The 25 contractors pulling the most building permits in Whatcom County, ranked by PermitStack's activity score — built from 56,834 permits on file. Updated from live public records.
| # | Contractor | Permits | Score | Top trades | Last permit |
|---|---|---|---|---|---|
| 1 | BARRON HEATING & COOLING | 4,419 | 91 | addition, electrical, hvac | Jul 2026 |
| 2 | Marr's Heating And A/C | 1,857 | 88 | addition, hvac, interior_remodel | Jul 2026 |
| 3 | INNOVATIONS INC | 1,358 | 91 | hvac, interior_remodel, mechanical | Jun 2026 |
| 4 | LYNDEN SHEET METAL INC | 1,308 | 98 | addition, electrical, fire_alarm | Jun 2026 |
| 5 | ANDGAR MECHANICAL LLC | 1,282 | 98 | addition, electrical, fire_alarm | Jun 2026 |
| 6 | Feller Heating | 906 | 87 | hvac, mechanical, plumbing | Mar 2026 |
| 7 | ALVORD-RICHARDSON CONSTRUCTION | 669 | 91 | addition, demolition, fence | May 2026 |
| 8 | Favinger Plumbing | 402 | 65 | hvac, mechanical, plumbing | Apr 2026 |
| 9 | *Main* SMITH MECHANICAL | 396 | 68 | addition, hvac, interior_remodel | Aug 2023 |
| 10 | Pioneer Post Frame Inc | 344 | 75 | addition, demolition, fence | Aug 2023 |
| 11 | WEST MECHANICAL INC | 304 | 89 | hvac, mechanical, plumbing | Apr 2026 |
| 12 | Coast Construction | 263 | 94 | addition, demolition, electrical | Jun 2026 |
| 13 | Rolling Wheels Construction | 221 | 78 | addition, demolition, foundation | Aug 2024 |
| 14 | CLEAN AIR HEATING AND COOLING | 219 | 79 | addition, hvac, mechanical | Jul 2026 |
| 15 | COACH CORRAL INC | 174 | 95 | addition, demolition, foundation | May 2026 |
| 16 | FABER CONSTRUCTION CORP | 171 | 90 | addition, demolition, electrical | May 2026 |
| 17 | ULTRA TANK SERVICES INC | 137 | 81 | addition, demolition, fire_alarm | Apr 2026 |
| 18 | DJ & DJ Contracting, LLC | 121 | 75 | interior_remodel, new_construction, plumbing | Nov 2025 |
| 19 | MOCERI CONSTRUCTION INC | 99 | 76 | addition, demolition, fence | Jul 2025 |
| 20 | *Tidemark Conversion* BLYTHE PLUMBING/HEATING INC | 95 | 44 | hvac, interior_remodel, mechanical | Jul 2015 |
| 21 | Z CONSTRUCTION CO., INC | 93 | 84 | addition, demolition, electrical | Jun 2025 |
| 22 | Gary Kitching LLC | 86 | 76 | addition, demolition, grading | Nov 2025 |
| 23 | WHATCOM FARMERS CO-OP | 86 | 23 | fire_alarm, hvac, mechanical | Jan 2016 |
| 24 | Vetkov Construction LLC | 84 | 73 | demolition, new_construction | May 2026 |
| 25 | ALLIANCE PROPERTIES 2000 LLC | 83 | 48 | addition, new_construction | Jun 2021 |
"Score" is a 0–100 activity index from permit volume, recency, project value, and geographic reach. "Permits" counts building permits this contractor pulled in Whatcom County.
Query contractors, scores, and permits programmatically — GET /v1/contractors/search?state=WA&sort=score