King County Building Permits & Property Data

Heads up: The public source includes contractor names on some current permit records, but coverage has not yet reached PermitGrab's market-level reporting threshold. This page focuses on permit records and property data; contractor names are shown where the public source publishes them.

4,293 indexed permits · King County, Washington.

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King County building permits — key stats
Newest permit 2026-09-21

PermitGrab tracks 4,293 building permits in King County, WA as of 2026-09-21.

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:

PermitGrab Pro is a $149/mo subscription for current municipal permit, property, and code-violation records. Some contractor names are available from the official source, but coverage has not reached market-level reporting. This page focuses on the permit and property signals it does publish. 14-day Pro trial below — choose your market first, then card required at checkout · cancel anytime before day 14.

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 — addresses, project details, and property activity where available. 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.

4,293
Indexed Permits
Contractor count unavailable
Property Owners · count unavailable
2026-09-22
Last Updated
Source date: 2026-09-21
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New permits and property activity sent when new public records are available.

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Published permit & code records

Permit data through 2026-09-21
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4,293 permits sorted by date

⇄ Swipe or scroll to see address & contractor

Date Type Value Address Details Contractor / Status Save
2026-08-07 Fire Protection 24818 SE 433RD ST Installation of a new sewer lift station on an easement on the property at the n… 100 kW
2026-08-07 General Construction 7595 S LAUREL ST ENLARGE EXISTING DECK ON FRONT OF HOUSE Tom Steffes
2026-08-07 HVAC/Mech 25836 GOLD BEACH DR SW CONVERT 652 SF TWO-CAR GARAGE TO STORAGE, MECHANICAL SPACE, AND KEEP ONE-CAR GAR… 652 roof sf replacement Sarah Narrow
2026-08-07 General Construction 5430 45TH AVE W Seattle WA 98199
Owner: Mr.··· 🔒
Natural Gas Residential residential QUALITY PLUMBING
2026-08-07 Plumbing 4746 45TH AVE NE Seattle WA 98105
Owner: Kel··· 🔒
Plumbing Residential Single Family BIGFOOT PLUMBING LLC
2026-08-07 General Construction 416 NE 72nd ST seattle WA 98115 General Food Plan Review elliott, morgan
2026-08-07 General Construction 9834 351ST AVE SE SNOQUALMIE WA 98065
Owner: BAL··· 🔒
Pressurized System (New)-Single Family residential JENSEN ENGINEERING INC
2026-08-07 Plumbing 451 LAKE WASHINGTON BLVD E Seattle WA 98112
Owner: Kev··· 🔒
Plumbing Residential Single Family STAK'S PLUMBING LLC
2026-08-07 Plumbing 4432 A S HOLLY ST Seattle WA 98118
Owner: SCH··· 🔒
Plumbing Residential Single Family SCHULTE PLUMBING LLC
2026-08-07 Temporary Temporary Event Coordinator Ten Trails
2026-08-07 Plumbing 4430 B S HOLLY ST Seattle WA 98118
Owner: SCH··· 🔒
Plumbing Residential Single Family SCHULTE PLUMBING LLC
2026-08-07 Plumbing 110 NW 59TH ST Seattle WA 98107
Owner: Cra··· 🔒
Plumbing Residential Single Family RE-BATH OF SEATTLE
2026-08-07 HVAC/Mech 12505 188TH LN SE 1 AIR HANDLER; 1 HEAT PUMP heat pump Patrick Converse
2026-08-07 Plumbing 8200 WALLINGFORD AVE N Seattle WA 98103
Owner: ARC··· 🔒
Backflow Assembly Acco Engineered Systems
2026-08-07 Plumbing 336 N 80TH ST SEATTLE WA 98103
Owner: Don··· 🔒
Plumbing Residential Single Family Done Right Plumbing @ Sewer Repair LLC
2026-08-07 General Construction Complex - Single Penlington, Christopher
2026-08-07 General Construction Complex - Event 03 Dumpling Tzar
2026-08-07 Plumbing 5862 MCKINLEY PL N Seattle WA 98103
Owner: Nic··· 🔒
Plumbing Residential Single Family SMART PLUMBING SOLUTIONS LLC
2026-08-07 HVAC/Mech 11145 UPPER PRESTON RD SE 1 FURNACE; 1 HEAT PUMP furnace, heat pump Kathleen Kappen
