Stormwater Permits

Stormwater Management Permits

Construction activities of any kind that disturb greater than one (1) acre (43,560 square feet) or are part of a common plan of development or sale that will disturb greater than one (1) acre must have an approved stormwater management permit or a waiver of the requirement for a stormwater management permit from the Northampton Department of Public Works.

The requirements and procedures for stormwater management permits are defined by the Stormwater Management Ordinance, Chapter 281 of the City’s Code of Ordinances.

Technical specifications and standards for the design of acceptable stormwater management systems are specified in the current edition of the Massachusetts Stormwater Handbook.

Permit Forms

Permit Fees

Project Type
Permit Review and Inspection Fee
Residential Site (1 unit and 1-5 Acres Disturbed)
$700
Residential Site (1 unit and greater than 5 Acres Disturbed)
$1,100
Minor Residential Subdivision (1 lot and disturbing 1 to 5 acres of land)
$700 or $1 per linear foot of roadway or common driveway (whichever is greater)
Residential Subdivision (2 or more units in a common plan of development)
$2,000 or $2 per linear foot of roadway or common driveway (whichever is greater)
Other Residential such as condominiums, townhouse or retirement development (2 or more units in a common plan of development)
$700 per acre disturbed (maximum of $5,000)
Commercial Subdivision
$2,000 or $2 per linear foot of roadway or common driveway (whichever is greater)
Commercial or Industrial Site
$700 per acre disturbed (maximum of $5,000)
Land Disturbance Only (No change in site use, buildings and impervious surface area). May include reconstruction of parking lots, roads, and driveways; utility work; and lawn and landscaping work.)
$100 per acre disturbed

Permit Archive

Stormwater Management System Design Resources