Why a single number does not exist
A repipe replaces the supply lines that carry water to every fixture. The work scales with the number of fixtures, the distance between them and how hard the pipe is to reach. A small single-story house with an open crawlspace is a different project from a two-story house with finished walls and a slab.
Anyone who quotes a price over the phone without asking about those things is quoting a guess. A fair estimate follows a walk-through.
The factors that move the price
- Pipe material. Copper and PEX differ in material cost, labor and how long each is expected to last.
- Number of fixtures. Each bathroom, kitchen, laundry and hose bib is a run and a connection.
- Access. Open attics and crawlspaces are faster. Finished walls need cutting and patching.
- House layout. A compact plan needs less pipe than a spread-out one.
- Wall and ceiling repair. Some quotes include patching and paint, others stop at the pipe.
- Permit and inspection. Fees and scheduling are part of the project.
- Fixtures and valves. Replacing old shutoffs and supply stops during the job adds parts.
Want a written quote for your house? Call to book a survey.
Call (650) 860-1670| Line item | Ask quote A | Ask quote B |
|---|---|---|
| Pipe material and size | Stated? | Stated? |
| Number of fixtures reconnected | Counted? | Counted? |
| Wall patching and paint | Included? | Included? |
| Permit and inspection | Included? | Included? |
| Warranty on labor and pipe | In writing? | In writing? |
| Schedule and water-off hours | Specified? | Specified? |
Repair, partial repipe or full repipe
A repipe is not all or nothing. If one branch has failed and the rest is sound, a partial repipe can address that branch. If the pipe is failing everywhere, a full repipe avoids paying for repeated repairs and wall openings.
The honest comparison is the cost of the next few years of repairs against the cost of replacement. If you have had several leaks, the repipe often wins. If you have had one, repair is usually enough. See repiping for how the decision works and burst pipe repair if a line has already failed.
Questions that protect you
- Is the quote written, itemized and signed?
- Does it say who patches and paints the walls?
- Is the plumber licensed? Ask for the number and look it up with the Contractors State License Board.
- Does the quote name the permit and the inspection?
- How will you have water at night while the work is under way?
Be wary of a quote that is dramatically lower than the others. It often leaves out wall repair, permits or part of the house.
What the schedule looks like
Once the quote is signed and the permit is pulled, a repipe is usually scheduled across several days. The first day often covers the survey of access points and the rough-in of main lines. Later days cover branch lines and fixture connections. The last day covers testing, patching and cleanup.
Ask how many hours the water will be off on each day and where you can wash and cook in the meantime. A good plumber stages the work so that the house has water at night. The schedule is part of the cost, because every extra day adds labor.
Warranty, payment and what to put in writing
A repipe should come with a written warranty that states what is covered, for how long and who to call. Keep the paperwork with the permit record. Ask about payment terms before you sign. A deposit is normal, but a request for most of the money up front is a reason to look for another bid.
Photograph the pipe as it goes in, especially in walls that will be closed. If you sell the house later, those photos help a buyer see what was done.
Partial repipe: when it makes sense
Sometimes only one branch of the system has failed, such as the lines feeding a bathroom added in a different decade from the rest of the house. A partial repipe replaces that branch and leaves sound pipe in place. It costs less now but leaves older sections that may fail later.
Ask the plumber to test pressure on each branch and to explain what they find. If the rest of the pipe passes and looks sound, a partial repipe is reasonable. If the old pipe shows widespread corrosion, spending twice on staged work can cost more than doing it once.
Questions about the water heater and fixtures
A repipe is a good moment to look at the water heater, shutoff valves and supply stops, since they are already exposed. Ask the plumber whether new shutoffs are in the quote. Old stops that no longer close are a common surprise, and they are cheap to replace while the walls are open.
Mountain View housing age and what to confirm
Monta Loma's Fairview Eichlers date to roughly 1954 to 1957 according to the City's historic context statement, and much of Blossom Valley to the 1950s and 1960s. Homes that age may have had a repipe already, and the buyer or owner should ask when. A slab foundation changes the approach, which the guide on slab leak repair covers.
The Building Division at 650-903-6313 can tell you whether your project needs a permit. The City pages we reviewed do not spell it out for repiping, so confirm for your address. Homes in Los Altos fall under the City of Los Altos instead.
The service area page lists the towns where we can send a plumber for a repipe survey.
A repipe is done to the California Plumbing Code, published by IAPMO, so a quote that skips the permit or inspection is a quote to question.
Questions about this topic
How much does it cost to repipe a house in Mountain View?
It depends on the house, so we do not quote a number here. The main drivers are pipe material, fixture count, access and wall repair. A written quote after a walk-through gives a real figure.
Is repiping covered by homeowner's insurance?
Usually not, though resulting water damage may be. Check your policy.
Does a repipe increase home value?
It removes a known risk, which buyers and inspectors notice. We do not promise a value increase.
How do I verify a plumber's license in California?
Use the Contractors State License Board website to look up the license number, classification and status.
Should I repipe before selling a house?
Only if the pipes are a known problem. Ask a plumber for an honest opinion of the condition.