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.

4,499 indexed permits · King County, Washington.

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King County building permits — key stats
Newest permit 2026-09-23

PermitGrab tracks 4,499 building permits in King County, WA as of 2026-09-23.

✓ 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.

4,499
Indexed Permits
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Contractor count unavailable
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Property Owners · count unavailable
2026-09-25
Last Updated
Updated recently · 2026-09-23
📊 View King County source-dated permit records →

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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 2026-09-23

4,499 permits sorted by date

⇄ Swipe or scroll to see address & contractor

Date Type Value Address Details Contractor / Status Save
2026-09-01 Plumbing — 4211 A 42ND AVE S Seattle WA 98118
Owner: CLA··· 🔒
Plumbing Residential Single Family STAK'S PLUMBING LLC
2026-09-01 Plumbing — 4211 B 42ND AVE S Seattle WA 98118
Owner: CLA··· 🔒
Plumbing Residential Single Family STAK'S PLUMBING LLC
2026-09-01 General Construction — 5464 119TH AVE SE Bellevue WA 98006 VGB Compliance WMS Aquatics
2026-09-01 Fire Protection — 27626 SE 464TH ST Install new fire sprinkler system 13D NFPA sprinkler Byron Morales
2026-09-01 Signage — 19616 SE 310TH PL Building an accessory structure to be used as a home office and fitness studio. … —
2026-09-01 General Construction — 7531 408TH AVE SE, SNOQUALMIE WA 98065 MACCAULAY - DETACHED GARAGE - 28301 MacAulay —
2026-09-01 General Construction — 9230 KELLY RD NE, CARNATION WA 98014 BUHL ACCESSORY LIVING QUARTERS —
2026-09-01 HVAC/Mech — 10004 1ST AVE SW, SEATTLE WA 98146 10004 1ST AVE SW, SEATTLE, WA 98146 heat pump Brooke Sugden
2026-09-01 HVAC/Mech — 24212 249TH AVE SE, MAPLE VALLEY WA 98038 24212 249TH AVE SE, MAPLE VALLEY, WA 98038 furnace, heat pump Clara Diaz
2026-09-01 Plumbing — 1151 N 94TH ST Unit: 45 Seattle WA 98103
Owner: STR··· 🔒
Plumbing Residential Multi-Family PEREZ PLUMBING INC
2026-09-01 Plumbing — 3049 29TH AVE W Seattle WA 98199
Owner: TEV··· 🔒
Plumbing Residential Single Family [email protected]
2026-09-01 Plumbing — 11 W ALOHA ST Seattle WA 98119
Owner: Bay··· 🔒
Plumbing Small Commercial PEREZ PLUMBING INC
2026-09-01 General Construction — — Moderate - Multiple Johnee Tuani
2026-09-01 Plumbing — 3052 south 378th street federal way WA 98003
Owner: Mik··· 🔒
Plumbing Residential Single Family Curtis Construction Plumbing and Electrical LLP
2026-09-01 General Construction — 11908 RENTON AVE S The proposed project involves the repair and replacement of approximately 55 squ… replacement Robert Greaves
2026-09-01 Fire Protection — 4301 324TH AVE SE Install new NFPA 13D fire sprinkler system in mobile home/ADU per plan. sprinkler Dave Clarke
2026-09-01 Fire Protection — 44516 SE 64TH ST TO FINAL FIRP24-0349 - NEED PRESSURE, BUCKET AND FINAL sprinkler Pye-Barker Fire & Safety LLC
2026-09-01 HVAC/Mech — 23915 242ND WAY SE, MAPLE VALLEY WA 98038 23915 242ND WAY SE, MAPLE VALLEY, WA 98038 Ken Prusia
2026-09-01 HVAC/Mech — 31565 SE 278TH PL, RAVENSDALE WA 98051 31565 SE 278TH PL, RAVENSDALE, WA 98051 furnace, heat pump Clara Diaz
2026-09-01 Electrical — 0, WA TMOBILE PRESTON FALL CITY —
2026-09-01 Solar — 9515 SW GORSUCH RD, VASHON WA 98070 CREEKSIDE VILLAGE ON VASHON - TENANT IMPROVEMENT - Vashon Creekside PV Upgrade solar Solar PV —
2026-09-01 Plumbing — 1151 N 94TH ST Unit: 41 Seattle WA 98103
Owner: STR··· 🔒
Plumbing Residential Multi-Family PEREZ PLUMBING INC
2026-09-01 Plumbing — 5921 23RD AVE S Seattle WA 98108
Owner: AAR··· 🔒
Plumbing Residential Single Family DRAIN PRO PLUMBING INC
2026-09-01 Plumbing — 8511 15TH AVE NW Seattle WA 98117
Owner: Ele··· 🔒
Plumbing Small Commercial STATE MECHANICAL COMPANY
2026-09-01 Plumbing — 8551 GREENWOOD AVE N Seattle WA 98103
Owner: Ros··· 🔒
