Integrity. Always.

Costello Construction is a name synonymous with integrity, hard work, dedication, and above all, a reputation for building structures of the highest quality.

Since we came together in 1993, one principal has remained unchanged:

client satisfaction is paramount.

Self Performance

30%  On average, we self perform 30% of the work on all our jobs.
Our ability to self perform site work, concrete work and more—combined with the benefits of owning a significant amount of heavy equipment and large tools—helps reduce client costs and keeps our field crew in line with critical construction schedules.

Satisfied Clients

A reputable and responsible contractor of utmost integrity.
Robert N. Endebrock, PE, Director of Facilities Construction, GMU Research One Building
An exceptionally well-managed company…exemplary.
Ernie Lunsford, Chief, Montgomery County Division of Building Design, Civic Building at Veterans Plaza
This contractor went above and beyond.
Pat Welker, Resident Engineer, US Army Corps of Engineers, National Museum of Health and Medicine
Very cooperative, proactive, helpful and honest…
Paul Parsonneault
Resident Engineer
, Fort Detrick Fitness Center
…a real contractor who does not broker the job!
Paul Parsonneault
Resident Engineer
, Fort Detrick Fitness Center

Commercial Construction in Maryland, Virginia and D.C.

Complex Concrete Projects

Civic Building & Pavilion at Veterans Plaza

Building complex concrete structures is only one of the things we do well. This pavilion at Veterans Plaza in Silver Spring is an expertly-executed Cast-In-Place (CIP) structure performed directly by Costello Construction employees.

Other projects involving complex concrete include The National Museum of Health and Medicine, the Modern Art Wing at the Baltimore Museum of Art, and many others.

Costello Construction's Fleet of Construction Vehicles


Our People & Equipment Are Always Ready

As a team, we are always ready to roll up our collective sleeves and tackle a project armed with hard work, dedication and knowledge. From day one, every Costello project receives personal attention from management and enthusiastic commitment from every team member involved.

We’ve also invested in a significant fleet of heavy construction equipment that we own and operate. Having these resources on hand not only helps us control costs, but it also allows us to respond quickly to evolving job site needs.

Quality Control

Quality. Control.

20 Years of Dependability

Our expertise is founded on more than 20 years of self performance and hands-on involvement from management.  Employing approximately 50 industry professionals, Costello Construction boasts a seasoned workforce that includes LEED AP Project Managers, Licensed Architects, and an entire crew of OSHA certified field employees.

Our focus remains on delivering quality projects. Building owners can attest to that. Plus, the industry has recognized us with more than 13 awards in just the past four years alone.

Project Portfolio

Costello Construction provides commercial construction services for both the public and private sectors. We specialize in corporate offices, fitness facilities, higher education projects and urban infrastructure.

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construction projects.

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