MEP Plans in Canyon Country, Santa Clarita
Permit-ready mechanical, electrical and plumbing plans for ADUs, garage conversions, additions and single-family homes in Canyon Country (City of Santa Clarita), prepared for plan check at the City of Santa Clarita building department, with Title 24 available in the same order.
Canyon Country project facts we design around
| City | City of Santa Clarita |
|---|---|
| County | Los Angeles County |
| Title 24 climate zone | Climate Zone 9, confirmed by ZIP for every project |
| Electric utility (most addresses) | Southern California Edison (SCE) |
| Permit review | The City of Santa Clarita building department |
| ADU permits issued, 2021–2025 | 51 |
| ADU approval timeline | Approve or deny within 60 days of a complete application (state law) |
ADU building activity in Canyon Country
The City of Santa Clarita issued 51 ADU building permits from 2021 through 2025 for addresses in Canyon Country, based on the city's reports to the state. Permits went from 16 in 2021 to 7 in 2025.
| 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|
| 16 | 8 | 10 | 10 | 7 |
Source: California Department of Housing and Community Development, Annual Progress Report data (ADU building permits by year).
Title 24 in Climate Zone 9
- 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%).
- Whole-house fan required (at least 1.5 cfm per square foot of floor area); units of 500 sq ft or less are exempt.
- Solar PV sized by the CEC formula kW = (floor area x 0.613) / 1000 + 1.36; no PV is required if that is under 1.8 kWdc, which for a single ADU works out to about 718 sq ft or smaller.
Climate Zone 9 requirements in full →
HVAC design for Canyon Country
The HVAC is sized from a room-by-room Manual J using the outdoor design conditions for the address, in Climate Zone 9's inland climate with hot summers. Cooling-driven Manual J with real window orientation and glazing.
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.
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 |
|---|---|---|---|
| Newhall (Santa Clarita) | CZ 9 | Southern California Edison (SCE) | 44 |
| Valencia (Santa Clarita) | CZ 9 | Southern California Edison (SCE) | 15 |
| Anaheim | CZ 8 | Anaheim Public Utilities | 1,713 |
| Santa Ana | CZ 8 | Southern California Edison (SCE) | 956 |
| Irvine | CZ 8 | Southern California Edison (SCE) | 14 |
Los Angeles County → · All California cities and communities →
Guides for Canyon Country projects
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Start My OrderGeneral guidance, not legal advice. Climate zone and utility are shown for most addresses in Canyon Country; requirements vary by project. Confirm with the City of Santa Clarita building department.