HELOC bank doesn't want their line used as a term loan on real estate they don't have collateralized and the bank that you apply for a loan for doesn't want your down payment to be borrowed.If you wanted to get the HELOC for home improvements then decide to draw on it for liquidity, had it sit in a bank account for a couple months and then applied for a MF loan and used it as the down payment, you'd have to answer no to the question, "is any part of the down payment borrowed".

If I was interested in purchasing a seller financed home with the total price of say $700,000, could the loan be structured to pay off say $150,000 to the seller over a 4-year period with the remaining due after that period?

Whether you're looking for single-family homes, multifamily properties, or commercial spaces, Philadelphia's real estate market has something to offer for investors focused on building equity and cash flow over the long term. 

Does anyone have a good lender/contact for a commercially zoned tourism home?

With things like the ONE Linden plan in Linden, which is a 50M plan to improve the neighborhood.

Hello, I am a software developer and I have a data science friend who we want to team up on making software in the real estate niche.Tell me, as a real estate professional, please dream of your ideal software. what kind of software or software feature do you wish you had or wish that can be improved upon.

Currently, we own a home in West Seattle and have approximately $200K in equity.

Wouldn't it have to be a leasehold improvement which has its own tax treatment?

If he needs to make improvements to increase value, is one reason.

Also you need a good GC that has competitive pricing and that has actually built homes before.