Then there's scratches on doors, chewed up trim, or torn up carpet to worry about. 

You could always add trim moulding.

Then there was tree trimming and now there is front sod that HOA wants me to replace.

You certainly don't want to pay for income you plan to trim off:)If you decide to take on this deal, make sure to do a demand study for the sale of the homes before you proceed. 

Installed 700 sqft of LVP from Lowes for a total of $2,250 installedInstalled 4 new cabinets in the new kitchenette for $800Painted the entire interior trim/ceilings/walls for about $500 - did this ourselvesPainted the entire exterior for about $500 - also did this ourselves Still to come: New countertops for downstairs and upstairs - $2,500 installedElectrical panel upgrade and other electrical - $3,000Fence - $4,500Front deck - $2,500 We've learned a lot from this project and I would say two major takeaways right now are:Find better deals so that you can avoid doing any of the labor yourself and focus on finding future dealsFind a better GC relationship instead of trying to half GC ourselves and half GC with a GCWe're running into some trouble with the refinance at this point due to a lot of lenders putting a pause on their rental loans for investment properties.

Told him to leave ill do it myself.)Bad sill plate on rear corner (contractor)Replace front porch postsBuild backporch stepsDemo barnInstalling concrete footers under home, laying block and shimming to your jacked levelSetting house back down on blocks and reattaching to foundationRemove floor and portions of subfloor in kitchen & back porch and replacement Window repairTemporary power pole (electrician)Electrical service upgrade, outlet replacement and GFCI Install (mix of Electrician and us)Label panels (electrician)All exposed wiring must be protected (basically just replaced all of it)Replace missing light fixtures (new fans throughout)Build wall in living room to convert to 3rdbedroomRe plumb house and pressure test plumbing (plumber)Install smoke detectors hardwired to meet code (electrician)Water Heater electrical line, and core discharge for water heater under house (plumber)Tear out Old ac unit under houseWindow screensWindow locksBackflow prevention valve (plumber)Fart fan ventilation for bathroomApproved Address Number DisplayedFlaking paint abatement interiorClothes Dryer exhaustPaint Untreated woodRemove all debris, Remove old tiresRemove chain link fenceTreat house for black antsPoly floorsMud and paint wallsAppliancesDoors/locks.Roof patch, remove 12x24 section, cut out rot, sister in new beams, put new plywood & shinglesPiles and piles of new electrical wiring (electrician/us)Sand all walls and spray texture ceiling and walls with joint compoundPaint whole house inside and outNew trim everywhere.Sand the every living hell out of the floors (100 hours of labor + help)Gutters and french drainNew mailboxA/c Unit.

Simple things I've done as a homeowner/landlord are flooring, painting, trim work, built a mantel, built and arbor, garbage disposal...Being a handy man are skills you can learn for life and there are a lot of good videos on Youtube. ;)

Not all sq ft in a house costs the same.Go to your local building supplier, go up and down the isles, and get actual prices for material for kitchens, cabinets and countertops, floors, paint, basic lumber and trims, plumbing fixtures, electrical fixtures. etc...You usually can get estimates on labor from that same source. 

It was an 8 day job just for the trim.

Price - 235,000 - 3% from seller towards closingProperty Type - Multi FamilyYear Built - 1949Units - 4 unitsBed/Bath- 2 bed/1 bath per unitSqft - 500 per unit - 2000 totalRecent capital improvements-- 2018Unit 3: New fridge, window, vanity and toilet- 2017Unit 1: New deck, AC, washer and dryer, baseboard heaters,kitchen faucetUnit 2: New deck, AC, window, baseboard heatersUnit 3: New paint, carpet, trim, fixtures, baseboard heatersUpdated landscaping- 2016Unit 2: New fridge, stove, toilet, vanity, tiled shower, paintcarpet, trim, fixturesUnit 4: New tile flooring, bathroom sink faucet, kitchenfaucet, paint, trim, baseboard heaters, AC and fixturesNew roofHow I will be funding it?