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30×40 Concrete Slab Cost in Alaska (2026)
A 30×40 concrete slab in Alaska costs about $13,940 turnkey in 2026 ($11.62 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 | $1,637 |
| 2 | Compacted gravel base (4")Crushed stone, plate-compacted | 20.7 tons | $1,464 |
| 3 | 4" ready-mix concrete (3,500 PSI)Includes 5% waste and thickened edges | 19.2 cu yd | $3,269 |
| 4 | #4 rebar grid (18" on center) & chairsTied rebar on chairs, dowels at doors | 1,760 lf | $2,372 |
| 5 | Forms, pour & finish laborSet forms, place, power-trowel finish, cure | 1,200 sq ft | $3,607 |
| 6 | Vapor barrier & control jointsDetails in the spec sheet | 🔒 Included in $19 spec sheet | $904 |
| 7 | Concrete pump (trailer-mounted)Details in the spec sheet | 🔒 Included in $19 spec sheet | $389 |
| 8 | Permit & inspection (if required)Details in the spec sheet | 🔒 Included in $19 spec sheet | $298 |
| Turnkey total | $13,940 |
Prices use 2026 material costs and typical local crew rates. Site work, custom options and material price swings can move your final price.
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How much does a 30×40 Concrete Slab cost in Alaska?
About $13,940 fully built by a local crew in 2026, or roughly $4,546 for the materials kit alone. Most fair bids land between $12,825 and $15,334.
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.
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