What this foundation estimate includes
The model covers broad allowances for excavation, strip footings, poured walls, slab, reinforcing steel, permits, and contingency. Optional perimeter drainage is priced from the calculated perimeter.
Concrete = walls + slab + footings + 8% waste allowance
Important limitations
This calculator assumes a simple rectangle and typical continuous footings. It does not engineer wall thickness, reinforcement, bearing, lateral soil pressure, frost protection, beams, columns, underpinning, rock removal, shoring, or dewatering.
Frequently asked questions
How much waste is included for concrete?
The quantity adds 8% for normal ordering and placement variation.
Does this replace a structural design?
No. A qualified local professional must specify foundation dimensions and reinforcement.