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Construction company directory

Construction Companies in Maryland

Our directory lists 166 construction companies in Maryland across 77 cities, built from OpenStreetMap office records and the ENR Top 400 Contractors list. Baltimore has the most listings. Each listing shows only the facts on record.

Companies
166 companies
Cities
77 cities
Ranked contractors
4 ENR Top 400 contractors

Which cities in Maryland have the most construction companies?

Baltimore has the most construction companies in Maryland, with 8 listings, followed by Bel Air. Pick a city to see every company listed there.

Which construction companies are listed in Maryland?

These are the 30 most complete of the 166 construction companies listed in Maryland, with ranked contractors first.

Search all 166 companies in Maryland

Which large contractors are based in Maryland?

The Whiting-Turner Contracting Co. is the highest-ranked contractor listed in Maryland, at No. 5 on the ENR Top 400 Contractors list for 2026.

  1. 5The Whiting-Turner Contracting Co.Baltimore
  2. 124James G. Davis Construction Corp.Rockville
  3. 217Harkins Builders Inc.Columbia
  4. 316Quandel EnterprisesAbingdon

What are the most common construction trades in Maryland?

The most listed trade in Maryland is hvac contractors, with 49 companies. A company can be listed under more than one trade.

How do I check a contractor's license in Maryland?

Search the Maryland Home Improvement Commission by company name or license number before you hire. Maryland licenses home improvement contractors who repair or renovate existing homes. New-home and commercial general contractors generally fall outside this license.

Check a license in Maryland

Licensing rules checked October 2026. Requirements change, so confirm on the state site.

FAQ

Construction companies in Maryland: FAQs

How many construction companies are in Maryland?

Our directory lists 166 construction companies in Maryland, from OpenStreetMap office records and the ENR Top 400 Contractors list.

Which cities in Maryland have the most construction companies?

Baltimore (8), Bel Air (8), Kensington (7), Oakland (7) and Aberdeen (6) have the most listings in Maryland.

How do I check a contractor's license in Maryland?

Maryland licenses home improvement contractors who repair or renovate existing homes. New-home and commercial general contractors generally fall outside this license. Search the Maryland Home Improvement Commission by company or license number before you hire.

Which large contractors are based in Maryland?

Ranked contractors listed in Maryland include The Whiting-Turner Contracting Co. (No. 5), James G. Davis Construction Corp. (No. 124), Harkins Builders Inc. (No. 217) and Quandel Enterprises (No. 316) on the ENR Top 400 Contractors list for 2026.

What construction trades are most common in Maryland?

The trades with the most listings in Maryland are hvac contractors (49), roofing contractors (23), builders (15) and plumbing contractors (13).

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Office locations © OpenStreetMap contributors, available under the Open Database License. Company rankings from the ENR Top 400 Contractors (2026).

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