MEP Plans in Glendale, CA
Permit-ready mechanical, electrical and plumbing plans for ADUs, garage conversions, additions and single-family homes in Glendale, prepared for plan check at the City of Glendale building department, with Title 24 available in the same order.
Glendale project facts we design around
| County | Los Angeles County |
|---|---|
| Title 24 climate zone | Climate Zone 9, confirmed by ZIP for every project |
| Electric utility (most addresses) | Glendale Water and Power |
| Permit review | The City of Glendale building department |
| ADU permits issued, 2021–2025 | 2,945 (#4 of 450 cities) |
| ADU approval timeline | Approve or deny within 60 days of a complete application (state law) |
ADU building activity in Glendale
Glendale issued 2,945 ADU building permits from 2021 through 2025, the 4th most among the 450 California cities that reported ADU permits. Permits went from 422 in 2021 to 695 in 2025.
| 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|
| 422 | 684 | 583 | 561 | 695 |
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 Glendale
The California Energy Commission's design-day data for Glendale gives the outdoor conditions a Manual J load calculation uses: a summer design temperature of 94°F and a winter design temperature of 30°F.
| Summer design (1%) | 94°F dry bulb / 68°F wet bulb |
|---|---|
| Winter design (median of extremes) | 30°F |
| Daily temperature range | 28°F |
| Elevation | 563 ft |
Both seasons matter here. The heat pump is usually sized for the 94°F cooling condition and then checked to confirm it still covers the heating load at 30°F.
Electrical service from Glendale Water and Power
If the load calculation shows you need a service upgrade, a second meter or a relocated service, open that request with Glendale Water and Power 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 |
|---|---|---|---|
| Los Angeles | CZ 9, 8, 6, 16 | Los Angeles Department of Water and Power (LADWP) | 52,059 |
| Long Beach | CZ 6, 8 | Southern California Edison (SCE) | 3,015 |
| Burbank | CZ 9 | Burbank Water and Power | 1,376 |
| Torrance | CZ 6, 8 | Southern California Edison (SCE) | 1,051 |
| Downey | CZ 8 | Southern California Edison (SCE) | 1,020 |
| Lakewood | CZ 8 | Southern California Edison (SCE) | 1,016 |
Los Angeles County → · All California cities and communities →
Guides for Glendale projects
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Start My OrderGeneral guidance, not legal advice. Climate zone and utility are shown for most addresses in Glendale; requirements vary by project. Confirm with the City of Glendale building department.