The 25 contractors pulling the most building permits in Lake County, ranked by PermitStack's activity score — built from 73,725 permits on file. Updated from live public records.
| # | Contractor | Permits | Score | Top trades | Last permit |
|---|---|---|---|---|---|
| 1 | Sunrun Installation Services, Inc | 426 | 100 | addition, battery, electrical | Jul 2026 |
| 2 | Mellen Septic Services Inc | 418 | 95 | electrical, fence, grading | Jun 2026 |
| 3 | ALBERTS LAND DESIGN, INC | 296 | 94 | demolition, electrical, fence | Jul 2026 |
| 4 | SOS SERVICE | 183 | 74 | demolition, grading, interior_remodel | Apr 2024 |
| 5 | AZTEC FENCE CO | 176 | 85 | fence, interior_remodel | Jun 2026 |
| 6 | JW TRENCHING INC | 173 | 91 | demolition, electrical, grading | May 2026 |
| 7 | FOX VALLEY SERVICES, INC. | 139 | 90 | addition, demolition, electrical | Jun 2026 |
| 8 | Asplundh Tree Experts Co, LLC | 131 | 54 | — | May 2026 |
| 9 | J A SCHWALL INC | 122 | 78 | demolition, interior_remodel | Apr 2025 |
| 10 | MACH 1, INC. | 107 | 90 | addition, demolition, grading | Jun 2026 |
| 11 | Aztec Fence Company Inc.1 | 95 | 79 | fence, grading, interior_remodel | Jun 2026 |
| 12 | AMC SEPTIC DESIGN SERVICES | 81 | 82 | addition, electrical, fence | Dec 2025 |
| 13 | POLENA ENGINEERING LLC | 72 | 78 | electrical, grading, interior_remodel | Mar 2026 |
| 14 | J MAKI CONSTRUCTION CO INC | 67 | 76 | addition, demolition, electrical | Dec 2025 |
| 15 | AC HOME DESIGN | 65 | 80 | electrical, grading, interior_remodel | Jun 2026 |
| 16 | ROCK SOLID BUILDERS,LLC | 58 | 82 | addition, demolition, electrical | Jun 2026 |
| 17 | BOB ROHRS & SON, INC | 53 | 77 | electrical, grading, interior_remodel | Nov 2025 |
| 18 | HELMER EXCAVATING & SEPTIC LLC | 51 | 80 | demolition, grading, interior_remodel | Jun 2026 |
| 19 | SUB-SURFACE GEOTHERMAL INC | 50 | 73 | grading | Aug 2025 |
| 20 | RECHEL SEPTIC SYSTEMS | 49 | 75 | demolition, grading, plumbing | Jun 2025 |
| 21 | Vivint Solar Developer, LLC. | 46 | 99 | addition, battery, electrical | Nov 2021 |
| 22 | SANTI CONSTRUCTION | 46 | 73 | addition, electrical, fence | Jul 2026 |
| 23 | Aqua Doctor Plumbing L.L.C. | 46 | 71 | grading, interior_remodel, plumbing | Jun 2026 |
| 24 | Tron Solar | 45 | 94 | battery, electrical, grading | Jun 2025 |
| 25 | Sunrun Inc | 43 | 100 | addition, battery, electrical | Jun 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 Lake County.
Query contractors, scores, and permits programmatically — GET /v1/contractors/search?state=IL&sort=score