How much does a deck construction cost in Chicago?

A standard deck construction in Chicago, Illinois models at $15,700 – $34,500 at a mid specification, before property-specific conditions.

What changes the price most?

Local labour rates (index 1.18), the specification tier, access and existing conditions. Renolume applies each condition as a named rule and shows which ones fired.

How accurate is this estimate?

This page states a confidence score of 100/100 (High confidence) for a generic property. Answering the planner questions raises it, because the model has more to work with.

Deck Construction cost in Chicago, IL

A typical deck construction in Chicago models at $15,700 – $34,500 at the Better specification, using measured local wage data and a 1.18× labour index. This is a baseline for a standard property — your roofline, access and existing conditions move it.

Price my deck construction

Confidence: High confidence · 100/100 for this generic case

Good

$11,500 – $27,200

Around $17,400 · 22 days elapsed

Better

$15,700 – $34,500

Around $22,900 · 27 days elapsed

Best

$22,700 – $51,000

Around $33,500 · 36 days elapsed

What drives the price in Chicago

Labour index 1.18 · material index 1.05 · permit index 1.3. Labour rates derived from published wage data for Chicago, IL (measured).

Install decking boards$4,400 – $7,000
Frame beams, joists and blocking$2,700 – $5,200
Install guardrail system$2,200 – $4,100
Form, pour and set footings and posts$1,000 – $2,000
Build stairs and handrail$800 – $1,500

Contractor overhead and profit is shown separately at 21%, contingency at 8%. How the confidence score works.

12 conditions that change this number

5 already apply to the baseline case below. The rest depend on answers only you can give.

Guardrail required above 30 in
Elevated deck
Stairs required
Rock excavation
Clay soil
Deep frost line
Attached deck
Freestanding deck

What the job involves

Layout, permit & demolition0.5 days
Excavation & footings1.2 days
Framing1.5 days
Decking1.6 days
Railing & stairs1.1 days
Finishing & inspection0.5 days

Footings are assumed at one per 48 sq ft of deck area with a minimum of four.

The same project in other metros

Get this priced for your actual house

Answer six questions and the range narrows to your roof, your access, your conditions.

Planning estimate only. This is not a quote, bid or appraisal. Ranges reflect typical market conditions for the stated data version and do not account for site-specific concealed conditions, local code interpretation or contractor availability. Always obtain written bids. Data version v2026.1. Last updated April 1, 2026. Methodology.