Updated:
Seneschal Family Office
Seneschal Family Office was founded in 2004 by Jon M. Duncan as an independent advisory practice. It now operates as a multi-family office serving clients...
Seneschal Family Office
Seneschal Family Office was founded in 2004 by Jon M. Duncan as an independent advisory practice. It now operates as a multi-family office serving clients across the United States and abroad. Jeffrey M. Lang, Candace E. Duecker, and Tania P. Kaarvand serve as owners and partners. The firm allocates across private equity, real estate, commodities, and venture capital. It covers buyout, growth, seed, Series A, Series B, and venture stages. Geographic exposure spans North America and Europe. Confirmed technology focus includes enterprise software alongside FinTech and digital health. No specific portfolio holdings or co-investors appear in public records. Team size and total deployment figures remain undisclosed. The firm maintains its sole office in Tacoma. It holds membership in The Family Wealth Alliance, where Jeffrey Lang serves as co-chair for events. No dated operational events from the last 24 months are recorded in available sources. Seneschal functions as a fee-only fiduciary without product sales. Its structure centers on integrated planning for families navigating transitions rather than a dedicated investment platform or external fund commitments.
General information
Firm type
Multi Family Office
Year founded
2004
Location
Region
North America
Country
United States
City
Tacoma
Corporate office
2323 N. 30th Street, Suite 200, Tacoma, WA 98403
Principals
Jon M. Duncan
Founder and Partner Emeritus
Jeffrey M. Lang
Managing Principal and Owner
Candace E. Duecker
Partner and Owner
Tania P. Kaarvand
Partner and Owner
Sector focus
Frequently asked questions
What is Seneschal Family Office?
Seneschal Family Office is a multi family office headquartered in Tacoma, United States.
When was Seneschal Family Office founded?
Seneschal Family Office was founded in 2004.
Where is Seneschal Family Office headquartered?
Seneschal Family Office is headquartered in Tacoma, United States, in the North America region.
What does Altss track for Seneschal Family Office?
Altss maintains an OSINT-verified profile of Seneschal Family Office covering investment focus (ESG policy, ticket size, target IRR, currency preference, regional focuses, industry focuses, technological focuses), team (service providers and advisors), deals (company deals and fund commitments), assets (real estate, public market positions, private companies, art and cultural holdings, philanthropy and foundations), and network (club memberships, associations, and event participation). Detailed values are available to Altss subscribers.
What is Seneschal Family Office's website?
Seneschal Family Office's public website is www.seneschalfamilyoffice.com. Verified contact details for principals and decision-makers are available to Altss subscribers.
What type of firm is Seneschal Family Office?
Seneschal Family Office is classified by Altss as a Multi Family Office, operating from United States within the North America region.
How does Altss source intelligence on Seneschal Family Office?
Altss combines OSINT (open-source intelligence) with regulatory filings, public disclosures, and licensed data partners. Source provenance is tracked to support compliance-ready research workflows.
When was Seneschal Family Office's Altss profile last updated?
Seneschal Family Office's profile on Altss was last refreshed on June 3, 2026. Continuous updates are applied as new public information is verified.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
Need institutional-grade insight on family offices?
Altss delivers:
Prefer a guided tour?
We’ll walk you through: