There’s a difference in terminology if you want to get technical of taking over a mortgage and taking over the payments of the mortgage.

@Maria Moyahello and welcome.just to ask about a different aspect of your post - why all the moves? 

It may look very different.

How long it takes to be financially ready is different for everyone.

I noticed a difference in neighborhoods and wondered if a map for neighborhood classes ABCD was available.

Also, you can always cashout refi them AFTER retirement and get that money tax-free (until you sell or transfer via inheritance).Recommend you read The Millionaire Real Estate Investor, which shares the plans of several different investors.

But the official position of the IRS is different. 

So not sure if this makes any differences for tax reason buti was thinking of using my 401k money as a loan towards the down payment for a multifamily rental.

Depending on your tax situation the timing of that deduction could make a big difference especially for rental property because there's no phaseout on deductions like there is for itemized deductions for your primary residence.

I think you’d be surprised what a difference having a hot tub could make to getting more bookings and a little extra revenue.