You could buy a laser level for around a hundred bucks and check it once a year for movement. 

If the property is not producing enough income, you may find yourself with an asset that costs you money out of pocket every month AND has lost value, and you will sell when the market is low rather than high because you could no longer afford the carrying costs.So, in sum, the best way to protect yourself at this point in the market cycle is to exercise discipline and ignore the sirens who whisper "appreciation" into your ear, and focus like a laser on cash flow.

Stay laser focused on them and they will start to come true!  

With that being said, the foundation and floor joists, main beam are still all in good condition.

I am really excited to begin this journey with my wife and laser focused on making our dreams become a reality.                                                                                                                                                                                                    

Stay laser focused and you're realize your goals much faster than you might except!

If you are unsure if the floor is level, buy a construction level with a laser from the big dollar store, and place on the floor and measure from one corner to the other on a room.

@Raul Salmeron I didn't mean that they stay there while you have big husky men bringing in laminate beams and sheet rock. ;-) They get "quiet enjoyment" while they are renters.

Inside the garage, angles are still tricky, since there are load-bearing beams that have to be avoided when driving in.

Is a 4” x 6” x 12’ structurally as sound as a 4” x 8” x 12’ beam, when used as a load bearing beam?