Contractor permit directory

Contractors observed in Maryland county permit records, grouped from public filings. Our observation is not complete: not every filing names a contractor, so a firm's real activity is almost always greater than what appears here.

All counties Anne Arundel County Baltimore County Frederick County Howard County Prince George's County

All trades Accessory Structure Deck & Patio Electrical Exterior Fire Protection Gas Interior HVAC Plumbing Pool & Spa Sign Site Solar Structural

HARRIS SMARIGA AND ASSOCIATES Site/Frederick County 318 permits/to Sep 2026
Rodgers Consulting Inc - Yellow Team Site/Frederick County 173 permits/to Sep 2026
TERRA SOLUTIONS ENGINEERING TERRA SOLUTIONS ENGINEERING Site/Frederick County 161 permits/to Aug 2026
AERO ENERGY Site/Baltimore County, Frederick County 142 permits/to Aug 2026
B & R Design Group Site/Frederick County 56 permits/to Jul 2026
BILLY SWORD Site/Frederick County 54 permits/to Aug 2026
ADTEK Engineers, Inc. Site/Frederick County 48 permits/to Aug 2026
Daft-McCune-Walker, Inc. Site/Frederick County 38 permits/to Mar 2026
Triad Engineering In HG Civil Dept Site/Frederick County 28 permits/to Jul 2026
Dewberry Engineers Inc. Site/Frederick County 25 permits/to Apr 2026
KCI Technologies Site/Frederick County 23 permits/to May 2026
Senior Engineer Andrew Mueller Site/Frederick County 23 permits/to Oct 2025
JOSEPH H CECI Site/Frederick County 21 permits/to Jul 2026
Piedmont Design Group, LLC Site/Frederick County 21 permits/to Aug 2026
MR JOHN MAZELON Site/Frederick County 17 permits/to Feb 2026
MORGAN KELLER INC Site/Frederick County, Howard County 15 permits/to May 2026
CLSI Site/Frederick County 9 permits/to Jun 2026
Bert Newcomer Site/Frederick County 8 permits/to Oct 2024
Brittany Ayers Site/Frederick County 8 permits/to Dec 2025
Clark | Azar and Associates Site/Frederick County 8 permits/to Nov 2025
CJ MILLER, LLC Site/Frederick County, Howard County 7 permits/to Feb 2026
MR MICHAEL BATTERN Site/Frederick County 7 permits/to May 2026
Chris Collins Site/Baltimore County, Frederick County 6 permits/to Apr 2025
Daphne Matthews Site/Frederick County 6 permits/to Jun 2026
Principal Environmental Engineer Carianne A Finch Site/Frederick County 6 permits/to Jan 2026
JS Tank Removal Site/Frederick County 5 permits/to Jul 2026
Mark Murray Site/Frederick County 5 permits/to Aug 2025
WHITING-TURNER CONTRACTING Site/Frederick County, Howard County 5 permits/to May 2026
Thurston Companies, Inc. Site/Frederick County, Howard County 4 permits/to Apr 2026
Ware Malcomb Site/Frederick County 4 permits/to Sep 2024
CES Engineering LLC Site/Frederick County 3 permits/to May 2025
Derek Scott Site/Frederick County 3 permits/to May 2026
dmac homes llc Site/Frederick County 3 permits/to Jul 2023
Phoenix Engineering Inc. Site/Frederick County, Howard County 3 permits/to Oct 2025
TOTAL ENVIRONMENTAL CONCEPTS INC Site/Frederick County, Howard County 3 permits/to Jun 2026

Source: county permit records. Updated weekly.