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Founded In: 2010
Size: 1-4 Employees
Annual Vol: Undisclosed
Our Licenses:
Issuer: District of Columbia
Qualifier: Sigma Plumbing & Mechanical
Issuer: District of Columbia
Qualifier: Sigma Plumbing & Mechanical
Issuer: District of Columbia
Qualifier: Sigma Plumbing & Mechanical
Expiration: March 31, 2022

Our Story

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Sigma Plumbing Mechanical Contractors is a Washington DC CBE Certified Business Enterprise in Plumbing and Underground Utility Commercial Contracting. We have been working in the plumbing industry for over 40 years from our beginnings in Kalamata, Greece to our Washington D.C. location today. We are proud to bring excellent customer service and professional work to every project along with competitive bidding prices. Our staff is available to you 24 hours a day, 7 days a week. 

Sigma Plumbing Mechanical Contractors LLC. is committed to providing you the best professional and prompt service. We value each of our projects and customers and aim to provide the best quality work and budget to meet their needs. We approach every project with a focus on cost, aesthetics, maintaining a prompt timeline, reliable service and professionals to work with. For over thirty years Sigma Plumbing Mechanical Contractors has been working to provide the DC Metropolitan Area with a business that they can rely in producing unique and innovative structures. Each of our projects is handled with personally by all company members that are available at any time to assist customers.  

Sigma Plumbing Mechanical Contractors LLC is known for:

  • On-schedule completion
  • Best available pricing
  • Partners available at your desposal 24/7 to assist in questions or concerns
  • Honesty, Integrity, Quality, and a great value
  • Final product exceeding expectations



If you would like to refresh homes and businesses we can help you achieve your vision. Many of our projects have been bringing new life and design to apartments, townhomes, and businesses through out the District, Virginia and Maryland. Sigma has renovated many businesses all through our the District providing happy customers and quality business for District residents. We maintain our high standards even when the project is over. If future problems occur due to normal wear and tear we will come back and work with you to ensure your satisfaction. 


Whether you would like to build a project from the ground up or bring new life to a current structure we can aid you in your goals. We specialize not only in Residential properties but also Commercial new construction and or rennovations. our work includes Plumbing, HVAC and Utilities in each project

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What We Do

Products/Services Relating to Plumbing Contractors
Products/Services Relating to Underground Utilities--Contractors

Project Experience

Service Sector:
Public Private
Project Types:
New Alterations/Renovations Interior Fit-Ups
Project Size:
Up to $1,000,000
Airport Runway
Civil & Site Development
Dams & Levies
Fire / Police Station
Gas Station
Golf Course
Hospital / Nursing Home
Hotel / Motel
Industrial Maintenance
Manufacturing Plant
City / Town Hall
Office Building
Pre-Manufactured Structures
Power Generation & Distribution
Terminal - Airport / Bus / Railroad
Church / Synagogue
Retail Store
Road / Highway
Sewage / Water Treatment Plant
Jail / Prison
Theme Park
Arena / Stadium
Parking Garage
Mixed Use
Historic Preservation
Secure and Shielded Facilities
Park / Playground
Storage Facility / Warehouse
Grocery Stores
Assisted Living
Single Family Residential
Renewable Energy
Design Build
Data Centers - Mission Critical
Lighting Retrofits
Auto Dealership / Service
Non-Building Construction
Athletic Field
Parking Lots
Swimming Pool
Tennis Court
Non-Residential Building
Animal Hospital / Kennel
Court House
Fitness Center
Medical Office
Post Office
Radio / Television Station
Tract Housing

Service Areas

Associations & Memberships

Member of CBE (Certified Business Enterprise) CBE (Certified Business Enterprise)
Member of SBE (Small Business Enterprise) SBE (Small Business Enterprise)
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