Any deductions should be the same for existing resales vs new construction. 

And, factor in the depreciation and other tax benefits, deductions, home office, vehicle expenses, etc. 

You will also be less likely to miss opportunities for tax deductions, etc, because you’ve been tracking all along rather than pulling everything together at the end of the year.

I understand I wouldn't get the benefit of tax deductions, but what else am I missing that makes this a good deal? 

Additionally, the study must be completed by “qualified individuals” and “professional firms” that are competent in construction, design, auditing and estimation procedures for building construction.So while a specific methodology isn’t required by the IRS, taxpayers must ensure that their depreciation deductions and classifications of property are substantiated with supporting evidence.

However, if distributions are still ongoing or the final resolution is unclear, you may need to wait until 2025 or later when the loss is definitively established.Under IRC Section 165, worthless securities can be written off as a capital loss, but partial losses typically aren’t deductible until the investment is fully settled.

Plus, we haven't even talked about the tax deductibles, depreciation, and how the house hack has the potential to off-set your taxes, which is another aspect way of making cashflow (obvioulsy verify with a CPA).

The above rate will either be NNN or you need to estimate insurance, property tax and utilities and deduct.  

Use tax benefits like depreciation, repair deductions, and tax-free refinance proceeds to offset income, and consider an LLC for liability protection.

With a fideicomiso, the gross income is taxed through a withholding tax whereas, with the corporation, the rate, you can deduct expenses but the taxation rate is higher.