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Data and tools for single-family residential real estate: valuations, comps, rent estimates, underwriting and list-price review.
- Location
- San Francisco, United States, United States
- Category
- Marketplace
- Funding
- VC-backed
Sources, checked Sep 26, 2026. A fact that is missing is one we could not source, not a zero.
- Summary: written from mainstay.io
- Location: mainstay.io
- Funding: mainstay.io — “Backed by Khosla Ventures, Era Ventures, and the largest residential real estate platforms”
Category is our own classification. Spotted something wrong? Tell us.
Frequently asked questions
What does Mainstay do?
Data and tools for single-family residential real estate: valuations, comps, rent estimates, underwriting and list-price review.
Where is Mainstay based?
Mainstay is based in San Francisco, United States, United States.
How much has Mainstay raised?
Mainstay is vc-backed. We have not verified a funding amount.