In Florida, for example, if you were doing what you describe you should be collecting taxes and sending them to the county and state. 

Then I pay taxes on rental income.

Found a house with the tax deed up for sale.

All that matters is that if you want to defer all tax you purchase at least as much as you sell and use all of the proceeds in the next purchase or purchases.  

Even so, I'd be hesitant to buy one of those Downtown without putting serious consideration into the upcoming tax reval, which could cause property taxes to soar for owners in this part of the city.However, not all hope is lost if you're willing to entertain options elsewhere in Jersey City.

Watch out for high taxes in this zip code.

Taxes are HIGH and the cheap properties are literally run down to the point where a rehab would bring you way over without capital.

The way I understand it if you borrow money with your IRA as a down payment  you may be responsible for some income taxes.

I use Turbo Tax.

Another downside is you loose on the advantages, of the Federal Tax Code, by not closing in the name of a LLC.