adding meter is like $3-8k per meter, pro rata billing based on unit size

I assume it's either a reduction to the basis of the property, or as a reduction to the closing costs to be amortized over the life of the loan (or a pro-rata portion of both).Thanks in advance!

Many commercial leases are structured where the tenant is responsible for picking up its pro rata share of the expenses over a base year (the first lease year).

Also you want to have language that your pro-rata share is only for your space.For example a center is 100% occupied and one tenant goes out.

So you still pay the whole bill but you can apportion on a pro-rata basis the amount they used.

So you will earn the base rent every month plus each tenants pro rata share of common area expenses, taxes, and insurance.

Yes, the proper term is a blanket loan and the pay off doesn’t have to be the exact pro rata share of that one property.

Also, does it make sense to use the same BRRRR calculators and just assume a $100 purchase price for the Pro Rata data?

It's usually better if separate meters on each business unit so tenants do not complain they are paying too much pro-rata share because another tenant is using more than them.

Any extensions, if granted, will require a pro-rata daily fee.