The 25 contractors pulling the most building permits in Hayward, ranked by PermitStack's activity score — built from 77,631 permits on file. Updated from live public records.
| # | Contractor | Permits | Score | Top trades | Last permit |
|---|---|---|---|---|---|
| 1 | SERVICE CHAMPIONS | 358 | 100 | addition, electrical, ev_charger | Aug 2026 |
| 2 | Bright Planet Solar | 330 | 99 | addition, battery, electrical | Jul 2026 |
| 3 | FAST WATER HEATER CO | 321 | 99 | electrical, hvac, interior_remodel | Aug 2026 |
| 4 | Sunrun Installation Services, Inc | 263 | 100 | addition, battery, electrical | Aug 2026 |
| 5 | Sunrun Inc | 253 | 100 | addition, battery, electrical | Oct 2025 |
| 6 | Brighton Coulson Inc. | 226 | 78 | electrical, ev_charger, fence | Jul 2026 |
| 7 | CITADEL ROOFING AND SOLAR | 221 | 100 | battery, electrical, ev_charger | Jun 2026 |
| 8 | THORPE DESIGN INC | 141 | 100 | addition, demolition, fire_alarm | Apr 2026 |
| 9 | Better Earth Electric | 136 | 100 | battery, electrical, ev_charger | Jul 2026 |
| 10 | HARRIS WATER HEATERS INC | 125 | 94 | electrical, hvac, plumbing | Jul 2026 |
| 11 | William Lyon Homes | 102 | 86 | addition, demolition, electrical | Mar 2023 |
| 12 | Olson Electric | 91 | 84 | electrical, hvac, new_construction | May 2025 |
| 13 | HOME DEPOT USA INC | 90 | 100 | addition, demolition, electrical | Nov 2025 |
| 14 | Citadel Roofing & Solar | 89 | 100 | battery, electrical, ev_charger | Feb 2025 |
| 15 | SunPower Corp | 88 | 100 | battery, electrical, hvac | Jun 2024 |
| 16 | AMERICAN WATER HEATER SERVICE INC. | 85 | 76 | electrical, plumbing | Apr 2026 |
| 17 | Maciel Roofing | 85 | 75 | roofing | Jul 2026 |
| 18 | JAZZ HEATING & COOLING LLC | 78 | 90 | electrical, hvac, mechanical | Aug 2026 |
| 19 | Beck Roofing Company Inc | 68 | 68 | roofing, solar | May 2026 |
| 20 | empower solar | 64 | 100 | battery, electrical, hvac | Sep 2025 |
| 21 | Vincent Roofing Co., Inc. | 64 | 72 | roofing | Aug 2026 |
| 22 | Solgen Construction | 63 | 87 | electrical, interior_remodel, renovation | Apr 2024 |
| 23 | D R HORTON BAY INC | 59 | 78 | addition, electrical, fence | Jun 2024 |
| 24 | BARKER HEATING & COOLING INC | 58 | 77 | hvac, mechanical, plumbing | Aug 2026 |
| 25 | RENEWAL BY ANDERSEN LLC | 57 | 100 | addition, demolition, electrical | Jul 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 Hayward.
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