Walls contain wires, pipes, and sometimes things you wish you had left buried. 

With one of my purchases I purchased old paperwork that contained original grant and warranty deeds along with the assessors property paid taxes receipts of the property.

The property dose not change hands, the ownership of the entity changes hands--containing the asset within.Example 1You might be aware that under some conditions when you buy a house it comes with title restrictions: e.g., you're not permitted to transfer title for 90 days or whatever. 

There’s another rule if the list contains very cheap properties (200% rule) but try really hard to live with 3, it’s easier. 

The information contained in this post is not to be relied upon.

I could try out a remote controlled kit with ceramic logs.

The information contained in this post is not to be relied upon. 

They are very informative, and contain ample information. https://www.biggerpockets.com/blogs/

How many beans are in this container... 

Builders, architects, engineers, contractors, etc. have to file public plans and permits that contain all their info - I'm sure a visit to your town's building department will be sufficient.