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

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
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 8720 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*
 8722 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*
 8726 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*
 8724 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*
 23861 SE 162ND ST WA 98027
Owner: dav··· 🔒
Plumbing Residential Single Family K D P PLUMBING
2026-08-04 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 23861 SE 162ND ST WA 98027
Owner: Dav··· 🔒
Natural Gas Residential residential K D P PLUMBING
2026-08-04 Landscaping & Exterior
Source type: SiteDevCA/Cultural Resource/Determination/NA
 17004 TABOR AVE SW New 2 car garage with studio-guest unit above —
2026-08-04 Landscaping & Exterior
Source type: SiteDevCA/Cultural Resource/Determination/NA
 9727 SW WINDMILL ST Construction of a new, approx. 600sf detached garage structure to the west of th… —
2026-08-04 Fire Protection
Source type: Fire/Special Events/Specific/NA
 12424 76TH AVE S Free community outdoor movie event hosted in partnership with King County Fire D… —
2026-08-04 Addition
Source type: SiteDevCA/Cultural Resource/Determination/NA
 22550 101ST LN SW Expansion of existing dwelling —
2026-08-04 Fire Protection
Source type: Fire/Special Events/Specific/NA
 16300 NE MARYMOOR WAY We will have Portable stage, food demos, a petting zoo, food vendors, kids' acti… —
2026-08-04 General Construction
Source type: Residential Building - Basic
 — Reserve at Washington National|9 —
2026-08-04 Fire Protection
Source type: Fire/Special Events/Specific/NA
 7121 S 120TH PL Community event Event Set-up Set-up Date 8/8/2026 Set-up Time 10am Event Start S… —
2026-08-04 Signage
Source type: SiteDevCA/Critical Areas Designation/Formal Design
 — We would like to start the process of building a single family residence, and su… —
2026-08-04 New Construction
Source type: Building/Residential Building/Dwelling-Single/NA
 26302 SUMMIT LANDSBURG NEW 2-STORY, 5-BEDROOM SINGLE FAMILY RESIDENCE WITH ATTACHED GARAGE AND COVERED … 2-story 5 beds residential —
2026-08-04 New Construction
Source type: Building/Residential Building/Dwelling-Single/NA
 19029 168TH NEW 1-STORY, 3 BEDROOM SINGLE FAMILY RESIDENCE WITH ATTACHED GARAGE & COVERED PO… 1-story 3 beds residential —
2026-08-04 Interior Renovation
Source type: Building/Residential Building/Addition-Improvement
 10862 DIXON DR S Interior Renovation of existing bathroom and kitchen, limited to appliances, cab… —
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 16730 NE 139TH PL WA 98072
Owner: BOB··· 🔒
Plumbing Residential Single Family Washington Energy Services
2026-08-04 Interior Renovation
Source type: Water Recreation Facility Plan Review - Multiple Renovations
 402 21ST ST SE Auburn WA 98002 Multiple Renovations Jen Anderson
2026-08-04 Plumbing
Source type: 41. Backflow Assembly Permit - By Contractor
 121 VINE ST Seattle WA 98121
Owner: CWD··· 🔒
Backflow Assembly Holmberg Company
2026-08-04 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 32512 SE ISSAQUAH FALL CITY RD WA 98024
Owner: Lin··· 🔒
Natural Gas Residential residential Switch Electric
2026-08-04 General Construction
Source type: 23a. Natural Gas (by Contractor) - Commercial - with Plan Review*
 5840 AIRPORT WAY S Unit: SUITE 122 SEATTLE WA 98108
Owner: Sca··· 🔒
Natural Gas Commercial 23A AMERICAN MECHANICAL CORP
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 7311 57TH AVE NE Seattle WA 98115
Owner: JRJ··· 🔒
Plumbing Residential Single Family NORTHWEST PLUMBING CONTRS INC
2026-08-04 New Construction
Source type: OSS Installation Permit - New or Replacement Pressurized System for Single Family
 20XX SW 162ND CT Burien WA 98166
Owner: Ben··· 🔒
Pressurized System (New)-Single Family residential Earl Soushek
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 14106 EVANSTON AVE N Seattle WA 98133
Owner: Tro··· 🔒
Plumbing Residential Single Family FAST WATER HEATER COMPANY
2026-08-04 Plumbing
Source type: 03b. Plumbing (by Contractor) - Multi-Family - without Plan Review*
 81 CLAY ST Seattle WA 98121
Owner: Jas··· 🔒
Plumbing Residential Multi-Family FAST WATER HEATER COMPANY
2026-08-04 Plumbing
