Mobilization Cost Calculator

Mobilization gets the job site ready — trailer, temp utilities, fencing, safety signage, initial equipment deployment. Owners typically allow 2-4% of contract for mid-size commercial; smaller jobs need more. This calculator compares percent-of-contract and itemized approaches to size mobilization fairly.

Construction contract value

Mobilization % of contract

Site office/trailer setup

Temp utilities

Site fencing

Total mobilization cost

$150,000

% of contract mobilization

$150,000

Itemized mobilization

$45,000

% method excess vs itemized

$105,000

How the math works

Mobilization covers the cost of getting a construction site ready — site trailer, temp utilities, fencing, equipment delivery, first-day crew. Typical: 2-4% of contract value on mid-size commercial. Small jobs: 5-7%. Mobilization is billed early (often month 1) and recovered through early draws.

Lender contracts typically front-load mobilization — first draw covers 100% of mobilization cost. This helps GC cash flow early on the job when exposure is highest.

How to Use

Enter construction contract value.
Enter mobilization as % of contract (typical 2-5%).
Enter itemized costs: trailer, utilities, fencing.
Read total mobilization.

Frequently Asked Questions

Why front-load mobilization draw?

GC absorbs significant upfront cost before any revenue. Early mobilization draw smooths contractor cash flow so they can keep labor and equipment on site without out-of-pocket exposure.

Does mobilization include permits?

Usually no — permits are a separate line in soft costs. Mobilization is site-preparation physical work and equipment.

Credit at end of job?

Some GMP contracts credit back over-mobilization at close-out. Rare but worth asking — if the 3% estimate only used 2%, that delta goes back to owner.