Chestnut Mortgage

The Mortgage Company We Wished Existed

Employees
1–10
Business Model
B2C

About

Chestnut Mortgage (legal entity: Detta, Inc.) is an AI-powered mortgage company backed by Y Combinator, licensed to originate mortgage loans in Texas and Colorado. Founded by Spencer Brown, a software engineer who previously built loan origination technology for major lenders, Chestnut uses AI to automate document review, loan option comparison, and application processing — reducing overhead and passing savings directly to borrowers as lower rates, typically around 0.5% below market. Most loans close in 2-3 weeks versus the 30-45 day industry average, and every borrower is paired with a dedicated human loan expert.

Summary

Chestnut Mortgage is a Fintech company based in San Francisco, United States.

Tech & App Stack

4 technologies & apps tracked

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