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
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6,907 permits sorted by date

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Date Type Value Address Details Contractor / Status Save
2026-08-06 Plumbing
Source type: 41. Backflow Assembly Permit - By Contractor
 — 9517 SW GORSUCH RD WA 98070
Owner: Wil··· 🔒
Backflow Assembly TRI STATE PLUMBING
📞 (•••) •••-••••
2026-08-06 Interior Renovation
Source type: Building/Residential Building/Addition-Improvement
 — 4008 S 302ND PL WORK INCLUDES EXPANDING THE FIRST-FLOOR FAMILY ROOM AND KITCHEN, AS WELL AS RELO… Wade Bowen
📞 (•••) •••-••••
2026-08-06 HVAC
Source type: Building Mechanical Residential
 — 29015 39TH AVE S, AUBURN WA 98001 29015 39TH AVE S, AUBURN, WA 98001 heat pump Katy Kehle
📞 (•••) •••-••••
2026-08-06 HVAC
Source type: Building Mechanical Residential
 — 43704 SE 149TH ST, NORTH BEND WA 98045 43704 SE 149TH ST, NORTH BEND, WA 98045 heat pump Miriam Chavez
📞 (•••) •••-••••
2026-08-06 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 — 6044 30TH AVE NE Seattle WA 98115
Owner: MAR··· 🔒
Natural Gas Residential residential GEORGE GAS PIPING LLC
2026-08-06 HVAC
Source type: Building Mechanical Residential
 — 23980 NE GREENS CROSSING RD, REDMOND WA 98053 23980 NE GREENS CROSSING RD, REDMOND, WA 98053 heat pump Matthew Allred
📞 (•••) •••-••••
2026-08-06 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 — 4132 48TH AVE SW Seattle WA 98116
Owner: OJE··· 🔒
Natural Gas Residential residential AIRPROS ENERGY LLC
2026-08-06 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 — 2809 S RAYMOND ST Seattle WA 98108
Owner: CAH··· 🔒
Natural Gas Residential residential CAHILL'S PLUMBING & HEATING
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 1526 36TH AVE Seattle WA 98122
Owner: SER··· 🔒
Plumbing Residential Single Family SERVICE PLUMBING & HEATING INC
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 2809 S RAYMOND ST Seattle WA 98108
Owner: CAH··· 🔒
Plumbing Residential Single Family CAHILL'S PLUMBING & HEATING
2026-08-06 Plumbing
Source type: 01. Plumbing - Installed by Homeowner
 — 8703 6TH AVE NW Seattle WA 98117
Owner: Mar··· 🔒
Plumbing DIY Residential Martynas Grazulis
2026-08-06 Plumbing
Source type: 03b. Plumbing (by Contractor) - Multi-Family - without Plan Review*
 — 1417 QUEEN ANNE AVE N Seattle WA 98109
Owner: KEI··· 🔒
Plumbing Residential Multi-Family FAST WATER HEATER COMPANY
2026-08-06 Plumbing
Source type: 04b. Plumbing (by Contractor) - Small Commercial - without Plan Review*
 — 2580 29TH AVE S Seattle WA 98144
Owner: MT ··· 🔒
Plumbing Small Commercial FAST WATER HEATER COMPANY
2026-08-06 New Construction
Source type: Residential Building - ADU
 $168,921 15205 CEDAR GROVE RD SE, ISSAQUAH WA 98027 COHEN ACCESSORY DWELLING UNIT residential —
2026-08-06 Addition
Source type: Residential Building - Addition-Improvement
 $57,105 24957 SE 155TH PL, ISSAQUAH WA 98027 MERRIFIELD DECK —
2026-08-06 Addition
Source type: Residential Building - Addition-Improvement
 $187,559 17004 TABOR AVE SW, VASHON WA 98070 SALKIND GARAGE AND STUDIO —
2026-08-06 Interior Renovation
Source type: Addition-Improvement - Tenant
 $50,000 17650 140TH AVE SE, RENTON WA 98058 THE SOCIAL SPOT TENANT IMPROVEMENT —
2026-08-06 Plumbing
Source type: 41. Backflow Assembly Permit - By Contractor
 — 3227 96TH AVE NE Clyde Hill WA 98004
Owner: PEL··· 🔒
Backflow Assembly PELTRAM PLUMBING
2026-08-06 Plumbing
Source type: 04b. Plumbing (by Contractor) - Small Commercial - without Plan Review*
 — 1710 E DENNY WAY Seattle WA 98122
Owner: DEP··· 🔒
Plumbing Small Commercial FAST WATER HEATER COMPANY
2026-08-06 Temporary
Source type: Temporary Event Coordinator
 — — Temporary Event Coordinator City of Auburn
2026-08-06 Plumbing
Source type: Septic System Time of Sale Inspection Waiver Request
 — 617 SW 299TH ST Federal Way WA 98023 OSS Time of Sale Waiver Request Glenda Benavides
2026-08-06 General Construction
Source type: Complex - Event 02
 — — Complex - Event 02 Super Donkey Tacos
2026-08-06 General Construction
Source type: Complex - Event 05
 — — Complex - Event 05 Aeggy's
2026-08-06 General Construction
Source type: Moderate - Event 12
 — — Moderate - Event 12 Cervera-Avila, Jessica
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 2512 28TH AVE W Seattle WA 98199
Owner: QUA··· 🔒
Plumbing Residential Single Family QUALITY PLUMBING
