List of the 30+ Largest Family Offices in Washington State
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.
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.
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.
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.
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.
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.
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.
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
Ranked by disclosed AUM band, then by named-contact depth: the same ranking the per-country pages use. Offices without a disclosed AUM band rank below those with one. The file is sorted by that ranking and contains all 39 qualifying family offices in Washington State in our dataset, not a sample. The 30+ in the title is the minimum we guarantee across refreshes.
An Excel workbook (Overview, Offices and Contacts sheets) plus a flat CSV, delivered as an instant download after checkout and ready to import into your CRM.
Every record reflects the latest quarterly review; the exact data vintage is shown at the top of this page. For 12 months after purchase, each new release is included at no extra cost. List membership can shift between releases as office data changes.
Family offices rarely advertise themselves. Assembling 39 verified family offices in Washington State with 307 named decision-maker contacts from public sources takes a research team weeks. This file is that research already done, sold as a one-time purchase rather than an annual platform contract.
Yes. 37 of the 39 offices (95%) include at least one usable email address: a firm or department inbox, a named decision-maker's direct email in the Contacts sheet, or both. Filter to those rows and you have a targeted email list. The difference from a plain email list is the research around it: every row carries the profile columns to qualify a firm before you write to it.
One purchase covers internal business use within your organization: import it into your CRM and use it for outreach, research and analysis. Reselling, republishing or passing the data outside your organization is not allowed; the full license terms are on our Terms of Service page.
Yes. Checkout issues a tax invoice together with your receipt, and you can add your company name and VAT or tax ID during checkout so the invoice is made out to your business.
Data downloads are final sale once delivered, which is standard for digital B2B data. To judge quality before buying, review the sample rows and the field-by-field completeness table on this page, or request the free sample from the site. Broken or incomplete downloads are fixed promptly, and if a delivery differs from what the page advertises we review it individually.
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?