When Pipes Become a Problem You Can’t Ignore
If your Texas home was built before the mid-1990s, there’s a real chance the plumbing inside your walls is living on borrowed time. Galvanized steel, polybutylene, and even some early copper systems were standard for decades — and they’re now failing in homes across Houston, Dallas, Austin, San Antonio, and the Hill Country at a steady clip.
A whole-home repipe isn’t a small project, but it’s often dramatically cheaper than the water damage, mold remediation, and insurance headaches that come from waiting until a pipe bursts inside a wall. This guide walks through how to tell when a repipe is the right call, what to budget, and how to get fair bids from licensed Texas plumbers.
What Is a Whole-Home Repipe?
A whole-home repipe replaces all (or nearly all) of the water supply lines in your house — typically from the main shutoff valve out to every fixture. Most repipes don’t touch drain lines unless those are also failing.
Modern repipes in Texas almost always use one of two materials:
- PEX (cross-linked polyethylene) — flexible, faster to install, and resistant to the hard water common in Central and North Texas.
- Type L copper — more expensive and labor-intensive, but extremely long-lasting.
For most residential projects, PEX has become the default. It’s cheaper, faster, and performs well in our climate.
Signs You Need a Whole-Home Repipe
A single leak doesn’t necessarily mean it’s time to repipe. But when you see two or more of these signs, it’s time to take it seriously.
1. You Have Polybutylene Pipes
Poly was installed in millions of homes from roughly 1978 to 1995. It’s typically gray, blue, or black plastic with crimped metal fittings. The material reacts badly with chlorinated municipal water — which is essentially all city water in Texas — and the failures are usually sudden and catastrophic. If you have poly, it’s not a question of if but when.
2. Galvanized Steel That’s 50+ Years Old
Common in homes built before the 1960s, galvanized pipes corrode from the inside out. Telltale signs: low water pressure throughout the house, brown or yellow water (especially after vacations), and visible rust on exposed fittings.
3. Repeat Leaks
Two or three pinhole leaks in copper over 18 months usually means the rest of the system isn’t far behind. Pinholes in copper often signal aggressive water chemistry or improperly grounded pipes — and patching one spot just delays the next.
4. Discolored or Bad-Tasting Water
If your water runs rusty, has a metallic taste, or smells off, the inside of your pipes is breaking down. Filters can mask this; they can’t fix it.
5. Persistently Low Pressure
If you’ve ruled out the pressure regulator and the city’s supply, the issue is almost always interior pipe diameter shrinking from mineral buildup or corrosion.
6. Your Slab Has Had a Leak
In Texas, where most homes sit on slab foundations, a slab leak is a serious flag. Rerouting through the attic or repiping the entire home is often more cost-effective than tunneling under the slab repeatedly. (If you’re already dealing with shifting or cracks, our guide to foundation warning signs is worth a read.)
What a Whole-Home Repipe Costs in Texas
Pricing varies by home size, pipe material, number of bathrooms, and whether the plumber has to work in a slab home or one with a crawl space or basement.
Typical Ranges (2025)
- Small home (1,200–1,600 sq ft, 1–2 baths): $4,500 – $8,500
- Mid-size home (1,800–2,500 sq ft, 2–3 baths): $7,500 – $14,000
- Large home (2,800+ sq ft, 3+ baths): $13,000 – $25,000+
- Copper instead of PEX: add 40–80%
These numbers assume the plumber is running new lines through the attic and walls — the standard approach in Texas slab construction. If extensive drywall repair, tile work, or custom finishes need to be restored, factor in another $1,500 – $6,000.
What Drives Cost Up
- Two-story layouts
- Tile or stone walls in bathrooms
- Multiple water heaters or a tankless conversion
- Whole-house water softener or filtration tie-in
- Permits and inspections (required in most Texas municipalities)
- Asbestos in older drywall (rare, but it happens in pre-1980 homes)
What Drives Cost Down
- Accessible attic with adequate clearance
- Single-story floor plan
- Drywall in unfinished or already-damaged areas
- Bundling with other projects like a bathroom remodel or kitchen update
How Long Does It Take?
Most whole-home repipes in Texas are completed in 2 to 5 working days for the plumbing itself, plus another 2–4 days for drywall patching, texture, and paint. Your water will be off for portions of each day — most crews restore service by evening. Plan to be home for inspections if your city requires them (Austin, Dallas, Houston, and most suburbs do).
Getting Fair Bids
A whole-home repipe is one of the easier projects to compare apples-to-apples — as long as you ask for the right things.
What Each Bid Should Include
- Material and brand (e.g., Uponor PEX-A, Type L copper)
- Number of fixtures and lines being replaced
- Manifold vs. trunk-and-branch layout
- Drywall repair scope — patch only, or patch + texture + paint
- Permit and inspection fees
- Warranty — 10-year minimum on labor is standard; PEX itself usually carries a 25-year manufacturer warranty
Red Flags
- No Texas Master Plumber license on file (