The 25 contractors pulling the most building permits in Rockford, ranked by PermitStack's activity score — built from 20,459 permits on file. Updated from live public records.
| # | Contractor | Permits | Score | Top trades | Last permit |
|---|---|---|---|---|---|
| 1 | PEARSON PLUMBING & HEATING | 610 | 81 | hvac, mechanical, plumbing | Apr 2026 |
| 2 | WILLIAM CHARLES ELECTRIC LLC | 376 | 70 | electrical | Feb 2025 |
| 3 | Total Plumbing & Heating Ltd | 326 | 78 | electrical, hvac, mechanical | Apr 2026 |
| 4 | PEASON PLUMBING & HEATING | 301 | 75 | hvac, interior_remodel, mechanical | Dec 2025 |
| 5 | Bright Planet Solar | 283 | 99 | interior_remodel, roofing, solar | Nov 2025 |
| 6 | Helm Electric | 242 | 73 | electrical | Apr 2026 |
| 7 | Engel Electric Co. | 235 | 74 | electrical, solar | Apr 2026 |
| 8 | JANSEN HEATING & ELECTRIC | 231 | 73 | electrical, hvac | Nov 2025 |
| 9 | Jansen Heating A/C & Electrical | 222 | 72 | hvac, mechanical | Nov 2025 |
| 10 | DPI CONSTRUCTION | 215 | 75 | electrical, plumbing | Apr 2026 |
| 11 | AREA MECHANICAL INC. | 140 | 73 | addition, hvac, interior_remodel | Apr 2026 |
| 12 | NICOR GAS COMPANY | 129 | 68 | mechanical | Mar 2026 |
| 13 | Black Diamond Plumbing & Mechanical | 124 | 71 | electrical, hvac, mechanical | Apr 2026 |
| 14 | BUFALO CONTRACTING INC. | 122 | 72 | renovation, roofing | Apr 2026 |
| 15 | MILLER ENGINEERING CO. | 97 | 73 | electrical, fire_alarm, hvac | Apr 2026 |
| 16 | Martin Exteriors Inc. | 93 | 71 | renovation, roofing | Apr 2026 |
| 17 | Advocate Construction Inc | 92 | 71 | renovation, roofing | Mar 2026 |
| 18 | Green Link Solar Solution | 84 | 73 | solar | Apr 2026 |
| 19 | Allen Heating & Cooling Inc/Bomar | 82 | 68 | hvac, mechanical, roofing | Apr 2026 |
| 20 | WARNER CONTRACTING LLC | 72 | 68 | roofing | Apr 2026 |
| 21 | Latino Heating & Cooling | 66 | 67 | electrical, hvac, interior_remodel | Apr 2026 |
| 22 | GREENLINK SOLAR SOLUTIONS | 65 | 67 | solar | Apr 2026 |
| 23 | MASTER MART PLUMBING | 61 | 65 | plumbing | Apr 2026 |
| 24 | Anderson Plumbing | 55 | 66 | electrical, hvac, plumbing | Apr 2026 |
| 25 | CHISTOPIAN SERVICES INC.(ROTO ROOTER) | 45 | 61 | plumbing | Aug 2025 |
"Score" is a 0–100 activity index from permit volume, recency, project value, and geographic reach. "Permits" counts building permits this contractor pulled in Rockford.
Query contractors, scores, and permits programmatically — GET /v1/contractors/search?state=IL&sort=score