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North America · updated quarterly

List of the 30+ Largest Family Offices in Washington State

Every qualifying office in Washington State, verified and ranked by size: named decision-makers with direct emails, phone numbers, AUM bands and investment focus.

39
Verified offices
307
Named contacts
8
Sectors covered
Last updated
Single-seat license·Every refresh for the next 12 months included·GDPR Compliant
Used by
VC & growth fundsPrivate equity firmsWealth managersInvestment banksService providers
What you'll receive

A look at 9 of the 39 offices

Family office
HQ
Type
Focus
AUM
Status
Cascade Asset Management
Kirkland, United States
SFO
Technology · Energy · Hospitality Leisure
>5B
Verified
Bezos Expeditions
Mercer Island, United States
SFO
Technology · Healthcare · Financial Services
>5B
Verified
Keeler Investments Group
Bellevue, United States
SFO
Technology · Healthcare
>5B
Verified
Laird Norton Company
Seattle, United States
SFO
Real Estate · Consumer · Financial Services
>5B
Verified
East Seattle Partners
Mercer Island, United States
SFO
Healthcare · Technology · Real Estate
1B-5B
Verified
Parcion Private Wealth
Bellevue, United States
MFO
Technology
1B-5B
Verified
Avantia
Seattle, United States
MFO
Education
1B-5B
Verified
Onelin Capital Corporation
Seattle, United States
SFO
Technology · Financial Services · Real Estate
1B-5B
Verified
East Seattle Foundation
Mercer Island, United States
Family Foundation
Education · Healthcare
500M-1B
Verified
[ + 30 more offices ]
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Locked

Contact-level fields (direct email, phone, LinkedIn) are included in the full dataset.

Featured offices

A few of the offices in the directory

Cascade Asset Management

Kirkland · SFO · >5B

Cascade Asset Management is a single family office headquartered in Kirkland, Washington. The firm deploys capital across private equity, venture capital, real estate, public equities, and other alternative assets, targeting sectors including technology, energy, and healthcare. The family's wealth originates from the technology sector.

In the full dataset

Bezos Expeditions

Mercer Island · SFO · >5B

Bezos Expeditions is a single family office based in Mercer Island, Washington, managing the personal investments of Amazon founder Jeff Bezos. The firm makes direct venture capital and private equity investments, targeting companies in the technology, healthcare, financial services, and media/telecom sectors.

In the full dataset

Keeler Investments Group

Bellevue · SFO · >5B

Keeler Investments Group is a single family office based in Bellevue, Washington, founded in 2007. The firm invests across real estate, real assets, private equity, and venture capital, with a focus on technology and healthcare sectors. It primarily makes direct investments, including early-stage funding for startups in the Pacific Northwest and San Francisco.

In the full dataset

Laird Norton Company

Seattle · SFO · >5B

Laird Norton Company is a single family office based in Seattle, Washington, established in 1855. The firm invests across real estate, hedge funds, private equity, and fund of funds, with a focus on the real estate, consumer, and financial services sectors. The family's wealth originates from a diversified holding company that has been managed through seven generations.

In the full dataset

East Seattle Partners

Mercer Island · SFO · 1B-5B

East Seattle Partners is a single family office based in Mercer Island, Washington, founded in 2014. Managing assets between $1 billion and $5 billion, it invests directly in real estate, private equity, and venture capital, targeting healthcare, technology, and real estate sectors. The firm oversees the wealth of Alan Frazier, derived from his career in healthcare private equity.

In the full dataset

Parcion Private Wealth

Bellevue · MFO · 1B-5B

Parcion Private Wealth is a multi-family office headquartered in Bellevue, Washington, founded in 2019. It invests in fund of funds, private equity, and venture capital, concentrating on software and technology sectors, and oversees assets between $1 billion and $5 billion. The firm serves families whose wealth stems from entrepreneurship and business ownership.

In the full dataset
The landscape

What this list covers

This list contains all 39 family offices in Washington State from our verified dataset, ranked from largest to smallest and carrying 307 named decision-maker contacts. It spans both structures: 12 multi-family and 14 single-family offices. Coverage is led by Seattle (51% of the list), followed by Bellevue and Mercer Island.

