Skip to content
YCX25· AI

Chestnut

The first AI mortgage lender

ActiveChecked 16h ago
Batch
X25
Status, per YC
Active
Team size
2
HQ
San Francisco, CA
In X25143 companies, 89% AI

Founders

  • Spencer BrownFounder/CEO

Same space

About Chestnut

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.

San Francisco, CA, USA

Chestnut: questions

Which YC batch was Chestnut in?

Chestnut was in Y Combinator's Spring 2025 batch (X25).

Is Chestnut still active?

Y Combinator lists Chestnut as active.

Who founded Chestnut?

Chestnut's founders, as listed on its YC page: Spencer Brown (Founder/CEO).

Where is Chestnut based?

Chestnut lists San Francisco, CA, USA as its location on YC's directory.

Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.

Weekly: new YC data, AI and devtools companies and status changes, Mondays.