Greg I would assume you will retain some or all of the existing building/buildings?

So at least they know the structure exist but do not count as bedrooms.My idea is to buy the property cash and renovate to then cash out but I would need the expertise of appraisers and lenders to make sure I don't get stuck and can effectively cash out.Question for Appraisers: How do you appraise these features?

There's a controlled, pre-existing relationship (likely of a sexual character - but I don't know you and I'm not assuming) between the agent selling the property and the inspector who assesses its quality. 

Are there forums that exist to connect Maine investors?

Purchase a property and add an ADU or based on zoning, add 1 or more units to an existing multifamily property.

To use a HELOC to pay off a hard money loan can also be a good move.To use a HELOC to pay off an existing mortgage rarely makes sense as you are just trading one loan for another and usually its HELOCS that carry a higher rate (and are variable) than a traditional mortgage.

It will be an existing relationship, so a new LLC would be best in my opinion.

They are not real common, but they exist. 

The project is almost halfway done...but may need some minor improvement to the existing condition.Basically, the framing, electric, HVAC extensions, and plumbing are mostly done.

Work with the Golf Course to create some lease packages with course membership/Passes.Get in touch with Lonnie dealers through BP and MobileHomeParks.com to help bring in tenets.I envision working with the existing and future tenets to seller finance the park owned properties, in order to move away from fixing toilets and replacing water heaters.