2026-08-07 General Construction 31210 EAST LAKE MORTON DR SE CONSTRUCT A 1 STORY, UNHEATED SHOP Shondra Goss
2026-08-07 HVAC/Mech 4204 272ND AVE NE 1 AIR HANDLER; 1 HEAT PUMP heat pump Patty Rice
2026-08-07 General Construction 16015 223RD AVE NE CONTRUCT A DECK, A PORTION OF THE DECK WILL BE COVERED. Thomas Baker
2026-08-07 HVAC/Mech 2909 B ST SE 1 HEATER - WOOD STOVE
2026-08-07 General Construction 5545 WOODLAWN AVE N Seattle WA 98103
Owner: Mod··· 🔒
Natural Gas Residential residential Heating Works LLC
2026-08-07 General Construction 527 N 70TH ST Seattle WA 98103
Owner: Mig··· 🔒
Natural Gas Residential residential NORTHSHORE HEATING LLC
2026-08-07 General Construction Complex - Event 16+ Habibi Tacos LLC
2026-08-07 Plumbing 4401 S DAWSON ST Seattle WA 98118
Owner: REY··· 🔒
Plumbing Residential Single Family REY'S PLUMBING & MECHANICAL LLC
2026-08-07 General Construction 18238 NE 194TH ST WOODINVILLE WA 98077
Owner: Jos··· 🔒
Pressurized System (New)-Single Family residential Fresh N Clean Septic LLC
2026-08-07 Plumbing 5629 A FAUNTLEROY WAY SW Seattle WA 98136
Owner: Car··· 🔒
Plumbing Residential Single Family Carlson Mechanical
2026-08-07 General Construction 3916 S BRANDON ST Seattle WA 98118
Owner: MAX··· 🔒
Natural Gas Residential residential MAX HEAT LLC
2026-08-07 General Construction Moderate - Single CORINTHIAN YACHT CLUB
2026-08-07 General Construction 18942 179TH PL SE WA 98058
Owner: ala··· 🔒
Natural Gas Residential residential Washington Generators LLC
2026-08-07 HVAC/Mech 8401 309TH PL SE 1 AIR HANDLER; 1 HEAT PUMP heat pump Patrick Converse
2026-08-07 Plumbing 400 E PINE ST Seattle WA 98122
Owner: Cir··· 🔒
Plumbing Small Commercial ECO ELECTRIC AND PLUMBING
2026-08-07 Plumbing 8051 S 118TH ST WA 98178
Owner: MAS··· 🔒
Backflow Assembly JC PLUMBING LLC
2026-08-07 Plumbing 4432 B S HOLLY ST Seattle WA 98118
Owner: SCH··· 🔒
Plumbing Residential Single Family SCHULTE PLUMBING LLC
2026-08-07 General Construction 28035 SE 224TH ST MAPLE VALLEY WA 98038
Owner: KYL··· 🔒
Pressurized System (New)-Single Family residential STREEPY SEPTIC DESIGN LLC
2026-08-07 Plumbing 11042 148TH AVE SE WA 98059
Owner: Jen··· 🔒
Plumbing Residential Single Family AS YOU WISH ELECTRIC
2026-08-07 General Construction 27201 SE 400TH WAY ENUMCLAW WA 98022 Pressurized System (New)-Single Family residential HUARD SEPTIC DESIGN & MONITORING
2026-08-07 General Construction 0, WA KENNEDY LOT 2 - SINGLE FAMILY RESIDENCE residential
2026-08-07 General Construction 36819 1ST WAY SW FEDERAL WAY WA 98023
Owner: CLY··· 🔒
Pressurized System (New)-Single Family residential NW DESIGN & PROPERTY DEVELOPEMENT LLC
2026-08-06 HVAC/Mech 23980 NE GREENS CROSSING RD, REDMOND WA 98053 23980 NE GREENS CROSSING RD, REDMOND, WA 98053 heat pump Matthew Allred
📞 (•••) •••-••••
2026-08-06 HVAC/Mech 27607 SE 392ND ST, ENUMCLAW WA 98022 27607 SE 392ND ST, ENUMCLAW, WA 98022 furnace, heat pump Pavlo Bohoutdinov
📞 (•••) •••-••••
2026-08-06 HVAC/Mech 12439 84TH AVE S, SEATTLE WA 98178 12439 84TH AVE S, SEATTLE, WA 98178 furnace, heat pump Home Comfort Alliance
📞 (•••) •••-••••
2026-08-06 HVAC/Mech 29015 39TH AVE S, AUBURN WA 98001 29015 39TH AVE S, AUBURN, WA 98001 heat pump Katy Kehle
📞 (•••) •••-••••
2026-08-06 HVAC/Mech 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 CONSTRUCT 2-STORY 5-BDRM SINGLE FAMILY RESIDENCE W/ ATTACHED GARAGE AND COVERED … 2-story residential Cliff Williams
📞 (•••) •••-••••
2026-08-06 General Construction 6044 30TH AVE NE Seattle WA 98115
Owner: MAR··· 🔒
Natural Gas Residential residential GEORGE GAS PIPING LLC
2026-08-06 General Construction 4008 S 302ND PL WORK INCLUDES EXPANDING THE FIRST-FLOOR FAMILY ROOM AND KITCHEN, AS WELL AS RELO… Wade Bowen
📞 (•••) •••-••••
2026-08-06 Plumbing 9515 SW GORSUCH RD WA 98070
Owner: Wil··· 🔒
Backflow Assembly TRI STATE PLUMBING
📞 (•••) •••-••••
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Permit Types in King County
Construction Activity in King County

