The 25 contractors pulling the most building permits in El Cajon, ranked by PermitStack's activity score — built from 8,798 permits on file. Updated from live public records.
| # | Contractor | Permits | Score | Top trades | Last permit |
|---|---|---|---|---|---|
| 1 | WALTER ANDERSON PLUMBING | 144 | 97 | demolition, electrical, hvac | Aug 2026 |
| 2 | West Coast Appliance Services, Inc | 78 | 97 | electrical, hvac, mechanical | Jun 2026 |
| 3 | Priest Development Corporation - Contractor | 49 | 54 | electrical, interior_remodel, new_construction | May 2024 |
| 4 | SEMPER SOLARIS CONSTRUCTION INC | 48 | 100 | battery, electrical, ev_charger | May 2026 |
| 5 | ASI Hastings, Inc | 48 | 100 | electrical, fire_alarm, hvac | Apr 2026 |
| 6 | GREENCAT INC | 47 | 89 | electrical, hvac, interior_remodel | Aug 2026 |
| 7 | LANCO PLUMBING INC | 40 | 99 | addition, battery, electrical | Feb 2025 |
| 8 | BAY ALARM COMPANY | 34 | 99 | addition, demolition, electrical | Apr 2026 |
| 9 | PGMA LLC | 33 | 69 | electrical, ev_charger, hvac | Aug 2026 |
| 10 | Infill Development Company | 32 | 57 | fence, new_construction, plumbing | Feb 2022 |
| 11 | ASI Hastings HVAC Dept | 28 | 53 | hvac, mechanical, plumbing | Aug 2026 |
| 12 | THA HEATING & AIR | 25 | 56 | electrical, hvac, mechanical | Jan 2026 |
| 13 | CALIFORNIA DELTA MECHANICAL INC | 24 | 100 | electrical, hvac, interior_remodel | Jul 2026 |
| 14 | DREAMSTYLE REMODELING OF CALIFORNIA LLC | 22 | 92 | addition, electrical, interior_remodel | Sep 2025 |
| 15 | EMERGENCY RESPONSE SYSTEMS INC | 19 | 55 | electrical, fire_alarm, new_construction | Feb 2025 |
| 16 | DELTA MECHANICAL | 18 | 100 | addition, electrical, fire_alarm | Jun 2026 |
| 17 | MATTHEWS SIGNS INC | 18 | 95 | addition, electrical, interior_remodel | May 2026 |
| 18 | Comfort Bros Heating and Air | 18 | 78 | electrical, hvac, mechanical | Aug 2026 |
| 19 | Teasley Incorporated dba Teasley Electric | 18 | 44 | electrical, solar | Mar 2023 |
| 20 | ANTOUN PACIFIC COAST BUILDER INC | 17 | 66 | addition, electrical, interior_remodel | Jul 2026 |
| 21 | KAISER FOUNDATION HEALTH PLAN INC | 16 | 100 | addition, battery, demolition | Sep 2025 |
| 22 | STERLING MECHANICAL | 16 | 86 | electrical, hvac, interior_remodel | Aug 2025 |
| 23 | ASI Hastings Plumbing Dept | 15 | 45 | plumbing | Aug 2026 |
| 24 | GRID Alternatives Inc | 14 | 100 | addition, battery, electrical | Mar 2026 |
| 25 | HOME DEPOT USA INC | 14 | 100 | addition, demolition, electrical | Jun 2026 |
"Score" is a 0–100 activity index from permit volume, recency, project value, and geographic reach. "Permits" counts building permits this contractor pulled in El Cajon.
Query contractors, scores, and permits programmatically — GET /v1/contractors/search?state=CA&sort=score