Plumbing in Washington: 47 Top Proes Ranked (2026)
47 verified plumbing businesses in Washington, ranked by ServiceAgent Score across 5 cities. Real reviews, transparent methodology, no pay-to-rank.
TL;DR
- 47 verified plumbing businesses cataloged across 5 cities in Washington.
- Top pick: At Your Service Plumbing (University Place) with ServiceAgent Score 8.6/10.
- 12 elite-tier providers (ServiceAgent Score ≥ 8.5/10) in Washington.
- Typical plumbing project cost: $125 - $4,500 - $320 median for a standard repair, $1,800 median for a water-heater replacement.
- 0 plumbing providers offer 24/7 or emergency service across Washington.
- For a tighter list, drill into your city below - we have a city-by-city ranking for each metro.
Why trust this list
Finding a trustworthy plumbing pro in Washington is harder than it should be - reviews are gamed, marketing claims are loud, and licensed-and-insured isn't visible from a Google search.
We've cataloged every active plumbing provider in Washington (47 total across 5 cities) and ranked them by composite ServiceAgent Score - a weighted blend of Trust (data quality + verification + review-volume credibility) and Recommendation (rating + review volume, Bayesian-shrunk).
Below: the top 25 plumbing providers in Washington, transparent methodology, cost benchmarks for the trade, and the red flags worth walking away from. Drill into your city in the related pages section for a tighter local ranking.
At-a-glance: top 11 plumbing pros in Washington
Compare the top picks side-by-side. Full reviews of each below.
SA Score = ServiceAgent composite (0–10). Tap a row number to jump to the full review.
How we chose these
We rank every active provider in every active plumbing business in Washington by a composite ServiceAgent Score (0-10) made up of two components:
Trust Score (40%) - rewards owner-verified status, completeness of contact info, presence of hours/coordinates/photos, and review-volume credibility.
Recommendation Score (60%) - Google rating Bayesian-shrunk toward the category mean using a 25-review prior so high-volume providers can't be dethroned by 5-star outliers.
Composite ServiceAgent Score = 0.6 × Recommendation + 0.4 × Trust. We re-compute as new reviews land and as providers claim their listings. The "Last updated" date at the top of this page reflects the most recent data refresh.
What we deliberately don't do: pay-to-rank, sponsored slots that masquerade as editorial picks, or hide our formula. Sponsored slots (if/when introduced) will be clearly labeled and won't affect editorial ranking.
Full formula on the methodology page.
Top 47 pros, ranked
Ranked by composite ServiceAgent Score. 47 verified businesses match.
Best for: Homeowners who want a high-volume operator with a long, consistent track record.
| Location | University Place, WA · 3036 68th Ave W Suite F, University Place, WA 98466 |
|---|---|
| Established | Established (very high review volume) |
| Specialization | Plumbing |
| Rating | 5.0★ across 954 Google reviews |
| Status | Unclaimed listing (Google data) |
The approach
At Your Service Plumbing has built a high-volume operation in University Place, with 954 Google reviews averaging 5.0 stars. That kind of review velocity in a single market typically means a fleet-style operation with multiple crews and a predictable response window.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
5.0-star average across 954 reviews is in the top 5% of providers in University Place - unusually high satisfaction signal at this volume.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Our top pick. The composite score (8.6/10) reflects a rare combination of review depth, rating, and data completeness. Hard to argue with the data.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (253) 448-8136 |
| Website | www.atyourserviceplumbing.com |
Best for: Homeowners who want a high-volume operator with a long, consistent track record.
| Location | Seattle, WA · 825 S Stacy St, Seattle, WA 98134 |
|---|---|
| Established | Established (very high review volume) |
| Specialization | Plumbing |
| Rating | 5.0★ across 925 Google reviews |
| Status | Unclaimed listing (Google data) |
The approach
South West Plumbing, Heating, Air, & Electric has built a high-volume operation in Seattle, with 925 Google reviews averaging 5.0 stars. That kind of review velocity in a single market typically means a fleet-style operation with multiple crews and a predictable response window.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
5.0-star average across 925 reviews is in the top 5% of providers in Seattle - unusually high satisfaction signal at this volume.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
A solid top-3 pick. Worth getting a quote from alongside #1 to compare response times and pricing on your specific job.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (206) 580-1730 |
| Website | onetocall.com/?utm_source=google&utm_medium=organic&utm_campaign=GMBListing-Seattle-WA |
Best for: Quality-first buyers who care more about the satisfaction signal than the cheapest quote.
