The first one was 1400 s.f, 95% eff, two level, two returns, $4,200 with Lennox furnace and all materials.  

It's a good starting point from which you can conduct further research.The materials below are free after you create an account.

Rehab cost was right at about $9500 for materials. ( don't buy cabinets and counters from big box stores.

The key is to be able to asses any effective workmanship or materials and accurately estimate the costs to complete.

They need to consider all their costs to include zoning, permitting, materials, labor, and construction management to name a few. 

CGDS training materials

In my mind, this is much more closely associated with maintenance expense, along with construction type/materials, age, deferred maintenance at purchase, and last but not least, THE TENANTS!

I have been looking for a credit card that offers the best points for purchasing stuff at hardware stores. On an average month I will spend thousands of dollars in supplies so If I can pay for vacation without paying ...

Material prices doubled after he signed the contract.     5.  

Material cost is pretty cheap.