350 permits on homes in ZIP code 91978, October 2023 through September 2026, pulled by 115 contractors: 1% of the 27,509 permits we track in unincorporated San Diego County. Solar leads with 98 permits (28%), then HVAC with 83. Counts cover the 19 kinds of home work we track, not every permit filed in 91978.
Each permit is counted at its property's ZIP code. Share here is the trade's part of the 350 permits in 91978; countywide is the same for all of San Diego County. Firms are distinct business names with at least one permit here. A trade name opens every San Diego County contractor in that trade. No new home permits in 91978 in the window.
| Trade | Permits | Share here | Countywide | Firms |
|---|---|---|---|---|
| Solar | 98 | 28% | 32% | 29 |
| HVAC | 83 | 24% | 18% | 22 |
| Plumbing | 59 | 17% | 5% | 14 |
| Electrical & Service Upgrade | 25 | 7% | 10% | 18 |
| Water Heater | 23 | 7% | 5% | 9 |
| Re-Roof | 17 | 5% | 6% | 13 |
| Battery Storage | 10 | 3% | 7% | 7 |
| Pool & Spa | 7 | 2% | 3% | 5 |
| Windows & Doors | 7 | 2% | 3% | 3 |
| Garage, Patio Cover & Accessory Structure | 4 | 1% | under 1% | 4 |
| EV Charger | 4 | 1% | 2% | 4 |
| Combined Electrical, Plumbing & Mechanical | 4 | 1% | 2% | 4 |
| ADU | 3 | under 1% | 1% | 3 |
| Remodel & Repair | 2 | under 1% | 2% | 2 |
| Addition | 1 | under 1% | under 1% | 1 |
| Demolition | 1 | under 1% | under 1% | 1 |
| Manufactured Home Installation | 1 | under 1% | under 1% | 1 |
| Retaining Wall | 1 | under 1% | under 1% | 1 |
The firms with the most permits in 91978 for the 3 biggest trades here, October 2023 through September 2026. This is volume, not quality: a busy firm is not a careful one. The compare pages let you pick what you value and build your own list.
The other 39 solar permits here were spread across the rest of the firms. Compare all San Diego County solar installers →
The other 29 HVAC permits here were spread across the rest of the firms. Compare all San Diego County HVAC contractors →
The other 9 plumbing permits here were spread across the rest of the firms. Compare all San Diego County plumbers →
We publish counts by ZIP code and by contractor, not a list of permits by street address. The full record for one property, with every permit, its status and its inspections, is kept by the office that issued the permits; our source here is San Diego County Planning & Development Services building permits on homes in the unincorporated county (the County's open-data permit, contractor and status-history files). Ask that permit office for a property's permit history, or search its public records by address.
For a contractor you are about to hire, open their page from the lists above to see every permit they pulled across San Diego County. San Diego County permit statistics → · How the records work in San Diego County →
Source: San Diego County Planning & Development Services building permits on homes in the unincorporated county (the County's open-data permit, contractor and status-history files). The window is October 2023 through September 2026. Each permit is placed by its property's ZIP code (the address on the permit, or the parcel's when the permit has none).
Counted: permits on homes for the 19 kinds of work we track (solar, HVAC, electrical & service upgrade, battery storage, re-roof, plumbing, water heater, windows & doors, pool & spa, new home, remodel & repair, EV charger, combined electrical, plumbing & mechanical, ADU, garage, patio cover & accessory structure, addition, retaining wall, manufactured home installation, demolition) where the record names a contractor. Not counted: commercial work, trades we don't read, and permits with no contractor (owner-pulled work). So this is not the county's count of every permit in 91978.
A ZIP code does not follow city or county lines; these count only permits in unincorporated San Diego County. Counts are permits, not jobs: one job can need several permits.
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