Do I need a permit for window or exterior door replacement in Cary?
It depends. Whether window or exterior door replacement needs a permit in Cary comes down to the details of your project.
Under NCGS 160D-1110, a simple like-for-like window or door swap in a one- or two-family dwelling that costs $40,000 or less and does not affect structure, egress, or life safety can fall under the minor-work exemption, but the moment you resize an opening, alter a header, or change an egress window a permit is required. The exemption does not cover any structural, electrical, plumbing, or mechanical work associated with the change. The Town of Cary lists replacing windows and doors in existing openings as work that does not require a building permit, so a straight swap into the same opening on a one- or two-family home generally is not permitted here. Installing new windows or skylights in new or modified openings does require a permit under Cary's rules, so cutting a new opening or enlarging an existing one crosses into permitted work. When in doubt, confirm the exact scope with Cary Inspections and Permits (dial 311 in town or 919-469-4000), since a false assumption that no permit is needed is the risky direction. Enlarging an opening, moving it, or cutting a new one is structural work. Exemptions that cover replacing a unit in its existing opening do not reach it, so a permit is required. Changing an opening usually means a new or resized header, and many jurisdictions want a beam detail or engineering before they will issue, so allow for that in the schedule. Wake County's own permitting office is Wake County Permits and Inspections. It issues permits for the unincorporated county, and in North Carolina the county is often the building authority even inside city limits, so confirm which applies to your address. A like-for-like swap under $40,000 with no structural framing change can be exempt; enlarging or moving an opening is structural and is not.
Documents you may need
- Permit applicationSometimes required
- Description of work (like-for-like replacement vs. new or resized opening)required
- Residential building permit application through the Town of Cary electronic plan review portal when an opening is new or modifiedSometimes required
- Plot plan or as-built survey when the building footprint changesSometimes required
- Details of the new or enlarged opening and any header or structural changeSometimes required
Possible inspections
- Rough / framing inspection when an opening is altered or headers are changed
- Final inspection
- Framing inspection where an opening is created or modified
- Final building inspection for permitted openings
- Framing inspection for the altered opening
Frequently asked questions
- Do I need a permit for window or exterior door replacement in Cary?
- It depends. Whether window or exterior door replacement needs a permit in Cary comes down to the details of your project. Under NCGS 160D-1110, a simple like-for-like window or door swap in a one- or two-family dwelling that costs $40,000 or less and does not affect structure, egress, or life safety can fall under the minor-work exemption, but the moment you resize an opening, alter a header, or change an egress window a permit is required. The exemption does not cover any structural, electrical, plumbing, or mechanical work associated with the change. The Town of Cary lists replacing windows and doors in existing openings as work that does not require a building permit, so a straight swap into the same opening on a one- or two-family home generally is not permitted here. Installing new windows or skylights in new or modified openings does require a permit under Cary's rules, so cutting a new opening or enlarging an existing one crosses into permitted work. When in doubt, confirm the exact scope with Cary Inspections and Permits (dial 311 in town or 919-469-4000), since a false assumption that no permit is needed is the risky direction. Enlarging an opening, moving it, or cutting a new one is structural work. Exemptions that cover replacing a unit in its existing opening do not reach it, so a permit is required. Changing an opening usually means a new or resized header, and many jurisdictions want a beam detail or engineering before they will issue, so allow for that in the schedule. Wake County's own permitting office is Wake County Permits and Inspections. It issues permits for the unincorporated county, and in North Carolina the county is often the building authority even inside city limits, so confirm which applies to your address. A like-for-like swap under $40,000 with no structural framing change can be exempt; enlarging or moving an opening is structural and is not.
- Who issues the permit in Cary?
- The local building department for Cary handles permitting. This page lists its contact details and online portal. Your mailing city is not always the permitting authority, so confirm the jurisdiction before you apply.
- How do I find out the exact requirements for my project?
- Run the free PermitRoadmap check for your specific project and answers. It returns the likely permits, documents, inspections, and next steps, each linked to its official source.
PermitRoadmap is an independent informational service and is not affiliated with any city, county, state agency, or permitting authority. Results are informational and do not replace confirming requirements with the local permitting authority.