Here's an article with things to consider when selecting a cost segregation company.

I know a cost segregation study would be too expensive for such a small amount of property, but is it permissible for me to estimate the value of the components on my own?

I love working with their agents and financing team, yes, they are not the cheapest one but I've found good deals with them ( since then I bought more properties) and a good deal it's all you need.

I’m using outsourced support at half the cost of $25 per hour!

Build out the network for GCs in your area and start to bid jobs, then you can build out how much each job would cost.

houston is probably similar pricing to Columbus Ohio but way worse zoning laws. we take 20% on top as a GC and a guaranteed fee agreement. our contracted new construction projects recently:Single family new build spec home: 1513 square feet with 3 beds 2.5 baths 1 car attached $275000 approx $182 a square foot if calculated using heated square feet which means our cost is $145 a square foot. 3 unit / triplex new construction: 2008 square feet 2 bedrooms 1 bath per unit or total 6 bedrooms 3 bathrooms with 3 off street parking spaces. contracted build cost $395,000. no garage on this and better economies of scale with shared roof, slab, etc. $192 a square foot hard cost with our cost running approximately $157 a square foot. 

Cheapest marketing model I’ve put together.

Hey Bigger Pockets community,My family has been in commercial real estate development for years, and one recurring pain point we’ve constantly dealt with is unexpected site costs. 

Nevada #1 in Car Ownership CostsNevadans pay the highest car costs in the U.S. at $6,120 per year, with insurance alone at $3,439.

Its just hard to be good when they're chasing margin and keeping OH costs and personnel costs low.