Free cost calculator

Home › Cost guides › Michigan › 30×40 Concrete Slab

30×40 Concrete Slab Cost in Michigan (2026)

A 30×40 concrete slab in Michigan costs about $11,632 turnkey in 2026 ($9.69 per sq. ft.). Here's the itemized breakdown of materials, site prep and labor, using local crew rates.

Request free local quotesCustomize this estimate
Concrete & Rebar Materials
$4,019
Ready-mix concrete, rebar, forms & vapor barrier
= Rows 3–6 below, materials only
Excavation & Gravel Base
$2,569
Grading, haul-off & compacted stone base
= Rows 1–2 below, installed price
Turnkey Installed Total
$11,632
$9.69 per sq. ft.
Formed, poured & finished by a local concrete crew
= All rows below, installed price
A fair bid from a local builder in Michigan should land between $10,701 and $12,795. Get 3 quotes, and if one is far outside this range, ask why.

Estimate only. Actual prices vary. No guarantee or warranty. Use as a guide only. Read the full disclaimer

Itemized cost breakdown

#ItemQuantityMaterialsLaborInstalled
1Excavation & gradingStrip topsoil, cut/fill to grade, haul-off1,480 sq ft$516$604$1,344
2Compacted gravel base (4")Crushed stone, plate-compacted20.7 tons$618$403$1,225
34" ready-mix concrete (3,500 PSI)Includes 5% waste and thickened edges19.2 cu yd$2,408$0$2,890
4#4 rebar grid (18" on center) & chairsTied rebar on chairs, dowels at doors1,760 lf$964$686$1,980
5Forms, pour & finish laborSet forms, place, power-trowel finish, cure1,200 sq ft$348$2,020$2,842
6Vapor barrier & control jointsDetails in the spec sheet🔒 Included in $19 spec sheet$299$321$744
7Concrete pump (trailer-mounted)Details in the spec sheet🔒 Included in $19 spec sheet$287$0$344
8Permit & inspection (if required)Details in the spec sheet🔒 Included in $19 spec sheet$219$0$263
Turnkey total$5,659$4,034$11,632
Customize this estimate (free)Request free local quotes

Prices use 2026 material costs and typical local crew rates. Site work, custom options and material price swings can move your final price.

$19 one-time

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 pack
Free

Request 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 quotes

Common questions

How much does a 30×40 Concrete Slab cost in Michigan?

About $11,632 fully built by a local crew in 2026, or roughly $4,019 for the materials kit alone. Most fair bids land between $10,701 and $12,795.

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