Most good concrete companies will have their own equipment to grade and dig the site for prep work.

@Bryson Williams look up the rules for your state, in Virginia, if you own the property you can pull your own building permits and do your own work, this includes the mechanicals .

Sounds like you are making up your own definitions here, and are not going off of those listed above 

I Own 15 Residential Lots & Looking to Get Started (Hot Springs Village, Arkansas).

I have 125k cash and own some land outright worth ~100k. 

As well as most folks are far to paranoid about litigation and liability when they are starting out. owning a SFR rental with proper insurance is about as safe as it gets with regard to liability as long as your not being a slumlord.

I own the land outright and have $20k in cash to invest.

To look at a property I do not own , and give me a free detailed estimate on rehab costs ?

Hi I have my own business and getting my first Airbnb in CA.

I currently own two STR's and manage his STR.