Home Remodeling Costs in Walnut Creek, CA
Remodeling costs in Walnut Creek run about 36% above the California median, based on home values and labor rates across its 4 ZIP codes in Contra Costa County. The ranges below reflect what Walnut Creek homeowners actually pay, from the cheapest to the priciest part of town.
- Cost index
- 1.35×
- California median
- Median home value
- $1,057,362
- Zillow ZHVI
- ZIP codes
- 4
- Contra Costa County
- Projects covered
- 10
- cost + ROI data
What Remodeling Projects Cost in Walnut Creek (2026)
Ranges span Walnut Creek'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
$9,677 - $19,838
Typical
$15,583
Cost range
$14,844 - $30,429
Typical
$23,902
Cost range
$22,721 - $46,575
Typical
$36,585
Cost range
$20,701 - $42,435
Typical
$33,333
Cost range
$3,787 - $7,762
Typical
$6,098
Cost range
$14,823 - $30,386
Typical
$23,868
Cost range
$48,386 - $99,187
Typical
$77,913
Cost range
$14,891 - $30,526
Typical
$23,978
Cost range
$1,982 - $4,062
Typical
$3,191
Cost range
$8,415 - $17,250
Typical
$13,550
| Project | Cost range | Typical | ROI | Details |
|---|---|---|---|---|
| Roofing Replacement | $9,677 - $19,838 | $15,583 | 76/100 | ZIP estimate → |
| Window Replacement | $14,844 - $30,429 | $23,902 | 85/100 | ZIP estimate → |
| Kitchen Remodel | $22,721 - $46,575 | $36,585 | 100/100 | ZIP estimate → |
| Bathroom Remodel | $20,701 - $42,435 | $33,333 | 91/100 | ZIP estimate → |
| Garage Door Replacement | $3,787 - $7,762 | $6,098 | 100/100 | ZIP estimate → |
| Deck Addition | $14,823 - $30,386 | $23,868 | 100/100 | ZIP estimate → |
| Basement Finishing | $48,386 - $99,187 | $77,913 | 71/100 | ZIP estimate → |
| Siding Replacement | $14,891 - $30,526 | $23,978 | 100/100 | ZIP estimate → |
| Entry Door Replacement | $1,982 - $4,062 | $3,191 | 100/100 | ZIP estimate → |
| HVAC Replacement | $8,415 - $17,250 | $13,550 | 77/100 | 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 up to 52% across Walnut Creek. Open your ZIP for the full local breakdown.