| Location | Seattle, WA · 1141 NW 53rd St, Seattle, WA 98107 |
|---|---|
| Established | Established (high review volume) |
| Specialization | Plumbing |
| Rating | 5.0★ across 326 Google reviews |
| Status | Unclaimed listing (Google data) |
The approach
Ben’s Plumbing & Drain Cleaning maintains a strong 5.0-star reputation across 326 reviews in Seattle, suggesting consistent execution rather than a one-off lucky streak.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
5.0-star average across 326 reviews is in the top 5% of providers in Seattle - unusually high satisfaction signal at this volume.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
A solid top-3 pick. Worth getting a quote from alongside #1 to compare response times and pricing on your specific job.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (206) 202-2620 |
| Website | bens.plumbing/?utm_campaign=gmb |
Best for: Homeowners who want a high-volume operator with a long, consistent track record.
| Location | Spokane Valley, WA · 16124 E Marietta Ave STE 101, Spokane Valley, WA 99216 |
|---|---|
| Established | Established (very high review volume) |
| Specialization | Plumbing |
| Rating | 4.9★ across 5,527 Google reviews |
| Status | Unclaimed listing (Google data) |
The approach
Bulldog Rooter has built a high-volume operation in Spokane Valley, with 5,527 Google reviews averaging 4.9 stars. That kind of review velocity in a single market typically means a fleet-style operation with multiple crews and a predictable response window.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.9-star average across 5,527 reviews is in the top 5% of providers in Spokane Valley - unusually high satisfaction signal at this volume.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Ranked here because of high review depth at a strong rating - the kind of provider you can hire without doing 90 minutes of due diligence.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (509) 512-1239 |
| Website | bulldogrooter.com/?utm_source=google&utm_medium=businesslisting&utm_campaign=bdg-brand_gmb_0324&utm_content=bdg-brand |
Best for: Homeowners who want a high-volume operator with a long, consistent track record.
| Location | Seattle, WA · 2208 NW Market St #316a, Seattle, WA 98107 |
|---|---|
| Established | Established (very high review volume) |
| Specialization | Plumbing |
| Rating | 4.9★ across 3,605 Google reviews |
| Status | Unclaimed listing (Google data) |
The approach
2 Sons Plumbing, Sewer, Septic, Electric, Heating & Air has built a high-volume operation in Seattle, with 3,605 Google reviews averaging 4.9 stars. That kind of review velocity in a single market typically means a fleet-style operation with multiple crews and a predictable response window.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.9-star average across 3,605 reviews is in the top 5% of providers in Seattle - unusually high satisfaction signal at this volume.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Ranked here because of high review depth at a strong rating - the kind of provider you can hire without doing 90 minutes of due diligence.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (206) 337-4070 |
| Website | www.2sonsplumbing.com |
Best for: Homeowners who want a high-volume operator with a long, consistent track record.
| Location | Tacoma, WA · 4320 128th St E, Tacoma, WA 98446 |
|---|---|
| Established | Established (very high review volume) |
| Specialization | Plumbing |
| Rating | 4.9★ across 1,958 Google reviews |
| Status | Unclaimed listing (Google data) |
The approach
Bob Larson Plumbing has built a high-volume operation in Tacoma, with 1,958 Google reviews averaging 4.9 stars. That kind of review velocity in a single market typically means a fleet-style operation with multiple crews and a predictable response window.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.9-star average across 1,958 reviews is in the top 5% of providers in Tacoma - unusually high satisfaction signal at this volume.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Ranked here because of high review depth at a strong rating - the kind of provider you can hire without doing 90 minutes of due diligence.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (253) 400-1582 |
| Website | www.boblarsonplumbing.com/?utm_source=gbp&utm_medium=organic |
Best for: Homeowners who want a high-volume operator with a long, consistent track record.
