Coastline Custom Home LLC

General · Mercer Island, WA · License #COASTCH747BH

Subser ConfidenceListedActive WA license

Coastline Custom Home LLC is one of 226 General contractors registered in Mercer Island, registered with WA L&I since 2026. Current filings: $30,000 surety bond (continuous) and $1,000,000 liability coverage through Jan 6, 2027. Principals on record since 2026.

How confident can you be in Coastline Custom Home LLC?

Are they licensed, bonded, and insured?

Active license, $30,000 bond and $1,000,000 liability on file — checked against WA L&I records, updated daily.

Source:License facts on this pageVerify at WA L&I

Are they who they say they are?

Not yet verified — Coastline Custom Home LLC hasn't claimed this listing. Own this business? Claim it free.

Do other pros stand behind them?

No endorsements yet from other licensed contractors in Mercer Island.

Do they have jobs on record?

Not yet measured — Coastline Custom Home LLC hasn't run jobs through Subser. Performance data comes from real jobs, not reviews.

Subser doesn't do star ratings or reviews — just verified records.

License facts

License type
CONSTRUCTION CONTRACTOR
Effective date
Jan 8, 2026
Expiration date
Jan 8, 2028
UBI
606004616
Business type
Limited Liability Company
Phone
(206) 557-0772
Location
Mercer Island, WA 98040

Source: WA L&I contractor registration — checked Aug 18, 2026. Applies to every row above.

Registration is current through Jan 2028.

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Bond & insurance on file

Bond firmAmountEffectiveExpiration
Platte River Ins Co$30,000Dec 11, 2025Continuous — until canceled
Insurance companyAmountAgencyEffectiveExpiration
Kinsale Insurance Company$1,000,000Jan 6, 2026Jan 6, 2027
What the bond and insurance requirements mean for homeowners

A $30,000 surety bond, filed with the Department of Labor & Industries, is a condition of registration for every general contractor in Washington. This contractor's current filing shows a $30,000 bond.

The bond is a limited fund a homeowner (or subcontractor or supplier) can make a claim against, through the courts, if a registered contractor fails to meet its obligations on a job. Contractors must also keep general liability insurance on file — at least $50,000 in property damage and $200,000 in public liability coverage, or a $250,000 combined single limit — which covers damage the contractor causes, not workmanship disputes. The rows above are the bond and insurance filings L&I publishes for this registration; whether a specific filing applies to a specific project depends on its dates and terms.

Principals

NameStart date
Mingfang LuJan 8, 2026
Yan XuJan 8, 2026
What is a General contractor licensed to do in Washington?

A general contractor in Washington is registered with the Department of Labor & Industries to perform or oversee work in multiple building trades. General contractors can take on whole projects — remodels, additions, new construction — and can hire specialty subcontractors for individual trades. Washington requires a $30,000 surety bond and general liability insurance for this registration. Washington currently lists 226 General contractors registered in Mercer Island.

Looking for reviews of Coastline Custom Home LLC?

Subser doesn't have reviews or star ratings. This page shows Coastline Custom Home LLC's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.

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Built from Washington State L&I public records, updated Aug 18, 2026. Subser doesn't do star ratings or reviews — just verified records.