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 5430 45TH AVE W Seattle WA 98199
Owner: Mr.··· 🔒
Plumbing Residential Single Family QUALITY PLUMBING
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 16636 159TH PL SE WA 98058
Owner: Rom··· 🔒
Plumbing Residential Single Family FAST WATER HEATER COMPANY
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 10883 240TH AVE NE WA 98053
Owner: Ram··· 🔒
Plumbing Residential Single Family FAST WATER HEATER COMPANY
2026-08-06 Plumbing
Source type: 41. Backflow Assembly Permit - By Contractor
 — 10040 SW GOVERNORS LN WA 98070
Owner: VAS··· 🔒
Backflow Assembly VASHON PLUMBING SERVICES LLC
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 32621 SE 3RD ST CARNATION WA 98014
Owner: Lig··· 🔒
Plumbing Residential Single Family Lighthouse Plumbing LLC
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 33344 SE 52ND ST WA 98024
Owner: Kai··· 🔒
Plumbing Residential Single Family JQP JEFFS QUALITY PLUMBING LLC
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 7603 48TH AVE S Seattle WA 98118
Owner: Lau··· 🔒
Plumbing Residential Single Family FAST WATER HEATER COMPANY
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 10046 40TH AVE SW Seattle WA 98146
Owner: Tif··· 🔒
Plumbing Residential Single Family FAST WATER HEATER COMPANY
2026-08-06 Addition
Source type: Residential Building - Addition-Improvement
 $77,997 19113 NE 132ND ST, WOODINVILLE WA 98077 SCHULDT ACCESSRY BARN —
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 813 NE 92ND ST Seattle WA 98115
Owner: EPI··· 🔒
Plumbing Residential Single Family EPIC PLUMBING LLC
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 811 NE 92nd ST Seattle WA 98115
Owner: EPI··· 🔒
Plumbing Residential Single Family EPIC PLUMBING LLC
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 3654 47TH AVE SW Seattle WA 98116
Owner: Pau··· 🔒
Plumbing Residential Single Family PIPE PRO
2026-08-06 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 — 7740 18TH AVE NE Seattle WA 98115
Owner: Joe··· 🔒
Natural Gas Residential residential SJ TEDDY PLUMBING CNTRTRS LLC
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 4307 35TH AVE W Unit: D SEATTLE WA 98199
Owner: Kyl··· 🔒
Plumbing Residential Single Family PIPE PRO
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 4307 35TH AVE W Unit: B SEATTLE WA 98199
Owner: Kyl··· 🔒
Plumbing Residential Single Family PIPE PRO
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 4307 35TH AVE W Unit: E SEATTLE WA 98199
Owner: Kyl··· 🔒
Plumbing Residential Single Family PIPE PRO
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 4315 35TH AVE W Unit: A SEATTLE WA 98199
Owner: Kyl··· 🔒
Plumbing Residential Single Family PIPE PRO
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 4307 35TH AVE W Unit: A SEATTLE WA 98199
Owner: Kyl··· 🔒
Plumbing Residential Single Family PIPE PRO
2026-08-06 Plumbing
Source type: 01. Plumbing - Installed by Homeowner
 — 334 NE 57TH ST Seattle WA 98105
Owner: Add··· 🔒
Plumbing DIY Residential Addison Salzman
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 13741 37TH AVE NE Seattle WA 98125
Owner: Nu ··· 🔒
Plumbing Residential Single Family NORTHWEST PLUMBING LLC
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 4307 35TH AVE W Unit: C SEATTLE WA 98199
Owner: Kyl··· 🔒
Plumbing Residential Single Family PIPE PRO
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 4315 35TH AVE W Unit: B SEATTLE WA 98199
Owner: Kyl··· 🔒
Plumbing Residential Single Family PIPE PRO
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 4315 35TH AVE W Unit: C SEATTLE WA 98199
Owner: Kyl··· 🔒
Plumbing Residential Single Family PIPE PRO
2026-08-06 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 — 1716 N 50TH ST Seattle WA 98103
Owner: Him··· 🔒
Plumbing Residential Single Family Archies Plumbing
2026-08-06 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 — 4405 NE 75TH ST Seattle WA 98115
Owner: Mr.··· 🔒
Natural Gas Residential residential QUALITY PLUMBING
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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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Comparing permit-data tools? See BuildZoom vs Shovels vs PermitGrab (2026) — how to compare market coverage, source freshness, and available record fields.

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