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Everything you need. Nothing you don’t.

LeaseSide OS brings every part of commercial property management into one intelligent platform. Clark AI handles the busy work, so you can focus on what matters most.

  • All-in-one
  • AI-powered
  • Built for property managers
LeaseSide OS Home screen on a laptop: Clark greets the property manager with today's priorities, arrears, renewals and insights

One platform. Every part of the job.

From leasing and compliance to reporting and renewals, LeaseSide OS connects your data, your team and your tenants in one place.

Smart inbox

Clark AI triages emails, drafts replies and flags what needs your attention.

Tenancy schedule

See all key dates, renewals and deadlines in one clear, interactive calendar.

Leases and documents

Store, search and manage all your leases and documents securely.

Reports and insights

Real-time reports and market insights to make smarter decisions.

Tasks and approvals

Automate workflows and approvals to keep deals moving.

Clark AI

Your AI property partner that works around the clock to save you time and reduce risk.

What Clark catches

Rent review due in 30 days.

Insurance expires Friday.

Option to renew closes soon.

Notice drafted. You approve.

How Clark works

From the first sign of risk to your approval, in five steps.

Watches

Keeps an eye on every lease, key date and inbox across your portfolio.

Spots risk

A rent review falling due, an insurance certificate expiring, an obligation missed.

Evaluates

Checks the clause, the figures and the history, and cites the page it relies on.

Asks first

Prepares the notice, task or reply and shows you why, with the source.

Acts

Carries it out once you approve, and records who approved it and when.

Meet Clark

Your AI teammate inside LeaseSide OS

Clark watches every lease, key date and inbox. He spots what needs attention and prepares the notice, task or reply, with the clause he relies on.

Clark, the LeaseSide OS assistant: a white sphere with a glossy black face and glowing smiling eyes, gently floating and blinking

Nothing leaves without you

Clark prepares the work. You approve it.

Clark drafts the notice, runs the calculation and shows the clause it came from. Sending it is your decision, and the record shows who made it.

Clark will not send correspondence on his own, will not overwrite your records, and will not guess at a figure he cannot cite.

  • Every answer cites the clause and page it rests on
  • Every consequential action waits for a person
  • Your data is never used to train models
LeaseSide OS inbox on a laptop: Clark suggests actions for a tenant email, such as creating a maintenance issue or drafting a response

Secure by design

A modern platform, protected by AI agents and built for the latest AI threats.

Hosted in Australia

Stored in Microsoft Azure's Australia East region.

Guarded by AI

AI security agents review every change to the platform and check each release before it reaches production. An automated security audit runs every day.

Built for AI threats

Leases, emails and call transcripts are read as information, never as instructions, so a hidden prompt in a document cannot steer Clark.

Never used for training

Your leases and questions are not used to train AI models.

See LeaseSide OS on your own portfolio.

Hand us one lease. We will show you what Clark finds, prepares and waits for you to approve.

Talk to Clark

Still wondering? Ask Clark.

Hi, I'm Clark. You've seen what LeaseSide OS does. What would you like to know about how I'd work on your portfolio?