Shed pad, garage floor, RV parking, hot tub base - the slab is the simplest thing concrete does, and the pricing still confuses people. Here is what slabs cost in 2026 and what actually decides the number.
The short answer
National 2026 guides put a standard 4-inch residential slab at roughly $6 to $12 per square foot installed, with the national average near $8 - and coastal states like California trending toward the upper part of published ranges on labor alone. By project, the guides cluster like this:
| Project | Typical size | Published 2026 range |
|---|---|---|
| Shed pad | ~100 sq ft | $600 - $1,500 |
| Backyard patio slab | ~400 sq ft | $2,400 - $4,800 |
| Two-car garage floor | 480 - 576 sq ft | $2,900 - $6,900 |
| RV pad | 200 - 700 sq ft | $1,200 - $8,400 |
Ranges are national and hedge-worthy; your site writes the real quote.
The three specs that move the price
Thickness. Four inches for foot traffic, five to six for vehicles. Each added inch costs roughly a dollar per square foot in material, guides note - cheap insurance under anything heavy.
Reinforcement. Fiber in the mix costs almost nothing and controls shrinkage cracks. Wire mesh is the paper middle ground. Rebar grids - typically well under two dollars per square foot added - are the standard we recommend under vehicles. Modern trucks and SUVs are heavy, and the reinforcement is the difference between a 10-year slab and a 50-year one.
Base and access. Grading, compacted gravel base and haul-off can add a dollar or more per square foot before any concrete arrives, and sites the truck cannot reach need pumping or buggying. Long, narrow pours carry that setup cost over fewer square feet, which is why sidewalk and front-walk work in Orangevale is quoted per linear foot as often as per square foot. The base line-item is where cheap bids hide their savings - and where slabs fail first on our clay.
Sacramento-area notes
Two local realities affect slab pricing here. Ready-mix runs higher in California than most of the country, which nudges every project up against national ranges. And the region’s clay and hardpan make base preparation genuinely matter: a slab poured on poorly compacted or wet clay moves with it. On lots with winter water, pairing the pad with drainage - sometimes a French drain - keeps the base dry year round. Orangevale sits in unincorporated Sacramento County, so the permit line and the ground under the pad both work differently there; our page on slab and pad work in Orangevale covers that side.
Where the money is well spent
Spend on what is invisible: base, thickness, reinforcement. Save on what is cosmetic if the slab is utilitarian - a broom finish serves a shed pad exactly as well as a decorative one. If the slab is also living space, that changes; our stamped and stained finishes turn the same structural pour into a feature.
Getting a real number
A written quote beats a calculator. RMR Construction pours slabs and pads across the Sacramento area - garage floors, shed pads, RV parking, equipment pads - formed square, poured on compacted base, and reinforced for the load. Licensed (CSLB #1088628) and family-owned. Tell us the footprint and what sits on it, and we will put the number in writing - (916) 533-4758.