Mercer Island 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.

1,626 indexed permits · Mercer Island, Washington.

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Mercer Island building permits — key stats
Newest permit 2026-09-17

PermitGrab tracks 1,626 building permits in Mercer Island, WA as of 2026-09-17.

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 Mercer Island permits by trade: solar · roofing · HVAC · electrical · fire protection · new construction.

Free weekly permit summary for Mercer Island

One email a week with the newest Mercer Island 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.

1,626
Indexed Permits
Contractor count unavailable
Property Owners · count unavailable
2026-09-21
Last Updated
Updated recently · 2026-09-17
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Published permit & code records

Permit data through 2026-09-17

1,626 permits sorted by date

⇄ Swipe or scroll to see address & contractor

Date Type Value Address Details Contractor / Status Save
2026-01-27 Fire Protection 3325 84TH AVE SE NFPA 13D Fire Sprinkler System sprinkler M FIRE PROTECTION SYSTEM LLC
2026-01-27 General Construction 8015 SE 28TH ST alterations to demise Suite 200 into 2 suites-Suite 200 & 20 Davis Schueller, Inc.
2026-01-27 Fire Protection 9232 SE 46TH ST Residential Fire Alarm System fire alarm AUDIO PLUS LLC
2026-01-27 General Construction 4417 FOREST AVE SE REMOVE 3 TREES
2026-01-26 General Construction 8700 N MERCER WAY REPAIR DOCK
2026-01-26 General Construction 3805 W MERCER WAY 300 sf ADDITION TO SFR 300 roof sf New installation
2026-01-26 Structural 3637 81ST AVE SE Foundation Repair-Install 5 piles to stabilize home R&R FOUNDATION SPECIALIST
2026-01-22 General Construction 2707 70TH AVE SE MATERIALS DELIVERY - NO LANE CLOSURE
2026-01-22 Plumbing 2707 70TH AVE SE ADU CONNECTION
2026-01-22 Plumbing 2707 70TH AVE SE INSTALL SEWER,WATER, AND/OR STORM -NO LANE line work New installation
2026-01-22 HVAC/Mech 3246 72ND PL SE 1" METER DROP IN EX. SERVICE-SUPPLY LINE TO HOUSE TBD*
2026-01-21 Plumbing VARIOUS 2026 CCTV Sewer Inspections for PSE line work HYDROMAX USA LLC
2026-01-21 HVAC/Mech 5419 96TH AVE SE 1" METER AND SERVICE BRANCH, SUPPLY LINE METER TO HOUSE TBD* SBI CONSTSTRUCTION
2026-01-21 HVAC/Mech 6110 84TH AVE SE REMOVE EXISTING DOOR/EXPAND & REPLACE replacement HVAC replacement Signature Window & Door
2026-01-21 Electrical 3309 97TH AVE SE Pump Station 11 Electrical Work VALLEY ELECTRIC CO OF MT VERNON INC
2026-01-21 Structural 7265 N MERCER WAY Rock Retaining Wall Installation. QUERCUS LANDSCAPES INC
2026-01-21 Plumbing 2800 60TH AVE SE For the new storm pipe connecting to city CB only TOTAL QUALITY EXPRESS LLS LLC
2026-01-20 HVAC/Mech 4115 78TH AVE SE NSFR ON VACANT LOT
2026-01-20 General Construction 7020 N MERCER WAY Remove 35 Trees - Rplce w/ 57 Trees A PLUS TREE
2026-01-20 General Construction 6024 SE 22ND ST COMPLETE INTERIOR FINISH WORK ON EXPIRED PERMIT 2209-088 MAWER BROTHERS LLC
2026-01-16 General Construction 8480 85TH AVE SE PERMIT TO COMPLETE 2202-257 SCHULTZ MILLER INC
2026-01-16 General Construction 4802 E MERCER WAY CE26-0018 - INTERIOR REMODEL LNL BUILDS LLC
2026-01-14 General Construction 4124 83RD AVE SE INSTALL PATIO & FREE STANDING PATIO COVER PEOPLE COME FIRST CONSTRUCTION GROUP
2026-01-13 Fire Protection 7808 SE 28TH ST Commercial Fire Sprinkler TI sprinkler PATRIOT FIRE PROTECTION INC
2026-01-13 Fire Protection 2802 61ST AVE SE Installation of AES Radio GUARDIAN SECURITY SYSTEMS
2026-01-12 Structural 9350 MERCERWOOD DR INSTALL 14 PILES TO STABILIZE FOUNDATION
2026-01-08 General Construction 4236 W MERCER WAY Remove 1 Hazard Tree - Rplc w/ 2 Trees BEAR CREEK TREE WORK
2026-01-08 Structural 8220 SE 59TH ST UNDERPINNING & STABILIZATION OF FOUNDATION GROUNDWORKS WASHINGTON LLC
2026-01-06 General Construction 8416 SE 45TH ST Onsite detention system LNL BUILDS LLC
2026-01-06 HVAC/Mech 4332 86TH AVE SE DEMO/REBUILD 4718 SQ FT SFR W/697 SF ATTACHED GARAGE 4,718 roof sf EB#5 LLC, None
2026-01-06 General Construction 2707 70TH AVE SE Connecting to city system in ditch
2026-01-05 HVAC/Mech 3246 72ND PL SE DEMO/REBUILD 6193 SQ FT SFR W/648 ATTACHED GARAGE 6,193 roof sf
2025-12-31 General Construction 7254 N MERCER WAY LOT LINE REVISION
2025-12-31 General Construction 2424 74TH AVE SE CONSTUCT DUPLEX
2025-12-31 General Construction 7905 W MERCER WAY INSTALL BOAT LIFT ×2
2025-12-29 Fire Protection 2411 60TH AVE SE NFPA 13D Fire Sprinkler System sprinkler RAIN CITY FIRE PROTECTION LLC
2025-12-24 HVAC/Mech 2800 60TH AVE SE 1" METER AND SERVICE BRANCH, SUPPLY LINE METER TO HOUSE TBD* TOTAL QUALITY EXPRESS LLS LLC
2025-12-24 General Construction 4860 E MERCER WAY REMOVE 5 TREES - Rplc w/ 11 Trees BALLARD TREE SERVICE
2025-12-24 General Construction 6230 89TH AVE SE Remove 2 Hazard Trees - Rplc w/ 5 Trees TOBIN, TIANNA & CHARLES
2025-12-23 HVAC/Mech 8600 SE 75TH PL REPLACE DECK IN KIND. 13X24' TTL 312 SQ FT replacement HVAC replacement ARCHADECK OF SEATTLE EASTSIDE
2025-12-23 Structural 4609 FOREST AVE SE Underpinning existing foundation & additional stabilization GROUNDWORKS WASHINGTON LLC
2025-12-17 Structural 7014 N MERCER WAY Voluntary seismic retrofit to basement & crawlspace SOUND SEISMIC LLC
2025-12-16 General Construction 7671 W MERCER WAY Remove 3 Trees - Rplc w/ 6 Trees BLOOMA TREE EXPERTS
2025-12-16 Roofing 2256 71ST AVE SE NEW UNCOVERED ROOFTOP DECK & STAIR New installation New roof PRECISION HOME SERVICES INC…
2025-12-15 HVAC/Mech 5704 91ST AVE SE RETRO-DECK HAS BEEN REMOVED & REPLACED Remodel Pros LLC - Matthew…
2025-12-11 General Construction 3801 E MERCER WAY REZONE FROM R TO CO
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Permit Types in Mercer Island
Construction Activity in Mercer Island

