Land Use and Zoning Regulations

Zoning Ordinance

The purpose of this Ordinance is to promote the health, safety and the general welfare of Portsmouth and its region in accordance with the City of Portsmouth Master Plan.

Click here to view the Zoning Ordinance as amended through March 4, 2019.  Check the "Current Zoning Amendments" page for any changes currently under review by the Planning Board or City Council.

Zoning Maps

City of Portsmouth Zoning Maps that show the city broken down by districts, building height standards, and special requirements for facade types, front lot line buildout, and uses.  You can also view this information in the City's online mapping program -- MapGeo.

Download Zoning Maps (As Amended 2/4/2019)


The City's sign regulations are included in Article 12 of the Zoning Ordinance.  There are very few regulations that apply to residential properties, however, this document answers some frequently asked questions for property owners in residential districts.  Please contact the Planning Department at 603-610-7216 for more information about sign regulations in the City and for information on applying for sign permits.

Site Plan Review Regulations

There are many purposes for Site Plan Review Regulations, and it is important to understand the uses requiring Site Plan Approval, the application and review process, and other related standards.

Read the Site Plan Review Regulations

Subdivision Rules and Regulations

Consistent with the purpose of the State enabling legislation (RSA 36-21), these regulations are intended to insure the orderly development of the City of Portsmouth by providing that subdivisions are served with adequate utilities and safe, convenient access and with a desirable and attractive living environment.

Continue reading the Subdivision Rules and Regulations