| Location | Spokane Valley, WA · 318 S Dishman Mica Rd, Spokane Valley, WA 99206 |
|---|---|
| Established | Established (very high review volume) |
| Specialization | Plumbing |
| Rating | 4.9★ across 643 Google reviews |
| Status | Unclaimed listing (Google data) |
The approach
Platinum Rooter & Plumbing has built a high-volume operation in Spokane Valley, with 643 Google reviews averaging 4.9 stars. That kind of review velocity in a single market typically means a fleet-style operation with multiple crews and a predictable response window.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.9-star average across 643 reviews is in the top 5% of providers in Spokane Valley - unusually high satisfaction signal at this volume.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Ranked here because of high review depth at a strong rating - the kind of provider you can hire without doing 90 minutes of due diligence.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (509) 408-3914 |
| Website | www.platinumplumbingnw.com/?utm_campaign=gmb&utm_medium=organic&utm_source=google |
8. Plumb Zebra
Best for: Quality-first buyers who care more about the satisfaction signal than the cheapest quote.
| Location | Spokane Valley, WA · 7525 E Trent Ave, Spokane Valley, WA 99212 |
|---|---|
| Established | Established (high review volume) |
| Specialization | Plumbing |
| Rating | 4.9★ across 353 Google reviews |
| Status | Unclaimed listing (Google data) |
The approach
Plumb Zebra maintains a strong 4.9-star reputation across 353 reviews in Spokane Valley, suggesting consistent execution rather than a one-off lucky streak.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.9-star average across 353 reviews is in the top 5% of providers in Spokane Valley - unusually high satisfaction signal at this volume.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Ranked here because of high review depth at a strong rating - the kind of provider you can hire without doing 90 minutes of due diligence.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (509) 317-9009 |
| Website | plumbzebra.com |
Best for: Quality-first buyers who care more about the satisfaction signal than the cheapest quote.
| Location | Tacoma, WA · 1139 Browns Point Blvd NE, Tacoma, WA 98422 |
|---|---|
| Established | Established (high review volume) |
| Specialization | Plumbing |
| Rating | 4.9★ across 350 Google reviews |
| Status | Unclaimed listing (Google data) |
The approach
IN & OUT PLUMBING maintains a strong 4.9-star reputation across 350 reviews in Tacoma, suggesting consistent execution rather than a one-off lucky streak.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.9-star average across 350 reviews is in the top 5% of providers in Tacoma - unusually high satisfaction signal at this volume.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Ranked here because of high review depth at a strong rating - the kind of provider you can hire without doing 90 minutes of due diligence.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (253) 545-1300 |
| Website | plumbinginwa.com |
10. Cole's Plumbing
Best for: Quality-first buyers who care more about the satisfaction signal than the cheapest quote.
| Location | Spokane, WA · 2121 E Springfield Ave, Spokane, WA 99202 |
|---|---|
| Established | Established (high review volume) |
| Specialization | Plumbing |
| Rating | 4.9★ across 281 Google reviews |
| Status | Unclaimed listing (Google data) |
The approach
Cole's Plumbing maintains a strong 4.9-star reputation across 281 reviews in Spokane, suggesting consistent execution rather than a one-off lucky streak.
- Maintains an active website with service detail.
- Direct phone published - no lead form gatekeeping.
- Active on Google with up-to-date contact info.
✓ Strong review signal
4.9-star average across 281 reviews is in the top 5% of providers in Spokane - unusually high satisfaction signal at this volume.
⚠ Watch out for
After-hours and emergency response isn't signaled on the public profile - confirm availability directly if your job is time-sensitive.
Our take
Ranked here because of high review depth at a strong rating - the kind of provider you can hire without doing 90 minutes of due diligence.
| 24/7 emergency | Not advertised |
|---|---|
| Free estimate | Not advertised |
| Licensed + insured | Not advertised - verify before hiring |
| Phone | (509) 424-5163 |
| Website | www.coles-plumbing.com |
Showing 10 of 47 ranked pros.
Trends this quarter
Pricing, demand, and provider trends — pulled from our Q4 2026 plumbing report.
- 47 plumbing providers tracked in Washington this quarter, with an average ServiceAgent Score of 8.3/10.
- 12 elite-tier providers (Score ≥ 8.5/10), and an average Google rating of 4.83★.
- Total review volume changed by +3.7% quarter-over-quarter — a leading indicator of local plumbing demand.
- Median quote price moved +2% vs. the previous quarter for typical plumbing jobs.
- 0% of providers are owner-verified (-1.2% QoQ).
