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.

4,201 indexed permits · King County, Washington.

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King County building permits — key stats
Newest permit 2026-09-20

PermitGrab tracks 4,201 building permits in King County, WA as of 2026-09-20.

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.

4,201
Indexed Permits
Contractor count unavailable
Property Owners · count unavailable
2026-09-21
Last Updated
Source date: 2026-09-20
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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 2026-09-20
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4,201 permits sorted by date

⇄ Swipe or scroll to see address & contractor

Date Type Value Address Details Contractor / Status Save
2026-08-01 Plumbing 4111 SW IDA ST Unit: B SEATTLE WA 98136 Plumbing Residential Single Family BETTER FLOW PLUMBING LLC
2026-08-01 Plumbing 4111 SW IDA ST Unit: A SEATTLE WA 98136 Plumbing Residential Single Family BETTER FLOW PLUMBING LLC
2026-08-01 Plumbing 7318 54TH AVE NE SEATTLE WA 98115 Plumbing DIY Residential Hayden Hamilton
2026-07-31 HVAC/Mech 12909 469TH PL SE, NORTH BEND WA 98045 12909 469TH PL SE, NORTH BEND, WA 98045 furnace, heat pump James Mallory
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2026-07-31 HVAC/Mech 14838 206TH AVE SE, RENTON WA 98059 14838 206TH AVE SE, RENTON, WA 98059 furnace Karen Matheney
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2026-07-31 HVAC/Mech 15726 SE 232ND ST, KENT WA 98042 15726 SE 232ND ST, KENT, WA 98042 heat pump Brennan Heating
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2026-07-31 HVAC/Mech 19509 181ST AVE NE, WOODINVILLE WA 98077 19509 181ST AVE NE, WOODINVILLE, WA 98077 heat pump corey tolmich
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2026-07-31 HVAC/Mech 13448 MAHONIA PL NE, REDMOND WA 98053 13448 MAHONIA PL NE, REDMOND, WA 98053 furnace BelRed Permitting Department
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2026-07-31 HVAC/Mech 28419 53RD AVE S, AUBURN WA 98001 28419 53RD AVE S, AUBURN, WA 98001 furnace, heat pump Matthew Allred
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2026-07-31 HVAC/Mech 13165 ADAIR CREEK WAY NE, REDMOND WA 98053 13165 ADAIR CREEK WAY NE, REDMOND, WA 98053 furnace, heat pump Karen Matheney
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2026-07-31 HVAC/Mech 29314 NE 126TH ST, DUVALL WA 98019 29314 NE 126TH ST, DUVALL, WA 98019 heat pump Renee Visitacion
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2026-07-31 HVAC/Mech 37826 31ST AVE S, FEDERAL WAY WA 98003 37826 31ST AVE S, FEDERAL WAY, WA 98003 furnace, heat pump BRIAN GRIFFIS
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2026-07-31 HVAC/Mech 27523 SANDY SHORES DR SW, VASHON WA 98070 27523 SANDY SHORES DR SW, VASHON, WA 98070 heat pump Vielka Ansari
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2026-07-31 Fire Protection $810,059 0, WA VB HOMES SINGLE FAMILY RESIDENCE (SPRINKLERS REQUIRED) residential ×2
2026-07-31 Commercial Shell $20,000 17250 140TH AVE SE, RENTON WA 98058 BANK OF AMERICA - TENANT IMPROVEMENT
2026-07-31 General Construction $338,590 23419 107TH AVE SW, VASHON WA 98070 (ABC) MEDEIROS - ABC DETACHED AG STRUCTURE
2026-07-31 General Construction $191,655 14600 SE 178TH PL, RENTON WA 98058 BEYENE AFH ADDITION AND INTERIOR ALTERATION - INSR25-0132
2026-07-31 General Construction 49114 SE 115TH ST, NORTH BEND WA 98045 (PRO) TOOMEY FOUNDATION REPAIR - RELATED TO FLOD26-0164
2026-07-31 General Construction 0, WA Macdonald clearing and grading
2026-07-31 Plumbing 2814 MARTIN LUTHER KING JR WAY S Seattle WA 98144 Plumbing Residential Single Family SEATOWN ELECTRIC HEATING & AIR
2026-07-31 Plumbing 7525 32ND AVE NW Seattle WA 98117 Plumbing Residential Single Family LOYAL MECHANICAL INC
2026-07-31 Plumbing 3210 S DEARBORN ST Seattle WA 98144 Plumbing DIY Residential Kerri Ladiges
2026-07-31 Plumbing 333 8TH AVE N Seattle WA 98109 Plumbing Small Commercial MacDonald-Miller Facility Solutions LLC
