Unincorporated Shasta County · Climate Zone 11

MEP Plans in Shingletown, CA

Permit-ready mechanical, electrical and plumbing plans for ADUs, garage conversions, additions and single-family homes in Shingletown (unincorporated Shasta County), prepared for plan check at the Shasta County building department, with Title 24 available in the same order.

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Shingletown project facts we design around

CountyShasta County (unincorporated)
Title 24 climate zoneClimate Zone 11, confirmed by ZIP for every project
Electric utility (most addresses)Pacific Gas and Electric (PG&E)
Permits issued byThe Shasta County building department
ADU permits issued, 2021–20257
ADU approval timelineApprove or deny within 60 days of a complete application (state law)

ADU building activity in Shingletown

Shasta County issued 7 ADU building permits from 2021 through 2025 for addresses in Shingletown, based on the county's reports to the state. Permits went from 1 in 2021 to 2 in 2025.

20212022202320242025
11212

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 Shingletown

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 Pacific Gas and Electric (PG&E)

If the load calculation shows you need a service upgrade, a second meter or a relocated service, Pacific Gas and Electric (PG&E) handles that through its Your Projects portal, separately from the building permit.

ADU electrical service with Pacific Gas and Electric (PG&E) →

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

PlaceClimate zoneElectric utilityADU permits 2021–25
ReddingCZ 11Redding Electric Utility77
Palo Cedro (unincorp.)CZ 11Pacific Gas and Electric (PG&E)25
Shasta LakeCZ 11City of Shasta Lake Electric Utility11
Cottonwood (unincorp.)CZ 11Pacific Gas and Electric (PG&E)10
AndersonCZ 11Pacific Gas and Electric (PG&E)9

Shasta County → · All California cities and communities →

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General guidance, not legal advice. Climate zone and utility are shown for most addresses in Shingletown; requirements vary by project. Confirm with the Shasta County building department.