But if you are planning to repaint year after year on a rental, then a lower grade contractors paint is perfect, and might be $20 a gallon or less.

This is the type of calculation you'd do if you repainted the whole place or resod the entire lawn.As for your office, 50% of your home is too much office space.

Purchase price: $190,000 Cash invested: $223,000 Sale price: $275,000 List of upgrades included:Stairs Finish
-door hardware as needed
-Bathroom vanities (2 at 2nd floor and 1 for 1st floor)
-Interior paint
-Drywall repair
-Counter top
-Bathroom Floor
-Paint cabinets 
-Fix or replace Slide door 
-fix frog widow
-Instal lights 
-Repaint or replace doors
-fix any loose toilet
-Add a support at fence 
-Fix beam and drywall at garage where termites damages
-fix the air exhaust fan
-Dumpster services 
-Cleaning fix part of the roof, replace screen doors, replace window What made you interested in investing in this type of deal?

Incoming / replacement tenants are also not real picky - they'll preview before we re-paint and say, "No, we don't want to wait. 

We have repainted 1 building and increased rents maintaining 95%+ occupancy rate.

Older solid wood doors have more character and durability than most of the new doors on the market.For the crown moulding and baseboards... they might be easier to replace (than to strip down and repaint) if they were made of wood.

Repainted interior.

Patch up some walls and repaint the interior with new fixtures.

A new vanity, new wall paint, repaint the cabentry to match the new vanity, new 5k lightbutlbs, repaint the bathroom tiles, clean the grout on the floor and you are all set.

Are they putting up crown molding, scraping the ceiling to smooth it out,  repainting walls, doing plumbing because the vanity is going to be two sinks and have to move the toilet over now?