MEP Plans in Shasta Lake, CA
Permit-ready mechanical, electrical and plumbing plans for ADUs, garage conversions, additions and single-family homes in Shasta Lake, prepared for plan check at the City of Shasta Lake building department, with Title 24 available in the same order.
Shasta Lake project facts we design around
| County | Shasta County |
|---|---|
| Title 24 climate zone | Climate Zone 11, confirmed by ZIP for every project |
| Electric utility (most addresses) | City of Shasta Lake Electric Utility |
| Permit review | The City of Shasta Lake building department |
| ADU permits issued, 2021–2025 | 11 (#393 of 450 cities) |
| ADU approval timeline | Approve or deny within 60 days of a complete application (state law) |
ADU building activity in Shasta Lake
Shasta Lake issued 11 ADU building permits from 2021 through 2025, the 393rd most among the 450 California cities that reported ADU permits. Permits went from 1 in 2021 to 3 in 2025.
| 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|
| 1 | 2 | 3 | 2 | 3 |
Source: California Department of Housing and Community Development, Annual Progress Report data (ADU building permits by year).
Title 24 in Climate Zone 11
- Windows: U-factor 0.27 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.
- Cool roof required: steep-sloped roofs need aged solar reflectance 0.2 or higher and thermal emittance 0.75 or higher.
- Solar PV sized by the CEC formula kW = (floor area x 0.836) / 1000 + 1.44; no PV is required if that is under 1.8 kWdc, which for a single ADU works out to about 431 sq ft or smaller.
Climate Zone 11 requirements in full →
HVAC design for Shasta Lake
The HVAC is sized from a room-by-room Manual J using the outdoor design conditions for the address, in Climate Zone 11's Central Valley-style climate — hot summers, cool winters. Heat pump sized for cooling and verified for winter heating.
Electrical service from City of Shasta Lake Electric Utility
If the load calculation shows you need a service upgrade, a second meter or a relocated service, open that request with City of Shasta Lake Electric Utility early; utility lead times are often longer than plan check.
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 |
|---|---|---|---|
| Redding | CZ 11 | Redding Electric Utility | 77 |
| Palo Cedro (unincorp.) | CZ 11 | Pacific Gas and Electric (PG&E) | 25 |
| Cottonwood (unincorp.) | CZ 11 | Pacific Gas and Electric (PG&E) | 10 |
| Anderson | CZ 11 | Pacific Gas and Electric (PG&E) | 9 |
| Shingletown (unincorp.) | CZ 11 | Pacific Gas and Electric (PG&E) | 7 |
Guides for Shasta Lake projects
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Start My OrderGeneral guidance, not legal advice. Climate zone and utility are shown for most addresses in Shasta Lake; requirements vary by project. Confirm with the City of Shasta Lake building department.