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

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
2026-03-09 General Construction
Source type: RIGHTOFWAY USE
9734 SE 40TH ST MATERIALS DELIVERY - NO LANE CLOSURE Homeowner permit
2026-03-09 Plumbing
Source type: SIDESEWER
9734 SE 40TH ST SIDESEWER DISCONNECT Homeowner permit
2026-03-09 Plumbing
Source type: SIDESEWER
9734 SE 40TH ST SIDESEWER RECONNECT Homeowner permit
2026-03-09 Plumbing
Source type: PLUMBING
7452 E MERCER WAY 1 SHOWER/TUB/TOILET/HOT WATER HEATER/2 SINKS standard Water heater FISCHER PLUMBING CO INC, THE
2026-03-09 Electrical
Source type: ELECTRICAL
4314 E MERCER WAY 2 HEAT PUMPS, 2 RECEPTACLE CIRCUIT WASHINGTON ENERGY SVCS CO LLC
2026-03-09 Electrical
Source type: ELECTRICAL
9734 SE 40TH ST TEMPORARY POWER Homeowner permit
2026-03-09 Demolition
Source type: DEMO
9734 SE 40TH ST DEMO SFR TO REBUILD Homeowner permit
2026-03-09 HVAC
Source type: MECHANICAL
9162 SE 54TH ST T-STAT WIRING, 1 HEAT PUMP, 1 FURNACE furnace, heat pump GREENWOOD HEATING &HOME SRVS
2026-03-08 Electrical
Source type: ELECTRICAL
7960 SE 70TH ST 1 EV Charging Station EV charger BT SOLUTIONS LLC
2026-03-07 Plumbing
Source type: SIDESEWER
9026 SE 61ST ST SIDESEWER BEACON PLUMBING &MECHNCAL INC
2026-03-07 HVAC
Source type: MECHANICAL
3731 79TH AVE SE 1 Heat Pump heat pump COZY SOUND
2026-03-06 HVAC
Source type: RIGHTOFWAY USE
4004 89TH AVE SE JOB# 109157488 - Replace Section of Gas Main replacement HVAC replacement INFRASOURCE SERVICES LLC
2026-03-06 Fire Protection
Source type: FIREPROTECTION
3424 76TH PL SE NFPA 13D Fire Sprinkler System sprinkler RED HAWK FIRE PROTECTION LLC
2026-03-06 HVAC
Source type: RIGHTOFWAY USE
4649 86TH AVE SE JOB# 109157486 - Replace Section of Gas Main replacement HVAC replacement INFRASOURCE SERVICES LLC
2026-03-06 Electrical
Source type: RIGHTOFWAY USE
3917 88TH AVE SE JOB# 101198725 - Upgrade Transformer POTELCO INC
2026-03-06 Electrical
Source type: RIGHTOFWAY USE
2419 72ND AVE SE JOB# 101195878 - Rplc Pole & Upgrade Transformer POTELCO INC
2026-03-06 HVAC
Source type: RIGHTOFWAY USE
9429 SE 52ND ST JOB# 101198321 - Handhole Replacement replacement HVAC replacement POTELCO INC
2026-03-06 Plumbing
Source type: SIDESEWER
4115 78TH AVE SE NEW SIDESEWER CONNECTION; SFR+ADU RKK CONSTRUCTION INC
2026-03-06 Electrical
Source type: ELECTRICAL
4115 78TH AVE SE TEMPORARY POWER SMART HOMES ELECTRIC INC
2026-03-06 Electrical
Source type: ELECTRICAL
4212 MERCERWOOD DR 1 SECURITY SYSTEM ADT LLC
2026-03-06 General Construction
Source type: RIGHTOFWAY USE
4115 78TH AVE SE MATERIALS DELIVERY - NO LANE CLOSURE RKK CONSTRUCTION INC
2026-03-06 Plumbing
Source type: SIDESEWER
9120 SE 50TH ST SIDESEWER FISCHER HTG &A/C INC
2026-03-06 Electrical
Source type: RIGHTOFWAY USE
8460 SE 71ST ST Conduit Installation to 8460 SE 71ST ST ADVANCED CONCEPTS LLC
2026-03-06 Fire Protection
Source type: FIREPROTECTION
2707 78TH AVE SE Reconnect Hood Supression System to Fire Alarm fire alarm CASCADIA ELECTRICAL SOLUTIONS LLC
2026-03-06 General Construction
Source type: RIGHTOFWAY USE
4140 W MERCER WAY JOB# 593269400 - Equipment Transfer to Other Pole POTELCO INC
2026-03-06 Plumbing
Source type: RIGHTOFWAY USE
4115 78TH AVE SE INSTALL SEWER,WATER, AND/OR STORM -NO LANE CLOSURE line work New installation RKK CONSTRUCTION INC
2026-03-06 Fire Protection
Source type: FIREPROTECTION
6024 SE 22ND ST Installation of Driveway Access Gate MAWER BROTHERS LLC
2026-03-06 Electrical
Source type: ELECTRICAL
6016 77TH AVE SE 1 EV Charging Station EV charger BT SOLUTIONS LLC
2026-03-06 HVAC
Source type: BUILDING
6022 94TH AVE SE Remove & replace decking & railings of existing decks replacement HVAC replacement CARLISLE CLASSIC HOMES, LLC
2026-03-05 Electrical
Source type: ELECTRICAL
2937 76TH AVE SE Breaker Panel and Circuit Replacement replacement NORTH LAKE ELECTRIC LLC
