Can I replace my own plumbing fixtures in Virginia, or do I need a plumber?

In the house you own and live in, you can usually replace your own plumbing fixtures in Virginia. The state's contractor licensing law exempts an owner working on their own primary residence, and the state building code needs no permit to replace a fixture as long as the water supply, drain and vent piping is not altered. Two things change the answer: paying someone else to do the work, and any job that moves or adds pipe.

What the law lets an owner do

Virginia's contractor licensing chapter does not apply to "Any person who performs or supervises the construction, removal, repair, or improvement of no more than one primary residence owned by him and for his own use during any 24-month period".^[1] The same section says an owner who repairs or improves residential units they own that are subject to the Virginia Residential Landlord and Tenant Act is exempt as well.^[1]

The exemption is not a free pass on quality. Under the same section, an owner working under either exemption must still comply with the Uniform Statewide Building Code, and a violation of that requirement is a Class 1 misdemeanor.^[1] In practice, that means doing the work to code even when no inspector looks at it.

When a permit is and is not needed

The building code lists, among ordinary repairs that need no permit application: "Replacement of plumbing fixtures and well pumps in all groups without alteration of the water supply and distribution systems, sanitary drainage systems, or vent systems."^[4] The section adds that the exemption does not excuse the work from the code's other requirements.^[4]

On the other side of the line, a permit is required for installations or alterations involving the water supply and distribution system, sanitary drainage system, or vent system.^[4] Roughly, that splits fixture jobs like this:

• Usually no permit: a new faucet on the same sink, a new showerhead or aerator, a new toilet on the existing flange and supply, a new vanity sink connected to the same drain and supply.
• Usually a permit: moving a sink or toilet, adding a fixture, adding a shower or tub, or changing drain or vent piping.
• Ask first: anything else behind the wall, such as a shower valve. Your building official can tell you whether the job counts as an alteration.

If you want someone to check your work, you can ask. The code says that when an owner or an owner's agent requests that a permit be issued for any of the following, then a permit shall be issued and any related inspections shall be required.^[4] Your city or county building office handles it; for example, Montgomery County's Building Inspections Office enforces the Virginia Uniform Statewide Building Code within the county, and its inspectors inspect all construction in the unincorporated areas.^[7] Towns and cities may run their own office.

What makes a fixture job homeowner-sized

Most fixture swaps go well when three things are true: the water can be shut off at the fixture, the new part connects the same way as the old one, and nothing behind the wall needs touching.

Shut the water off before you start. For its own faucets, Moen puts it this way: "Any repairs done to a Moen faucet require the water supply to be shut off. Failure to do so could result in flooding or injury."^[8] Fixture shutoffs are generally under the sink, in a closet access behind a shower or in an access panel around the tub, and sometimes the only shutoff is the home's main valve.^[8]

For a start, see how to replace a showerhead, the simplest of these jobs.

Stop and call a pro if

• A shutoff valve will not close fully, or leaks at its stem once you turn it.
• Connections are corroded or seized, or a pipe moves in the wall or floor when you turn a fitting.
• The new fixture needs a different drain, supply location or hole layout, which turns a swap into an alteration that needs a permit.
• You find water damage, soft flooring around a toilet, or a leak inside a cabinet or wall.
• The job touches a water heater, gas line or electrical circuit. Those are not fixture swaps; see whether a water heater replacement needs a permit.

When you hire someone

The moment you pay someone, Virginia's licensing law applies to them. The Code says: "No person shall engage in, or offer to engage in, contracting work in the Commonwealth unless he has been licensed under the provisions of this chapter."^[2] Under the Code's definitions, a Class C contractor licence covers a single contract or project over $1,000 but less than $30,000, and the Board for Contractors must require a master tradesman licence as a condition of licensure for plumbing contractors.^[3]

The individual doing the work is licensed too. DPOR's Board for Contractors regulates individual tradesmen who engage in the trades of electrical; plumbing; heating, ventilation, and air conditioning (HVAC); gas fitting, and it states that state certification of these trades is mandatory, not optional.^[5] There is also a licence aimed at homes: since April 1, 2025, a Residential Plumbing licence has allowed plumbers to work in residential structures only, with no commercial work.^[5]

The Board's consumer guide has the practical checks. It warns: "A license number in an advertisement or on a business card does not necessarily mean the contractor's license is valid."^[6] It reminds owners that "Virginia law requires all licensed contractors to provide a written contract for residential work."^[6] And its rule of thumb for a down payment is an initial deposit of no more than 10% of the total price or $1,000, whichever is less.^[6] Our guide to checking a contractor's licence walks through the lookup.

Hiring on Loclis

Loclis accepts plumbing quotes only from licensed businesses, at any job size, and its directory shows each one's DPOR licence number and class. You can find plumbers in Blacksburg, browse fixture installation, read what plumbers charge to install fixtures, or see all plumbing answers.

If the job is more than a swap, describe the plumbing job once and licensed local plumbers quote it.