Can anyone verify the tax treatment as of today that a gain from owner occupant unit is applicable for Sec 121 exclusion, and a gain from rental unit is applicable for 1031 exchange?

Hi Elwin, I have access to a few HELOC options for investment properties.

This allows for a wide variety of ways to achieve the goal thru all aspects of real estate; investing in assets that have great capital gains potential but may not cash flow (options, land, redevelopment, gentrification, etc. ) utilizing “fee income” to build my estate (syndication, brokerage, partials, participations), and “creating” high yielding notes, and “creating” wealth through creative real estate buying, selling and exchanging. 

There's no one MTR site so tools like Airdna don't have access to the data to pull vacancy rates. 2.

Rate will be lower with a higher down payment, so you'll cash flow more, but look at what you're saving by using that as a down payment vs. what you'd gain by putting less down and and using that towards the next property. 

Some savvy flipper reconfigured the upstairs to add a bedroom but in the process, closed off most of the attic, leaving only a crawl space that did not even allow access to the entire attic!  

But it will be complicated by different factors such as flood zone, topology, conservation area, easements, access to roads and more.Zoning - check the code and check site zoning.

Once I’ve gained rental income, I would like to finance a Condo and even more rental properties with my income from rentals.

You cannot (legally) exclude your capital gain when you sell your NJ house next year. 

You need to be talking with a broker who has access to a bunch of lenders vs a lender who only has a couple of DSCR outlets.