King County Building Permits & Project Research

6,907 indexed permits · 1,724 contractor names in the last 90 days · King County, Washington.

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King County building permits — key stats
Active contractors 1,724
Newest permit 2026-11-05

PermitGrab tracks 6,907 building permits in King County, WA as of 2026-11-05, including 1,724 active contractors identified from filings in the last 90 days.

✓ Recent record dates

Record recency is based on available filing or issue dates; it does not verify publication time or collection delay.

Newest permit date:

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Filter King County permits by trade: solar · roofing · HVAC · electrical · fire protection · new construction.

Free weekly permit summary for King County

One email a week with the newest King County building permits — contractors, addresses, and project values. Free summary only — no credit card. Pro research tools require a separate 14-day trial with a card. Available fields vary by source. Unsubscribe anytime.

6,907
Indexed Permits
1,724
Contractor names (90 days)
2026-11-05
Last Updated
Source date: 2026-11-05
📊 View King County source-dated permit records →

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New permits, and contractor activity sent when new public records are available.

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Published permit & code records

Permit data through 2026-11-05
🔎 See for yourself — free: click any Reveal button to unmask up to 10 real contractor phone numbers. No account needed.

6,907 permits sorted by date

Project value is blank on every record displayed here, so the Value column is omitted.

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Date Type Address Details Contractor / Status Save
2026-08-05 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 9625 37TH AVE SW Seattle WA 98126
Owner: Pam··· 🔒
Plumbing Residential Single Family FAST WATER HEATER COMPANY
2026-08-05 Plumbing
Source type: 03b. Plumbing (by Contractor) - Multi-Family - without Plan Review*
 619 Virginia Street Seattle WA
Owner: COL··· 🔒
Plumbing Residential Multi-Family UNIVERSITY MECH CONTR INC
2026-08-05 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 15802 SAYBROOK DR NE WA 98077
Owner: Mar··· 🔒
Natural Gas Residential residential KIMBALL MECHANICAL
2026-08-05 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 1533 NE 94TH ST SEATTLE WA 98115
Owner: Gre··· 🔒
Plumbing Residential Single Family JBAR Plumbing LLC
2026-08-05 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 1535 NE 94TH ST SEATTLE WA 98115
Owner: Gre··· 🔒
Plumbing Residential Single Family JBAR Plumbing LLC
2026-08-05 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 1015 NE 95TH ST Seattle WA 98115
Owner: J &··· 🔒
Natural Gas Residential residential J & S PLUMBING & MECHANICAL INC
2026-08-05 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 —
Owner: RIC··· 🔒
Plumbing Residential Single Family B & R PLUMBING INC
2026-08-05 Demolition
Source type: Demolition Inspection
 19362 BYERS RD SE, 98038 (ART) KC RFMS LARSON DEMOLITION —
2026-08-05 New Construction
Source type: Residential Building - ADU
 17004 TABOR AVE SW, VASHON WA 98070 Salkind Garage —
2026-08-05 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 26023 SE 400TH ST Enumclaw WA 98022
Owner: LA ··· 🔒
Natural Gas Residential residential CODE MECHANICAL INC
2026-08-05 General Construction
Source type: Complex - Event 16+
 — Complex - Event 16+ REBECCA WONG
2026-08-04 Fire Protection
Source type: Fire/Fire Permit Systems/Sprinkler/Residential
 16541 426TH WAY SE STAND ALONE SYSTEM: We are connecting to an existing 13-D fire sprinkler system … sprinkler Jake Holmes
📞 (•••) •••-••••
2026-08-04 Fire Protection
