Real world is high impact and low energy use with very basic techniques at a high level to inflict the most damage.

During the renovation, my GC pointed out a few spots where there were termites swarming/old termite damage.

Here's a non-exhaustive list of some of the projects that we had to do to it.replace water main from the street to the housereplace all water lines in the housetear out all carpetPaint the interior (will be painting the exterior or residing in the spring)put in new laminate/vinyl floors throughout the houserepair dishwasher and oveninstall gutters on back of house and fix some water damaged areas of the wallreplace some of the rotted subfloor in the bathroom/laundry roomrepair the furnacereplace back doorchange door knobs and locksvarious other small repairs… patch holes, outlet covers, etc…Purchase price = $12,500Closing Costs = $1050Rehab (still an estimate, but it's close) = $13,500Total Cost = about $27,050Rent = $750/moHere are some before pics 

Cooking, Reading, Listening to music, Relaxing on the beach, designing homes and restoring old furniture.Cheers!

General cleaning or damage deposits can be charged, if all residents are similarly charged.Please remember that a housing provider can hold a resident with an assistance animal liable for any damage the animal causes.Can a housing provider limit the number of assistance animals?

Obviously the previous tenant or home owner are in a fragile state and using force can actually cost you more money in the long run if they decided to damage the house.Now, the story with the buyer.

It's some 14 year old kid in the Ukraine who would do the most damage to our identity.

You might also consider contacting a company like ALE Solutions who help people with temporary housing when they've been displaced due to a covered property damage insurance claim.

Better terms to use might be "fee" or "charge" as they are already understood to be non-refundable.As for what to charge, it might be a good idea to analyse the property and decide what would most likely be damaged by the pet and make the deposit dependent on the repair/replacement cost for that. 

Violation incurs not only penalties under the Property Code (return of all payments made by the buyer including monthly payments) but potential liability under the dreaded Deceptive Trade Practices – Consumer Protection Act ("DTPA") which can involve treble damages plus attorney’s fees.