The property was drastically overgrown with vegetation, the backyard looked like Vietnam!

However, and I never thought of this, but the feed and leftover vegetable scraps from their garden they leave for the chickens has attracted a HUGE colony of voles (half mole half mouse).

Sell the feature of having a sandlot volleyball court.Tell them it's ready to be tilled for their vegetable garden.Tell them pets are okay outside.Tell them the neighbor stole your sod, a simple furniture arrangement and they can look next door. 

@Andrea Stewart One of my life goals is to have a garden where I can get fresh vegetables from!

this should soften it. use a plastic spackle knife not a metal one (scratches....) to scrape it.now the next one is to find out what can dissolve the glue/adhesive....try water, mineral spirits, goo-gone, vegetable oil... unless you want to sand/refinish the floors. than you can go gorilla on it with a big scrapper

What crack head vegetable brained loan officer(s) have you been talking to? 

One was fixed up, the other was missing a part of the roof to the point where vegetation could be seen growing through the roof.

That's where dumb loan officers go to vegetate; no one serious works there.

i've never heard anyone say "i dont want a patio where i can invite friends over. instead, plant some vegetation around to give me more shade". do you know what i like to do to trees?

(That's 5 large Dump Truck loads) If any amount of grading or removal of vegetation is proposed within a Critical Area."