New building permits in King County, Washington show where construction activity is occurring. Filter the public records by trade, date, address, and project value to research active projects and property activity. Contractor names are available on some current records; contact coverage varies by filing.

About King County Building Permits

King County, Washington processes building permits covering residential construction, commercial buildouts, renovations, and specialty trade work. PermitGrab tracks 4293+ King County building permits — newest permit date: 2026-09-22 from official city sources.

Each record can show the project address, scope, permit type, and value where the city publishes them. The source-published contractor records do not meet the coverage threshold for this city. PermitGrab does not represent this as contractor-contact coverage. Where property-owner records are available, they are matched to permit addresses separately.

How to use King County permit data

Filter the current records by trade, date, address, or project value to research construction activity. The most useful workflow in this market is verifying the project signal first, then using the property data that is actually available for that address.

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

Who appears in King County permit records?

PermitGrab indexes 4,293 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 2026-09-21. Newest permit date: 2026-09-22. 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 4,293 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.

How to look up King County building permits

Search recent King County, WA building permits by address, 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, see the King County Permit Pulse.

Nearby Washington Cities — explore building permits in other Washington cities

Monitor King County permit & property activity

Email alerts when new public records are available for new permits and property activity. Contractor names are shown where the current public filing includes them; contact coverage varies by record. Owner information is shown only where it can be matched from available public 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 4293 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 can research King County activity by filtering current permits by trade, location, and project type. Some current permit records include contractor names; use those source-published names alongside the project details. Property information is shown only where public records can be matched.

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. Some current permit records include source-published contractor names; contact fields appear only where published or matched. Property information is available only where public records can be matched. 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.

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.
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King County permits by trade

King County addition permits King County concrete & masonry permits King County demolition permits King County electrical permits King County fire protection permits King County general construction permits King County hvac permits King County interior renovation permits King County landscaping permits King County new construction permits King County plumbing permits King County roofing permits King County structural permits King County windows & doors permits
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