Home Remodeling Costs in Janesville, WI
Remodeling costs in Janesville run about 9% below the Wisconsin median, based on home values and labor rates across its 2 ZIP codes in Rock County. The ranges below reflect what Janesville homeowners actually pay, from the cheapest to the priciest part of town.
- Cost index
- 0.91×
- Wisconsin median
- Median home value
- $276,941
- Zillow ZHVI
- ZIP codes
- 2
- Rock County
- Projects covered
- 10
- cost + ROI data
What Remodeling Projects Cost in Janesville (2026)
Ranges span Janesville's least to most expensive ZIPs, including the ±15% contractor variance. ROI is the share of cost typically recouped at resale in your census region.
Cost range
$8,895 - $12,035
Typical
$10,465
Cost range
$13,645 - $18,460
Typical
$16,052
Cost range
$20,885 - $28,255
Typical
$24,570
Cost range
$19,028 - $25,744
Typical
$22,386
Cost range
$3,481 - $4,709
Typical
$4,095
Cost range
$13,625 - $18,434
Typical
$16,030
Cost range
$44,476 - $60,174
Typical
$52,325
Cost range
$13,688 - $18,519
Typical
$16,103
Cost range
$1,822 - $2,465
Typical
$2,143
Cost range
$7,735 - $10,465
Typical
$9,100
| Project | Cost range | Typical | ROI | Details |
|---|---|---|---|---|
| Roofing Replacement | $8,895 - $12,035 | $10,465 | 69/100 | ZIP estimate → |
| Window Replacement | $13,645 - $18,460 | $16,052 | 81/100 | ZIP estimate → |
| Kitchen Remodel | $20,885 - $28,255 | $24,570 | 100/100 | ZIP estimate → |
| Bathroom Remodel | $19,028 - $25,744 | $22,386 | 71/100 | ZIP estimate → |
| Garage Door Replacement | $3,481 - $4,709 | $4,095 | 100/100 | ZIP estimate → |
| Deck Addition | $13,625 - $18,434 | $16,030 | 93/100 | ZIP estimate → |
| Basement Finishing | $44,476 - $60,174 | $52,325 | 79/100 | ZIP estimate → |
| Siding Replacement | $13,688 - $18,519 | $16,103 | 100/100 | ZIP estimate → |
| Entry Door Replacement | $1,822 - $2,465 | $2,143 | 100/100 | ZIP estimate → |
| HVAC Replacement | $7,735 - $10,465 | $9,100 | 71/100 | ZIP estimate → |
Sources: Remodeling Magazine Cost vs. Value, Zillow ZHVI, BLS construction wages. Data updated 2026-05. How we calculate estimates
Roofing Replacement Cost by ZIP Code
Pick a project and the prices below update. Costs vary little across Janesville. Open your ZIP for the full local breakdown.