Plumbing, GFCI outlets, tile backsplash, etc.? 

Upgrading fixtures, adding modern tile, and improving lighting can make a big impact.

I started tiling all tub surrounds all the way to ceilings.  

Even their sales prices didnt seem worth it About ten years ago I would buy my flooring for my rentals from LL and I found it held up well (its still installed).

., structuring it as an installment plan if needed).If you can’t find an individual investor, you might look for a property management company or real estate investor group that specializes in STRs.

We have installed a permitted tiny house on the land, water meter. electric meter (that can accommodate a large house), and a 5 bedroom septic.

The appliances are also all brand new installed this year- fridge, dishwasher, and washer/dryer.

If a sale and capital gains the only option, you could look at seeing if he was interested in selling you all his portfolio on an installment sale and then 1031 exchange the proceeds into a private real estate fund. 

He earned quick money as a wholesaler, and I have a house to keep)Rehab cost: $20k (vinyl floor, interior paint, new dual pane windows, new toilets and bathroom vanities, lights, new landscape, new AC condenser, all done by handyman, spent some extra money for minor plumbing and electric jobs, hydro jet sewer lines, clean up attic (had mice), added some insulationTime spent: 3 weeks (two handymen for the first two weeks, one for the last week)Value after repair: probably around $440kJobs still need to be done later: some dryrots, roof work (it's tile roof, roof doctor quoted me $9k, handyman said probably $5k, home inspector said $15k you can get a new shingle roof.

You cannot charge one dime more nor a "pet fee" because service animals are NOT pets.If the applicant wants special features such as a wheel chair ramp, etc they MUST install that at THEIR expense and you can require them to bring the property back to its original configuration at the end of the lease at THEIR expense.