New building permits in Mercer Island, 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 Mercer Island Building Permits

Mercer Island, Washington processes building permits covering residential construction, commercial buildouts, renovations, and specialty trade work. PermitGrab tracks 1626+ Mercer Island building permits — newest permit date: 2026-09-18 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 Mercer Island 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: Mercer Island WA building permits (MyBuildingPermit.com regional portal).

Who appears in Mercer Island permit records?

PermitGrab indexes 1,626 building permits in Mercer Island. New records appear as they are available from the source.

How fresh is Mercer Island permit data?

The most recent permit indexed for Mercer Island is dated 2026-09-17. Newest permit date: 2026-09-18. 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 Mercer Island permit records?

Mercer Island permit activity covers 1,626 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 Mercer Island building permits

Search recent Mercer Island, WA building permits by address, and permit type in the table above — pulled from the Mercer Island 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 Mercer Island Permit Pulse.

Nearby Washington Cities — explore building permits in other Washington cities

Monitor Mercer Island 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 Mercer Island Building Permits

How many building permits does PermitGrab track in Mercer Island?

PermitGrab currently tracks 1626 building permits in Mercer Island, 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 Mercer Island 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 Mercer Island?

Contractors can research Mercer Island 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 Mercer Island — 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?

Mercer Island 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 Mercer Island provide project context for solar-market research. Filter by the current project signal and verify ownership separately.
Insurance agents
Mercer Island 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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Mercer Island permits by trade

Mercer Island addition permits Mercer Island concrete & masonry permits Mercer Island demolition permits Mercer Island electrical permits Mercer Island fire protection permits Mercer Island general construction permits Mercer Island hvac permits Mercer Island interior renovation permits Mercer Island landscaping permits Mercer Island new construction permits Mercer Island plumbing permits Mercer Island roofing permits
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