Probably 2 long, parallel onesBathroom 7000Replace flooring with LVP (waterproof kind), if vanity can be saved - save, sand and paint, replace counter top with manufactured quartz, replace sink, replace plumbing, replace faucet, replace lighting, replace bath pan with new fiber glass panand tiles around the shower area (builder grade/might bump to 1 grade higher)Flooring @ 2$ a sqftSave, refinish hardwood flooring in main bedroomHVAC175 a pieceinstall new window units if current ones are not functionalLighting and fixtures 1000Replace with new ceiling fan and down lightWindows already included from unit 1Reglaze if not too bad condition, replace if damaged/beyond repairStair area 1500Replace stair with laminate, replace door going from unit 1 to stairwell, paint stairwell area, replace window on top of stairwell areaGas line 175InpectCasita total $13425.00interior 1500remove old paint, tape float repaint - agreeable greyDoors 250Save if possibleCabinet 750Save if possible/ Sand & Paint/ replace where neededHood range 250Vent to outside of the houseUpper Cabinets 500Remove current cabinets, replace with floating shelves.

Widened driveway to support multiple cars, completely renovated the kitchen with new cabinets and appliances, completely renovated the upstairs bathroom with new everything, refinished all floors, replaced all windows by framing down custom window spaces to fit standard windows, upgraded the electrical box and buried the service, painted the exterior, finished the basement to add another bedroom, full bathroom, and living space.

We repaired the foundation issues, upgraded the electrical, added central HVAC, refinished the floors and renovated the interior.What was the outcome?

Personally refinished at least 14 old hardwood floors, then tons of cabinets, countertops, doors, you name it. 20x return all day and no haul away or inevitable problems the retro fits always have. 

Refinishing the wood floor in the living room would be pretty much impossible, but working in the bathroom or the basement or the exterior could work.  

Has anyone refinished countertops (instead of replacing them)?

Cabinets, refinishing floors, paint, tile, etc.

A tenant in my 3 unit reached out about a leaking shower head, low water pressure, getting water for the tub reconnected(it has the old setup with 4 handles with 2 going to shower + 2 for tub spout), and refinishing the rusting tub which the prior owner did every 5 years.I've had the property for 5.5 years, and besides upping rent since I acquired, I haven't raised rents.

I had a contractor refinish my hardwoods for me and he finished 3 days ahead of schedule and did a fabulous job.

Refinished both units and increased rent.