Home Improvement Costs in Illinois | All Projects (2026)
Planning a home improvement project in Illinois? Below is a complete breakdown of estimated costs for 13 common projects, based on 2026 data. The most expensive typical project is Solar Panel at $17,580, while Home Security System comes in at $300.
Illinois Cost Snapshot
Projects Covered
13
Avg. Typical Cost
$8,798
Renovation Estimate
$9,803
All Home Improvement Costs in Illinois
Sorted by typical cost, most expensive first. Click any project to see a detailed breakdown for Illinois.
| Project | Low | Typical | High |
|---|---|---|---|
| Solar Panel | $11,720 | $17,580 | $29,300 |
| Siding Replacement | $7,378 | $17,337 | $37,356 |
| Deck Building | $6,684 | $13,369 | $26,737 |
| Roof Replacement | $9,913 | $12,745 | $16,993 |
| Childcare | $3,524 | $12,283 | $19,807 |
| Window Replacement | $6,102 | $9,564 | $17,853 |
| HVAC Replacement | $6,383 | $8,956 | $11,902 |
| Garage Door Replacement | $1,971 | $5,208 | $6,312 |
| Flooring Installation | $2,050 | $5,125 | $10,251 |
| Interior Painting | $1,480 | $4,678 | $9,433 |
| Exterior Painting | $1,659 | $4,643 | $9,134 |
| Water Heater Replacement | $2,160 | $2,586 | $7,694 |
| Home Security System | $120 | $300 | $480 |
Full Renovation Estimate for Illinois
If you are planning a major renovation that includes a kitchen remodel, bathroom remodel, new flooring, and interior painting, here is the combined estimate for Illinois:
Low End
$3,530
Typical
$9,803
High End
$19,684
| Included Project | Low | Typical | High |
|---|---|---|---|
| Flooring Installation | $2,050 | $5,125 | $10,251 |
| Interior Painting | $1,480 | $4,678 | $9,433 |
| Total | $3,530 | $9,803 | $19,684 |
This estimate combines kitchen remodel, bathroom remodel, flooring, and interior painting. Actual costs depend on scope, materials, and contractor pricing.
How Illinois Compares to Neighboring States
The table below shows how the average project cost across all calculators in Illinois compares to its neighboring states. If you live near a state border, nearby contractors may offer competitive pricing.
How these costs were calculated
Data sources: Bureau of Labor Statistics (OEWS), Craftsman National Estimator, NAHB permit data
Granularity: State-level averages; metro areas may vary 20–30%
See our full methodology. Report an error.