The 25 contractors pulling the most building permits in Ann Arbor, ranked by PermitStack's activity score — built from 75,159 permits on file. Updated from live public records.
| # | Contractor | Permits | Score | Top trades | Last permit |
|---|---|---|---|---|---|
| 1 | STATE MECHANICAL SERVICES INC | 316 | 86 | electrical, hvac, interior_remodel | Sep 2026 |
| 2 | Del Zoppo Electric | 123 | 50 | electrical, hvac | Oct 2026 |
| 3 | haley mechanical | 118 | 51 | battery, electrical, hvac | Oct 2026 |
| 4 | SNIDER ELECTRIC LLC | 109 | 87 | electrical | Sep 2026 |
| 5 | VEDDER ELECTRIC, INC. | 107 | 49 | electrical | Oct 2026 |
| 6 | AAE INC | 84 | 79 | electrical, hvac, renovation | Oct 2026 |
| 7 | Dynamic Drains, LLC | 68 | 47 | hvac, plumbing | Oct 2026 |
| 8 | ROBERTSON MORRISON INC | 62 | 48 | hvac, mechanical, plumbing | Oct 2026 |
| 9 | Midwest Construction & Concrete | 52 | 67 | interior_remodel, renovation | Sep 2026 |
| 10 | Jetstream Mechanical | 52 | 46 | hvac, mechanical | Oct 2026 |
| 11 | Home Run Mechanical | 51 | 45 | hvac, mechanical | Aug 2026 |
| 12 | RENEWAL BY ANDERSEN LLC | 41 | 100 | addition, demolition, electrical | Sep 2026 |
| 13 | SAM & SONS ELECTRIC LLC | 40 | 51 | electrical, fire_alarm, hvac | Aug 2026 |
| 14 | OAK ELECTRIC LLC | 38 | 84 | addition, battery, electrical | Oct 2026 |
| 15 | TAMER PLUMBING | 38 | 52 | plumbing | Aug 2026 |
| 16 | Steele Heating & Cooling, Inc. | 38 | 44 | hvac | Oct 2026 |
| 17 | Hutzel Plumbing and Heating | 34 | 44 | hvac, plumbing | Oct 2026 |
| 18 | HOME INSPECTION PLUS | 33 | 72 | electrical, interior_remodel, plumbing | Sep 2026 |
| 19 | KT Group | 33 | 43 | electrical, hvac | Sep 2026 |
| 20 | NEFF MECHANICAL LLC | 32 | 63 | electrical, mechanical, solar | Oct 2026 |
| 21 | CMR MECHANICAL | 31 | 54 | hvac, mechanical, plumbing | Sep 2026 |
| 22 | 365 Mechanical LLC | 30 | 44 | hvac | Sep 2026 |
| 23 | MASTERCRAFT PLUMBING, INC. | 28 | 79 | fire_alarm, mechanical, plumbing | Oct 2026 |
| 24 | RANDAZZO MECHANICAL | 27 | 61 | electrical, ev_charger, hvac | Sep 2026 |
| 25 | Michigan Solar Solutions | 26 | 71 | battery, electrical, hvac | Sep 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 Ann Arbor.
Query contractors, scores, and permits programmatically — GET /v1/contractors/search?state=MI&sort=score