One company. Six ways we build community.
From active-adult neighborhoods to self-storage, every Mainstreet brand serves a different need — and every one traces back to the same belief: the best investment is in each other.
Built to meet a community's whole life.
Mainstreet invests in and develops real estate across senior living, active-adult, apartments, self-storage, and industrial products. We build brands, not just buildings — each one designed around the people it serves, and all of them growing across Indiana and the Midwest.
The Portfolio
Mainstreet invests in and develops real estate across senior living, active-adult, apartments, self-storage, and industrial workspaces.
Building where community thrives.
From our headquarters in Noblesville, we've grown a portfolio of communities and workspaces across Indiana, from LILA neighborhoods in Greenfield and Lafayette to BUILT industrial parks in Westfield and South Bend. Each location is designed around the people and businesses it serves, and the map keeps growing.








