The 25 contractors pulling the most building permits in Pittsburgh, ranked by PermitStack's activity score — built from 64,312 permits on file. Updated from live public records.
| # | Contractor | Permits | Score | Top trades | Last permit |
|---|---|---|---|---|---|
| 1 | RENEWAL BY ANDERSEN LLC | 994 | 100 | addition, demolition, electrical | Sep 2024 |
| 2 | THERMO TWIN INDUSTRIES | 619 | 70 | addition, renovation | Apr 2024 |
| 3 | GUNTON CORP | 587 | 73 | interior_remodel, renovation, sign | Oct 2024 |
| 4 | WINDOW WORLD OF PITTSBURGH LLC | 555 | 69 | interior_remodel, renovation | May 2024 |
| 5 | Mistick Construction Company | 489 | 83 | addition, demolition, electrical | Jun 2026 |
| 6 | PREFERRED FIRE PROTECTION INC | 474 | 94 | addition, battery, demolition | Aug 2026 |
| 7 | CW ELECTRICAL SERVICES | 449 | 84 | addition, electrical, ev_charger | Aug 2026 |
| 8 | HOME DEPOT USA INC | 414 | 100 | addition, demolition, electrical | May 2024 |
| 9 | Trinity Solar Inc | 396 | 100 | battery, electrical, interior_remodel | Jul 2026 |
| 10 | Sargent Electric Co | 383 | 85 | addition, electrical, fire_alarm | Aug 2026 |
| 11 | Ferry Electric Company | 370 | 81 | addition, electrical, ev_charger | Aug 2026 |
| 12 | HATZEL & BUEHLER INC | 353 | 90 | addition, battery, demolition | Sep 2026 |
| 13 | JOHNSON CONTROLS FIRE PROTECTION LP | 335 | 100 | addition, battery, demolition | Aug 2026 |
| 14 | WINDOW WORLD PENN OHIO LLC | 314 | 85 | demolition, interior_remodel, renovation | Jun 2024 |
| 15 | Hanlon Electric Company | 310 | 80 | addition, electrical, fire_alarm | Aug 2026 |
| 16 | NICHOLAS ELECTRIC CO INC | 301 | 78 | electrical, hvac | Aug 2026 |
| 17 | Werner Electrical Services Inc | 293 | 76 | electrical, fire_alarm, roofing | Jul 2026 |
| 18 | RuthRauff Sauer LLC | 284 | 79 | addition, hvac, interior_remodel | Aug 2026 |
| 19 | CHRISTOPHER LEVITT ELECTRIC INC | 280 | 67 | addition, electrical, fire_alarm | Apr 2024 |
| 20 | Buccos Roofing Inc | 275 | 66 | foundation, roofing | Jun 2024 |
| 21 | ROCK ELECTRIC | 260 | 99 | battery, electrical, ev_charger | May 2024 |
| 22 | Leone Electrical Contractors, LLC | 258 | 79 | addition, electrical, ev_charger | Aug 2026 |
| 23 | Windows R Us, LLC | 254 | 64 | addition, foundation, interior_remodel | Mar 2024 |
| 24 | Progressive Power Solutions LLC | 248 | 79 | electrical, fire_alarm, hvac | Aug 2026 |
| 25 | Energy Independent Solutions,LLC | 242 | 78 | battery, electrical, roofing | Aug 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 Pittsburgh.
Query contractors, scores, and permits programmatically — GET /v1/contractors/search?state=PA&sort=score