Mercer Island Building Permits & Project Research

1,986 indexed permits · 306 contractor names in the last 90 days · Mercer Island, Washington.

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Public-record project research, not a shared-lead marketplace. Use the permit, source date, and available fields to research the builder, project, or adjacent work before outreach. Cancel anytime in one click — no retention call.

Mercer Island building permits — key stats
Active contractors 306
Newest permit 2026-11-04

PermitGrab tracks 1,986 building permits in Mercer Island, WA as of 2026-11-04, including 306 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:

PermitGrab Pro is a $149/mo subscription for current municipal permit, property, and code-violation records. In this market, that includes contractor records from the official municipal feed. 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 — 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.

1,986
Indexed Permits
306
Contractor names (90 days)
2026-11-05
Last Updated
Source date: 2026-11-04
📊 View Mercer Island 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 2026-11-04
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1,986 permits sorted by date

Project value is blank on every record displayed here, so the Value column is omitted.

⇄ Swipe or scroll to see address & contractor

Date Type Address Details Contractor / Status Save
2025-10-09 HVAC
Source type: MECHANICAL
3660 E MERCER WAY Mechanical for New School/Office Building New installation HVAC installation RESOLVE GENERAL CONSTRUCTION, LLC
2025-10-09 New Construction
Source type: ADU
4649 FOREST AVE SE ADD 635 SF TO DADU ON SHORELINE 635 sf —
2025-10-08 General Construction
Source type: RIGHTOFWAY USE
2690 76TH AVE SE ROW FOR CAFE SEATING —
2025-10-08 Interior Renovation
Source type: BUILDING
4170 BOULEVARD PL INTERIOR REMODEL & ADD CONCRETE SLAB IN SUNROOM METIS CONSTRUCTION
2025-10-07 HVAC
Source type: WATERSERVICE
6511 82ND AVE SE 1" METER+SERVICE BRANCH, 1.25" SUPPLY LINE METER TO HOUSE CARLISLE CLASSIC HOMES, LLC
2025-10-07 General Construction
Source type: SITE DEVELOPMENT
3660 E MERCER WAY All utility work assocated with the building permit 2506-131 RESOLVE GENERAL CONSTRUCTION, LLC
2025-10-07 HVAC
Source type: SHORELINE
4713 FOREST AVE SE REPAIR PIER, INSTALL BOATLIFT, PLATFORM LIFT & ACCESS STAIRS New installation HVAC repair ×2 —
2025-09-30 Plumbing
Source type: STORMWATER
5320 BUTTERWORTH RD Drainage connecting to the existing system to lake MacPherson Const & Design
2025-09-25 Interior Renovation
Source type: BUILDING
5704 91ST AVE SE MAIN FLOOR KITCHEN AND LAUNDRY RM REMODEL —
2025-09-25 HVAC
Source type: MECHANICAL
7650 SE 27TH ST REPLACE EXISTING HEAT PUMP SYSTEM, IN KIND heat pump replacement HVAC replacement ALLRED HEATING COOLING ELECTRIC
2025-09-24 Demolition
Source type: BUILDING
6735 83RD AVE SE DEMO/REBUILD 2 DECKS WITHIN CRITICAL AREA 3 BROTHERS DECKING
2025-09-18 Landscaping & Exterior
Source type: GRADING
3655 73RD AVE SE Remove Retaining Walls & Restore/Stabilize Site REDLINE SERVICES GROUP
📞 (•••) •••-••••
2025-09-17 General Construction
Source type: TREE
4442 88TH AVE SE REMOVE 1 HAZARD TREE - Rplc w/ 6 Trees ALEX TREE SERVICE LLC
2025-09-12 Structural
Source type: CRITICAL AREAS
7445 W MERCER WAY WOOD RETAINING WALL —
2025-09-10 General Construction
Source type: BUILDING
2048 84TH AVE SE LUTHER BURBANK DOCKS + WATERFRONT IMPROVEMENTS —
2025-09-08 Demolition
Source type: SEPA
3200 78TH AVE SE
Owner: MON··· 🔒
DEMO/RENO TO INTERIOR & EXTERIOR + ADDITION TO CHURCH —
2025-09-08 HVAC
Source type: WATERSERVICE
4115 78TH AVE SE 1" METER AND SERVICE BRANCH, SUPPLY LINE METER TO HOUSE TBD* RKK CONSTRUCTION INC
2025-09-05 Electrical
Source type: ELECTRICAL
4006 E MERCER WAY TEMP POWER MERCER WISE CONSTRUCTION LLC
2025-09-05 Demolition
Source type: DEMO
4006 E MERCER WAY DEMO SFR TO REBUILD MERCER WISE CONSTRUCTION LLC
2025-09-05 Plumbing
Source type: SIDESEWER
4006 E MERCER WAY SIDESEWER RECONNECT MERCER WISE CONSTRUCTION LLC
2025-09-05 Plumbing
Source type: SIDESEWER
4006 E MERCER WAY SIDESEWER DISCONNECT MERCER WISE CONSTRUCTION LLC
2025-09-04 General Construction
Source type: RIGHTOFWAY USE
4006 E MERCER WAY MATERIALS DELIVERY - NO LANE CLOSURE MERCER WISE CONSTRUCTION LLC
2025-09-04 Plumbing
Source type: RIGHTOFWAY USE
4006 E MERCER WAY INSTALL SEWER,WATER, AND/OR STORM -NO LANE CLOSURE line work New installation MERCER WISE CONSTRUCTION LLC
2025-09-03 Interior Renovation
Source type: BUILDING
3818 83RD AVE SE ADD 490sf TWO STORY ADD & INT REMODEL CASCADIA DESIGN-BUILD NW LLC
2025-09-03 Roofing
Source type: BUILDING
6759 82ND AVE SE new 135sf mudroom add under existing roof, rebuild/expand de 135 roof sf New installation A2 BUILDS LLC
2025-09-03 General Construction
Source type: TREE
6511 80TH AVE SE REMOVE ROW TREE - Rplc w/ 1 Tree —
2025-09-02 Roofing
Source type: BUILDING
6511 82ND AVE SE INTERIOR REMODEL, DEMO/REBUILD DECK & STAIRS, NEW ROOF New installation New roof CARLISLE CLASSIC HOMES, LLC
2025-08-28 New Construction
Source type: BUILDING
6905 96TH AVE SE PHASE 1 - NEW 912 SQ FT ADU 912 sf MVP CONSTRUCTION LLC
2025-08-27 General Construction
Source type: BUILDING
9655 SE 36TH ST SWAPPING/REMOVING ANTENNAS, RADIOS, TRUNKS & SQUIDS MASTEC NETWORK SOLUTIONS
2025-08-26 HVAC
Source type: SEPA
9150 FORTUNA DR COVENANT SHORES COMMUNITY SERVICES BUILDING —
2025-08-26 HVAC
Source type: WATERSERVICE
8416 SE 45TH ST 1" METER AND SERVICE BRANCH, SUPPLY LINE METER TO HOUSE TBD* LNL BUILDS LLC
2025-08-25 General Construction
Source type: TREE
4728 86TH AVE SE REMOVE 2 TREES - Rplc w/ 3 Trees Homeowner permit
2025-08-21 Interior Renovation
Source type: BUILDING
5321 LANSDOWNE LN INTERIOR REMODEL OF SFR + NEW SKYLIGHTS MRJ CONSTRUCTION LLC
2025-08-18 HVAC
Source type: WATERSERVICE
8203 AVALON DR 1" METER AND SERVICE BRANCH, SUPPLY LINE METER TO HOUSE TBD* ATERA HOMES LLC
2025-08-15 Interior Renovation
Source type: TREE
4114 78TH AVE SE TREE TRIMMING - Rplc w/ 6 Trees The Climber Tree Service
📞 (•••) •••-••••
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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 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 Mercer Island Building Permits