Source type: Fire/Fire Permit Systems/Sprinkler/Residential
 30782 SE 408TH ST To provide a residential fire sprinkler system designed to the requirements of N… sprinkler Erin Clayton
📞 (•••) •••-••••
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 2611 S Dearborn ST Seattle WA 98144
Owner: CG ··· 🔒
Plumbing Residential Single Family DESIGN WEST MECHANICAL
📞 (•••) •••-••••
2026-08-04 HVAC
Source type: Building Mechanical Residential
 14148 SE 154TH PL, RENTON WA 98058 14148 SE 154TH PL, RENTON, WA 98058 furnace South West Plumbing
📞 (•••) •••-••••
2026-08-04 General Construction
Source type: Minimal Food Handling - Unlimited Event Permit Package
 — Minimal - Unlimited TRES Sandwich
📞 (•••) •••-••••
2026-08-04 Fire Protection
Source type: Fire/Fire Permit Systems/Sprinkler/Residential
 20500 NE 172ND PL STAND ALONE SYSTEM: Install a new residential fire sprinkler system based on NFP… residential sprinkler New construction David Sherepitka
📞 (•••) •••-••••
2026-08-04 Addition
Source type: Building/Residential Building/Addition-Improvement
 17723 161ST AVE SE CONSTRUCTION OF NEW POLY DECK WITH AN OPEN DECK Kendra Alston
📞 (•••) •••-••••
2026-08-04 HVAC
Source type: Building Mechanical Residential
 18310 SE 327TH PL, AUBURN WA 98092 18310 SE 327TH PL, AUBURN, WA 98092 Nate Harger
📞 (•••) •••-••••
2026-08-04 Fire Protection
Source type: Fire/Fire Permit Systems/Alarm/NA
 11002 16TH AVE SW Building fire alarm system. Install new addressable fire alarm system. fire alarm Guardian Security
📞 (•••) •••-••••
2026-08-04 Plumbing
Source type: 04b. Plumbing (by Contractor) - Small Commercial - without Plan Review*
 5545 WOODLAWN AVE N Seattle WA 98103
Owner: SAN··· 🔒
Plumbing Small Commercial Lake City Plumbing
📞 (•••) •••-••••
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 6714 FREMONT AVE N Seattle WA 98103
Owner: Mak··· 🔒
Plumbing Residential Single Family INTERNATIONAL PLUMBING INC
2026-08-04 Addition
Source type: Building/Residential Building/Addition-Improvement
 10101 12TH AVE S Seismic retrofit of an existing single-family residence: foundation sill anchora… Ryan Vytlacil
📞 (•••) •••-••••
2026-08-04 HVAC
Source type: Building Mechanical Residential
 4230 328TH PL SE, FALL CITY WA 98024 4230 328TH PL SE, FALL CITY, WA 98024 heat pump Richie Grant
📞 (•••) •••-••••
2026-08-04 Electrical
Source type: Building/Electrical Comm Device/Antenna/NA
 18011 SE RENTON ISSAQUAH RD PROPOSAL TO MODIFY EXISTING TELECOMMUNICATION FACILITY Jacob Neuman
📞 (•••) •••-••••
2026-08-04 HVAC
Source type: Building Mechanical Residential
 13477 191ST AVE SE, RENTON WA 98059 13477 191ST AVE SE, RENTON, WA 98059 furnace, heat pump Chase Tasca
📞 (•••) •••-••••
2026-08-04 HVAC
Source type: Building Mechanical Residential
 26734 SE RAVENSDALE WAY, RAVENSDALE WA 98051 26734 SE RAVENSDALE WAY, RAVENSDALE, WA 98051 heat pump Kimiko Riley
📞 (•••) •••-••••
2026-08-04 Fire Protection
Source type: Fire/Remove Residential Tank/NA/NA
 10715 CORNELL AVE S Pump out triple rinse and fill with foam one 300 gallon underground heating oil … MELINDA HESS
📞 (•••) •••-••••
2026-08-04 HVAC
Source type: Building Mechanical Residential
 16110 SE 180TH PL, RENTON WA 98058 16110 SE 180TH PL, RENTON, WA 98058 furnace, heat pump Simply Efficient Heating and Air Condition
📞 (•••) •••-••••
2026-08-04 Fire Protection
Source type: Fire/Remove Residential Tank/NA/NA
 9854 OCCIDENTAL AVE S Pump out triple rinse and fill with foam one 300 gallon underground heating oil … MELINDA HESS
📞 (•••) •••-••••
2026-08-04 Addition
Source type: Building/Residential Building/Addition-Improvement
 15616 258TH PL SE EXISTING FOUNDATION IS SHOWING SIGNS OF SETTLEMENT, WE ARE GOING TO INSTALL (16)… Permit Manager
📞 (•••) •••-••••
2026-08-04 Interior Renovation
Source type: Building/Residential Building/Addition-Improvement
