The buyer did his inspection and backed out because the previous tenant had a dog that urinated on the walls and some of the baseboards that were made of compressed sawdust had bubbles.

Unless she's doing something that will wreck the property (a hoarder-house situation, cat urine, etc.), why worry?

I love the smell of cat urine in a house for sale. 

The odor of cat urine remains.

You can buy properties for below their current value, or you can buy a cheap cat urine soaked, leaky roof, dirty, dated old house and fix it up!!

There is not an option to knock it down and build a new one, I plan on ripping everything out but I’m not sure if the cat urine went behind plywood or anywhere else other than what I can see.

I've had people try and tell me their child scratched the flooring or caused the urine stains/odor instead of their dog, trying to say it's "normal wear and tear." 

There was a slight dog odor (not urine), but cleaning the carpets fixed that.

Hi BP community, I am a California-based investor looking to execute a fix-and-flip in Virginia and a hurtle I want to tackle is to form a strategy for competing with local investors. 

Also look carefully for any area where the animal may have been kept during the day which may have flooring/trim that has been saturated in urine.