Mainstay is the intelligent system of record for residential real estate, combining each customer's data with proprietary data and thousands of external sources into a single, continuously updated record used to underwrite, price, and execute workflows across buying, owning, and selling homes. Its agentic platform automates tasks such as transaction execution, property taxes, HOA management, and payments, serving institutional investors and property managers - including 95% of the 60 largest residential real estate investors - and, following the 2026 acquisition of Truelist, brokerages and agents. Carved out of Opendoor as an independent company in August 2024, Mainstay has facilitated more than $12 billion in residential transactions and is led by CEO and co-founder Dod Fraser, Opendoor's former President.
1
Round
1
Industry
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Sep 16, 2026
Latest raise
Funding activity · 1 round
Sep 16, 2026
$18M
Series C+
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Pricing
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For individuals and small teams getting started with AI buyer intelligence.
$149
/month
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$249
/month
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