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You're set to Coeur d'Alene. Andr Key Builder holds a Washington registration only — an Idaho job needs an Idaho-registered crew.

General Contractor
AK

Andr Key Builder.

WA L&I registrationEst. 2004

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Credentials & honors

Andr Key Builder has done subcontract work on public projects for Enduris Washington, the Port of Benton and Chelan County Public Utility District No. 1, filings that run from 2010 to 2015. The business is a Spokane general contractor, registered with Washington L&I, working within about 25 miles of the city. It's a small operation where the owner does the work alongside a crew the state puts at one to three people.

Those public-works filings are the clearest picture of the work. All three came in as a subcontractor rather than as the prime, for a public-entity risk pool, a port district in the Tri-Cities and a central Washington utility. That means prevailing-wage paperwork and public-agency rules are familiar ground. The state lists Andrey Kostenko as a principal since 2004, the same year the business was established. Work comes mostly through referrals and repeat customers, not advertising, and the record points to service and repair work more than new-house building. The fit is general contracting on a modest scale, handled directly by the person doing the job, in Spokane, Spokane Valley, Liberty Lake, Mead, Cheney or Airway Heights. A homeowner planning a new custom home from the ground up would likely want a builder whose recent permits show that kind of project. Anyone who'd rather book and track a job online should know this is a phone-and-conversation kind of contractor. Before any general contracting job starts, get the scope written down room by room, including what's being removed and what stays. Ask who hauls away debris and how the site is left each day, which matters in an occupied house through a Spokane winter. Agree on how change orders get priced and approved before the work changes, not after. Ask what workmanship warranty is offered, how long it runs, and whether it's in writing.

WA L&I registration verified October 1, 2026 · see the state record

WA L&I registration
Registration number
ANDRKKB966K6
Registration checked
October 1, 2026
Registered since
2004
Expires
May 2027
Contractor bond
$30,000 · Lexon Ins Co
Liability insurance
$1,000,000 · Sierra Specialty Insurance Com
Insurance through
September 2027
Check it on the state record
The record

The details on Andr Key Builder

WA L&I registration
ANDRKKB966K6
Registration checked
October 1, 2026
Registered since
2004
Expires
May 2027
Contractor bond
$30,000 · Lexon Ins Co
Liability insurance
$1,000,000 · Sierra Specialty Insurance Com
Insurance through
September 2027
Established
2004
Primary trade
General Contractor
L&I specialty
GENERAL
Registered principal
Andrey Kostenko V · since 2004
Based in
Spokane

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Before you call

Questions worth asking Andr Key Builder

Is Andr Key Builder a registered contractor?

The number you want is ANDRKKB966K6 — Andr Key Builder's Washington State L&I contractor registration, expiring May 2027. Last checked October 1, 2026. Washington's contractor lookup is free and open if you want to confirm it today. L&I also lists a $30,000 contractor bond (Lexon Ins Co) and $1,000,000 of liability insurance with Sierra Specialty Insurance Com through September 2027. Ask for proof of bond and current insurance before work starts.

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