Identity graph
Horizon House headquarters, locations and relationships
- Industry
- Healthcare
- Founded
- 1961
- Phone
- +1 206 624 3700
- Website
- horizonhouse.org
Horizon House office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Seattle | Washington | United States | Headquarters |
| Cortland | New York | United States | Office |
| Philadelphia | Pennsylvania | United States | Office |
- Parent company
- No parent company recorded in GraphIQ.ai.
Verified from public filings, company websites and news · Methodology
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Revenue, headcount, growth and industry codes.
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Capabilities (available after sign-in)
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News (available after sign-in)
Recent coverage and signals, resolved to the entity.
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And more (available after sign-in)
Subsidiaries, people and lookalike companies.
Who uses the Horizon House entity
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Revenue and GTM teams
Territories, enrichment and account expansion on one resolved account.
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Suppliers, sites and partners mapped to the right legal entity.
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Corporate family, comparable companies and deal sourcing.
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Supplier vetting, ownership and jurisdiction checks against one verified entity.
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Developers and AI agents
The entity and its relationships through the REST API and MCP server.
Developers
About Horizon House
Horizon House is headquartered in Seattle, Washington, United States. Founded in 1961, the company has 3 recorded locations and employs approximately 201 people worldwide.
Where is Horizon House's main office?
Horizon House's main headquarters office is located at 900 University St, Seattle, Washington 98101-2797, United States. This is the company's primary corporate address.
Horizon House regional offices
Beyond its headquarters in Seattle, Horizon House has recorded locations in United States.
Horizon House contact information
The main switchboard for Horizon House headquarters can be reached at +1 206 624 3700. Official website: horizonhouse.org.
What does Horizon House do?
At Horizon House, we celebrate your independence and welcome everyone who chooses to live creatively into our unique urban community.
One entity, every stage
Put Horizon House to work across your revenue bowtie
- Target Define the market Build the account list from companies shaped like your best customers, Horizon House included. Fingerprint search
- Cover Plan territories Horizon House's 3 locations roll up to one account, so it lands in one territory, once. Territory planning
- Engage Act on timing Leadership changes, funding and M&A arrive linked to the account, not a loose headline. Signal monitoring
- Convert Close on a resolved record Inbound and closed-won attach to one CRM record, with no duplicates to merge. CRM enrichment
- Retain Ground every answer Customer teams and AI agents answer from the same entity, with a source and a date. AI agent data layer
- Expand Find the next buyer inside Follow subsidiaries and divisions to the next team that can buy. Account expansion
About the source
What is GraphIQ.ai?
A B2B identity graph. It resolves each organization into one verified entity and maps its parent and subsidiaries, employees, competitors and news signals. Revenue teams use it in the product; AI agents query it through the REST API and MCP server.
POST/api/v2/organizations/search
Horizon House: frequently asked questions
Where is Horizon House headquarters?
900 University St, Seattle, Washington 98101-2797, United States.
What is Horizon House's phone number?
+1 206 624 3700 (headquarters).
When was Horizon House founded?
1961.
How many employees does Horizon House have?
About 201, as of October 2026 (GraphIQ.ai estimate).
How many offices does Horizon House have?
3 locations, including Cortland, Philadelphia.
Questions about GraphIQ.ai
Is GraphIQ.ai a list of companies like a spreadsheet?
No. Each organization resolves to one verified entity linked to its parent, subsidiaries, people and signals, so Horizon House here is the same Horizon House in your CRM, territory plan and agent answers.
Where does this Horizon House data come from?
Public filings, company websites and news, resolved to one entity and continuously updated.