Leak Detection in Seattle, WA

Hidden Leaks in Seattle Homes

Seattle’s older housing stock and frequent rain can mask small leaks for months. A slab leak under a finished floor, a supply line weeping behind plaster, or a side-sewer joint that seeps into the soil may only show up as a higher water bill, a soft spot in the floor, or a damp smell in a crawl space.

We use acoustic listening, pressure testing, and visual inspection to narrow the location before any destructive opening is done. Once the leak is found we discuss repair options — from a simple fitting replacement to a section of repiping or side sewer repair if the source is on the sewer side.

When to Call for Leak Detection

• Unexplained rise in the water bill.
• Sound of running water when all fixtures are off.
• Warm spots on the floor (hot-water slab leaks).
• Damp drywall, staining, or musty odors.
• Low pressure that develops gradually.

Related services include emergency plumbing for active flooding and general plumbing repair once the source is known.

Areas Served

We provide this service across Seattle — including Capitol Hill, Ballard, Queen Anne, Fremont, West Seattle, Beacon Hill, and the University District — and nearby Shoreline, Burien, Tukwila, Renton, Bellevue, and Edmonds. See service areas for details.