Anyone have any recommendations on leak detection devices for their rental properties?

Also giving a tactic re rental prices to detect dead markets. 

House value is about $150000 and mortgage is for $140000, doubt a investor would take it off my hands for $140000 but that’s why I’m asking.I had a leak detection company into detect if it was aunder the slab pipe leaking but they did not find anything, I do not know if it’s flashing around the chimney or the fact that there are no gutters causing water to come in behind siding or flood over the foundation.The dishwasher was leaking a ton of water so it could just be that not sure tho.My question is, is there a way to walk away from the house without having to ruin my credit I have an excellent credit score, I don’t know if an investor will be able to take it off my hands or is there a way to give it back to the mortgage company without destroying credit?

You may have to do some detective work and then provide it to the police.

@Paul Sandhu I was representing the buyer of a duplex - who happened to be a police detective.

A city technician confirmed it.Does anyone have a recommended leak detection service, preferably not affiliated with a repair/plumbing service in the Dallas area?

I’m pretty sure the common areas need different fire detection requirements.  

I had a tenant commit suicide and the detectives were not helpful.

He should be able to detect if they are already in our walls is what I am told but not sure about the electrical outlets? 

As a landlord, your ability to detect false service animals and false emotional support animals is important, but hard.