 17103 NE 130TH ST RECONFIGURING THE MAIN FLOOR LAYOUT, INCLUDING CHANGES TO THE LAUNDRY ROOM, BATH… Liron
2026-08-04 HVAC
Source type: Building Mechanical Residential
 25824 SE 310TH ST, BLACK DIAMOND WA 98010 25824 SE 310TH ST, BLACK DIAMOND, WA 98010 heat pump Jake Garner
📞 (•••) •••-••••
2026-08-04 General Construction
Source type: OSS Repair or Modification Permit
 19438 SE 286TH ST WA 98042
Owner: Tim··· 🔒
OSS Repair or Modification Puget Sound Septic
📞 (•••) •••-••••
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 15313 168TH AVE NE WA 98072
Owner: Ram··· 🔒
Plumbing Residential Single Family FM PLUMBING LLC
2026-08-04 Plumbing
Source type: 08. Plumbing - Demolition or Removal
 400 FAIRVIEW AVE N Seattle WA 98109
Owner: 400··· 🔒
Plumbing Demolition AMERICAN MECHANICAL CORP
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 12906 182ND AVE NE WA 98052
Owner: And··· 🔒
Plumbing Residential Single Family BEE'S PLBG, HTG & SWR CO LLC
2026-08-04 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 8702 1ST AVE NW Seattle WA 98117
Owner: RIS··· 🔒
Natural Gas Residential residential INFRASOURCE SERVICES LLC
2026-08-04 General Construction
Source type: 51a. Medical or Dental Gas - With Plan Review*
 747 BROADWAY Seattle WA 98122
Owner: PRO··· 🔒
Medical/Dental Gas 51A MACDONALD/MILLER FAC SOL INC
2026-08-04 General Construction
Source type: Moderate - Event 16+
 — Moderate - Event 16+ Aaron Parr
2026-08-04 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 11861 31ST PL NE Seattle WA 98125
Owner: CHE··· 🔒
Natural Gas Residential residential INFRASOURCE SERVICES LLC
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 7126 55TH AVE S Seattle WA 98118
Owner: Mal··· 🔒
Plumbing Residential Single Family PLUMBING WORKS INC
2026-08-04 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 2809 W GARFIELD ST Seattle WA 98199
Owner: Mar··· 🔒
Natural Gas Residential residential HD PARTNERS
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 2562 13TH AVE W SEATTLE WA 98119
Owner: mod··· 🔒
Plumbing Residential Single Family KED Development LLC
2026-08-04 Plumbing
Source type: 01. Plumbing - Installed by Homeowner
 10026 34TH AVE SW Unit: Garage SEATTLE WA 98146
Owner: Pet··· 🔒
Plumbing DIY Residential Peter Jones
2026-08-04 Addition
Source type: Residential Building - Addition-Improvement
 22108 NE 150TH ST, WOODINVILLE WA 98077 SWEENEY - RESIDENTIAL DECK REBUILD —
2026-08-04 General Construction
Source type: Moderate - Event 06
 — Moderate - Event 06 Tsukime Matcha LLC
2026-08-04 Plumbing
Source type: 04a. Plumbing (by Contractor) - Small Commercial with Plan Review*
 19115 215TH WAY NE WA 98077
Owner: No ··· 🔒
Plumbing Small Commercial 4A MacDonald-Miller Facility Solutions LLC
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 8718 LINDEN AVE N Seattle WA 98103
Owner: EPI··· 🔒
Plumbing Residential Single Family EPIC PLUMBING LLC
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 8728 LINDEN AVE N Seattle WA 98103
Owner: EPI··· 🔒
Plumbing Residential Single Family EPIC PLUMBING LLC
Page 119 of 139 ← Prev 1 2 … 118 119 120 138 139 Next →
Permit Types in King County
02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
1,480 34.7%
Building Mechanical Residential
723 17.0%
22b. Natural Gas (by Contractor) – Residential - without Plan Review*
465 10.9%
Building/Mechanical/Residential/NA
342 8.0%
41. Backflow Assembly Permit - By Contractor
313 7.3%
04b. Plumbing (by Contractor) - Small Commercial - without Plan Review*
226 5.3%
Complex - Event 16+
198 4.6%
OSS Installation Permit - New or Replacement Pressurized System for Single Family
185 4.3%
Residential Building - Addition-Improvement
172 4.0%
03b. Plumbing (by Contractor) - Multi-Family - without Plan Review*
156 3.7%
Construction Activity in King County

