Whole-Home Repiping in West LA: What It Involves and When You Need It
For homes built before 1980 with original galvanized pipe, repiping isn't just a repair — it's the most important infrastructure investment you can make.
West LA was built in waves — the 1940s and 50s post-war boom, the 60s and 70s expansion. Homes from the first two of those waves have pipe that is now 50–80 years old. At some point, incremental repair stops being cost-effective and full repiping becomes the only rational answer.
Galvanized Steel: The Enemy Inside Your Walls
Galvanized steel pipe was the residential standard through the 1960s. It resists corrosion for decades — until the zinc coating fails, at which point the steel corrodes from the inside out rapidly. The interior diameter shrinks, pressure drops, water discolors, and the pipe eventually fails entirely. There is no partial fix for systemic galvanized deterioration. Once the corrosion is widespread, the only answer is full replacement.
Why PEX Has Replaced Copper as the Standard
Cross-linked polyethylene (PEX) tubing is the dominant material for residential repiping today. It's highly flexible — bending around corners without fittings, dramatically reducing potential leak points. It resists corrosion entirely. It handles thermal expansion better than rigid pipe. Installation is faster than copper, reducing labor costs. And it carries a 25-year manufacturer warranty. In West LA's coastal environment where salt air accelerates any metal corrosion, PEX in the walls and under the slab is the right long-term answer.
What the Project Actually Looks Like
Whole-home repiping typically takes 2–4 days for a 1,500–2,500 sq ft home. Walls are opened at strategic access points — rarely more than necessary — new PEX runs are installed, and drywall is patched. The home remains livable throughout in most cases, with water service restored each evening. On completion, a licensed plumber performs a full pressure test before signoff.
Recurring slab leaks. Chronic low pressure throughout the home. Discolored morning water. Multiple pinhole leaks in recent years. A first-time slab leak on a 40+ year home. Any one of these warrants a repiping consultation.
Repiping sounds like a major disruption. In practice, most homeowners are surprised by how manageable it is — and by how different their water pressure feels when it's done.
| Home Size | Estimated Cost (PEX) | Timeline |
|---|---|---|
| Under 1,200 sq ft | $4,000–8,000 | 1–2 days |
| 1,200–2,000 sq ft | $7,000–14,000 | 2–3 days |
| 2,000–3,500 sq ft | $12,000–22,000 | 3–5 days |
| 3,500+ sq ft | Custom quote | 5–7 days |
Is your home still on original pipe?
Free whole-home plumbing assessment across West LA. We'll tell you exactly what you have and what it means.