That's all assuming you can get a successful judgement against him.Honestly if he's a creep and not communicating, that may work in your favor. 

Did you receive a judgement in your favor?

Motivated sellers sometimes tend to “forget” about a lien or a judgement or two, so it’s always wise to do both a tital search and setup an escrow company to facilitate the payments directly to the mortgage company if there is one.

I am asking from a landlord perspective for damages exceeding the amount of collected security deposit where there is a low likelihood of collection directly from the tenant through a judgement.

The rub is, once there is a judgement, the case is removed - forever hidden from future landlords doing their due diligence. 

I would put your potentials on a spreadsheet and map out expected revenue - expenses to make a judgement call.

I would like to find an attorney or a collection firm that can assist me with getting a judgement against the borrower(s).

If he gets a judgement against him for any reason, a lien could and most likely would be attached to 'your' property.There is also legacy risk. 

@Erik PedersenForeclosure process: notice of default -> trustee sale or foreclosure judgement for mortgages -> auction.

@Tobias StollThere is a judgement against the house for the water liens, but it didn't sound like they were going to foreclose.