1. Removal
Replacing old concrete adds demolition, sawcutting, machine time, loading, haul-off, and disposal. A new slab on a clear site has a different starting point.
2. Base preparation and grade
Excavation depth, soft areas, imported base material, compaction, elevation changes, and drainage work can change the scope before any concrete is ordered.
3. Thickness and reinforcement
A light-duty walkway and a vehicle or equipment slab should not be priced as if they are the same thing. Thickness, rebar, wire, edge design, and structural requirements matter.
4. Access
A wide-open driveway can be easier to reach than a backyard slab behind a narrow gate. Pumping, extra labor, long wheelbarrow routes, or smaller equipment can change the job.
5. Finish
Standard broom finishes are different from stamped concrete, color, decorative borders, detailed edges, or polished surfaces. Finishing labor happens while the concrete is live, so complexity matters.
6. Project size and shape
Large simple rectangles can be more efficient than small projects with curves, steps, tight forms, multiple elevations, or many separate sections.
7. Permits and inspections
Some concrete work can require city approval, right-of-way coordination, building permits, or inspections depending on the project. Foundation and structural work has different requirements from a simple backyard pad.
How to get a more useful estimate
- Send rough length and width.
- Say whether old concrete needs to be removed.
- Share photos of access and the existing area.
- Explain what the slab will support.
- Mention drainage or standing water.
- Say whether you want plain broom finish or decorative work.