MEP Plans in Ben Lomond, CA
Permit-ready mechanical, electrical and plumbing plans for ADUs, garage conversions, additions and single-family homes in Ben Lomond (unincorporated Santa Cruz County), prepared for plan check at Santa Cruz County Community Development & Infrastructure (CDI) – Building Permits & Safety, with Title 24 available in the same order.
Ben Lomond project facts we design around
| County | Santa Cruz County (unincorporated) |
|---|---|
| Title 24 climate zone | Climate Zone 3, confirmed by ZIP for every project |
| Electric utility (most addresses) | Pacific Gas and Electric (PG&E) |
| Permits issued by | Santa Cruz County Community Development & Infrastructure (CDI) – Building Permits & Safety |
| ADU permits issued, 2021–2025 | 5 |
| ADU approval timeline | Approve or deny within 60 days of a complete application (state law) |
ADU building activity in Ben Lomond
Santa Cruz County issued 5 ADU building permits from 2021 through 2025 for addresses in Ben Lomond, based on the county's reports to the state. Permits went from 1 in 2021 to 3 in 2024.
| 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|
| 1 | not reported | 1 | 3 | not reported |
Source: California Department of Housing and Community Development, Annual Progress Report data (ADU building permits by year).
Title 24 in Climate Zone 3
- Windows: U-factor 0.27 or lower (no SHGC limit in this zone), with total window area up to 20% of floor area.
- Solar PV sized by the CEC formula kW = (floor area x 0.628) / 1000 + 1.12; no PV is required if that is under 1.8 kWdc, which for a single ADU works out to about 1,083 sq ft or smaller.
Climate Zone 3 requirements in full →
HVAC design for Ben Lomond
The California Energy Commission's design-day data for Ben Lomond gives the outdoor conditions a Manual J load calculation uses: a summer design temperature of 83°F and a winter design temperature of 25°F.
| Summer design (1%) | 83°F dry bulb / 65°F wet bulb |
|---|---|
| Winter design (median of extremes) | 25°F |
| Daily temperature range | 30°F |
| Elevation | 450 ft |
Both seasons matter here. The heat pump is usually sized for the 83°F cooling condition and then checked to confirm it still covers the heating load at 25°F.
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
| Place | Climate zone | Electric utility | ADU permits 2021–25 |
|---|---|---|---|
| Santa Cruz | CZ 3 | Pacific Gas and Electric (PG&E) | 446 |
| Watsonville | CZ 3 | Pacific Gas and Electric (PG&E) | 196 |
| Capitola | CZ 3 | Pacific Gas and Electric (PG&E) | 81 |
| Aptos (unincorp.) | CZ 3 | Pacific Gas and Electric (PG&E) | 71 |
| Scotts Valley | CZ 3 | Pacific Gas and Electric (PG&E) | 35 |
| Soquel (unincorp.) | CZ 3 | Pacific Gas and Electric (PG&E) | 20 |
Santa Cruz County → · All California cities and communities →
Guides for Ben Lomond projects
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Start My OrderGeneral guidance, not legal advice. Climate zone and utility are shown for most addresses in Ben Lomond; requirements vary by project. Confirm with Santa Cruz County Community Development & Infrastructure (CDI) – Building Permits & Safety.