Sector exposure is broadest in Healthcare, Technology and Real Estate. The largest offices by assets include Cascade Asset Management, Bezos Expeditions and Keeler Investments Group.

97% of the offices on this list carry a direct channel: a firm email, phone or contact form, or a named decision-maker's email or LinkedIn. Field-level coverage is shown transparently on this page, and the dataset refreshes quarterly. A purchase includes 12 months of updates.

Who buys this

Built for the teams reaching family-office capital

Fund GPs

Raising a fund

Identify the offices that allocate to your asset class and stage, without burning weeks of associate time on LinkedIn.

Decision-makers with titles, filtered by AUM band and office type
Wealth managers

Mapping the competitor set

See which offices are single- vs multi-family, their AUM band and their sector focus. Stop guessing who does what.

Every office profiled by location, AUM band and structure
Service providers

Selling to family offices

Reach named people at the office, with titles and LinkedIn where available, instead of a generic firm inbox.

Named decision-makers with titles and LinkedIn where verified
Coverage

Where the 39 offices sit: by hub and sector

By location
Seattle
20 offices
51%
Bellevue
5 offices
13%
Mercer Island
4 offices
10%
Tacoma
2 offices
5%
Gig Harbor
2 offices
5%
Kirkland
1 office
3%
By office type
Single-family
14 offices
36%
Family Foundation
13 offices
33%
Multi-family
12 offices
31%
Sector exposure
Healthcare44%
Technology38%
Real Estate34%
Education25%
Energy19%
Materials16%
Consumer16%
Financial Services12%
Share of the 32 offices carrying classified sector data. Many allocate across several sectors.
Data completeness

Exactly what's filled in, field by field

Coverage varies by office. This is the real fill rate for every field in the dataset, measured across all 39 offices, so you know what you're getting before you buy.

The download: a six-sheet Excel workbook — Summary · Offices (58 columns) · Contacts · Deals · CRM import — plus the same tables as CSV. Sample rows · all 58 columns

No dead ends — all 39 offices are reachable via a website or a direct channel. 97% (38) have a direct channel — a firm email, phone or contact form, or a named decision-maker's direct email or LinkedIn.

Per office · 39 offices
Identity & location
Company name100% · 39/39
Office type100% · 39/39
HQ city100% · 39/39
Description100% · 39/39
Firm profile
AUM band100% · 39/39
Sector focus82% · 32/39
Year founded69% · 27/39
Asset-class focus59% · 23/39
Geographic focus31% · 12/39
Contact & reachability
Website100% · 39/39
Company LinkedIn64% · 25/39
Firm email62% · 24/39
Phone59% · 23/39
Contact form38% · 15/39
Per named contact · 307 people
Person
Name100% · 307/307
Decision-maker flag100% · 307/307
Job title98% · 300/307
Reach
Direct email62% · 191/307
LinkedIn22% · 68/307

Emails and LinkedIn are provided where verified, not fabricated to hit a number.

How we built it

Compiled from public sources, reviewed before release

Each office is assembled from company sites, filings and public records, then reviewed and classified. The same dataset powers our research platform, where records update continuously. Field coverage is shown transparently above. Nothing is fabricated to fill a column.

Sources

Company sites, registries and public web sources, consolidated per office.

Inclusion

Entities operating as a single- or multi-family office in North America.

Classification

Office type, AUM band and sector focus assigned where the evidence supports it.

Refresh

Reviewed and refreshed quarterly; each release supersedes the last.

License

One purchase. Twelve months of refreshes.

Every number on this page is measured from the file you download.

Complete database access
List of the 30+ Largest Family Offices in Washington State · Single seat
$199
One user · personal license
  • Full 39-office dataset & 307 contacts
  • Excel workbook + flat CSV, CRM-ready
  • 12 months of quarterly updates included
Buy Now
Secure Stripe checkoutInstant downloadQuarterly updatesGDPR Compliant
FAQ

Buying questions, answered

The platform

This dataset lives in a live research platform

Search, filter and track every office — the same data this file is exported from, updated continuously. Need ongoing access instead of a one-time download?

Explore Family Offices in Washington State on the platform
The firm search screen listing multi-family offices across many countries, with filters, AUM bands, sector chips and contact-channel indicators

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