Cottage is a consumer services company committed to solving housing affordability.

Cottage takes the stress out of planning, designing and building custom ADUs.

Cottage was founded in 2019 by Alex Czarnecki. The company is headquartered in San Francisco, California.


Cottage has developed software and a marketplace that connects homeowners that want an ADU with contractors who can build them. They are a one-stop-shop for homeowners and property investors, handling feasibility, design, permitting and construction.


Cottage's SaaS-enabled marketplace for residential construction digitizes the design-build process, saving homeowners months of time and thousands of dollars, while providing its contractors a “predictable pipeline of projects and time-saving tools.”


Cottage partners with small to medium-sized local, “qualified” residential general contractors. The company has completed “hundreds” of projects and expanded from the Bay Area to Los Angeles.


Cottage is backed by Fifth Wall, Base10 Partners, Susa Ventures, 1Sharpe Ventures, DivcoWest, and others. The company raised $15M in Series A round on Apr 06, 2022. This brings Cottage's total funding to $18.5M to date.



  • Year founded: 2018
  • Funding Info: $18.5M over 2 Rounds (Latest Funding Type: Series A)
  • Yearly Revenue: NA
  • Employee Size: 51-200
  • Business Valuation: NA
  • City/Town: San Francisco
  • State: California
  • Country: United States
Related businesses