I also want to learn about purchasing properties with tax liens / bankruptcies / foreclosures.1.

Your requirements to defer all tax are to purchase at least as much as your net sale. 

You mentioned gross rents of $3400 per month and Principle/Interest/Tax/Insurance of $2500 per month. 

The tax advantages of buying/holding gas stations are pretty great.Many of the components of gas stations including pumps, tanks, external parking areas, and other equipment are classified as either 5 or 15 year property so you can bonus depreciate a lot of it (minus the land value) and get significant deductions in year 1.With the 2025 bonus depreciation rate at 40%, a $1 million gas station acquisition could still lead to $100K+ in year 1 deductions depending on the specifics of your deal.

An other advantage of paying with credit card may be that you will not have to send the provider a 1098 tax form (only an issue if the total yearly amount is over $800). 

House needs some Interior Cosmetic Work, Wood Fence Repairs and some Plumbing Work.I want to turn and run, but I recently heard where there is a Problem, there is Opportunity.I thought this might be an interesting Case Study.Thanks for the Ideas.If they owe $180k on a $210k property and its a year+ behind then they probably owe taxes and other bills as well.

Taxes are the $100, so about $290 a month expenses. $110 a month in cashflow.

It's going to offer Strong economic growth, Appreciation (especially in DFW), Tax advantages (no state income tax), and a Growing population, including infrastructure and amenities. 

Be mindful of short-term capital gains tax, as profits from flips held for less than a year are taxed as ordinary income, and frequent flipping may result in self-employment taxes.While profits from flips do not qualify for 1031 exchanges (since flips are considered inventory, not investment properties), you can minimize your tax burden by deducting allowable expenses like renovation costs, loan interest, and holding expenses.If you're considering diversifying into rentals, explore opportunities to benefit from long-term tax advantages such as depreciation and lower long-term capital gains rates.

If you paid under $230k, you’d save $30k in federal capital gains taxes and maybe another $15k or more in state income taxes.