Source type: 04b. Plumbing (by Contractor) - Small Commercial - without Plan Review*
 4515 16TH AVE NE Seattle WA 98105
Owner: UNI··· 🔒
Plumbing Small Commercial LOYAL MECHANICAL INC
2026-08-04 Plumbing
Source type: 04b. Plumbing (by Contractor) - Small Commercial - without Plan Review*
 600 UNIVERSITY ST Seattle WA 98101
Owner: Was··· 🔒
Plumbing Small Commercial AMERICAN MECHANICAL CORP
2026-08-04 Plumbing
Source type: 01. Plumbing - Installed by Homeowner
 10309 42ND AVE NE Seattle WA 98125
Owner: Jam··· 🔒
Plumbing DIY Residential James Spies
2026-08-04 Plumbing
Source type: 01. Plumbing - Installed by Homeowner
 106 NW 60TH ST Seattle WA 98107
Owner: Eva··· 🔒
Plumbing DIY Residential Evan Kentop
2026-08-04 New Construction
Source type: OSS Installation Permit - New or Replacement Pressurized System for Single Family
 19745 NE 127TH PL WOODINVILLE WA 98077
Owner: Alv··· 🔒
Pressurized System (New)-Single Family residential COLE SEPTIC DESIGN
2026-08-04 Plumbing
Source type: 05a. Plumbing (by Contractor) - Large Commercial with Plan Review*
 705 5TH AVE Unit: L-44 to 50 Seattle WA 98104
Owner: Nig··· 🔒
Plumbing Large Commercial 5A REDLINE MECHANICAL
2026-08-04 Plumbing
Source type: 01. Plumbing - Installed by Homeowner
 401 20TH AVE Seattle WA 98122
Owner: Jea··· 🔒
Plumbing DIY Residential Jean Richard Desire
2026-08-04 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 20220 NE 133RD ST WA 98077
Owner: Bri··· 🔒
Natural Gas Residential residential Glacier Heating & Cooling
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 1763 19TH AVE S Seattle WA 98144
Owner: Chi··· 🔒
Plumbing Residential Single Family FAST WATER HEATER COMPANY
2026-08-04 General Construction
Source type: Complex - Event 02
 — Complex - Event 02 Parker, Janice
2026-08-04 HVAC
Source type: Building Mechanical Residential
 23608 NE 54TH PL, REDMOND WA 98053 23608 NE 54TH PL, REDMOND, WA 98053 furnace —
2026-08-04 General Construction
Source type: Inspection Report - WindF-F
 826 SW 108TH ST, 98146 HUA FIRE DAMAGE INSPECTION —
2026-08-04 Addition
Source type: Residential Building - Addition-Improvement
 12948 177TH PL NE, REDMOND WA 98052 MARTINEZ GARAGE AND DECK —
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 5726 61ST AVE NE Seattle WA 98105
Owner: ADV··· 🔒
Plumbing Residential Single Family ADVANCED PLUMBING II, LLC
2026-08-04 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 12026 15TH AVE NE Seattle WA 98125
Owner: Joh··· 🔒
Plumbing Residential Single Family JDA PLUMBING, LLC
2026-08-03 HVAC
Source type: Building Mechanical Residential
 19325 133RD AVE SE, RENTON WA 98058 19325 133RD AVE SE, RENTON, WA 98058 Veniamin Gnatyuk
📞 (•••) •••-••••
2026-08-03 HVAC
Source type: Building Mechanical Residential
 16515 COLUMBIA AVE SW, VASHON WA 98070 16515 COLUMBIA AVE SW, VASHON, WA 98070 heat pump Brennan Heating
📞 (•••) •••-••••
2026-08-03 HVAC
Source type: Building Mechanical Residential
 4905 S 293RD ST, AUBURN WA 98001 4905 S 293RD ST, AUBURN, WA 98001 furnace, heat pump Daryl Clark
📞 (•••) •••-••••
2026-08-03 HVAC
Source type: Building Mechanical Residential
 6139 204TH DR NE, REDMOND WA 98053 6139 204TH DR NE, REDMOND, WA 98053 furnace Greenwood Heating and AC
📞 (•••) •••-••••
2026-08-03 HVAC
Source type: Building Mechanical Residential
 13181 ADAIR CREEK WAY NE, REDMOND WA 98053 13181 ADAIR CREEK WAY NE, REDMOND, WA 98053 heat pump Lucinda Honeycutt
📞 (•••) •••-••••
2026-08-03 HVAC
Source type: Building Mechanical Residential
 5805 284TH AVE SE, ISSAQUAH WA 98027 5805 284TH AVE SE, ISSAQUAH, WA 98027 heat pump South West Plumbing
📞 (•••) •••-••••
2026-08-03 HVAC
Source type: Building Mechanical Residential
 15711 SE 178TH PL, RENTON WA 98058 15711 SE 178TH PL, RENTON, WA 98058 heat pump Home Comfort Alliance
📞 (•••) •••-••••
2026-08-03 HVAC
Source type: Building Mechanical Residential
 15428 SE LAKE MONEYSMITH RD, AUBURN WA 98092 15428 SE LAKE MONEYSMITH RD, AUBURN, WA 98092 heat pump Nate Harger
📞 (•••) •••-••••
2026-08-03 HVAC
Source type: Building Mechanical Residential
 4609 332ND AVE SE, FALL CITY WA 98024 4609 332ND AVE SE, FALL CITY, WA 98024 heat pump Lucinda Honeycutt
📞 (•••) •••-••••
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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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