Investor Profile - WA

William Cowin

William Cowin is a real estate investor and operator based in Tri-Cities, WA. Public filings show activity across 76 properties held through 5 holding companies. Recent mortgage relationships include BCSCBN, 1ST SECURITY BANK OF WASHINGTON, and G A MARRIS.

Contact info available

William's Activity

As of June 2026, public records show approximately $575k in recorded mortgage exposure linked to this investor across at least 3 mortgage filings and 76 properties held through 5 holding companies. Activity appears concentrated in vacant and residential assets recorded between 2016 and 2026.

Primary Geography

Tri-Cities, WA

ZIP codes: 98950, 98926, 98848, and 98824

Most activity in VANTAGE, ELLENSBURG, QUINCY, and GEORGE.

Property Type Breakdown

Vacant75%
Residential21%
Agricultural2%
Other2%

Associated Entities (5)

SUN COUNTRY CONSTRUCTION LLC

WA · 1 property · 1 mortgage

active
Incorporated on 10/22/2021 in WAMailing Address: 21828 87TH AVE SE, SUITE 200, WOODINVILLE, 98072-8054, WA, UNITED STATES
KOEW LLC

WA · 1 property · 1 mortgage

active
Incorporated on 08/12/2020 in WAMailing Address: 21828 87TH AVE SE STE 200, WOODINVILLE, 98072-8054, WA, UNITED STATES

+3 more entities not shown

Mortgages (3)

Top Lenders

BCSCBN
BCSCBN

$575k · 1 loan

1ST SECURITY BANK OF WASHINGTON
1ST SECURITY BANK OF WASHINGTON

$0 · 0 loans

G A MARRIS
G A MARRIS

$0 · 0 loans

DateAmountStatusLenderBorrowerAddress
04/10/2024$575kOpenBCSCBNSUN COUNTRY CONSTRUCTION LLCXXXXX CHINOOK DR,
VANTAGE, WA 98950
04/06/2021$199kClosedG A MARRISKOEW LLC100 N GARNET WAY,
GEORGE, WA 98824

+1 more not shown

Owned Properties (76)

AddressDeeded ownerStatusConsideration
8818 CRESCENT BAR RD NW,
QUINCY, WA 98848
YVONNE HOLMESSold$21k
XXXXX CHINOOK DR,
VANTAGE, WA 98950
SUN COUNTRY CONSTRUCTION LLCOwns - 2.2 yrs$600k

+74 more not shown

FAQ

What type of real estate does this investor focus on?

Associated mortgages and deeds show activity in vacant, residential, and agricultural properties across Tri-Cities, WA.

What companies is William Cowin associated with?

William Cowin is associated with 5 entities based on extracted signatures from public records. Key entities include SUN COUNTRY CONSTRUCTION LLC, KOEW LLC, BCSCBN INC, 3 LABS LLC, and COWIN & HAGEN ENTERPRISES JR LLC.

How many properties are associated with this investor?

At least 76 properties are associated with William Cowin and the entities they control, based on signatures extracted from recorded documents connecting William Cowin to the entities.

Which lenders has this investor worked with?

Recent mortgage activity references BCSCBN, 1ST SECURITY BANK OF WASHINGTON, and G A MARRIS, indicating a mix of lending relationships.

How recent is their activity?

Records show activity from 2016 through 2026, with the most recent mortgage recorded in 2024.

How is associated activity determined?

Elementix uses AI to extract signatures from recorded documents. These signatures are used to determine the relationships between people and entities. This is a novel approach that goes beyond looking at corporate filings and skip-tracing.

The information displayed on this page is compiled from recorded real estate documents, business filings, and other lawfully available sources. Elementix summarizes and analyzes public record activity related to investment real estate and associated business entities. Any contact indicators shown (such as email domain references or partial phone digits) are provided solely as unverified signals and may be incomplete or outdated.

Elementix is not a consumer reporting agency, and this information does not constitute a consumer report. The data may not be used to make decisions about an individual's eligibility for personal credit, consumer housing, employment, insurance, or any other purpose governed by the Fair Credit Reporting Act.

Elementix may suppress certain contact indicators where legally required or where appropriate for safety or privacy reasons. Requests for removal, suppression, or correction of information must be submitted to [email protected]. Elementix reviews such requests only where required by applicable law. General objections or unsupported demands do not create a removal obligation.