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Built by property people. Backed by technology.

LeaseSide OS was created to level the playing field in commercial property. We combine deep industry expertise with modern technology to help property managers achieve better outcomes, stronger relationships and lasting impact.

  • Our purpose
  • Property people
  • Powered by Clark AI
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Looking up a glass office tower
We know the challenges because we’ve lived them. We built the platform we always needed.
The LeaseSide OS team

Our experience

30+ years in commercial property.

20+ years managing assets and portfolios.

15+ years building platforms.

One mission: your success.

Committed to the future of property management.

People, technology, experience and outcomes working as one.

Innovate

Continuously evolving the platform with the latest technology.

Empower

Giving property managers the tools and insights to decide well.

Partner

Strong relationships with clients, experts and technology partners.

Impact

Positive change across the commercial property ecosystem.

Powered by Clark AI

Clark works alongside your team.

He reads every lease.

He prepares the work.

You approve it.

Real people. Real help.

Customer support

Our local support team helps you get the most out of LeaseSide OS: email support, a knowledge base and guides, training and onboarding, and fast responses.

Customer success

Your success is our success. A named contact partners with you on onboarding, adoption and ongoing training so you get the full value of the platform.

We’re building more than software. We’re building the future of commercial property management.

Thank you to the property managers helping us shape LeaseSide OS.

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Questions about us? Ask Clark.

Hi, I'm Clark. The people behind me have spent decades in commercial property. What would you like to know about them, or about me?