Registered Construction Contractors in Delaware

This is a registry of businesses certified as construction contractors in the State of Delaware. Information on an individual's professional licensing is available through the Division of Professional Regulation.

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302 HEATING & COOLING LLC

Certificate No. DE-2025-000012542

Valid until: 05/13/2026

NAICS Code(s): 238220

Clayton, DE

Resident

Valid for Private work only

AIR TIGHT INC

Certificate No. DE-2021-000000809

Valid until: 07/14/2026

NAICS Code(s): 238220

Clayton, DE

Resident

Valid for Private work only

Alvin Miller Masonry, LLC

Certificate No. DE-2025-000013511

Valid until: 08/26/2026

NAICS Code(s): 238140

Clayton, DE

Non-Resident

Valid for Private work only

ANCHOR FENCE OF DELAWARE INC

Certificate No. DE-2026-000014223

Valid until: 01/13/2027

NAICS Code(s): 238900

Clayton, DE

Resident

Valid for both Private and Public Work

BOC PAINTING LLC

Certificate No. DE-2025-000013113

Valid until: 07/24/2026

NAICS Code(s): 238320

Clayton, DE

Resident

Valid for Private work only

BRIGHT ELECTRICAL SOLUTIONS LLC

Certificate No. DE-2026-000014446

Valid until: 02/12/2027

NAICS Code(s): 238210

Clayton, DE

Resident

Valid for Private work only

BYLER BUILDERS LLC

Certificate No. DE-2022-000005183

Valid until: 05/10/2028

NAICS Code(s): 236220

Clayton, DE

Resident

Valid for both Private and Public Work

Byler's Concrete, LLC

Certificate No. DE-2025-000013510

Valid until: 08/26/2026

NAICS Code(s): 238140

Clayton, DE

Non-Resident

Valid for Private work only

Bylers Fence LLC

Certificate No. DE-2026-000014622

Valid until: 03/06/2027

NAICS Code(s): 238990

Clayton, DE

Resident

Valid for Private work only

Bylers Well Service

Certificate No. DE-2026-000014526

Valid until: 03/13/2027

NAICS Code(s): 238990

Clayton, DE

Non-Resident

Valid for Private work only

CAMPBELL PLUMBING LLC

Certificate No. DE-2025-000013210

Valid until: 07/28/2026

NAICS Code(s): 238220

Clayton, DE

Resident

Valid for Private work only

CHRISTOPHER L RIBOLLA

Certificate No. DE-2025-000013776

Trade Name (DBA): Chris Ribolla's Flooring

Valid until: 10/15/2026

NAICS Code(s): 238330

Clayton, DE

Resident

Valid for both Private and Public Work

COLLISON CONTRACTING LLC dba Pink Electrical Services

Certificate No. DE-2022-000005543

Trade Name (DBA): Pink Electrical Services

Valid until: 06/08/2027

NAICS Code(s): 238210

Clayton, DE

Resident

Valid for Private work only

D & A BUILDERS INC

Certificate No. DE-2025-000012033

Valid until: 02/25/2027

NAICS Code(s): 238350

Clayton, DE

Resident

Valid for Private work only

D&R Miller LLC

Certificate No. DE-2025-000013370

Valid until: 08/11/2026

NAICS Code(s): 238130

Clayton, DE

Resident

Valid for Private work only

DEL FAB CONSTRUCTION LLC

Certificate No. DE-2021-000003316

Valid until: 09/30/2027

NAICS Code(s): 238990

Clayton, DE

Resident

Valid for Private work only

DELAWARE EXTERIORS LLC

Certificate No. DE-2025-000013617

Valid until: 09/11/2026

NAICS Code(s): 238160, 238190

Clayton, DE

Resident

Valid for Private work only

DICKSON PLUMBING LLC

Certificate No. DE-2025-000013810

Valid until: 10/21/2026

NAICS Code(s): 237110, 238220

Clayton, DE

Resident

Valid for both Private and Public Work

DUCK CREEK FENCE LLC

Certificate No. DE-2026-000014692

Valid until: 03/13/2027

NAICS Code(s): 238990

Clayton, DE

Resident

Valid for Private work only

DUCLAW DESIGN LLC

Certificate No. DE-2024-000011341

Valid until: 10/08/2026

NAICS Code(s): 236118

Clayton, DE

Resident

Valid for Private work only

Disclaimer

Contractors listed on this Public Lookup are contractors who have properly registered and have been considered compliant with laws of the State of Delaware's Department of Labor. If a contractor is not on this registry, they either have not submitted an application to the Department to review at this time, or they have been removed. If a contractor was previously listed as compliant on this site and is no longer listed, it means either the contractor may have not reregistered their application, their application is currently being reviewed, or the contractor may have been suspended and/or their certificate has been revoked from the Registry by the Department. If you are seeking to know whether a contractor not listed on this site is compliant, you may call the Department at 302-430-7739 for the status of the contractor.