I’ve been with the same insurance company for 5 years and never had a claim and likely won’t make a claim unless I sustain a large amount of damage somewhere.

The vast amount of damage is normal wear and tear.

In general, when the landlord's property causes damage to tenant's property, the landlord is liable, unless there is proof that the cause of the water leak was the tenant (unlikely I presume).

@Malick NgomGet an attorney to send a certified letter requiring signature and include the satisfactionIn most states a lender can be held liable for damages for not recording the satisfaction

I found information S2A modular however they don't look reputable. 

It's hard enough when a tenant damages my rental and it happens. 

This is not even considering any damage that could be done to the property during the ownership of the buyer. 

I also don't think it's common to convince the appraisal district that your property did not appreciate at all, unless you can back it up with pictures that your property was damaged or is in worse shape that it was the year before.

Early on in my investing journey I experienced a ton of water damage because of water leaks in places that often goes unnoticed under sinks, in utility closets etc.I was curious if anyone else here has considered any remote monitoring water leak systems?

If the buyer did not close or fulfill the obligation then seller could potentially sue for damages - see this more often in wholesale deals.