2026-03-05 Electrical
Source type: ELECTRICAL
7525 SE 24TH ST Job# 529666 - furnish and install (3) new section panelboard COCHRAN INC.
2026-03-05 HVAC
Source type: MECHANICAL
8015 SE 28TH ST Relocation of 2 Thermostats & 2 Supply Diffusers PACIFIC AIR CONTROL INC
2026-03-05 Fire Protection
Source type: FIREPROTECTION
6202 SE 22ND ST Fire Sprinkler System sprinkler NORTHWEST FIRE SYSTEMS LLC
2026-03-05 General Construction
Source type: FUEL TANK
8805 SE 39TH ST DECOMISSION OF 300 GAL UST FILCO CO INC
2026-03-05 Electrical
Source type: ELECTRICAL
7416 78TH AVE SE 6.16 kW DC/5.38 kW AC Solar Rooftop System solar BOB'S HEATING & AIR CONDITIONING LLC
2026-03-05 Electrical
Source type: ELECTRICAL
7418 78TH AVE SE 6.16 kW DC/5.38 kW AC Solar Rooftop System solar BOB'S HEATING & AIR CONDITIONING LLC
2026-03-05 Electrical
Source type: ELECTRICAL
5818 W MERCER WAY TEMPORARY POWER ARTOUSH CONSTRUCTION AND REMODELING LLC
2026-03-05 Electrical
Source type: ELECTRICAL
7414 78TH AVE SE 6.16 kW DC/5.38 kW AC Solar Rooftop System solar BOB'S HEATING & AIR CONDITIONING LLC
2026-03-05 Plumbing
Source type: SIDESEWER
5818 W MERCER WAY SIDESEWER CONNECTION ARTOUSH CONSTRUCTION AND REMODELING LLC
2026-03-05 Electrical
Source type: ELECTRICAL
9 BROOK BAY RD 1 Service Change, 1 Switch, 1 Generator NW POWER &AIR
2026-03-05 General Construction
Source type: TREE
7705 78TH AVE SE REMOVE 6 TREES - Rplc w/ 17 Trees —
2026-03-04 Electrical
Source type: ELECTRICAL
2280 78TH AVE SE 1 Service Panel Change Out service panel replacement Panel service GENE JOHNSN PLB HTG CL ELC LLC
2026-03-04 Plumbing
Source type: PLUMBING
4680 91ST AVE SE 1 WATER SUPPLY PIPING RUDY'S PLUMBING INC
2026-03-04 Electrical
Source type: ELECTRICAL
4719 86TH AVE SE 3 Receptacle - circuit OBOT ELECTRIC LLC
2026-03-04 Electrical
Source type: ELECTRICAL
8430 SE 72ND PL 3 Light Fixture - circuit, 1 Receptacle - circuit DICKSON ELECTRIC LLC
2026-03-04 HVAC
Source type: MECHANICAL
6016 77TH AVE SE 1 Furnace 100,000 BTU or Less 100,000 BTU furnace BETTER AIR NW HEATING/CLNG LLC
2026-03-04 Electrical
Source type: ELECTRICAL
1848 72ND AVE SE 1 Service Change NICK'S ELECTRIC SERVICE LLC
2026-03-04 Plumbing
Source type: PLUMBING
2500 81ST AVE SE Plumbing TI - Replace Shower FIxtures replacement —
2026-03-04 General Construction
Source type: BUILDING
7785 SUNSET HWY DEMISE EXISTING SUITE INTO TWO SUITES (118+120) —
2026-03-04 Demolition
Source type: BUILDING
2061 82ND AVE SE DEMO/REBUILD RETAINING WALL & STAIRS, REMOVE WATER FEATURES —
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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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