New building permits in King County, Washington show where construction activity is being recorded. Contractors can filter the available public records by trade, date, address, and project value to research projects and plan outreach using the fields the source publishes.

About King County Building Permits

King County, Washington processes building permits covering residential construction, commercial buildouts, renovations, and specialty trade work. PermitGrab tracks 6,907+ King County building permits — newest permit date: 2026-11-05 from this listing's source.

Building permits in King County can document new construction, renovations, and specialty work. The fields in a public record vary by filing, but may include a project address, scope, estimated cost, or contractor name. Use the displayed source information to evaluate whether a record is useful for your market research.

How Contractors Use King County Permit Data

HVAC contractors, electricians, plumbers, and roofers can use King County building-permit records to research visible construction activity. A permit may signal a project that is relevant to a particular trade, but the source record does not establish that its owner is seeking a bid.

Use the published date, project details, and any named business contact to research a project before outreach. Public records are not exclusive, and outreach results depend on the market, project, and your own process.

Eligible subscribers can receive trade-filtered alerts when new records are collected. Alert timing and field coverage follow the underlying source rather than a universal schedule.

PermitGrab methodology · Page data current as of · Source: 3 public source feeds.

Who appears in King County permit records?

PermitGrab indexes 6,907 building permits in King County. New records appear as they are available from the source.

How fresh is King County permit data?

The most recent permit indexed for King County is dated 2026-11-05. Newest permit date: 2026-11-05. Permit records carry filing date, address, project value, and permit type, plus contractor name where the source publishes it. Use a recent published record for project research; it does not show bid availability or a request for service.

What construction appears in King County permit records?

King County permit activity covers 6,907 indexed permits. The records can cover new construction, residential renovations, mechanical/electrical/plumbing upgrades, roof replacements, demolitions, or tenant improvements. Their usefulness for a contractor or supplier depends on the published project details, timing, and service area.

1 workflow for King County research

Start with the published project record.

🕵️

The project-team lookup

Search a business name to review its recorded permit activity in King County and the project details the public source publishes. Use the scope, timing, and address to research complementary work; a record is not a request for bids.

Research King County project activity — Pro $149/mo

How to look up King County building permits

Search recent King County, WA building permits by address, contractor, and permit type in the table above — pulled from the King County building department's public permit records. New filings appear here as they are published. Filter by trade or search an address to look up a specific permit. For this week's filing volume and the most active contractors, see the King County Permit Pulse.

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Research King County project activity

Email alerts when new public records are available for newly published permits and recorded project-team activity. Contact details are shown only where the public source publishes them. 14-day Pro trial for alerts — card required; Pro $149/mo unlocks full available records.

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Frequently Asked Questions about King County Building Permits

How many building permits does PermitGrab track in King County?

PermitGrab currently tracks 6,907 building permits in King County, Washington. Data is pulled directly from the official municipal source on every collection cycle and includes permit number, address, permit type, status, estimated value, and contractor information where the source publishes it.

How fresh is the King County permit data?

PermitGrab checks the official source on each collection cycle. The source date and its observed update cadence are shown above, so you can judge the data’s recency before acting on it.

How can contractors find construction leads in King County?

Contractors find leads in King County by filtering PermitGrab by trade and ZIP code, then researching the recorded contractor and project activity. Contact details appear only where a public record includes them; saved-search email alerts track new matching records as they are published.

What’s included in the 14-day trial?

The 14-day trial includes full Pro access to King County — CSV export, trade and value-tier filters, lead scoring, and violation cross-reference flags. Contractor phone and website reveals are included where source-published. Card required to start; cancel anytime before day 14.

Can I cancel anytime?

Yes. Cancel any time from your account page — no contracts, no cancellation fees. Your subscription stays active through the end of the current billing period.

Who buys this data?

King County permit data, by use case

Same data, different angle. Pick the playbook that matches what you sell.

Contractors & subs
Recent King County contractor activity is a signal for labor and material demand. Contact details appear only where the public source publishes them.
Home service companies
An addition or remodel can be useful project context for HVAC, plumbing, or warranty outreach. Review the project signal before outreach.
Solar installers
Roof permits and electrical upgrades in King County provide project context for solar-market research. Filter by the current project signal and verify ownership separately.
Insurance agents
King County renovations can identify properties for a policy-review workflow. Confirm coverage needs independently before contacting a property owner.
Material suppliers & manufacturer reps
Choose a product-line research workflow, then use published job type, description, and value fields where available for territory and demand research. A permit is not a materials order, purchase signal, or open bid.
Developers & new construction
Sort source-published new-construction records by project value and type to research active projects and property activity, with contractor details where the record publishes them.
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More Washington permit data

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