Houston’s older neighborhoods such as the Heights and Montrose contain many 1940s–1970s homes built on concrete slabs with original galvanized or polybutylene lines. These pipes corrode faster in the area’s humid subtropical climate where condensation and soil movement add stress. PEX repiping moves supply lines into attics or wall chases, avoiding slab demolition while giving homeowners a corrosion-free system rated for the city’s occasional hard freezes.
Suburban homes in Katy, Sugar Land and Pearland often have larger footprints and multiple stories, requiring careful manifold placement to maintain pressure across long runs. PEX’s flexibility reduces joints compared with copper, lowering leak points in areas where high summer humidity can accelerate corrosion on any remaining metal fittings. Proper strapping every 32 inches and expansion loops prevent noise and movement when temperatures swing between hot afternoons and cooler nights.
Access challenges appear most often in Midtown and Downtown condos or townhomes where shared walls and limited attic space force creative routing. Technicians must coordinate with HOA rules and locate existing shutoffs before opening walls. Once new PEX lines are installed, each fixture is isolated and pressure-tested to 100 psi for two hours to confirm no leaks before drywall repair begins.
Water quality in Harris County varies by source, and some older neighborhoods still see higher mineral content that can affect mixing valves. PEX handles this without the scaling common in copper, yet installers still recommend a whole-house sediment filter upstream of the new manifold to protect the system long-term.
Technician insight
In Houston the thing that catches most people out with PEX repipe is how many 1960s–1970s slab homes in the Heights still have galvanized lines running under the concrete with no easy shutoffs. Once you open the first wall you often find the main valve is corroded shut or the attic has only 18 inches of clearance, forcing longer exterior runs that add time and strapping work.
Heights Bungalow Repipe
Galvanized supply lines in a 1952 bungalow were leaking at multiple joints. We mapped the slab layout, ran new PEX through the attic to every fixture, installed a central manifold, and pressure-tested the system. The homeowner regained full pressure without any slab demolition.
PEX Repipe Services We Offer
✓Attic PEX Repiping
Reroutes supply lines through attics in slab homes common throughout the Heights and Montrose, eliminating slab cuts while preserving flow to every fixture.
✓Wall Chase Installation
Opens and repairs interior walls to run PEX vertically in two-story homes in River Oaks and Midtown where attic access is limited.
✓Manifold and Valve Upgrade
Replaces the main shutoff and installs a central PEX manifold with individual shutoffs for each room, useful in larger homes in Katy and Sugar Land.
✓Slab Leak Reroute
Bypasses failing underground lines by running new PEX through exterior walls or attics in Pearland and older Houston neighborhoods.
✓Fixture Connection Replacement
Updates all faucet, toilet and appliance connections to PEX with proper shutoff valves during the repipe to prevent future drips.
PEX Repipe Cost in Houston, TX
| Service | Typical Range | What Affects It |
|---|---|---|
| Whole-house PEX repipe (under 2,000 sq ft) | $4,800–$7,200 | Single-story slab homes in the Heights or Montrose with attic access |
| Whole-house PEX repipe (2,000–3,500 sq ft) | $7,500–$11,000 | Two-story homes in River Oaks or Sugar Land with multiple baths |
| Manifold and valve package | $650–$1,100 | Added when upgrading from single main valve |
| Slab reroute add-on | $1,200–$2,400 | Exterior wall or attic bypass for homes with active slab leaks |
Ranges are typical for Houston, TX and confirmed with an exact written quote before any work starts.
How it works
- 1
Site Assessment
Walk the home to map existing pipe routes, note slab construction details, and identify access points in attics or walls typical of Houston housing stock.
- 2
Material Planning
Select PEX tubing size and manifold layout based on fixture count and home square footage while accounting for Houston’s humidity and temperature swings.
- 3
Installation
Run new PEX lines through chosen routes, secure every 32 inches, and connect to existing fixtures without disturbing finished surfaces where possible.
- 4
Testing and Finish
Pressure test the system, flush lines, and coordinate drywall or insulation repairs before final walkthrough.
Pricing
Upfront quotes based on square footage, number of bathrooms, and access difficulty in older Houston neighborhoods.