Buying a Multifamily or home in a C, D, area should come with a lot of equity as it is the only reason to get into any deal for these areas as you don't want to spend more than upfront out-of-pocket cost.Look up Cap rate, Cap Expense, Insurance Expense, Vacancy Expense, Tax Expense (which should include a licensed pro at some point), Real Expenses in relation to owning Multifamily real estate, and other things you don't what to be surprised about before doing your first deal. 

We were told that local legislation prohibits draining into septic system or into street gutter and the only legal draining was into own's household sink drainage system.

If I need to spend 6 months on this I am losing 20K almost for nothing.

look at your experience level with reality in mind.I would want to feel very comfortable about those things before spending time on deals and money when i had no real capacity to transact no matter who the lender was.

Bigger Pocket is a very good platform to find people to help you. if you have half a million lying around, then I would say spend some money for these courses. 

I have an opportunity to build mixed use apartment and I want to get an expert thoughts on the projections and what should I be spending on construction to make this project profitable.

You should only consider switching when your current software has a significant flaw or lacks features that force you to spend excessive time on workarounds.

Unfortunately increase consumer spending and business expansion really rests on the upcoming election.

It's updated yearly and is the best $40 you'll spend as a Landlord.

The main stack, drain lines in the basement floor, trap and the sewer line to the city main are the big ones.You can either knock these out as they become problems or bite the bullet and spend the money.