Ballpark Lab

Siding Cost Calculator / Illinois

Illinois siding estimate

Siding Cost in Illinois (2026)

Compare a consistent house and installation scope before customizing. The Illinois regional model factor is 1.13× and adjusts the modeled subtotal; it is not a measured local labor rate. Price inputs last updated July 6, 2026.

A two-story vinyl siding scenario in Illinois

45 × 30 ft footprint (150 ft perimeter), 19 ft walls, gable roof, 12 windows, 2 doors, 1 garage door, no tear-off. These are also the calculator's initial settings, not measured averages of local homes.

$12k – $48k
Input completenesshigh

Based on the model's answered input checks, including defaults. This is not verified price accuracy or a statistical confidence level.

Material takeoff

Siding to order
32 squares
Starter strip
150 lf
Housewrap
3,075 sq ft
Outside corner posts
76 lf
Vinyl boxes (2 squares/box)
17 boxes

Cost breakdown

vinyl siding (installed)
$10k – $39k
Permit allowance
$100 – $400
Total
$12k – $48k
Model estimate
$27,872
  • Wall area = footprint perimeter × 19 ft grade-to-eave height; a 1.5:1 rectangle is assumed when only the perimeter is known.
  • 2 gable triangles estimated at a 6/12 pitch for the "gable" roof style.
  • Openings reduced at 75% of their area (trim and cuts eat part of the saving); waste factor 13%.
  • Re-siding typically needs a building permit in Illinois; HOAs and historic districts may review material and color, and rotted sheathing found at tear-off is the classic change order. Hail exposure pushes many homeowners toward impact-resistant fiber cement.

Installed-price bands and regional factors are planning inputs. The model includes a generic permit allowance but excludes hidden rot, replacement sheathing, structural repairs and hazardous-materials work. See data provenance and limitations and the calculation method.

Regional planning notes for Illinois

Illinois re-siding carries a hail asterisk: enough of the state sees damaging storms that impact-resistant fiber cement is a rational upgrade, and insurers time many projects. Chicago's brick two-flats limit full-wrap work in the city, so volume lives in the suburbs and downstate, where vinyl leads. Freeze-thaw winters punish tight-nailed installs. The blended labor rate runs about 13 percent above the national average, with a wide metro-versus-downstate spread underneath it.

Estimate your siding in Illinois

House details

This estimates wall area from your footprint — we adjust for stories, gables, windows and doors.

The long side of the house, in feet.

The short side, in feet.

Footprint perimeter: 150 ft (2 × (length + width))

Grade to eave, in feet — pre-filled from the story count.

Gable ends add sided triangles; hip and flat roofs don't.

Openings to subtract
Windows
12
Doors
2
Garage doors
1

Trim and cuts eat part of the saving — most estimators don't subtract 100%.

Estimated total
$11,963–$47,851
Vinyl · 32.3 squares
Low $12kMost likely ~$27,872High $48k

$12k – $48k · $9 per square foot (/sq ft) · 32.3 siding squares (1 square = 100 sq ft)

Input completenesshigh

Based on the model's answered input checks, including defaults. This is not verified price accuracy or a statistical confidence level.

Material takeoff

Siding to order
32 squares
Starter strip
150 lf
Housewrap
3,075 sq ft
Outside corner posts
76 lf
Vinyl boxes (2 squares/box)
17 boxes

Cost breakdown

vinyl siding (installed)
$10k – $39k
Permit allowance
$100 – $400
Total
$12k – $48k
Model estimate
$27,872
  • Wall area = footprint perimeter × 19 ft grade-to-eave height; a 1.5:1 rectangle is assumed when only the perimeter is known.
  • 2 gable triangles estimated at a 6/12 pitch for the "gable" roof style.
  • Openings reduced at 75% of their area (trim and cuts eat part of the saving); waste factor 13%.
  • Re-siding typically needs a building permit in Illinois; HOAs and historic districts may review material and color, and rotted sheathing found at tear-off is the classic change order. Hail exposure pushes many homeowners toward impact-resistant fiber cement.

Compare materials

VinylSelected
$12k – $48k
Fiber cement
$20k – $56k
Engineered wood
$24k – $60k
Wood
$28k – $68k

The same house in each material — same size, openings, site, and state.

iBallpark estimate for planning, not a bid. Wall area is estimated from your footprint — a contractor will measure each wall. Excludes hidden rot, sheathing replacement, and structural repairs found at tear-off. Get 3 local quotes before signing.

Site data & assumptions: U.S. EIA · OpenEI URDB · Google Solar · NREL PVWatts · DSIRE · IRS · ENERGY STAR · Ballpark Lab model assumptions — see all sources

Frequently asked questions

How much does siding cost in Illinois?
The two-story reference house (45 × 30 ft footprint, about 32.3 squares to order) has a modeled vinyl range of $12k – $48k before tear-off. This is a planning model, not a local bid survey.
How does fiber cement compare with vinyl in Illinois?
For the same reference house, the model gives $20k – $56k for fiber cement versus $12k – $48k for vinyl. Compare product specifications, installation details and a contractor's written scope; price alone does not determine suitability.
Do I need a permit to re-side a house in Illinois?
Confirm requirements with the municipality responsible for your address, including any historic-district or design review. The estimate contains a generic permit allowance, not a determination of approval or an official fee.

Siding costs in other states