Mercer Island, Washington processes building permits covering residential construction, commercial buildouts, renovations, and specialty trade work. PermitGrab tracks 1,986+ Mercer Island building permits — newest permit date: 2026-11-04 from official city sources.

Building permits in Mercer Island 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 Mercer Island Permit Data

HVAC contractors, electricians, plumbers, and roofers can use Mercer Island 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: Mercer Island WA building permits (MyBuildingPermit.com regional portal).

Who appears in Mercer Island permit records?

PermitGrab indexes 1,986 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 2026-11-04. Newest permit date: 2026-11-04. 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 1,986 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 Mercer Island research

Start with the published project record.

🕵️

The project-team lookup

Search a business name to review its recorded permit activity in Mercer Island 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 Mercer Island project activity — Pro $149/mo

How to look up Mercer Island building permits

Search recent Mercer Island, WA building permits by address, contractor, 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 and the most active contractors, see the Mercer Island Permit Pulse.

Nearby Washington Cities — explore building permits in other Washington cities

Research Mercer Island 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 Mercer Island Building Permits

How many building permits does PermitGrab track in Mercer Island?

PermitGrab currently tracks 1,986 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 find leads in Mercer Island 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 Mercer Island — 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?

Mercer Island permit data, by use case

Same data, different angle. Pick the playbook that matches what you sell.

Contractors & subs
Recent Mercer Island 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 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, with contractor details where the record publishes them.
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