Whole-House Repiping in Snohomish County: Is It Time? What It Costs

What Is Whole-House Repiping?

Whole-house repiping replaces all the supply lines in your home — the pipes that carry fresh water from the main shutoff to every faucet, toilet, shower, and appliance. It does not include drain lines (that's a separate project called drain line replacement).

Repiping is typically done when the existing pipes are galvanized steel (which corrodes from the inside out), polybutylene (a recalled pipe material from the 1970s–90s that fails without warning), or severely damaged copper.

5 Signs Your Snohomish County Home Needs Repiping

1. Rusty or brown water — especially when you first turn on a faucet in the morning. This is iron oxide from corroding galvanized pipes.

2. Low water pressure throughout the house — not just one fixture. Galvanized pipes corrode from the inside, narrowing the diameter over time.

3. Frequent leaks — if you've had two or more pipe leaks in the past few years, the rest of the pipe is likely in similar condition.

4. Visible corrosion on exposed pipes — check under sinks, in the crawl space, and in the utility room.

5. Your home was built before 1980 — galvanized steel was the standard supply pipe material until copper became dominant. If you haven't already replaced them, they're overdue.

PEX vs. Copper: Which Is Better for Western Washington Homes?

PEX (cross-linked polyethylene) is the modern standard for residential repiping. It's flexible, freeze-resistant (important for Monroe-area homes with cold crawl spaces), faster to install, and costs less than copper. PEX has a 25-year warranty and a proven track record in the Pacific Northwest.

Copper is the traditional choice. It's durable, has a 50+ year lifespan, and is preferred by some homeowners for its reliability. It costs more than PEX and requires more labor to install, but it adds value to the home and is accepted by all insurance companies without question.

For most Snohomish County homes, we recommend PEX for its combination of performance, freeze resistance, and value. For high-end homes or specific insurance requirements, copper may be the better choice.

Whole-House Repiping Cost in Snohomish County (2026)

Cost depends on home size, pipe material, and accessibility (crawl space vs. slab foundation):

| Home Size | PEX Repiping | Copper Repiping | |---|---|---| | 1,000–1,500 sq ft | $3,500–$5,500 | $6,000–$9,000 | | 1,500–2,500 sq ft | $5,000–$8,000 | $8,000–$13,000 | | 2,500–3,500 sq ft | $7,000–$11,000 | $11,000–$18,000 |

These estimates include labor, materials, permits, and drywall patching. Homes on a slab foundation cost more due to the need to route pipes through walls rather than the crawl space.

The Repiping Process: What to Expect

A typical whole-house repipe in a 1,500–2,000 sq ft Snohomish County home takes 2–3 days:

Day 1: Shut off water, remove old pipes, run new PEX or copper lines through walls and crawl space.

Day 2: Complete connections to all fixtures, install new shutoff valves, pressure test the system.

Day 3 (if needed): Patch drywall, restore water, final inspection.

You'll be without water for approximately 6–8 hours on Day 1. We coordinate timing to minimize inconvenience.