There are very unique opportunities like working with government to build and provide housing, or create a business that renovates rentals for individuals with physical disabilities... flats with wider doorways, handicap accessible bathrooms, lower counter tops, etc. 

See the Zillow link for the property below; interior is only 2,000 sq. ft not 2,556 (2,556 includes the garage)https://www.zillow.com/homedetails/600-N-13th-Ave-...Work for this house would include turning it into a 3/3 while leaving the existing 2 car garage, 3 brand new bathrooms, remove the wall separating the kitchen from family room, refinish and/or replace kitchen cabinets (countertops will be reused), replace all exterior doors and windows with new impact glass, new HVAC system with duct work, minor electrical (high hats, new fixtures, inspection repairs), paint, new casing/baseboard, and maybe new interior doors. 

I also have a unit to turn over (paint, flooring, countertops, fixtures).

Installed granite counter top and managed to save original cabinets, refinished floors, added in unit laundry which I think made a huge difference.

If two have granite counter tops and tiled showers and one does not you should see that reflected in the sales prices.

His reverse mortgage is for $270,000 and he has a personal loan he took out for grant countertops in the kitchen for $6700. 

There is a school a block away and a Walmart, Ross, Harbor Freights, Dunken Donuts and Goodwill in the adjacent areas (all 0.5 miles away).This property was stripped down to the studs and has been completely redone with granite counter tops, stainless steel appliances, new carpet, tile, heaters, HVAC system, water pipes and electric wire.

.)- Appliances: $6000 (GE, whirlpool, LG, Bosch, no viking)- Countertop Quartz for 60 sq ft; $4500 (Includes installation)- TOTAL : $24,500

I am going to need a new oven, counter tops, cabinets, paint, floors, soot removal throughout the unit. 

Especially when you are flipping (and not holding) there really is no way to give a concrete answer.But to give you an idea why it depends on so much...It depends on location (2 reasons).First reason, if all the houses in your area have granite countertops, central AC, yada yada yada, you need to include them too.An other reason it depends on location, believe it or not contractors are more expensive in those fancy people neighborhoods.