Whole-House Repipe Cost in 2026: PEX, Copper, and What Goes Wrong
A whole-house repipe is the most expensive plumbing decision most homeowners ever make — and the prices you get can vary by a factor of three on the same house. The difference isn't usually one plumber being dishonest; it's that different plumbers include different scopes. This guide breaks down what should be in a repipe quote, what gets added later, and how to compare offers apples-to-apples.
Cost ranges by material and home size (2026)
A 2,000 sq ft single-family home: PEX repipe $4,000-$10,000, copper repipe $8,000-$18,000. A 1,200 sq ft house: PEX $3,000-$7,000, copper $5,500-$11,000. A 3,500 sq ft house: PEX $7,000-$15,000, copper $13,000-$25,000. Two-story homes cost 25-40% more than single-story of the same square footage because vertical runs add labor. Slab foundations cost more than crawl space — slab repipes often re-route pipes through attic and walls, adding drywall work.
What should be in the quote
A complete repipe quote covers: all hot and cold supply lines from the water meter to every fixture; replacement of every shutoff valve and supply stop; new pressure regulator if needed; new water meter connection if existing is undersized; new outdoor hose bibs (typically 2-4); manufacturer warranty registration on the pipe; manifold or homerun layout (if PEX); permit and inspection fee. Missing any of these in a written quote is a sign of an incomplete scope.
What's not usually included (and should be priced separately)
Drywall repair is separately quoted by most plumbers; budget $1,500-$5,000 depending on house size for patch, sand, prime, and paint. Tile demolition and repair in showers or kitchens is even more — $2,000-$8,000. Water heater replacement, if the existing unit is old, is a sensible add-on at $1,500-$5,500. Whole-home water softener install, if you have hard water and want to protect new pipes, runs $1,500-$3,500.
Why the same job varies by $8,000
Three reasons. First, scope: one quote includes the drywall and another doesn't — that gap alone is $3,000-$5,000. Second, brand: 'PEX repipe' might mean Uponor AquaPEX-A (premium, 25-year warranty) or import PEX-B (10-year). Third, finish work: one plumber leaves clean drywall holes for you to patch; another patches and paints. Always confirm in writing which finish level is included.
How long it actually takes
A 2,000 sq ft PEX repipe typically takes 2-3 working days for the pipe work, then 1-3 days for drywall patch, then 1-2 days for paint. Total from first hole cut to last touch-up: 5-8 working days. Copper takes 3-5 days for pipe work because of soldering. You'll need to plan for 1-3 days of no water during the active pipe work. Most plumbers can keep the kitchen and one bathroom on overnight.
When to repipe vs spot-repair
Repipe if: more than two pipe leaks in the last 18 months, polybutylene throughout the house (insurance issue), galvanized steel with rust restrictions reducing flow, or any sign of widespread pinhole leaks in copper (acidic water). Spot-repair if: one leak in an otherwise sound system, the pipe material is in good condition, or you plan to sell within 2 years (repipe is a tough resale return).
What an inspection should reveal
Before quoting, a competent plumber walks the entire system: inspect existing pipe material, count fixtures, check water pressure, examine accessibility (open joists vs finished ceilings), look at the existing valve and meter setup. A 5-minute over-the-phone quote is almost certainly missing scope. Insist on an in-person inspection before the quote becomes binding.
A whole-house repipe is a 10-15 day commitment that affects the next 40-50 years of your home's plumbing. Spending the extra week getting three detailed in-person quotes and reading every line item carefully is the single highest-leverage time you'll spend on the project. The cheapest quote is almost never the best deal — usually the scope is missing $3,000-$6,000 of work that will appear later as a change order.