Nobody bids a job by labor, it's usually by the sq ft. 10+ bucks a sq ft for demo and rebuild is reasonable. Material costs seem low and don't include loader, dump truck and dump costs.
Business costs are 10 to 15% of gross.
Concrete costs less than decks, if I have to demo an existing slab and replace it starts at 7 bucks a sq, depending on variables.
Kent
