What is the Natural Resource Protection district?
The second largest classification at roughly 1,275 acres, ahead of every residential district except Single Residence B. It marks land protected for its natural resources.
How are residential districts lettered?
Single Residence A and B cover roughly 2,505 acres together, and General Residence A, B and C cover about 547. A combined Garden Apartment and Mobile Home Park district adds roughly 338 acres.
What are the Gateway districts?
A Gateway Corridor district at roughly 801 acres and a Gateway Center district at about 76, together the city's framework for its main approach routes.
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Zoning data is pre-development intelligence, not legal advice. Verify with the Portsmouth planning department before acquisition or design.