About Cornerstone Plumbing
Founded in 2014 in Bellingham, WA, Cornerstone Plumbing has grown into one of the most trusted independent well-respected plumber shops in the area. The crew specializes in residential service work — leaks, clogs, water heater service and replacement, gas lines, fixture upgrades, repipes, and sewer line repair — and is well known for the lengthy "we will not start work without explaining the price first" written estimate it provides on every visit. Backed by a 100% satisfaction guarantee and an active state license, Cornerstone Plumbing is a popular pick for both single-job homeowners and rental property managers across Bellingham.
Cornerstone Plumbing serves homeowners across Bellingham, WA and surrounding ZIP codes including 98225, 98226, 98229. Pricing is up-front and quoted in writing before any work begins, with no obligation if the estimate isn't right for your project.
Services offered
- Drain & sewer cleaning
- Garbage disposal service
- 24/7 emergency response
- Gas line install & repair
- Water heater install & repair
Service area
Cornerstone Plumbing covers Bellingham and the surrounding metro, typically responding to addresses within 25–35 miles of 98229. Same-day appointments are commonly available for non-emergency requests booked before noon, and 24/7 emergency dispatch is offered for active leaks, electrical hazards, no-heat/no-cool calls, and lockouts when applicable.
Licensing & insurance
FixNearMe verifies that Cornerstone Plumbing holds an active WA contractor license (#WA-900818) and carries general liability insurance covering work at residential properties. We re-verify licensing annually and remove any pro whose status lapses or whose review pattern deteriorates.
How to request a quote
Use the free quote form on this page to send your job details directly to Cornerstone Plumbing and up to two other nearby plumbers in Bellingham. You'll receive up-front written quotes — usually within an hour during business hours — so you can compare apples to apples before booking.