This is obviously much better than $1,400 per month.On top of that, you will now get 2x the depreciation write-off so your taxes should go down.On top of that, you will now get 2x the appreciation when real estate price go up.On top of that, your tenants are helping you pay down the loan, initially at about $100/mo for both properties, which gradually gets better and better.On top of that, you now have more units so if one or two goes vacant, you have more renters covering the losses of the vacant units.If you want to keep these properties, I would do a cash-out refi and go buy more rental real estate.

For tax purposes, you really just need to have everything aligned to the schedule E categories. 

He was a good guy” and his information  on buying at tax or foreclosure sales was realistic and doable. 

I also wanted to benefit from tax saving before the years end with a new property purchase.

I mainly want to ask if these assumptions are reasonable and if there's anything I haven't considered:(1) multifamily units in NJ close to New York City, ~$1,000,000, 20% down payment, (2) Using the following assumptions: 4% appreciation rate, 6.5% interest rate and 5.0% refinance after 5 years, $10,000 yearly maintenance fee(3) ~$6,000 monthly rental and assume 3% increase yearly with 5% vacancy rate(4) Based on the above, the calculated IRR if selling at the 10th year is ~19% (considering tax benefits) and ~17% (without tax benefits).

It is DSCR based and no personal tax returns are required to qualify.

To succeed, focus on properties in high-demand neighborhoods like Pecan Grove or Aliana, and ensure your cash flow analysis accounts for high property taxes, potential HOA restrictions, and flood insurance costs.

I use my license for multiple activities: Of course- comps, when buying and when selling, tax data- to see what I am about to pay when i own the home ( for long term holdings), check the DOM (days on the market) for the subdivision I am either buying on, or when I plan on selling, etc. 

Also, you will have additional occupancy tax depending whether you are in the city limits or not.

And you would get to indefinitely defer all tax on the gain from the sale.