Investor Profile - WA

Jeffrey Mason

Jeffrey Mason is a real estate investor and operator based in Seattle-Tacoma, WA. Public filings show activity across 3 properties held through 2 holding companies.

Contact info available

Jeffrey's Activity

As of June 2026, public records show approximately $0 in recorded mortgage exposure linked to this investor across at least 0 mortgage filings and 3 properties held through 2 holding companies. Activity appears concentrated in vacant and commercial assets recorded between 2021 and 2025.

Primary Geography

Seattle-Tacoma, WA

ZIP codes: 98223, 98284, and 99212

Most activity in SPOKANE VALLEY, SEDRO WOOLLEY, and ARLINGTON.

Property Type Breakdown

Vacant67%
Commercial33%

Associated Entities (2)

MASONCO LLC

WA · 0 properties · 0 mortgages

inactive
Incorporated on 01/01/2007 in WAMailing Address: 3110 W MONROE RD, SPOKANE, WA, 99208, United States
ONYX INVESTMENTS LLC

WA · 59 properties · 0 mortgages

active
Incorporated on 12/30/2015 in WAMailing Address: 16825 45 ROAD, ARLINGTON, 98223, WA, UNITED STATES

Mortgages (0)

DateAmountStatusLenderBorrowerAddress

Owned Properties (3)

AddressDeeded ownerStatusConsideration
16825 45TH RD,
ARLINGTON, WA 98223
ONYX INVESTMENTS LLCOwns - 4.4 yrs$313
7606 VALERIA PL,
SEDRO WOOLLEY, WA 98284
ONYX INVESTMENTS LLCSold$0

+1 more not shown

FAQ

What type of real estate does this investor focus on?

Associated mortgages and deeds show activity in vacant and commercial properties across Seattle-Tacoma, WA.

What companies is Jeffrey Mason associated with?

Jeffrey Mason is associated with 2 entities based on extracted signatures from public records. Key entities include MASONCO LLC and ONYX INVESTMENTS LLC.

How many properties are associated with this investor?

At least 3 properties are associated with Jeffrey Mason and the entities they control, based on signatures extracted from recorded documents connecting Jeffrey Mason to the entities.

Which lenders has this investor worked with?

Recent mortgage activity references , indicating a mix of lending relationships.

How recent is their activity?

Records show activity from 2021 through 2025, with the most recent mortgage recorded in 1970.

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.