They'd get so mad, that it made me think there was a strategy to get us to eat the costs.

What was the cost? 

When you have a big cost segregation depreciation plus your big startup expenses such as furniture and supplies, and you then have a big tax deduction against your big W-2 income because your passive losses are no longer limited with your big material participation, it increases your audit risk a ton.

@Joseph Stammeyer, the program costs just under $10k and they will fund all of your fix & flip deals, including the rehab.

Tax Benefits While Building- Create an LLC and pay start up costs through the LLC (architect fees, permit fees, etc.).

Partner Driven financed the Watering Place deal using its own capital, covering the $350,000 purchase price and $1,500 in minor renovation costs.

Development costs will often be the biggest hurdle, meaning: sell the land you have and buy an existing park, campground, rv park and "upgrade"/ convert the sites to tiny home compatible. - and you'd be ahead.

You may have to balance spending money on things today that you may not really need until later - but, they may cost a LOT more to change later.

Build a portfolio of cash flow producing single-family homes in a high-cost market with high barriers to entry. 

The Book on Estimating Rehab CostsThese books will talk about the ins and outs of finding contractors and other members of your rehab team, scheduling any many of the other aspects involved in the processes or Rehabbing and BRRRRing,