It depends a lot on how high between your peaks and valleys if is more than say 1/2", most leveling materials are not design to fill in that much.

I have some thoughts on a potential design but thought it might be helpful to get a recommendation from a professional as well (probably designer maybe architect).

Could you please pass along any suggestions for architects or designers?

Burlington VT requires rental property owners who want to manage their own property but don't live in Chittenden County to designate a local property manager, emergency contact, and person to receive service of process (can all be done by 1 person). 

Eventually being able to manage the design of ground-up residential & commercial new-construction projects.

So when it comes to permissible interior work it maybe a good idea to check w/the DOB’s website.

The apt does not have its own entrance from the exterior; it must be accessed from the interior of the home via a basement door and stairs off of the living / kitchen area.* The main home is 2900 sq ft (3 bed/ 2.5 bath) and has 2-floors.

FHA will not insure a Mortgage if it is determined that the transaction was designed to use FHA mortgage insurance as a vehicle for obtaining Investment Properties, even if the Property to be insured will be the only one owned using FHA mortgage insuranceI know a lot of people use FHA for multi-family but is it always the first loan they take out? 

Purchase price: $112,000 Cash invested: $50,000 Sale price: $215,000 Seller financing on a full interior gut and repair What made you interested in investing in this type of deal?

There are many options, just make sure they are designed with routine condenser maintenance in mind.