Cost guide
Renovation prices in Ventura County: 2026 ranges
Coastal Ventura and Oxnard, the Conejo Valley around Thousand Oaks, and Simi Valley through the Santa Clara River Valley. Prices sit a little above LA County on average.
What moves prices here: Coastal Commission review west of the 101, Conejo Valley HOA standards, and wildfire-zone building rules.
Updated
Cost by project
| Project | Typical mid-size | Small to large |
|---|---|---|
| Kitchen Remodel | $37k–$69k | $19k–$158k |
| Bathroom Remodel | $19k–$40k | $7k–$90k |
| ADU Construction | $95k–$189k | $63k–$473k |
| Room Addition | $116k–$231k | $53k–$420k |
| Garage Conversion | $48k–$79k | $23k–$105k |
| Roof Replacement | $16k–$34k | $10k–$59k |
| Pool Construction | $84k–$137k | $58k–$263k |
| Pool Remodel | $16k–$37k | $6k–$84k |
| Deck & Patio | $10k–$27k | $4k–$58k |
| Solar Installation | $19k–$31k | $14k–$48k |
| HVAC Replacement | $11k–$21k | $5k–$37k |
| Window Replacement | $9k–$19k | $4k–$40k |
| Foundation Repair | $9k–$32k | $2k–$105k |
Where prices run highest and lowest
In our October 2026 cost tables, Thousand Oaks is the most expensive place in Ventura County to renovate, about 7% above the county average, and Santa Paula the least expensive, about 14% below it. A mid-size kitchen remodel runs $39k–$73k in Thousand Oaks and $32k–$59k in Santa Paula. The difference is mostly labor rates, permit fees and site conditions.
Cities in Ventura County
Coastal Ventura County
Conejo Valley & East County
How to read these numbers
How are these county cost ranges calculated?
Each project type starts from a 2026 Los Angeles County baseline, adjusted by a county multiplier for local labor, permitting and site conditions. City pages apply their own multiplier. Planning estimates, not quotes.
How do I get a real price for my project?
Get two or three bids on the same scope from licensed builders. Keystone Connect lines them up and lays the bids side by side, free to homeowners.
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