It is recommended you give 24hr notice which is standard.I would leave written notice on the tenants door, it is usually permitted to enter without notice to give notice, and simply state you or a contractor will be there between certain hours or there for the day of.Good tenants are generally very willing to work with landlords on this issue where as tenants with landlord issues need to be treated with kid gloves until you get rid of them.

I know that building codes and permitting requirements vary by jurisdiction, but do you need a license of any kind to apply for a residential building permit?

Then with closing and carrying costs and how long that rehab would take with permits and contractors, I do not think this is a good deal.

We had to get the elevation certificate in the planning and permitting phase.

Why would I need to be approved by the park as long as all state laws are followed regarding the carriers licensing, permit and insurance requirements are in place?

Tenants are not permitted to call any repair people themselves; they must call my contractor or myself.

The attorney will need to read the agreement between the investors.Even if the agreement permits this partner to place new liens on the property, which it likely doesn’t with out collective permission, the other 5 investors have a legitimate civil suit.

Don't forget any permit fees and taxes you are not allowed to pass on to renters. 

However, I'm interested in targeting Texas markets in the next year if my resources permit it.I use to live in the San Angelo region over a decade ago while assigned to the Goodfellow AFB nearby. 

Copper wire , breaker panel , permits arent cheap materials are close to the 50% he wants .