MEP Plans in Santa Rosa Valley, CA
Permit-ready mechanical, electrical and plumbing plans for ADUs, garage conversions, additions and single-family homes in Santa Rosa Valley (unincorporated Ventura County), prepared for plan check at Ventura County Resource Management Agency – Building and Safety Division, with Title 24 available in the same order.
Santa Rosa Valley project facts we design around
| County | Ventura County (unincorporated) |
|---|---|
| Title 24 climate zone | Climate Zone 6, confirmed by ZIP for every project |
| Electric utility (most addresses) | Southern California Edison (SCE) |
| Permits issued by | Ventura County Resource Management Agency – Building and Safety Division |
| ADU permits issued, 2021–2025 | 6 |
| ADU approval timeline | Approve or deny within 60 days of a complete application (state law) |
ADU building activity in Santa Rosa Valley
Ventura County issued 6 ADU building permits from 2021 through 2025 for addresses in Santa Rosa Valley, based on the county's reports to the state. Permits went from 1 in 2021 to 1 in 2025.
| 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|
| 1 | 1 | 2 | 1 | 1 |
Source: California Department of Housing and Community Development, Annual Progress Report data (ADU building permits by year).
Title 24 in Climate Zone 6
- Windows: U-factor 0.30 or lower and solar heat gain coefficient (SHGC) 0.23 or lower, with total window area up to 20% of floor area (west-facing up to 5%).
- Solar PV sized by the CEC formula kW = (floor area x 0.594) / 1000 + 1.23; no PV is required if that is under 1.8 kWdc, which for a single ADU works out to about 960 sq ft or smaller.
Climate Zone 6 requirements in full →
HVAC design for Santa Rosa Valley
The HVAC is sized from a room-by-room Manual J using the outdoor design conditions for the address, in Climate Zone 6's coastal, marine-influenced climate. Right-size the heat pump from a real Manual J instead of a tonnage guess.
Electrical service from Southern California Edison (SCE)
If the load calculation shows you need a service upgrade, a second meter or a relocated service, Southern California Edison (SCE) handles that through its Building, Renovation, and Project Planning Portal, separately from the building permit.
ADU electrical service with Southern California Edison (SCE) →
Plumbing and sewer
The plumbing plan shows the route, slope and cleanouts of the connection to the existing sewer lateral or septic system.
Pricing is flat statewide: ADU plans from $995, full ADU MEP package from $2,295, Title 24 add-on $240. See what's in a complete ADU MEP set.
Nearby places compared
| Place | Climate zone | Electric utility | ADU permits 2021–25 |
|---|---|---|---|
| Oxnard | CZ 6 | Southern California Edison (SCE) | 1,265 |
| Thousand Oaks | CZ 9, 6 | Southern California Edison (SCE) | 400 |
| Simi Valley | CZ 9 | Southern California Edison (SCE) | 397 |
| Ventura | CZ 6 | Southern California Edison (SCE) | 249 |
| Moorpark | CZ 9 | Southern California Edison (SCE) | 171 |
| Camarillo | CZ 6 | Southern California Edison (SCE) | 134 |
Guides for Santa Rosa Valley projects
Ready for permit-ready MEP plans in Santa Rosa Valley?
Upload your architectural plans, get an instant flat price, and receive PDF plans in about 5 business days.
Start My OrderGeneral guidance, not legal advice. Climate zone and utility are shown for most addresses in Santa Rosa Valley; requirements vary by project. Confirm with Ventura County Resource Management Agency – Building and Safety Division.