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
2026-08-13 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 5532 NE 55TH ST Seattle WA 98105
Owner: Joh··· 🔒
Plumbing Residential Single Family Aron Schneider
2026-08-13 New Construction
Source type: OSS Installation Permit - New or Replacement Pressurized System for Single Family
 30782 SE 408TH ST ENUMCLAW WA 98022
Owner: RID··· 🔒
Pressurized System (New)-Single Family residential Enumclaw Excavating Inc
2026-08-13 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 14056 23RD PL NE Seattle WA 98125
Owner: Ted··· 🔒
Plumbing Residential Single Family HD PARTNERS
2026-08-13 General Construction
Source type: Moderate - Event 07
 — Moderate - Event 07 Tsukime Matcha LLC
2026-08-13 Plumbing
Source type: 01. Plumbing - Installed by Homeowner
 16811 SE 134TH ST WA 98059
Owner: Bin··· 🔒
Plumbing DIY Residential Binh Dinh
2026-08-13 General Construction
Source type: Complex - Event 10
 — Complex - Event 10 Peace Loaf
2026-08-13 General Construction
Source type: Moderate - Event 01
 — Moderate - Event 01 Soups Made With Love
2026-08-13 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 220 31ST AVE E Seattle WA 98112
Owner: ADV··· 🔒
Plumbing Residential Single Family ADVANCED PLUMBING II, LLC
2026-08-13 Plumbing
Source type: Plumbing Permit from Previous Permitting System
 900 University Street Seattle 98101 Legacy Plumbing Permit Holmberg Company
2026-08-13 Plumbing
Source type: Septic System Time of Sale Inspection Waiver Request
 842 SW 305TH ST FEDERAL WAY WA 98023
Owner: Bar··· 🔒
OSS Time of Sale Waiver Request —
2026-08-13 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 13103 Palatine Ave N AVE Seattle WA 98133
Owner: RUD··· 🔒
Plumbing Residential Single Family RUDY'S PLUMBING INC
2026-08-13 Fire Protection
Source type: Fire/Fire Permit Systems/Sprinkler/Residential
 10773 344TH AVE NE 13D fire sprinkler system sprinkler Mike Hutchinson
2026-08-13 Fire Protection
Source type: Fire/Fire Permit Systems/Sprinkler/Residential
 9834 351ST AVE SE 13D fire sprinkler system sprinkler Mike Hutchinson
2026-08-13 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 4520 BEACH DR SW Seattle WA 98116
Owner: Lak··· 🔒
Natural Gas Residential residential Lakeside Plumbing and Heating, Inc.
2026-08-13 Plumbing
Source type: 41. Backflow Assembly Permit - By Contractor
 6026 35TH AVE NW Seattle WA 98107
Owner: Cai··· 🔒
Backflow Assembly Greenwood Heating and Home Services
2026-08-13 Plumbing
Source type: 41. Backflow Assembly Permit - By Contractor
 1301 R 5th Ave NE Unit: L230 Light-Rail Seattle WA 98125
Owner: No ··· 🔒
Backflow Assembly Acco
2026-08-13 Temporary
Source type: Temporary Event Coordinator
 — Temporary Event Coordinator Enumclaw Expo & Events Association
2026-08-13 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 4055 54TH AVE SW Seattle WA 98116
Owner: Rob··· 🔒
Plumbing Residential Single Family MAESTRO PLUMBING LLC
2026-08-13 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 5402 SW DAKOTA ST Seattle WA 98116
Owner: Rob··· 🔒
Plumbing Residential Single Family MAESTRO PLUMBING LLC
2026-08-13 Interior Renovation
Source type: Water Recreation Facility Plan Review - Multiple Renovations
 3402 I ST NE Auburn WA 98002 Multiple Renovations Jen Anderson
2026-08-13 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 19747 SE 277TH ST WA 98042
Owner: Mic··· 🔒
Plumbing Residential Single Family FAST WATER HEATER COMPANY
2026-08-13 Plumbing
Source type: 41. Backflow Assembly Permit - By Contractor
 1191 2ND AVE, SEATTLE, WA 98101
Owner: 2ND··· 🔒
Backflow Assembly SJS Mechanical Services
2026-08-13 Plumbing
Source type: 05a. Plumbing (by Contractor) - Large Commercial with Plan Review*
 301 W NICKERSON ST SEATTLE WA 98119
Owner: SEA··· 🔒
Plumbing Large Commercial 5A Otter Plumbing LLC
2026-08-13 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 218 31ST AVE E Seattle WA 98112
Owner: ADV··· 🔒
Plumbing Residential Single Family ADVANCED PLUMBING II, LLC
2026-08-13 General Construction
Source type: 22b. Natural Gas (by Contractor) – Residential - without Plan Review*
 3019 47TH AVE SW Seattle WA 98116
Owner: MIL··· 🔒
Natural Gas Residential residential BRITTON PLMB & MECHANICAL LLC
