They can install more control features in $20 and $100 bills like other countries.  

Job included inside work of leveling floors, installing flooring, paint walls, kitchen cabinets, etc in both units, as well as lay a new driveway, fence the back yard, provide attic fans, and install electric to the crawlspace to add lights and a sump pump.

Perhaps an installment sale will also achieve what you want if you can keep their income below a rate thrshold. if they are sensitive to capital gains, then think through options where you can get it stepped up. 

Basically, one of the floors was just empty, and they installed a new kitchen and bathroom.

Licensed with permits ~$3,250.HWT standard gas single family low efficiency without exhaust retrofit $900.Sand and stain hardwood floors, natural stain $3 per sf.Paint interior walls, ceiling trim and doors 3 tone paint scheme 2 coats $3.20 per sf (floor area cost includes paint)Click lock LVT flooring install overlay inclusive of prep and quarter round $4.50 per sf (materials and labor)Asphalt roof installation 3/1 - 800 sf bungalow with 2 layers of shingles - ~$7,900Standard porch cap replacement with 2 new precast concrete steps ~$2,500Used stove or refrigerator delivery and install $350New stove or refrigerator delivery and install $HD model specificUse this as a general guideline. 

Going over maps of known repairs with contractors showed that there were a few houses where people tried to have piers installed and ran out of money before hitting stable soil, others in the hyper local area did have to go to 100+ ft.  

Trust invests the cash to make the payments on the installment sale to the seller.

By purchasing properties in high-demand urban areas such as Berlin, Munich, Hamburg, or near military installations, American investors can generate reliable monthly rental income.

Install cameras and exterior lighting on timers, place no trespassing signs, and place items that indicate occupancy - like a BIG dog bowl near the front door, shoes, etc. 

In the end, it would have made more sense to hire a couple handymen for a week or two than me spending 3 weeks installing flooring, base and case.