You will need to install outlets, switches, and lighting fixtures as needed,6.

Every property will need a new roof, furnace, AC, appliances, driveway, drain line, cosmetic updating, flooring, tenant damage repair etc. over time and of course unexpected expenses often come out of left field as well, usually several in a row and at the worst possible time.

On the current unit I am in Texas heat with no A/C installing kitchen/bath cabinets, fixtures and hardware; running electricity and TV boxes for wall mounted TV’s; wiring outlets and switches; hanging fans; installing recessed lighting and other fixtures; installing blinds, curtain rods, staging furniture and decor.im not billing for this but suppose I should charge the going rate as well.

With the exception of unexpected costs, their estimates will be based on experience, expertise, and up to date knowledge on material costs.

I finally have an outlet to put that all on and I'm not willing to give that up.

This was just unexpected and I was uneducated on this issue.  

If the unexpected big expenses arises, it could really hurt (I've budged 2% of purchase price for Maintenance, which totals $12,000/year for one property). 

Also be sure to add a contingency line for unexpected repairs!

Even if you do not have a house entrance for electricity, you could run an outlet connected to one of the units electrical panel.

You should have some capital set aside for the purchase and then for repairs and unexpected issues that could arise.