2026-08-13 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 4663 36TH AVE W Seattle WA 98199
Owner: Nic··· 🔒
Plumbing Residential Single Family BAZAIL PLUMBING LLC
2026-08-13 General Construction
Source type: Complex - Event 16+
 — Complex - Event 16+ HRG (HEAVY RESTAURANT GROUP)
2026-08-13 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 3503 SW 106TH ST Seattle WA 98146
Owner: SCH··· 🔒
Plumbing Residential Single Family SCHULTE PLUMBING LLC
2026-08-13 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 2623 3RD AVE N Seattle WA 98109
Owner: Ret··· 🔒
Plumbing Residential Single Family Simba Solutions CO LLC
2026-08-13 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 1905 E PINE ST Seattle WA 98122
Owner: Hel··· 🔒
Plumbing Residential Single Family NORTHWEST MECHANICAL
2026-08-13 Other
Source type: Building/Signage/Signs/NA
 23515 NE NOVELTY HILL RD Installation of new Channel letter sign on raceway to be mounted on the building… Nick Martin
2026-08-13 HVAC
Source type: Building/Mechanical/Residential/NA
 25909 NE 25TH ST 1 FURNACE; 1 HEAT PUMP furnace, heat pump Meranda Directo
2026-08-13 HVAC
Source type: Building/Mechanical/Residential/NA
 17233 164TH WAY SE 1 AIR CONDITIONER Katelynn Pettit
2026-08-13 HVAC
Source type: Building/Mechanical/Residential/NA
 21828 251ST AVE SE 1 AIR HANDLER; 1 HEAT PUMP heat pump Cory Hesseltine
2026-08-13 Plumbing
Source type: 02b. Plumbing (by Contractor) - Single Family & Townhouse - without Plan Review*
 216 31ST AVE E Seattle WA 98112
Owner: ADV··· 🔒
Plumbing Residential Single Family ADVANCED PLUMBING II, LLC
2026-08-13 Fire Protection
Source type: Fire/Special Events/Specific/NA
 6711 PERIMETER RD S Temporary assembly for a VP guest speaker to address the North Boeing Field prod… Martin Probst
2026-08-13 Interior Renovation
Source type: Building/Residential Building/Addition-Improvement
 13625 WEST LAKE KATHLEEN DR SE EXTENSION OF REAR COVERED DECK AND REMODEL OF EXISTING BATHROOMS. NO CHANGE IN B… shalev boaron
2026-08-13 HVAC
Source type: Building/Mechanical/Residential/NA
 14033 180TH AVE NE 1 AIR CONDITIONER Patty Rice
2026-08-13 Fire Protection
Source type: Fire/Fire Permit Systems/Sprinkler/Residential
 19225 SE 141ST ST NORTHWEST FIRE PROTECTION (NWFS) WILL PROVIDE (1) WET PIPE AUTOMATIC SPRINKLER S… fire protection, spri… NWFS Permits
2026-08-13 Fire Protection
Source type: Fire/Special Events/Specific/NA
 16325 NE MARYMOOR WAY Ticketed concert with a led drone light show, accompanied by a recorded musical … —
2026-08-13 Addition
Source type: Building/Residential Building/Addition-Improvement
 531 SW 97TH PL CONSTRUCT AN ATTACHED PORCH TO A SINGLE-FAMILY RESIDENCE Shukur Mukhtarov
2026-08-13 Fire Protection
Source type: Fire/Special Events/Specific/NA
 9655 16TH AVE SW Summer Family Block Party, vendors, beer gardens, and lawn games Event Set-up Se… —
2026-08-13 General Construction
Source type: Moderate Food Handling - Single Event Permit
 — Moderate - Single Sierras coffee stop
2026-08-13 General Construction
Source type: Complex - Event 04
 — Complex - Event 04 HEAVY RESTAURANT GROUP
2026-08-13 HVAC
Source type: Building/Mechanical/Residential/NA
 4244 S 290TH ST 1 HEAT PUMP heat pump Jason Bergstrom
2026-08-13 Electrical
Source type: Building/Electrical Comm Device/Antenna/NA
 28811 NE TOLT HILL RD Replace existing AT&T wireless equipment on American Tower owned monopole as per… replacement Ron Evenson
2026-08-13 Electrical
Source type: Building/Electrical Comm Device/Antenna/NA
 34829 46TH AVE S Remove 12 Antenna Replace with 6 like Antenna. Remove 12 TMAs Replace with 6 lik… replacement Andrew Sottero
2026-08-12 HVAC
Source type: Building/Mechanical/Residential/NA
 27126 SE GRAND RIDGE DR 2 FURNACE; 2 AIR CONDITIONER furnace Lucinda Honeycutt
📞 (•••) •••-••••
2026-08-12 HVAC
Source type: Building/Mechanical/Residential/NA
 2622 S 362ND PL 1 FURNACE furnace South West Plumbing
📞 (•••) •••-••••
2026-08-12 General Construction
Source type: Complex - Event 07
 — Complex - Event 07 DIY TEA LAB
📞 (•••) •••-••••
Page 107 of 139 ← Prev 1 2 … 106 107 108 138 139 Next →
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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