New Plumbing contractors in King County, WA
9
New, 30 days
- Last 7 days
- 3
- 90 days
- 24
- On record
- 807
- With phone
- 89%
9 new licenses for Plumbing contractors in King County, WA in the last 30 days, the latest on October 31, 2026. Read from the licensing records every day; renewals never count.
- Oct 31
AURORA MECHANICAL LLC
Plumbing, Heating, and Air-Conditioning Contractors #••••59
Seattle, WA
(206) •••-••54King County
(206) •••-••54
- Oct 26
ALPHA PLUMBING
Plumbing, Heating, and Air-Conditioning Contractors #••••73
Bellevue, WA
(425) •••-••25King County
(425) •••-••25
- Oct 26
MOUNTAIN WEST HOME SERVICES LLC
Registered business #••••31
Seatac, WA
No phoneKing County
No phone on record
- Oct 23
HARRIS CONCRETE AND CONSTRUCTION
Plumbing, Heating, and Air-Conditioning Contractors #••••88
Maple Valley, WA
(206) •••-••13King County
(206) •••-••13
- Oct 15
GTI SOLUTIONS LLC
Plumbing, Heating, and Air-Conditioning Contractors #••••58
Auburn, WA
(206) •••-••59King County
(206) •••-••59
- Oct 13
CASCADE CRAFT PLUMBING LLC
Plumbing, Heating, and Air-Conditioning Contractors #••••74
Seattle, WA
(206) •••-••28King County
(206) •••-••28
- Oct 12
WILSON MILLER MECHANICAL LLC
Plumbing, Heating, and Air-Conditioning Contractors #••••30
Seattle, WA
(425) •••-••14King County
(425) •••-••14
- Oct 09
WAXMAN FAMILY PLUMBING LLC
CONSTRUCTION CONTRACTOR - GENERAL #••••PZ
Black Diamond, WA
(253) •••-••71King County
(253) •••-••71
- Oct 09
VALLEY AIR LLC
Plumbing, Heating, and Air-Conditioning Contractors #••••41
Maple Valley, WA
(206) •••-••17King County
(206) •••-••17
- Oct 01
KENNYDALE PLUMBING LLC
PLUMBING CONTRACTOR - RESIDENTIAL #••••OP
Renton, WA
(206) •••-••58King County
(206) •••-••58
- Sep 29
GOOD NEIGHBOR HEATING AND AIR CONDITIONING LLC
Plumbing, Heating, and Air-Conditioning Contractors #••••67
Lake Forest Park, WA
(206) •••-••98King County
(206) •••-••98
- Sep 18
NERO PLUMBING
PLUMBING CONTRACTOR - RESIDENTIAL #••••OQ
Seattle, WA
(501) •••-••37King County
(501) •••-••37
- Sep 17
SOREANO PLUMBING SERVICE
Plumbing, Heating, and Air-Conditioning Contractors #••••55
Seattle, WA
(253) •••-••46King County
(253) •••-••46
- Sep 10
AZTEC PLUMBING LLC
Registered business #••••63
Bothell, WA
No phoneKing County
No phone on record
- Sep 09
JOSH PLUMBS LLC
PLUMBING CONTRACTOR - RESIDENTIAL #••••OZ
Renton, WA
(425) •••-••11King County
(425) •••-••11
9 more from the last 90 days in the full feed, with phone, email and street address.
Unlock the full feed15 recent licenses are shown; the rest of the list is not on this page.
Other trades in King County
New in 30 daysPlumbing by state
New in 30 daysWhat's in each King County, WA record
- Business name
- Owner or qualifier, where published
- License number, type and trade
- Street address, city, county, ZIP
- Phone, where published
- Email, where published
- Issue and expiration dates
- License status
Access opens as soon as you pay. We never add what a record didn't publish. See a sample record.
Who calls a new license in King County, WA
A new license is the moment a contractor needs everything at once: general liability and workers' comp, a surety bond, a supplier account, job-management software, a bookkeeper, a line of credit. Agents, bonding companies, suppliers, software tools, accountants and lenders use this feed to reach Plumbing contractors in King County, WA before anyone else has. Who it's for.
Questions
Where can I find a list of licensed contractors in King County, WA?
This page shows the latest Plumbing contractors licensed in King County, WA, with contact details partly hidden, free. The full list comes with the feed or a one-time CSV pack, with phone, email and address where the licensing records publish them.
How many new Plumbing contractors are there in King County, WA?
9 licenses in the last 30 days and 24 in the last 90, with the most recent on October 31, 2026. We hold 807 licenses here in all.
Do these records include phone numbers and email addresses?
Where the licensing records publish them: 89% of the licenses new here in the last 30 days carry a phone number and 0 carry an email address. Some states publish neither, and a record never shows a value the source did not print.
How often is this list updated?
Every day. New licenses are read from the licensing records each morning, and a renewal never counts as new.
What does it cost to see the full list?
Washington's full feed is $29 a month, or $99 a month for every state. Every license on record here is also sold once as a CSV for $19.
What does Washington's coverage include?
It covers registered contractors that are business entities, plus Seattle and Everett; sole proprietors are left out, as state law on lists of individuals requires.
Compiled from public licensing records. Before calling or emailing anyone on this list you are responsible for complying with the TCPA, Do Not Call rules, CAN-SPAM and any state limit on using licensee lists. Terms.