The 25 contractors pulling the most building permits in Lake County, ranked by PermitStack's activity score — built from 196,442 permits on file. Updated from live public records.
| # | Contractor | Permits | Score | Top trades | Last permit |
|---|---|---|---|---|---|
| 1 | Sunrun Installation Services, Inc | 436 | 100 | addition, battery, electrical | Aug 2026 |
| 2 | Mellen Septic Services Inc | 424 | 95 | electrical, fence, grading | Aug 2026 |
| 3 | ALBERTS LAND DESIGN, INC | 303 | 93 | demolition, electrical, fence | Aug 2026 |
| 4 | AZTEC FENCE CO | 183 | 86 | fence, interior_remodel | Jul 2026 |
| 5 | SOS SERVICE | 183 | 72 | demolition, grading, interior_remodel | Apr 2024 |
| 6 | JW TRENCHING INC | 175 | 90 | demolition, electrical, grading | Jul 2026 |
| 7 | FOX VALLEY SERVICES, INC. | 141 | 89 | addition, demolition, electrical | Jul 2026 |
| 8 | Asplundh Tree Experts Co, LLC | 131 | 65 | — | Jun 2026 |
| 9 | J A SCHWALL INC | 122 | 77 | demolition, interior_remodel, new_construction | Apr 2025 |
| 10 | MACH 1, INC. | 109 | 90 | addition, demolition, electrical | Aug 2026 |
| 11 | Aztec Fence Company Inc.1 | 99 | 78 | fence, grading, interior_remodel | Aug 2026 |
| 12 | AMC SEPTIC DESIGN SERVICES | 81 | 81 | addition, electrical, fence | Dec 2025 |
| 13 | POLENA ENGINEERING LLC | 73 | 80 | electrical, grading, interior_remodel | Jul 2026 |
| 14 | J MAKI CONSTRUCTION CO INC | 67 | 74 | addition, demolition, electrical | Dec 2025 |
| 15 | AC HOME DESIGN | 66 | 81 | electrical, grading, interior_remodel | Jul 2026 |
| 16 | ROCK SOLID BUILDERS,LLC | 58 | 84 | addition, demolition, electrical | Jul 2026 |
| 17 | BOB ROHRS & SON, INC | 53 | 75 | electrical, grading, interior_remodel | Nov 2025 |
| 18 | HELMER EXCAVATING & SEPTIC LLC | 51 | 79 | demolition, grading, interior_remodel | Aug 2026 |
| 19 | SUB-SURFACE GEOTHERMAL INC | 50 | 72 | grading, plumbing, renovation | Aug 2025 |
| 20 | RECHEL SEPTIC SYSTEMS | 49 | 73 | demolition, grading, plumbing | Jun 2025 |
| 21 | Aqua Doctor Plumbing L.L.C. | 47 | 70 | grading, interior_remodel, plumbing | Aug 2026 |
| 22 | Vivint Solar Developer, LLC. | 46 | 97 | addition, battery, electrical | Nov 2021 |
| 23 | SANTI CONSTRUCTION | 46 | 72 | addition, electrical, fence | Jul 2026 |
| 24 | Tron Solar | 45 | 96 | battery, electrical, grading | Jun 2025 |
| 25 | Sunrun Inc | 44 | 100 | addition, battery, electrical | Jul 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