The entire building process is fast and efficient.

For the purpose of my project, I am looking to borrow $70k to purchase the property, fully fund the rehab ($12.5k) with personal cash, rent it out and cash-out refinance 75% LTV (ARV of $115k) after the 6 month seasoning period.

Remember there is a look back period for any benefits received from the government.

I have built a real estate portfolio and real estate management/rehab company from scratch in a 4 year period.

Many tax deed states have right of redemption periods, which means you may be holding that property for 6 months to a few years before you can really benefit from it.

There is a retention pond nearby that is no longer draining out efficiently and has become more concerning with very heavy rain.

Also, on these kinds of loans, will lenders require that I season the rental for a period of time before I can take out the loan?

I see 3 options and I don't know how to price any of them...Remove the whole thing, it was in poor shapeTurn it into paid storage, I couldn't access the interior and don't know if there was any plumbing in placeTurn it into an efficiency and make the whole property 3 unitsHVAC5 radiators x $200Window unitsWater heaters - rusted and brokenTank vs Tankless - $600-$3,000All of the interior doors on one side was missing. 

The attorney is correct that you should file notice and start the eviction process, period.

I realized that during the initial rental period (12 months before refinancing) that property would be cashflowing negatively ($152/month).