You have no idea if his brother really is an electrician, or the quality of work he will do for free.You also have no idea of the quality, price, or STYLE of the fan.If you want ceiling fans in the unit (is it a unit or a SFH) it less risky to price fans yourself that you want to own, and get bids from fan installers.Typically they use a rod that goes up into where the old light was, and the tighten it by hand against the joists and hang the junction box from that rod, then wire the fan in.If the location has no light there, they will have to cut holes in the drywall for the fan and a switch, and make some extra access holes in the drywall for pulling wires also, and those access holes will need to be re-plastered by someone who knows how to do this properly, and has EXPERIENCE matching the plaster finish, and repainting the repair so you cannot see it.Fans might make the unit more attractive to future tenants in some areas, meaning less time on market between renters or more rent.Letting a resident, or his brother just "Do Their Own Thing" with your Asset is very risky.If it were mine, and I wanted fans in it, I'd be the one to have it done, and I'd try to get additional rent for it (re-negotiation the lease for an added $50 a month or something like that).Just my 2 cents.Good Luck!

You'll have drywall cracks, so you should factor in drywall repairs and repainting. $$$4.

May/Jun we sold the house, made > $100k by just changing all windows and repaint exterior. 

Otherwise, it might require to paint with Kilz odor blocker and then repaint the house....Any suggestions? 

We wanted them to scrape the popcorn, skim, and repaint.

We've been managing our own units for 5 years now and have had very few issues beyond needing to repaint a unit and patch some holes in walls from intentional abuse.  

He has to repaint about every three years or so, and that’s about $40,000 per door.

Lead-based paint was removed from circulation nearly 40 years ago so most houses have been repainted since then and no longer pose a risk.  

Just keep in mind (and budget) that dealing with it would be stripping to the bare wood and repainting.

When I said this isn’t the quality we agreed on (no prep, imperfect coverage), he said you’re kidding me if you expect me to repaint your house.