That reminds me, Dawn Brenengen did a podcast.

So to that end It just dawned on me this year that I will not longer work on little 2 and 3 lot deals. takes too much time and brain drain.. my minimum now is 10 to 20 units with 30 to 50 being ideal.. the numbers are bigger but all the same things have to be done as doing the little projects but you get more mass and scale.So end of the day budget in the 40k and use that to calculate what you can pay for the dirt share the cost with the seller and sellers agent etc.

Similar to other posters I'm looking into the area, have read Dawn's book and am curious to hear how things are going.

What I recommend is that you find out what approximate costs are for big things like roof repairs; cabinet, and countertop replacements for kitchens; new appliances for a kitchen (dishwasher, fridge, stove); new laminate by square foot, new hard wood by square foot, carpeting, tile; new light fixtures; new door hardware, plumbing hardware; new doors, for front doors and interior doors; interior and exterior paint, by square foot usually I believe; retiling a shower, new sink, new toilet; new HVAC; new windows (per window);Then take all of this info (and don't forget to include the installation/labor costs, because a buyer won't be happy and will lower his/her opinion of your business and abilities if you don't include actual costs.

Some issues I've realized (nothing major):1) Dishwasher.

Thanks Dawn.

Washer/dryer, dishwasher, stove, and refrigerator. 

@Dawn Anastasi that would be ideal! 

They even found one in a prime location which was abandoned by the owner at the dawn of World War II.

Install all new kitchen: cabs (very small amt cabs), appliances, (no dishwasher), above stove microwave, new garbage disposal, Fridge with ice maker hook up, electric stove, sink/faucet. 13.