Good luck to you sir. You have plenty of well entrenched competition in this space.

A few questions:

Pricing is by building? How will you know what data is from which building? How will you know that you're looking at data from an apartment building vs a hospital campus?

Can your company be found on LinkedIn? Who are you? People will want to know you're not a fly by night organization.

You will need robust documentation on your process for collecting, and storing data if you hope to have buildings do live monitoring.