Which neighborhood or zip code to look at or avoid?  

I'm currently building my team with Tax Advisor/CPA, RE Attorney, REI friendly agent and designer first on the list in that order.

The promise of accelerated depreciation and immediate tax savings is attractive.

If not, what are property tax sales? 

Tax Breaks- I am not an accountant, but I recommend conversing with one to see all of the benefits to owning a rental property.

Estate Planning and Wealth Transfer: If you're building a portfolio to pass down to your family, life insurance ensured your heirs inherit your properties without the burden of estate taxes or forced sales to cover expenses. 3.

For example, using 70-80% leverage could preserve your cash for more deals while maintaining strong returns.A blended approach might work: pay cash for smaller deals to avoid delays and borrow on more significant properties to spread risk.

The other watchout is if you lose your job you are required to pay the money back quickly, like 30-90 days with most 401K's or the loan gets converted to a withdrawal that comes with tax implications and penalties. 

Forming an LLC for your rental property can offer liability protection, but no real tax benefit.

Almost every action taken in the economy is taxed and the faster the economy chugs forward the more taxes they collect.