The 25 contractors pulling the most building permits in Mankato, ranked by PermitStack's activity score — built from 96,264 permits on file. Updated from live public records.
| # | Contractor | Permits | Score | Top trades | Last permit |
|---|---|---|---|---|---|
| 1 | PERMIT CONTRACTOR CONVERTED | 42,303 | 62 | addition, demolition, electrical | Jun 2015 |
| 2 | Heyn Brothers Construction | 2,024 | 92 | hvac, interior_remodel, new_construction | Aug 2026 |
| 3 | Northern Comfort LLC | 1,695 | 89 | addition, electrical, hvac | Aug 2026 |
| 4 | K & C PLUMBING INC | 992 | 93 | addition, hvac, interior_remodel | Jul 2025 |
| 5 | KADUCE PLUMBING & HEATING | 827 | 65 | addition, demolition, hvac | Jul 2022 |
| 6 | Davis Comfort Systems | 797 | 85 | electrical, hvac, interior_remodel | Jul 2026 |
| 7 | kopp plumbing & heating inc | 673 | 85 | addition, electrical, foundation | Aug 2026 |
| 8 | GLOWING HEARTH & HOME | 559 | 97 | addition, electrical, hvac | Jul 2026 |
| 9 | MRI MECHANICAL RESOURCES | 484 | 81 | hvac, interior_remodel, mechanical | Jul 2026 |
| 10 | HELLEKSON HEATING & A/C LLC | 479 | 83 | hvac, interior_remodel, mechanical | Jul 2026 |
| 11 | HEARTLAND HOMES OF MANKATO INC | 423 | 64 | fence, foundation, interior_remodel | Nov 2022 |
| 12 | GOODRICH CONSTRUCTION CO | 413 | 88 | addition, demolition, electrical | Jul 2026 |
| 13 | Boelter Windows, Siding, & Roofing | 376 | 62 | addition, interior_remodel, renovation | Jan 2023 |
| 14 | MIKE HANSEN CONSTRUCTION LLC | 354 | 75 | demolition, fence, interior_remodel | May 2023 |
| 15 | ALLIANCE CONTRACTING | 331 | 92 | addition, demolition, fire_alarm | Aug 2026 |
| 16 | COMPLETE BASEMENT SYSTEMS | 323 | 96 | addition, battery, electrical | Jun 2026 |
| 17 | ANDRESEN PLUMBING | 316 | 79 | hvac, interior_remodel, mechanical | Apr 2026 |
| 18 | COUNTRYSIDE REFRIG & HEATING | 312 | 76 | hvac, interior_remodel, mechanical | May 2026 |
| 19 | HINIKER HOMES INC | 307 | 80 | foundation, interior_remodel, new_construction | Jun 2026 |
| 20 | BAUER ROOFING AND CONSTRUCTION | 307 | 80 | demolition, roofing | Jul 2026 |
| 21 | RESTORATION BUILDERS LLC | 291 | 94 | addition, demolition, electrical | May 2024 |
| 22 | WILCON CONSTRUCTION SERVICES, LLC | 276 | 80 | addition, demolition, fire_alarm | May 2026 |
| 23 | HOMRAK CONSTRUCTION INC | 261 | 80 | fence, interior_remodel, new_construction | Aug 2026 |
| 24 | Wassman Plumbing | 260 | 79 | interior_remodel, new_construction, plumbing | Jun 2026 |
| 25 | DRUMMER LAND INVESTMENTS LLC | 252 | 63 | demolition, fence, foundation | May 2023 |
"Score" is a 0–100 activity index from permit volume, recency, project value, and geographic reach. "Permits" counts building permits this contractor pulled in Mankato.
Query contractors, scores, and permits programmatically — GET /v1/contractors/search?state=MN&sort=score