Mainstay
San Francisco, US · 8 known investors
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Mainstay is a platform for residential real estate that unifies fragmented property data from sources like MLS listings, county records, HOA documents, tax assessments, and permits into a single system for buying, owning, and selling homes. It connects data, decisions, and execution across real estate workflows to provide reliable property information.
Founders & leadership

Investors · 8
How we know: Era Ventures's portfolio page · the company's own site · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: the company's own site · funding news · globenewswire.com · Not right? Tell us
How we know: Clocktower Ventures's portfolio page · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: open dataset · 5k.vc investor directory · Not right? Tell us
How we know: funding news · open dataset · 5k.vc investor directory · Not right? Tell us
Related companies · 2
Companies working in the same space as Mainstay.
In the news
Frequently asked questions
- What does Mainstay do?
- Mainstay is a platform for residential real estate that unifies fragmented property data from sources like MLS listings, county records, HOA documents, tax assessments, and permits into a single system for buying, owning, and selling homes. It connects data, decisions, and execution across real estate workflows to provide reliable property information.
- Who founded Mainstay?
- Mainstay was founded by Dod Fraser, J.D. Rasmussen, Michael Dulfer, Nathan Harbacek.
- Who are Mainstay's investors?
- Mainstay's investors include Era Ventures, Khosla Ventures, Clocktower Ventures, FJ Labs, Bisk Ventures, Eastward Capital Partners, Inspired Capital, Techstars.
- Where is Mainstay headquartered?
- Mainstay is headquartered in San Francisco, US.