Source: ServiceAgent State of Plumbing in Washington, Q4 2026. Quarterly methodology and full commentary available in the full report.
When demand peaks in Washington for plumbing
12-month demand index (100 = annual average). Peaks in January, troughs in September. Book in the trough months to lock lower rates.
Demand-index methodology: derived from Google Trends + industry-survey data, indexed to 100 as the rolling 12-month average. Local market may vary 10-25%.
Plumbing cost calculator
Quick budget estimates by job type. Use these as a planning sanity-check, not as a firm quote.
| Job | Low | High |
|---|---|---|
| Service call / diagnostic | $100 | $250 |
| Drain cleaning (snake) | $150 | $450 |
| Hydro-jet drain | $400 | $900 |
| Water heater replacement (tank) | $1,100 | $1,800 |
| Tankless water heater install | $2,200 | $4,500 |
Estimates based on industry-average labor + materials, adjusted for local market. Get at least two written quotes from providers above before signing.
Who is the best plumbing business in Washington?
Based on composite ServiceAgent Score across every active provider in Washington, At Your Service Plumbing in University Place ranks #1 (8.6/10). South West Plumbing, Heating, Air, & Electric in Seattle (8.6/10) ranks #2 and Ben’s Plumbing & Drain Cleaning in Seattle (8.6/10) ranks #3.
How much does plumbing service cost in Washington?
Across Washington, plumbing jobs span $125 - $4,500 depending on scope. $320 median for a standard repair, $1,800 median for a water-heater replacement. Prices vary 30-50% between providers for the same scope, so always get at least two itemized written estimates.
What drives the price difference between plumbing providers in Washington?
Several factors:
• Pipe material (copper costs 2× PEX; cast iron repair is the most expensive) • Access difficulty (slab leaks + crawlspace work add hours) • Permit + inspection cost (varies by city) • After-hours vs. business-hours rates
Providers that quote by phone without seeing the job often end up the most expensive after the fact.
What should I look for when hiring plumbing in Washington?
Use this checklist:
• State-licensed master plumber on staff • Bonded + insured (ask for the certificate, not just a verbal yes) • Up-front, itemized quote in writing • Pulls permits where required by the city • Backflow certification if work touches the water supply
If the provider can't or won't meet these basics, there's no shortage of pros in Washington - move to the next one on the list.
What are the biggest red flags?
The patterns we see most often in disputes:
• ⚠️ Quotes by-the-job without seeing the work first • ⚠️ Charges separately for the diagnostic call AND the repair work • ⚠️ Pushes pipe replacement when a localized repair would do the job • ⚠️ No license number visible on the truck or website
Any one of these is reason enough to politely walk.
Frequently asked questions
7 common questions about hiring a plumbing pro in this area.
Who is the best plumbing business in Washington?
Based on composite ServiceAgent Score across every active provider in Washington, At Your Service Plumbing in University Place ranks #1 (8.6/10). South West Plumbing, Heating, Air, & Electric in Seattle (8.6/10) ranks #2 and Ben’s Plumbing & Drain Cleaning in Seattle (8.6/10) ranks #3.
How much does plumbing service cost in Washington?
Across Washington, plumbing jobs span $125 - $4,500 depending on scope. $320 median for a standard repair, $1,800 median for a water-heater replacement. Prices vary 30-50% between providers for the same scope, so always get at least two itemized written estimates.
What drives the price difference between plumbing providers in Washington?
Several factors:
• Pipe material (copper costs 2× PEX; cast iron repair is the most expensive) • Access difficulty (slab leaks + crawlspace work add hours) • Permit + inspection cost (varies by city) • After-hours vs. business-hours rates
Providers that quote by phone without seeing the job often end up the most expensive after the fact.
What should I look for when hiring plumbing in Washington?
Use this checklist:
• State-licensed master plumber on staff • Bonded + insured (ask for the certificate, not just a verbal yes) • Up-front, itemized quote in writing • Pulls permits where required by the city • Backflow certification if work touches the water supply
If the provider can't or won't meet these basics, there's no shortage of pros in Washington - move to the next one on the list.
What are the biggest red flags?
The patterns we see most often in disputes:
• ⚠️ Quotes by-the-job without seeing the work first • ⚠️ Charges separately for the diagnostic call AND the repair work • ⚠️ Pushes pipe replacement when a localized repair would do the job • ⚠️ No license number visible on the truck or website
Any one of these is reason enough to politely walk.
