Washington L&I Data · Updated Oct 30, 2026Free and Independent · Not a Government Site

General contractor · Mercer Island, WA

Coastline Custom Home LLC

Active  Washington registration COASTCH747BH · per L&I records

LicensedBondedInsured

Is Coastline Custom Home LLC Licensed?

Washington L&I records list Coastline Custom Home LLC with registration number COASTCH747BH and status ACTIVE, valid until Jan 8, 2028. The business address on file is in Mercer Island, WA 98040.

License Details

License #
COASTCH747BH
Status
ACTIVE
License type
Construction Contractor
Specialty
General
First effective
Jan 8, 2026
Expires
Jan 8, 2028
Business type
Limited Liability Company
UBI (state business ID)
606004616
City
Mercer Island, WA 98040

Bond and Insurance on File

Surety bond
$30,000 · Platte River Ins Co
Effective Dec 11, 2025 · Until Canceled
Liability insurance
$1,000,000 · Kinsale Insurance Company
Expires Jan 6, 2027

What Active Status Means

The registration is current: L&I has a bond and liability insurance on file and the term has not ended. ACTIVE is necessary but not sufficient, so also check the expiry date, the bond and the insurance below.

Can this business work under this registration? Can work while it stays active.

The registration has 433 days left before it expires on Jan 8, 2028. Check that date against your project timeline.

All status codes are explained in Washington Contractor License Statuses Explained.

How This Record Compares in Mercer Island

Coastline Custom Home LLC has held registration COASTCH747BH for less than a year. The median for the 87 active general contractors with a Mercer Island address is 5.7 years, and 26 of them have held their registration for 10 years or more, so this registration is newer than most in Mercer Island. 7 of them registered in the last 12 months.

100% of these Mercer Island records have a surety bond on file and 100% have liability insurance on file. The median insurance amount on file is $1,000,000; this business lists $1,000,000, which is equal to that median. Insurance amounts are what the insurer reported to L&I; they are not a rating of the business.

Record Timeline

  • Dec 11, 2025: $30,000 surety bond with Platte River Ins Co took effect.
  • Jan 8, 2026: Current registration COASTCH747BH took effect.
  • Oct 30, 2026: Our copy of the L&I record was taken.
  • Jan 6, 2027: Kinsale Insurance Company liability policy on file expires.
  • Jan 8, 2028: Registration expires unless renewed.

Checks for General Contractors

How to Verify This Contractor

  1. Use the Confirm on L&I Verify button and search registration COASTCH747BH or UBI 606004616. The status there is the official one.
  2. Check that the name on your bid or contract matches Coastline Custom Home LLC exactly (a limited liability company).
  3. On L&I Verify, look for bond claims, lawsuits and any newer registration.
  4. Ask for a certificate of insurance sent directly by the insurer, and compare it with the Kinsale Insurance Company policy on file.

A full walkthrough is in How to Check a Contractor License in Washington.

Record data as of , from the Washington L&I contractor file.

Other General Contractors in Mercer Island

Active general contractor registrations with a Mercer Island address in the same L&I file. Listing here is not an endorsement.

Accuracy notice. Data from Washington L&I open data (public domain, PDDL), not affiliated with any government. Records change; confirm on the official L&I Verify tool before hiring. Search other businesses with the Washington contractor license lookup.

Is This Your Business?

Claim this free listing to add a description, photos and a website link, or join the featured waitlist.

Claim Your Listing or Get Featured on Verified Licensed

Something wrong or want this profile removed? Use the correction or removal request form.