Luckily the flooring was pretty level and secure and this did not pose as a problem.We moved around the closets in the extended room so we could completely close off the passthrough.

The thing is wasps are quite common in Denver and when leasing the property I specifically elected not to pay for any sort of regular Pest control for insects and bugs, such as Orkin, etc. 

Our realtor estimated that after the work it should be appraised for around $190k, in which case we plan on refinancing so that we can put the money from the heloc into our regular monthly mortgage and free up her heloc since she does real estate investing as well.Now the house is divided into two sections.

It should not be a problem to sell except that you might have to bring money to closing to cover the costs of sale of about 6% or about $6,000 for each $100,000 plus regular escrow and title costs.

Now still have 64K left which planning on using to secure 2 to 3 additional properties. 

Your yard is in terrible shape and in need of care on a regular basis.

With increased security checks and immigration issues in the United States, what do I need to tell the border officers when I cross the border (by car)? 

Here's one of the longer ones where some of our regular CPA posters answer this very question: THE Thread on the Final GOP Tax Bill - Q&AWith that being said, if you really want to pay extra taxes, I'm sure the government will be happy to accept it

This way, 1) if they are not caring after their pets the way they are supposed to - you charge them for the damages in real time versus at the end of their lease term (hoping there's enough in the security deposit) and 2) you're not surprised when they finally do turn over keys.Good luck! 

Like others have mentioned, mobile homes are low income housing and as long as people live on welfare, minimum wage, social security, etc.