I am currently working on a deal for two properties with a private seller who will finance them.

You must talk to some hard money lenders (which can range from a private individual with cash to lend, to a quasi-mortgage broker who does HML and bridge loans - the former often being the easiest/quickest/simplest to the work with, the latter often being more like applying for a conventional mortgage), because you have to know the following about your financing options/costs in order to evaluate potential deals:LTV/down payment requirements, and whether they cover just purchase, or both purchase and rehab costs.

Let me see if I can formulate my question -- this is for anybody here that has had any experience with custom home builders that knock down old, small, 1950-era houses and put up 3,500 - 4,000 square foot mini-mansions that go for $800-$900K.I got a seller that has asked me to come look at their house down around 610 in the Heights. 

I'd be happy to talk more over private messages, if you'd prefer, because I'd definitely like to hear more about your experience.

The reason is there are so many aspects of MHP's that no lawyer usually has that breadth AND depth to effectively advise on so many topics.With that said here is my recommendation if you truly need an attorney:Get a generic real estate attorney to help with a purchase contract, if that provides you comfort.Bring in specialists for help if you have specific issues in a certain area you need help (e.g. zoning, grandfather status).I have a custom 15 page MHP-specific contract I use for investor-owned MHP's (this contract is mostly padded with seller disclosures and outs for the buyer if materials facts are omitted - everything from utilities, zoning, and financials), and then for small sellers I use a 3 page TAR form. 

DJM Capital Partners is a private equity investment, development and asset management service company within the commercial real estate sector.I came across bigger pockets through a friend who is using his new-found knowledge to buy and hold in the Philly area.

It was financed through private investors that the developers lined up. 

The next thing I do is make a note of any long lead time items that I may need to get ordered in a timely fashion such as granite and a custom sized door.

I believe she works with hard or private money, but either way she is a pro and can hustle like nobody.

Loan from private investors