MEP Plans in Crescent City, CA
Permit-ready mechanical, electrical and plumbing plans for ADUs, garage conversions, additions and single-family homes in Crescent City, prepared for plan check at the City of Crescent City building department, with Title 24 available in the same order.
Crescent City project facts we design around
| County | Del Norte County |
|---|---|
| Title 24 climate zone | Climate Zone 1, confirmed by ZIP for every project |
| Electric utility (most addresses) | Pacific Power (PacifiCorp) |
| Permit review | The City of Crescent City building department |
| ADU permits issued, 2021–2025 | 35 (#325 of 450 cities) |
| ADU approval timeline | Approve or deny within 60 days of a complete application (state law) |
ADU building activity in Crescent City
Crescent City issued 35 ADU building permits from 2021 through 2025, the 325th most among the 450 California cities that reported ADU permits. Permits went from 5 in 2022 to 27 in 2024.
| 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|
| not reported | 5 | 3 | 27 | not reported |
Source: California Department of Housing and Community Development, Annual Progress Report data (ADU building permits by year).
Title 24 in Climate Zone 1
- 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 0.793) / 1000 + 1.27; no PV is required if that is under 1.8 kWdc, which for a single ADU works out to about 668 sq ft or smaller.
Climate Zone 1 requirements in full →
HVAC design for Crescent City
The California Energy Commission's design-day data for Crescent City gives the outdoor conditions a Manual J load calculation uses: a summer design temperature of 68°F and a winter design temperature of 28°F.
| Summer design (1%) | 68°F dry bulb / 59°F wet bulb |
|---|---|
| Winter design (median of extremes) | 28°F |
| Daily temperature range | 18°F |
| Elevation | 40 ft |
| Heating degree days | 4,445 |
Both seasons matter here. The heat pump is usually sized for the 68°F cooling condition and then checked to confirm it still covers the heating load at 28°F.
Electrical service from Pacific Power (PacifiCorp)
If the load calculation shows you need a service upgrade, a second meter or a relocated service, Pacific Power (PacifiCorp) handles that through its Builder Service Request, separately from the building permit.
ADU electrical service with Pacific Power (PacifiCorp) →
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 |
|---|---|---|---|
| Smith River (unincorp.) | CZ 1 | Pacific Power (PacifiCorp) | 16 |
| Long Beach | CZ 6, 8 | Southern California Edison (SCE) | 3,015 |
| Torrance | CZ 6, 8 | Southern California Edison (SCE) | 1,051 |
| Santa Monica | CZ 6 | Southern California Edison (SCE) | 620 |
| Huntington Beach | CZ 6 | Southern California Edison (SCE) | 437 |
Del Norte County → · All California cities and communities →
Guides for Crescent City projects
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Start My OrderGeneral guidance, not legal advice. Climate zone and utility are shown for most addresses in Crescent City; requirements vary by project. Confirm with the City of Crescent City building department.