Plumbing Residential Single Family HP PLUMBING & HEATING INC
2026-09-01 Plumbing — 11018 MERIDIAN AVE N Seattle WA 98133
Owner: NAV··· 🔒
Plumbing Small Commercial NAVY PLUMBING LLC
2026-09-01 General Construction — 6310 402ND AVE SE SNOQUALMIE WA 98065
Owner: Pop··· 🔒
Pressurized System (New)-Single Family residential Fresh N Clean Septic LLC
2026-09-01 Plumbing — 2201 QUEEN ANNE AVE N Seattle WA 98109
Owner: Eri··· 🔒
Plumbing Small Commercial Acclaim Plumbing and Drain
2026-09-01 Plumbing — 8613 224TH AVE NE WA 98053
Owner: Saa··· 🔒
Plumbing Residential Single Family FAST WATER HEATER COMPANY
2026-09-01 General Construction — 1417 10TH AVE W Seattle WA 98119
Owner: MOO··· 🔒
Natural Gas Residential residential ABSOLUTE COMFORT HEATING AND COOLING LLC
2026-09-01 Plumbing — 412 NE 72ND ST Seattle WA 98115
Owner: Pre··· 🔒
Backflow Assembly Premier Plumbing
2026-09-01 General Construction — 18801 170TH PL NE WOODINVILLE WA 98072
Owner: Han··· 🔒
Pressurized System (New)-Single Family residential Northlake Concrete Products Inc.
2026-09-01 General Construction — 19219 SE AUBURN BLACK DIAMOND RD, AUBURN WA 98092 (PRO) NOVI HOMES REMODEL- REVISION TO DWEL26-0128 / B99L3733 —
2026-09-01 General Construction — 0, WA SKYWAY CREST LOT 2 residential —
2026-09-01 Commercial Shell — 17340 140TH AVE SE, RENTON WA 98058 XFINITY - TENANT IMPROVEMENT - Xfinity TI —
2026-09-01 General Construction — 23710 NE 170TH ST, WOODINVILLE WA 98077 WINTER - DETACHED ACCESSORY STRUCTURE - Winter Gazebo Replacement residential —
2026-09-01 General Construction — 18804 170th PL NE Woodinville WA 98072
Owner: Han··· 🔒
Pressurized System (New)-Single Family residential Northlake Concrete Products Inc.
2026-09-01 Plumbing — 600 BROADWAY Seattle WA 98122
Owner: Hea··· 🔒
Plumbing Small Commercial MacDonald-Miller Facility Solutions LLC
2026-09-01 Plumbing — 1151 N 94TH ST Unit: 44 Seattle WA 98103
Owner: STR··· 🔒
Plumbing Residential Multi-Family PEREZ PLUMBING INC
2026-09-01 Plumbing — 1151 N 94TH ST Unit: 43 Seattle WA 98103
Owner: STR··· 🔒
Plumbing Residential Multi-Family PEREZ PLUMBING INC
2026-09-01 Plumbing — 1151 N 94TH ST Unit: 42 Seattle WA 98103
Owner: STR··· 🔒
Plumbing Residential Multi-Family PEREZ PLUMBING INC
2026-09-01 Plumbing — 5268 18TH AVE NE Seattle WA 98105
Owner: Chr··· 🔒
Plumbing DIY Residential Christian Taylor
2026-09-01 Plumbing — 6711 TOLT RIVER RD NE WA 98014
Owner: Lew··· 🔒
Plumbing Residential Single Family SOS PLUMBING AND EMERGENCY SVC
2026-09-01 General Construction — 10408 RAINIER AVE S Seattle WA 98178
Owner: Tod··· 🔒
Natural Gas Residential residential ELITE GAS PIPING LLC
2026-09-01 Plumbing — 4209 A 42ND AVE S Seattle WA 98118
Owner: CLA··· 🔒
Plumbing Residential Single Family STAK'S PLUMBING LLC
2026-09-01 Plumbing — 4209 B 42ND AVE S Seattle WA 98118
Owner: CLA··· 🔒
Plumbing Residential Single Family STAK'S PLUMBING LLC
2026-09-01 Plumbing — 4213 42ND AVE S Seattle WA 98118
Owner: CLA··· 🔒
Plumbing Residential Single Family STAK'S PLUMBING LLC
2026-09-01 Plumbing — 13531 NORTHSHIRE RD NW Seattle WA 98177
Owner: Pat··· 🔒
Plumbing Residential Single Family TIMELESS PLUMBING LLC
2026-09-01 General Construction — 24131 99TH AVE SW WA 98070
Owner: Joh··· 🔒
Pressurized System (New)-Single Family residential HD QUALITY SEPTIC DESIGN
2026-09-01 General Construction — 32800 139TH PL SE WA 98092
Owner: Pac··· 🔒
Natural Gas Residential residential BOB'S HEATING & A/C LLC
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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 4499+ King County building permits — newest permit date: 2026-09-25 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 4,499 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 2026-09-23. Newest permit date: 2026-09-25. 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 4,499 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 4499 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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