2026-07-31 Plumbing 10862 DIXON DR S WA 98178 Plumbing DIY Residential Ken Li
2026-07-31 Plumbing 8648 BEACON AVE S Seattle WA 98118 Plumbing Residential Single Family Affortable West Coast Plumbing
2026-07-31 Plumbing 3016 NE 91ST ST Seattle WA 98115 Backflow Assembly NORTHWEST PLUMBING CONTRS INC
2026-07-31 General Construction 42811 SE 120TH ST WA 98045 Pressurized System (New)-Single Family residential Stuth Company Inc.
2026-07-31 General Construction 3202 39TH AVE SW Seattle WA 98116 Natural Gas Residential residential Washington Energy Services
2026-07-31 Plumbing 10605 16TH AVE S WA 98168 Plumbing Residential Single Family REPIPE PLUMBING SOLUTIONS LLC
2026-07-31 Temporary Temporary Event Coordinator Abdulkadir, Abubakr
2026-07-31 General Construction 23319 NE 142ND PL, WOODINVILLE WA 98077 (PRO) KRISHNASWAMY FOUNDATION REPAIR
2026-07-31 HVAC/Mech 5805 284TH AVE SE, ISSAQUAH WA 98027 5805 284TH AVE SE, ISSAQUAH, WA 98027
2026-07-30 HVAC/Mech 18702 SE 144TH ST, RENTON WA 98059 18702 SE 144TH ST, RENTON, WA 98059 Matthew Allred
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2026-07-30 HVAC/Mech 41409 228TH AVE SE, ENUMCLAW WA 98022 41409 228TH AVE SE, ENUMCLAW, WA 98022 Kurt Karimov
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2026-07-30 HVAC/Mech 7051 S LAKERIDGE DR, SEATTLE WA 98178 7051 S LAKERIDGE DR, SEATTLE, WA 98178 Bruno Centenaro
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2026-07-30 HVAC/Mech 13608 SE 186TH PL, RENTON WA 98058 13608 SE 186TH PL, RENTON, WA 98058 Kim Hughes
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2026-07-30 Plumbing 4203 CORLISS AVE N Seattle WA 98103 Plumbing Residential Single Family Bluelam Plumbing LLC
2026-07-30 HVAC/Mech 10847 3RD AVE S, SEATTLE WA 98168 10847 3RD AVE S, SEATTLE, WA 98168 Vielka Ansari
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2026-07-30 HVAC/Mech 17419 NE 126TH PL 1 HEAT PUMP heat pump Victoriya Sushchik
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2026-07-30 HVAC/Mech 17072 WOODSIDE DR SE 1 FURNACE; 1 AIR CONDITIONER furnace Brennan Heating
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2026-07-30 HVAC/Mech 36614 27TH AVE S, FEDERAL WAY WA 98003 36614 27TH AVE S, FEDERAL WAY, WA 98003 South West Plumbing
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2026-07-30 HVAC/Mech 44504 SE 148TH ST 1 DUCTLESS HEAT PUMP heat pump Greenwood Heating and AC
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2026-07-30 HVAC/Mech 22217 233RD AVE SE, MAPLE VALLEY WA 98038 22217 233RD AVE SE, MAPLE VALLEY, WA 98038 Brennan Heating
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2026-07-30 General Construction 11323 206TH PL SE WA 98027 Natural Gas Residential residential GEORGE GAS PIPING LLC
2026-07-30 HVAC/Mech 28847 37TH AVE S, AUBURN WA 98001 28847 37TH AVE S, AUBURN, WA 98001 Brennan Heating
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2026-07-30 HVAC/Mech 20828 SE 281ST ST, KENT WA 98042 20828 SE 281ST ST, KENT, WA 98042 Matthew Allred
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2026-07-30 HVAC/Mech 10738 169TH AVE SE 1 AIR CONDITIONER Greenwood Heating and AC
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2026-07-30 HVAC/Mech 25524 SE 159TH ST, ISSAQUAH WA 98027 25524 SE 159TH ST, ISSAQUAH, WA 98027 Georgia Paschen
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2026-07-30 General Construction 4000 WHITMAN AVE N Seattle WA 98103 Natural Gas DIY Residential residential Mike Lettunich
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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 4201+ King County building permits — newest permit date: 2026-09-20 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 4,201 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 2026-09-20. Newest permit date: 2026-09-20. 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 4,201 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 4201 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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