How much does excavation and grading cost in St. Louis, MO?

Most St. Louis homeowners spend between $7,050 – $21,200 on excavation and grading, with an average around $14,100. Local labor prices 6% below the national average, so St. Louis quotes tend to land at the lower end of national ranges.

Why is excavation and grading more or less expensive in St. Louis than elsewhere?

Licensed trade labor in St. Louis runs about 94% of the national average, and the best crews book out fastest in spring and early summer. Missouri weather drives material choices here, so ask contractors what they install most often in St. Louis and why.

Do I need a permit for excavation and grading in St. Louis, Missouri?

Most St. Louis, MO projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not. Always confirm current requirements with the local building department before signing a contract, and make sure the permit is pulled by your licensed contractor.

How many quotes should I get in St. Louis?

Get at least three written quotes from licensed, insured Missouri contractors. Comparing line items — not just the bottom line — is the fastest way to spot an inflated bid in the St. Louis metro market.

How much does excavation and grading cost in 2026?

Most homeowners pay between $7,500 and $22,500, with a national average near $15,000. Small, simple jobs land at the low end; large or premium-material jobs run well above the high end.

What is the cost per cubic yard?

Installed pricing usually runs $50.00 to $150.00 per cubic yard, including labor and materials. Expensive metros can run 15–45% higher than that range.

What drives the price up the most?

Scope and access. Larger quantities lower your per-cubic yard price, but difficult access, demolition of existing work, structural repairs found mid-job, premium materials and rush scheduling each add 8–30%.

Permits are typically required when the work changes structure or ties into electrical, plumbing, gas or mechanical systems. Budget $75–$600 in most cities and confirm whether your contractor pulls it — unpermitted work can block a future home sale.

How long does the job take?

Most residential projects of this type finish in one to five working days once materials are on site. Custom orders, inspections and weather are the usual causes of delay.

How many quotes should I get?

Three. Bids on the same scope commonly vary 20–40%, and the middle bid with the strongest warranty and references is usually the best value — the cheapest bid often excludes prep, disposal or permits.

Home/Cost guides/Excavation and Grading/St. Louis, MO

St. Louis metro · Missouri

Excavation and Grading cost in St. Louis, MO

St. Louis homeowners typically pay $7,050 – $21,200 for excavation and grading. Local labor and materials price 6% below the national average.

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St. Louis average

$14,100

Typical low

$7,050

Typical high

$21,200

Per cubic yard

$47 – $140

Sample ZIP

What drives St. Louis pricing

Local labor

Licensed trade labor in St. Louis runs about 94% of the national average, and the best crews book out fastest in spring and early summer.

Permits & code

Most St. Louis, MO projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not.

Climate & conditions

Missouri weather drives material choices here, so ask contractors what they install most often in St. Louis and why.

Instant cost calculator

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Material to move (cubic yards)150 cubic yards

Quality / material level

Site access

Removal / prep work

Timing

Estimated project cost

$8,265 – $11,400

Most homeowners pay around $9,833

Compare quality / material level

Cost by material in St. Louis

Installed St. Louis pricing per cubic yard.

Option	Installed cost	Pros	Cons
Simple grading	$58 – $80	—	—
Standard excavation and haul	$80 – $105	—	—
Rock or difficult soil	$105 – $135	—	—
Excavation with retaining and drainage	$135 – $190	—	—

Where the money goes in St. Louis

A typical $14,100 St. Louis project, broken down by line item.

Labor0.45% · $63
Materials0.38% · $54
Permits & inspections0.05% · $7
Overhead & profit0.12% · $17

Common add-ons

Extras that show up on St. Louis quotes but rarely in the headline price.

Soil haul-off

$19 – $56

Rock breaking

$94 – $280

Erosion control

$470 – $2,800

Compaction testing

$375 – $1,400

Ways to save in St. Louis

Keep excavated soil on site for backfill and berms to avoid haul-off.
Schedule when the ground is dry — wet soil doubles handling time.
Collect three written bids on an identical scope — spreads of 20–40% are normal.
Book in the off-season and stay flexible on the start date to save 5–15%.
Bundle nearby work into one mobilization so you only pay setup and travel once.
Ask what the contractor would change to cut 10% without hurting durability.

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