You will have a difficult time selling the park with the house attached down the road even after you fill it up and improve the CAP.And a second word of caution since I am sitting here spewing advice... those two vacant TOH homes depending on condition and the 6 vacant spaces should have zero value in establishing the park's value. 

Hi BP Community,

I’m posting to seek your recommendations and insights on a few topics that I’m currently exploring:
SDIRA CustodiansCPA specialized in REI and W2 IncomeInvestments beyond the first few single-fami...

Until you establish a relationship with a GC, it may be hard for them to come give you an estimate every time you want to estimate a deal. 

This would avoid that $800 fee.As always best to contact a trust attorney and tax advisor for your specific situation.Good Investing...

Establish a clear process for handling these requests and keep an emergency fund for unexpected repairs.Tenant Relations: Communication is key.

Regarding your tax benefits question, certainly something to discuss with your tax advisor, but here's a few thoughts. 

It's important to consult with a tax advisor or real estate attorney for personalized advice, as this is a complex area.

Having a pre-approval or at least an established relationship with a lender shows sellers that you're serious and can close quickly, which can make your offer more attractive.

Infill lots in established communities usually have a reason tied to them why they haven’t been built on yet.

You shouldn't do the PMs job, you are paying them, but as the first time working together I would use it as an opportunity to learn and establish the relationship.