Repiping in Chantilly, VA

What kind of pipe does a Chantilly home usually have?

Chantilly grew around the Route 50 and Route 28 interchange, with neighborhoods such as Greenbriar and Franklin Farm built mostly from the 1970s onward. Homes from that period were plumbed with copper, and some from the late 1970s into the mid-1990s used gray polybutylene, which is known for failing at the fittings. Townhouses and single-family homes from the 1990s may already have some PEX from repairs. Looking at the pipe near the water heater and under the kitchen sink usually tells you what you have.

Is the line from the meter my responsibility?

Yes, past the meter. Fairfax Water supplies Chantilly and owns the service line up to and including the meter; the customer owns the line after it. If that buried line is original and the house is being repiped anyway, replacing it at the same time saves a second round of digging. Fairfax Water also keeps a service line material inventory and asks owners to report their side through its Lead Free Fairfax survey. Its Potomac plant results show hardness averaging about 7.5 grains per gallon, so expect some scale on valves and fittings over the years.

Who issues the permit?

Chantilly is unincorporated, so Fairfax County Land Development Services handles permits through its PLUS online system. The County lists permits as required for new, repaired or relocated plumbing, with an exemption for like-for-like fixture replacement in the same spot. A repipe goes well beyond that, so the plumber should pull the permit and schedule the inspection before walls are closed up.

One local note

If your Chantilly home is a townhouse in an association, shared walls and common shutoffs can complicate a repipe. Check the association's rules on work hours and notice to neighbors, and ask the plumber how the new lines will be routed so that work stays inside your unit. Detached homes with unfinished basements are the simplest case, since new trunk lines can run along the joists with short drops to each fixture.

If you spot gray plastic pipe with metal crimp bands, mention it when you call. Polybutylene tends to fail without much warning, so many owners choose to replace it before a leak rather than after one, especially in upstairs bathrooms where a failure can damage the ceiling below.