Even then, they should be facing out to detect intruders, not used to spy on tenants.WiFi locks require a WiFi system.

I can’t tell you the exact price per sf, but generally, I’d pay about 10-20k for just drywall, carpet, doors etc in an unfinished basement, if you have any minor  foundation issues/leak that’s probably another 5-10k adding a bathroom is probably in the 8-10k range maybe a little more if you have no drain stack in the basement, digging down can easily be 50-100k 

If the latter, and it is a common roof, over some shared walls, what happens when your neighbor doesn't have the money to keep their roof in good condition, and the leaks work their way to your property.  

@Efrem Debesay  Metal roofs do not seem to be as common in the city but, they do last longer and are less likely to have any leaks with one.

I have just been notified that there is extensive damage (an unteported leak caused by one of the tenants bidets) and an unauthorized pet in my rental home that may have also caused damage.

I don't know, but I'm guessing perhaps there was a leak/flood and the subfloor rotted, and/or pet urine that soaked into the subfloor, and/or mold issues? 

At $30-50/month it ends up breaking even but I have someone to call instead of the plumber that charged me $200 to show up and was charging $300 more to turn off the water to my house when I had a leak.

We also used some contractors that I may not use again, as there is some leaking that we've had to deal with.

Besides the 8.5 million encounters, there are those who entered the U.S. illegally with the express intent of avoiding detection.

He says it can't be a leaking duct in basement  because then we'd get no heat on main level.