Home › Cost guides › Louisiana › 30×40 Concrete Slab
30×40 Concrete Slab Cost in Louisiana (2026)
A 30×40 concrete slab in Louisiana costs about $10,996 turnkey in 2026 ($9.16 per sq. ft.). Here's the itemized breakdown of materials, site prep and labor, using local crew rates.
Estimate only. Actual prices vary. No guarantee or warranty. Use as a guide only. Read the full disclaimer
Itemized cost breakdown
| # | Item | Quantity | Installed |
|---|---|---|---|
| 1 | Excavation & gradingStrip topsoil, cut/fill to grade, haul-off | 1,480 sq ft | $1,264 |
| 2 | Compacted gravel base (4")Crushed stone, plate-compacted | 20.7 tons | $1,159 |
| 3 | 4" ready-mix concrete (3,500 PSI)Includes 5% waste and thickened edges | 19.2 cu yd | $2,785 |
| 4 | #4 rebar grid (18" on center) & chairsTied rebar on chairs, dowels at doors | 1,760 lf | $1,872 |
| 5 | Forms, pour & finish laborSet forms, place, power-trowel finish, cure | 1,200 sq ft | $2,632 |
| 6 | Vapor barrier & control jointsDetails in the spec sheet | 🔒 Included in $19 spec sheet | $700 |
| 7 | Concrete pump (trailer-mounted)Details in the spec sheet | 🔒 Included in $19 spec sheet | $331 |
| 8 | Permit & inspection (if required)Details in the spec sheet | 🔒 Included in $19 spec sheet | $253 |
| Turnkey total | $10,996 |
Prices use 2026 material costs and typical local crew rates. Site work, custom options and material price swings can move your final price.
Builder Spec Sheet & Shopping List
The same line items as this page in an editable Excel file and a PDF, each with a short spec, quantity, materials, labor and installed price. Plus a permit and site-prep checklist and a sheet for comparing 3 builder bids. 30-day money-back guarantee.
Get my spec packRequest free local quotes
Tell us your ZIP and timeline. We'll match your request with local builders who serve your area as they join our network. No cost, no obligation.
Request free quotesCommon questions
How much does a 30×40 Concrete Slab cost in Louisiana?
About $10,996 fully built by a local crew in 2026, or roughly $3,874 for the materials kit alone. Most fair bids land between $10,116 and $12,096.
What drives the price up or down?
Site prep (slope, soil, driveway access), floor choice, doors and insulation, and local labor rates. Lumber and steel prices also move a few percent a year.
Do I need a permit?
Most counties require a building permit for structures over 200 sq ft. Call your county building department with your size and location before you order materials.
How do I make sure I'm getting a fair quote?
Get at least 3 itemized bids for the same spec. Compare them line by line against this breakdown and ask about anything far above or below it.
Related cost guides
- Concrete Slab & Flatwork cost in Louisiana
- 30×40 Concrete Slab cost in every state
- All Louisiana cost guides
- 24×24 Pole Barn cost in Louisiana
- 30×40 Pole Barn cost in Louisiana
- 40×60 Pole Barn cost in Louisiana
- 50×80 Pole Barn cost in Louisiana
- 30×40 Barndominium Shell cost in Louisiana
- 40×60 Barndominium Shell cost in Louisiana
- 24×24 Detached Garage cost in Louisiana
- 30×40 Detached Garage cost in Louisiana
- 40×60 Concrete Slab cost in Louisiana
- 24×36 Standing Seam Metal Roof cost in Louisiana
- 16×24 Composite Deck cost in Louisiana
- 30×40 Concrete Slab cost in Texas
- 30×40 Concrete Slab cost in Arkansas
- 30×40 Concrete Slab cost in Mississippi