Team Techstars Sydney: Meet Onsite, the all-in-one building and strata management platform

Ahead of the TechStars Sydney ‘Demo the Future’ evening on December 8, Startup Daily is profiling the 12 startups and their founders in the 2025 cohort.

Our fourth profile is Onsite – a startup dealing one of the most painful parts of apartment living, strata management.

Onsite 

Founder: Nathan Croxton 

One-liner: Onsite makes it easy for everyone to live in and manage a well-run strata building.

The future of building management

“Apartment buildings are the backbone of our cities – and the key to solving the housing crisis. Yet the systems that run them are stuck in the past,” Nathan Croxton, the founder of Onsite, explains. 

“In years to come, building management will be connected, automated, and proactive. AI will retain the long-term historical knowledge of every building – connecting dots across years of data to drive more informed decision-making. Day to day coordination between residents, contractors, and managers will be seamless, with transparency and accountability built into every process.”

If you’ve ever had the thankless task of being part of a Strata Committee, it’s a compelling future, especially as you add the increasing regulations on building standards and compliance obligations.

We all know the government loves to add compliance rules, but they rarely take any away.

What’s the problem and why does it matter? 

“If you live in an apartment complex. Then chances are it is strata managed and you’ve likely not had a pleasant experience in dealing with that system,” Croxton said.

There’s 3.2 million of those residences in Australia alone.

“Managing an apartment building involves a constant stream of issue handling – contractors needing access, elevators breaking down, noise complaints, tenants moving in and out, lost key fobs, and car stackers or garage doors failing,” Croxton said.

“And beyond the operational challenges, there’s the human element – helping people live well together in a shared environment. It’s a never-ending list that requires constant attention and care.”

Today, most of that is handled manually through emails, phone calls, post-it notes, or by piecing together decades old software.

That’s what Onsite is solving. 

How does it work?

Onsite is an all-in-one building & strata management platform that connects residents, committees, and building managers in one place.

With Onsite, you can:

• Report and track issues in real time.
• Manage maintenance, contractors, and approvals
• Store and access building documents securely
• Communicate seamlessly with residents and committees

“Ultimately, we’re creating the brain of every building – a system that outlasts any one committee or manager and keeps the knowledge, history, and care of the building alive,” Croxton said.

Why did Techstars invest?

“Nathan is technically brilliant. He built every part of the product from start to finish. And we know it’s excellent because he has incredible revenue expansion. He signs one building as a customer, and very soon the management company shifts their entire portfolio to Onsite,” says Techstars Sydney Managing Director Christie Jenkins. 

“We’ve seen that technical brilliance generously shared within the accelerator where he is helping other founders with the code and AI integrations in their own products. He rebuilt the entire backend of another founder’s product overnight. How can you not invest in a founder who can build, who can sell, and who contributes wholeheartedly to the growth of others?” 

The most important lesson Techstars Sydney taught him

“Momentum,” Nathan Croxton said.

“Techstars taught us to become ruthlessly focused in order to create more and more momentum. Every founder has different strengths and when you sit next to someone who sells faster than you, or pitches better than you, or teaches you a new AI workflow, it’s impossible not to speed up your own progress.”

• See Onsite and the Techstars startups in action at Demo the Future, Monday December 8, 5-8pm. Details here.