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Chestnut

Hiring

Chestnut is a YC Spring 2025 (P25) company. Based in San Francisco, CA, USA. Team of 2.

  • Fintech
  • Real Estate
  • Consumer
  • AI

About Chestnut

GPAgent's own fund-neutral profile, written from public information. Updated Oct 5, 2026.

Summary

Chestnut originates mortgages using AI agents, handling purchases, refinances, and cash-out loans for homeowners in Texas and Colorado. The AI handles the underwriting and processing work that loan officers and processors do at traditional lenders, cutting the interest rate customers pay. The founding team has prior operating experience scaling a mortgage business that handles a significant share of U.S. loan volume.

Business model

Interest rate on originated mortgage loans, with savings passed to borrowers versus traditional lender rates

Go-to-market

Homeowners apply directly through Chestnut as the lender of record, replacing the traditional loan officer and processing staff with an automated AI-driven workflow.

From the Y Combinator listing

How Chestnut describes itself in Y Combinator's public directory. Original listing (opens in a new tab)

The first AI mortgage lender

Chestnut is the first AI mortgage lender. We automate 99% of human work with AI agents, saving customers 0.5%+ in interest. This is Spencer's second mortgage startup; the first processes 2% of US mortgages annually. So far, Chestnut is licensed in Texas and Colorado where we power purchases, refinances, cash-outs, and more.

Facts

Industry
Fintech / Fintech -> Credit and Lending
Location
San Francisco, CA, USA
Team size
2
Status
Active
Stage
Early

Founders (1)

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