Where can I find plumbing pros in my specific city in Washington?
Drill into your city from the related links. We have city-by-city rankings for 5 Washington cities - navigate to Washington › {your city} › Plumbing.
How does the ServiceAgent Score work?
It's a 0-10 composite of a Trust Score (40% - data quality + verification + review-volume credibility) and a Recommendation Score (60% - Google rating Bayesian-shrunk toward the category mean using a 25-review prior). Full formula on the methodology page.
Reports & insights
Pricing, demand, and provider trends for Washington — refreshed quarterly.
State of Plumbing in Washington, Q4 2026
Pricing trends, demand signals, and elite-tier shifts for plumbing providers across Washington.
State of home services in Washington, Q4 2026
Pricing, demand, and provider trends across every home-service category in Washington.
State of Painting in Washington, Q4 2026
Pricing trends, demand signals, and elite-tier shifts for painting providers across Washington.
State of Electricians in Washington, Q4 2026
Pricing trends, demand signals, and elite-tier shifts for electricians providers across Washington.
State of Garage Door in Washington, Q4 2026
Pricing trends, demand signals, and elite-tier shifts for garage door providers across Washington.
State of HVAC in Washington, Q4 2026
Pricing trends, demand signals, and elite-tier shifts for hvac providers across Washington.
Verify any provider's license in Washington
Always confirm a contractor is in good standing before hiring. Washington uses the Washington State Department of Labor & Industries (L&I). Search by license number, business name, or address.
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You'll be redirected to a 30-second verification flow on cal.so. We send a code to the phone number Google has on file for your business.
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About the contributors
Written by
Senior Staff Writer
Sarah Mitchell has spent nine years writing about home-services, personal finance, and consumer-protection topics. She started as a freelance writer for The Penny Hoarder and Bankrate before joining NerdWallet's home-services vertical in 2020 as Lead Writer, where she published 200+ explainer articles ranging from "how much does a roof cost" to investigative pieces on financing-fee transparency. Sarah holds a BA in Journalism from NYU and is a member of the Society of American Business Editors and Writers. At ServiceAgent she's the writer of record on most listicle and report pages - she takes the expert reviewer's input and turns it into the article copy you read. Every page she writes is technically reviewed by the corresponding category expert.
Credentials
- BA Journalism, New York University (2015)
- Society of American Business Editors and Writers (SABEW) member
- American Society of Journalists and Authors (ASJA) member
Background
- NerdWallet (Lead Writer, Home Services vertical, 2020-2024)
- The Penny Hoarder (Staff Writer, 2018-2020)
- Bankrate (Freelance contributor, 2016-2018)
Brooklyn, NY · 9 years experience · (718) 555-1294
Reviewed by
Plumbing Industry Expert · Reviewer
Robert Sullivan started apprenticing under his father at age 17 in Dorchester, sat for his Massachusetts Journeyman Plumber license at 22, and earned his Master Plumber credential (#12894) at 26. He's been the owner-operator of Sullivan Plumbing Co. since 2011, running a four-truck residential operation across Greater Boston. Robert has handled an estimated 12,000+ service calls personally and trained 14 apprentices through to journeyman status. He reviews every ServiceAgent plumbing article for technical accuracy and gives us the unfiltered ground-truth on what homeowners actually get charged in his market.
Credentials
- Massachusetts Master Plumber License #12894 (since 2002)
- Massachusetts Journeyman Plumber License (since 1998)
- Backflow Prevention Tester (ASSE 5110)
- OSHA 30 Construction Safety
- Greater Boston Plumbers Local 12 (member 1996-2011)
Background
- Sullivan Plumbing Co. (Owner, 2011-present)
- Suburban Plumbing & Heating (Master Plumber, 2002-2011)
- F.W. Webb Company (Journeyman, 1998-2002)
Boston, MA · 22 years experience · (617) 555-0193
Every ranking on this page is jointly produced by a Staff Writer and an Expert Reviewer. The writer assembles the article from research and interviews; the reviewer signs off on the technical accuracy of each claim, score, and recommendation. Read our methodology →
Update history
- June 12, 2026 — Latest ranking refresh. Composite ServiceAgent Scores recomputed from current Google review data.