That is, how well did your deal analyzer estimates match the actual rehab costs, holding costs, ARV, and profit?

Costing them thousands and making them lose out on homes.

*Energy Efficiency – Given the hot climate, buyers in Phoenix look out for energy-efficient upgrades like new windows, insulation and solar panels.ABSOLVING COSTS & POTENTIAL PROFITSBefore you put down your money for a fix-and-flip, it’s important to run the numbers on all the costs, including:*Purchase Price — The amount of money paid to acquire the property.

It may cost 2 million dollars.

Did you investigate the history of heating costs before purchase?

To be brutally honest i don't care if it's at cost, below or above, I only care what it is exactly and how much. 

However, the cost-effectiveness of such a mandate is highly questionable, and the resources required for compliance may be better spent elsewhere.

Quote from @Simon Walker: Quote from @Brandon Croucier: Opportunity cost is a serious expense, if they are moving slow, they are COSTING you more money than what a hard money lender might able to make you.

when you purchase a property, there are closing costs on top of the purchase price, and closing costs can be substantial - especially if there are points on the loan. 

•Not necessarily, but renters might hesitate if flood insurance is high and that cost is factored into rent.