The 25 contractors pulling the most building permits in San Jose, ranked by PermitStack's activity score — built from 25,591 permits on file. Updated from live public records.
| # | Contractor | Permits | Score | Top trades | Last permit |
|---|---|---|---|---|---|
| 1 | Sunrun Inc | 212 | 100 | addition, battery, electrical | Jul 2026 |
| 2 | ON-TIME AC & HEATING | 126 | 50 | — | Jun 2026 |
| 3 | JIREH INC | 113 | 77 | roofing, solar | Jul 2026 |
| 4 | SILICON VALLEY BUILDERS GROUP | 92 | 76 | addition, interior_remodel, new_construction | May 2026 |
| 5 | GROUNDWORKS CALIFORNIA LLC | 80 | 97 | addition, fence, foundation | Jul 2026 |
| 6 | FUSE SERVICE INC. | 80 | 96 | addition, battery, electrical | Jul 2026 |
| 7 | FAST WATER HEATER CO | 69 | 99 | electrical, hvac, mechanical | May 2026 |
| 8 | Bright Planet Solar | 67 | 99 | battery, electrical, grading | Mar 2026 |
| 9 | WARNER CUSTOM HOMES | 59 | 91 | foundation, interior_remodel, mechanical | Jul 2026 |
| 10 | JM CONSTRUCTION | 57 | 87 | addition, demolition, electrical | Apr 2026 |
| 11 | SIS CONSTRUCTION, INC | 57 | 34 | — | Feb 2024 |
| 12 | ARS AMERICAN RESIDENTIAL SERVICES | 51 | 80 | hvac, plumbing, renovation | May 2026 |
| 13 | CENTER STATE CONSTRUCTION INC | 51 | 63 | demolition, electrical, foundation | Jun 2026 |
| 14 | RANDO AAA HVAC INC | 49 | 71 | hvac, mechanical, plumbing | Jun 2026 |
| 15 | FIEDLER CONSTRUCTION & ROOFING INC | 43 | 71 | interior_remodel, roofing | Jun 2026 |
| 16 | ALL SEASONS ROOFING SERVICE | 40 | 68 | roofing | Jul 2026 |
| 17 | IRBIS HVAC | 39 | 84 | electrical, ev_charger, hvac | Apr 2026 |
| 18 | ATKINSON CLIMATROLLERS INC | 33 | 69 | electrical, hvac, plumbing | Jun 2026 |
| 19 | GIULIANI CONSTRUCTION AND RESTORATION IN | 33 | 42 | electrical | Jan 2026 |
| 20 | Rite Rooter Plumbing | 32 | 81 | electrical, hvac, plumbing | Apr 2026 |
| 21 | JK ELECTRICAL SERVICES INC | 32 | 66 | electrical, ev_charger | Dec 2025 |
| 22 | Axia Solar | 30 | 100 | battery, electrical, roofing | Jan 2026 |
| 23 | A-1 HEATING AND COOLING | 29 | 83 | electrical, hvac, interior_remodel | May 2026 |
| 24 | NRG CLEAN POWER | 27 | 100 | battery, electrical, ev_charger | Apr 2026 |
| 25 | WISE BUILDERS REMODELING INC | 27 | 67 | addition, demolition, hvac | 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 San Jose.
Query contractors, scores, and permits programmatically — GET /v1/contractors/search?state=CA&sort=score