However if it only has 3 years life left you better plan on allocating $180 a year for that item. 

I have looked at this property and it's in really good condition the only thing it needs updated is one of the units currently has window AC  but i can update the central so i allocated some money for one for 3000.00.

Economics is the study of the allocation of scarce resources to their most efficient uses, and over time, free markets will virtually always trend in that direction.

You need to use your building basis, the portion allocated to land needs to be excluded.

Las Vegas paid for and installed a 3rd intake at a lower level than everyone else so that we would get our allocation even if others couldn’t physically get there’s.

You need to structure the deal you see doing and allocate cost and value to the stakeholders according to the parties respective contributionsThis too broad a discussion to cover here Send me a DM if you’d like to chat

In other words, records must be maintained "in a manner so that the assets of the series can be reasonably identified by specific listing, category, type, quantity, or computational or allocational formula or procedure."

So if you see lower or higher for a particular property it could simply be the owners preference for how they allocate internal funds.

This may sound overly simple, but we allocate $50/unit/month.

As far as repairs and Capex go, depending on the property, we allocate 7-10% of rent for each (14-20% total).