Plumbing Permit in Prince William County, Virginia

Permit required?

Sometimes, depending on the project.

Typical threshold: building permit required for alterations to supply or drain systems; like-for-like fixture replacement without altering systems is exempt.

When a permit is usually needed

For new plumbing or alterations to supply or drain systems; not required for like-for-like fixture replacements in place

Permit cost and what affects it

Fees are set by the locality and are not published here. See the official fee schedule or contact the office for current amounts.

Permit costs generally depend on the project valuation, the scope of work, and the inspections required. Ask the office how the fee is calculated for your specific project.

Official fee schedule

Where to apply

• Official permit page
• Permit portal

Frequently asked questions

Do you need a plumbing permit in Prince William County?

A plumbing permit is required in Prince William County for any work involving alterations to the water supply or drain, waste, and vent systems. Replacing existing plumbing fixtures such as toilets, tubs, or sinks without altering the supply or drain systems does not require a permit. Applications are submitted through the county ePortal. The typical threshold is building permit required for alterations to supply or drain systems; like-for-like fixture replacement without altering systems is exempt. Always confirm with the office before starting.

How much does a plumbing permit cost in Prince William County?

Fees are set by Prince William County and are not published here. See the official fee schedule for current amounts.

How long does a plumbing permit take in Prince William County?

Processing time for a plumbing permit in Prince William County varies by workload and project scope. Contact the Prince William County Building Development Division for a current estimate.

Where do you apply for a plumbing permit in Prince William County?

You can apply through the Prince William County permit portal or contact the Prince William County Building Development Division directly. The links are listed on this page.

Official sources

• https://www.pwcva.gov/department/building-development-division/do-i-need-permit
• https://www.pwcva.gov/department/building-development-division