The best investment is in each other.
At Mainstreet, we transform investment opportunities to fit the needs of the communities around us, because we believe the best investment is in each other.
Building space for what’s next.
Mainstreet is an investment company focused on the acquisition and development of real estate properties and brands across senior living, apartments, self-storage, and industrial products. We're headquartered in Noblesville, Indiana, and growing across the Midwest.
The Mainstreet team and its principals have extensive experience in real estate development, management, and operations. Our executive team has built more than 70 ground-up developments and taken two companies public via IPO.
Workspaces
Brands
Developments
Experience

Founder & Chief Executive Officer
Zeke Turner
Zeke Turner is the Founder and CEO of Mainstreet, a multi-vertical real estate development company that creates vibrant communities where people can thrive. Mainstreet’s portfolio spans senior living (independent living, assisted living, and memory care), industrial workspaces, consumer storage, and retail and commercial development. Across all of it, the focus is the same: affordable, high-quality places to live, work, and grow.
In 2002, at age 25, Zeke left a job on Wall Street to start a real estate development company. That company became one of the nation’s premier developers of post-acute healthcare properties. It focused on short-stay rehabilitation and therapy care that helps patients transition from hospital to home, and it completed more than 50 developments across the United States.

Chief Operating Officer & General Counsel
Courtney Turner Milbank
Courtney Turner Milbank is the Chief Operating Officer and General Counsel of Mainstreet. She oversees enterprise-wide operations and organizational strategy across all of the company’s development verticals. She also leads the strategy and execution of all legal matters, including corporate governance, compliance, real estate transactions, contracts, litigation, government affairs, and property tax.
Before joining Mainstreet, Courtney was a litigator. She practiced primarily in constitutional law, campaign finance law, civil litigation, appellate practice, and United States Supreme Court practice. She is admitted to practice before the U.S. Supreme Court, the Indiana Supreme Court, and multiple federal courts.

Chief Financial Officer
Kyle McDonald
Kyle McDonald is the Chief Financial Officer of Mainstreet. He leads the company’s financial reporting and strategic financial planning. In addition to his CFO role, Kyle runs operations for BUILT, Mainstreet’s industrial workspace vertical, and leads the company’s asset management team, overseeing portfolio performance across Mainstreet’s operating properties.
Kyle brings more than a decade of accounting experience and a background in commercial real estate finance. He worked his way up through the finance function, starting as a finance associate and advancing to operations accountant, controller, and ultimately chief financial officer before joining Mainstreet. Along the way, he gained hands-on experience at every level of financial operations. Most recently, he managed complex financial portfolios as CFO of a company in the industrial sector and brings that same discipline to Mainstreet today.
How we work.
Our core values aren't just posters on a wall. They shape how we hire, how we make decisions, and how we treat the people we work with and the communities we build in. They keep us focused on what matters. And they're a big part of why we believe the best investment is in each other.
Never StopImproving
We are not content with “how it’s always been done.” We believe things can be better.
Be CandidBut Kind
We don’t shy away from the truth, but we always communicate with love and kindness.
AddValue
Everything we build and every decision we make should add value to the people around us.
Work Hardand Have Fun
We work hard and smart, but life can’t be all work. Laugh, connect, and take time off.
Best IdeaWins
Best idea wins, full stop. Great thinking can come from all corners of the organization.
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