Chestnut
YC X25San Francisco, US · Founded 2025 · 2 employees · Hiring · 3 known investors
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512 people in our graph share verified history with the Chestnut team — schools, employers, funds. One of them is your warm intro.
Garry Tanunlockedknows Spencer Brown · together at Y Combinator (overlapped)
×11knows the team · via Y Combinator
Chestnut Mortgage uses AI to automate document review, loan processing, and comparisons to reduce costs and timelines for residential mortgage borrowers. The company operates as a licensed mortgage lender in Texas and Colorado, typically closing loans in 2-3 weeks with rates approximately 0.5% lower than industry standards.
Also known as Detta
Founders & leadership· Y Combinator alumni (X25)
Chestnut was founded in 2025 by Spencer Brown.
SB
Spencer Brownin𝕏Founder2025–2026Spencer Brown previously built a mortgage lending system that processed 2% of annual US mortgages. He has worked as an engineer at multiple early-stage startups and is now building an AI-driven mortgage lending platform.
Investors · 3
Competitors · 4
by search overlapPrior Finance42 shared keywordsPrior Finance operates a digital financial services platform offering personal loans, student loans, home loans, deposit accounts, credit cards, and investment tools through an integrated mobile application, serving both individual members and enterprise partners seeking lending solutions and technology infrastructure.
Own Up29 shared keywordsOwn Up is a mortgage advisory platform that uses technology to help homebuyers evaluate lenders, understand affordability, and compare loan offers. The company serves consumers seeking mortgages or refinancing options with transparent, objective guidance aligned with their interests rather than the lender's.
Chase28 shared keywordsA wealth management and investing service (J.P. Morgan Wealth Management via Chase) offering self-directed brokerage accounts with commission-free online trades as well as one-on-one advisor services, financial planning tools, and retirement accounts. It serves individual retail investors ranging from beginners to experienced investors in the United States.
LendEDU26 shared keywordsLendEDU publishes educational resources and comparative reviews to help consumers make informed financial decisions about loans, mortgages, and other financial products. The company earns revenue from affiliate partnerships with financial service providers featured on its platform.
Companies competing with Chestnut for the same Google search keywords, organic and paid, via search-intersection analysis.
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Frequently asked questions
- What does Chestnut do?
- Chestnut Mortgage uses AI to automate document review, loan processing, and comparisons to reduce costs and timelines for residential mortgage borrowers. The company operates as a licensed mortgage lender in Texas and Colorado, typically closing loans in 2-3 weeks with rates approximately 0.5% lower than industry standards.
- Who founded Chestnut?
- Chestnut was founded by Spencer Brown in 2025.
- Who are Chestnut's investors?
- Chestnut's investors include Y Combinator, Neer Venture Partners, Olive Tree Capital.
- Where is Chestnut headquartered?
- Chestnut is headquartered in San Francisco, US.