Nashua New Hampshire Sewer, Street Opening, and Occupancy Approval Guide

Nashua residential projects can need final building approvals plus DPW or Engineering sign-offs, and sewer repairs may trigger revised sewer permits or street opening permits.

Permit takeaway

Nashua says residential certificates of occupancy require final approvals from building inspectors and, in some cases, approvals from DPW and Engineering.

Zoning and placement

Sewer repairs that cross the property line, occur in public right-of-way, or involve public sewer connections can bring Engineering and street-opening requirements into the project.

Building and trade review

For single-family or two-family homes, owners are responsible for building sewer repairs from the building to the property line; work beyond the property line can require city review and may involve revised sewer permits.

Call before applying when

Call before starting sewer, driveway, street-opening, or occupancy-related work if construction goes beyond the property line, touches sidewalk or street areas, or final approvals require DPW or Engineering.

Documents to prepare

• Permit number
• Final inspection approvals
• Camera inspection if sewer failure is claimed
• Revised sewer permit when needed
• Street Opening Permit when work enters sidewalk or street

Inspection planning

• Schedule final building inspection
• Coordinate DPW or Engineering approvals when required
• Submit sewer evidence if needed
• Apply for revised sewer or street opening permit
• Keep CO approval records

Official sources

• Nashua Certificate of Occupancy FAQ
• Nashua Property Residential or Commercial Sewer Guidance
• Nashua Building Safety Department

This guide is a planning summary. Always verify the current requirements with the local office before starting work.