I opted for added a $200 non-refundable deposit. 

I do intend to stay close to home - but home provides only annual opportunities and I’m looking for year round possibilities with tax deed properties. 

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).

The use of the accelerated depreciation strategy helps real estate investors to reduce the tax liability immediately which therefore increases their bottom line due to the offsetting of income.

The contributions are lower so it takes a while to build, but once you do, it's tax-free investing. 

Then rent the bigger home out using a property manager, allowing her to possibly cash flow and maintain that asset and let it continue to grow in value.Encourage her to consult with a CPA or tax attorney to explore the best strategy tailored to her situation.

High taxes.

The first is that there's no consensus between tax professionals, and the second is that you will not like my personal interpretation.My interpretation is:Until the property is "placed in service" - everything goes into basis.Illustration.You buy a property July 1st.You finish rehab November 1st and put the property on the market.Your tenant moves in January 15th.The property was placed in service November 1st, and it does not matter that the tenant did not move in until the next year.Everything paid between July 1st and November 1st, including interest and utilities, goes into basis.

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

Zero capital gain tax, next to zero income tax, property Tax is super small.