Key Takeaways
- Top-ranked coverage: Roto-Rooter lands at number one with a 4.8-star rating and more than 3,800 reviews from its four-county coverage area. The company also boasts a 2025 Consumer Choice Award.
- Local independents fill out the rest of the list: Across specific Seattle neighborhoods and Eastside suburbs, nine smaller, established independents round out this list, though many do not cover the entire metro area.
- Ranking criteria: Fee transparency, licensing, service area reach, longer business hours, years in business, and high Google rating combined with review volume all factor into placement here.
This list ranks Seattle’s 10 best-reviewed plumbers, led by one multi-county service provider and nine independents serving specific Seattle neighborhoods and Eastside suburbs, ranging from single-technician operators in Ballard to established multi-decade businesses. Each of the 10 entries below notes each company’s current Google rating, service area, and what sets it apart.
How We Ranked Seattle’s Best Plumbers
Before any company made this list, rating, review volume, years in business, licensing, service area size, and fee transparency all factored in. Weigh review volume alongside the star rating itself, because a perfect score built on a handful of reviews carries less certainty than a slightly lower score built on hundreds.
State certification carries similar weight, since Washington requires plumbers to hold a journeyman-level or specialty credential and the state requires the business itself to carry a Plumbing Contractor License.
Be sure to confirm a technician’s certification and the company’s contractor license status before signing off on a major repair. Before hiring a Seattle plumbing company, work through the checklist in our guide to finding a good plumber in Seattle.
1. Roto-Rooter Plumbing & Water Cleanup
Roto-Rooter, serving Seattle since 1935, built a 4.8-star Google rating across 3,881-plus reviews, the largest review base on this list. Roto-Rooter’s Seattle coverage extends across King, Snohomish, Pierce, and Kitsap counties, giving it the widest reach of any company here. Combine that with 24/7/365 reliability and no extra charge for nights, weekends, and holidays, and you can see why they lead the pack. Roto-Rooter carries a BBB A+ rating, sits on Seattle’s Three Best Rated list for local plumbers, and won the Consumer Choice Award for Best Plumbing Contractor in Seattle in 2025.
2. Done Right Plumbing, Heating & Sewer
Done Right Plumbing, Heating & Sewer has served Shoreline and Lynnwood since 2011 and holds a 4.9-star Google rating across 300-plus reviews. That review count puts it among the more established independents on this list, backing its rating with a decade-plus of history rather than a handful of recent jobs.
3. Green House Plumbing & Heating
Green House Plumbing & Heating has served Bellevue for more than 25 years and holds a 4.8-star Google rating across 400-plus reviews. That combination puts its track record and review base ahead of most other independents on this list. Homeowners outside Bellevue, or those needing coverage across several counties at once, will find a multi-county provider better suited to that need.
4. Goldstar Plumbing
Goldstar Plumbing is a family and veteran-owned independent serving Ballard and Kirkland, holding a 5.0-star Google rating from roughly 67 reviews. Its small crew works that corridor directly rather than dispatching through a multi-county network, so the same few technicians tend to show up call to call. Its review count is modest next to Roto-Rooter, Done Right, or Green House above it, though its perfect rating holds up across all of them.
5. Knockout Plumbing & Mechanical LLC
Knockout Plumbing & Mechanical is a small, licensed independent serving South Seattle and Georgetown, holding a 4.9-star Google rating from 50 reviews. Its size keeps the crew close-knit, with the same few technicians handling repeat calls rather than a rotating dispatch pool. Its review count sits well below the independents ranked higher on this list, so this rating reflects a smaller, still-growing customer base. Confirm current scheduling availability directly, since a smaller crew means less flexibility during high-demand periods.
6. O’Neill Plumbing
O’Neill Plumbing has served West Seattle since 1917, giving it well over a century of operations, longer than any other company on this list. The current Google listing shows a 4.7-star rating based on 370 reviews, reflecting consistently strong customer feedback over the years. As always, check the live Google listing directly before booking to confirm the most up-to-date rating and review count.
7. JT Plumbing NW
JT Plumbing NW is an owner-operated business serving West Seattle, holding a 5.0-star Google rating based on roughly 18 reviews. Its owner-operator structure means the person who quotes the job typically does the work himself. Its review count is thin next to the entries above it, so this rating rests on a smaller sample. Confirm current availability directly before counting on same-day service.
8. Bob Oates Sewer & Rooter
Bob Oates Sewer & Rooter is a mid-size independent serving Queen Anne, holding a 4.6-star Google rating from roughly 100 reviews, though other review platforms show meaningfully higher totals for the company. Its mid-size crew gives it more scheduling flexibility than a single-operator business, without matching a national company’s multi-county scale. Confirm the current Google rating directly before booking, and weigh a lower star rating against the added scheduling flexibility a bigger crew provides.
9. Best Plumbing
Best Plumbing is a mid-size independent serving North Seattle, holding a 4.6-star Google rating across an impressive 800 reviews. Its review base is larger than most others on this list, though its rating sits a notch below the top tier. Confirm current availability and get an itemized estimate before booking, since a few customer reports point to slower turnaround on parts sourcing for less common fixtures.
10. Ally Plumbing & Restoration
Ally Plumbing & Restoration is an independent company serving Shoreline and Tukwila, holding a 4.5-star Google rating across 500-plus reviews, the third-largest review base on this list after Roto-Rooter and Best. Despite that volume, its rating is the lowest of the ten, which is why it closes out the list. Confirm current standing directly before booking.
Frequently Asked Questions
Is it worth getting multiple quotes before hiring a plumber?
Yes, especially for anything beyond a basic repair. Pricing for the same job can vary between companies based on overhead, crew size, and how busy they are. Two or three quotes for a bigger job, like a sewer line repair or water heater replacement, help confirm a fair price before committing.
What’s a red flag that a plumber might be overcharging you?
A quote with no itemized breakdown, an hourly rate instead of flat-rate pricing, or a price that jumps significantly once the technician is already on-site. Short warranties or no guarantee at all are another consideration. These are all signs worth questioning. A written estimate before work begins protects against surprise charges, and a company willing to explain its pricing clearly is generally a safer bet.
Should I hire a plumber the same day I call, or wait for a scheduled appointment?
For an active leak, backed-up sewer line, burst pipe, or other emergency, same-day service matters more than finding the lowest price. For non-urgent work like a fixture replacement or routine drain cleaning, scheduling ahead often means more availability and sometimes better pricing than an emergency call-out.
Do I need a plumber who’s licensed specifically in my state, or is any license fine?
State licensing requirements differ, so a plumber needs to hold the specific credential required where the work is happening, in this case, Washington, not just any plumbing license. Confirming the technician or company’s license number and checking it against the state’s licensing board takes a few minutes and avoids hiring someone who isn’t actually authorized to do the work.
What should I ask a plumber before agreeing to a big repair, like a sewer line replacement?
Ask whether the price is a flat rate or hourly, whether a warranty covers the work afterward, and how long the job is expected to take. Also ask if financing is available for larger repairs, since a full sewer line or water heater replacement can run into the thousands.
Choosing the Right Plumber for Your Seattle Home
In the Seattle area, every company here has a documented Google presence and a real service history, though documentation quality varies by entry. Roto-Rooter backs its spot with a 4.8-star rating across more than 3,800 reviews, four-county coverage, and one flat rate for nights, weekends, and holidays.
Homeowners who need coverage across multiple counties will find that need better served by a multi-county provider than a single-neighborhood independent. Whatever provider a homeowner ultimately picks, our guide on choosing the best plumber in Seattle covers the fuller picture.