Business Details
16 Years
experience
Emergency
services
Expert Plumbing & Site Utilities in Washington DC
Sigma Plumbing Mechanical Contractors is a family-owned and operated business serving the Washington DC area. With over 50 years of combined industry experience, our roots trace back to Kalamata, Greece, where our expertise began before establishing our third-generation operations in Washington DC in 2010. We pride ourselves on delivering exceptional customer service, professional craftsmanship, and meticulous attention to detail on every project. Our team is available 24 hours a day, seven days a week, to address client needs promptly.As a Washington DC Certified Business Enterprise (CBE), we meet rigorous standards for local and small business qualifications. Our services span commercial and residential sectors, including new construction and renovations for general contractors, developers, and construction managers. We specialize in plumbing, site utilities, and multi-trade contracting, ensuring comprehensive solutions tailored to each projects unique requirements.
Services
Plumbing Installation
Stormwater Management
Interior Plumbing
Natural Gas Systems
Underground Utilities
Site Development
Tenant Fit-Outs
Emergency Repairs
Details
- Year established: 2010
Highlights and features
- We offer 50+ years of combined plumbing expertise across generations.
- Our team is family-owned and locally operated in Washington DC.
- We hold Washington DC CBE certification for quality and compliance.
- Our services include 24/7 emergency plumbing and utility support.
- We provide multi-trade contracting solutions for complex projects.
Associations and certifications
- Washington DC Certified Business Enterprise (CBE)
Services
Plumbing Installation
We specialize in interior plumbing systems for commercial and residential buildings, including domestic water, sanitary, storm, and natural gas piping. Our team installs fixtures, backflow prevention devices, water heaters, and sump pumps while ensuring code compliance.
Stormwater Management
Our stormwater services include bioretention ponds, trench drains, catch basins, and HDPE piping systems. We design solutions to manage runoff, prevent flooding, and promote water reuse for sustainable infrastructure projects.
Site Utilities
We handle underground utilities like water mains, sanitary sewers, and storm laterals from public mains to buildings. Services include cast-in-place manholes, meter vaults, and public water main replacements for new and renovated properties.
Emergency Repairs
Our team provides urgent plumbing and utility repairs around the clock. With decades of experience, we resolve critical issues like leaks, blockages, and system failures promptly to minimize project delays and safety risks.
Tenant Fit-Outs
We deliver customized plumbing solutions for tenant spaces, including bathrooms, kitchens, and ADA-compliant fixtures. Our work integrates seamlessly with commercial renovations while adhering to tight deadlines and regulatory standards.
Questions
What services does Sigma Plumbing Mechanical Contractors offer?
We provide interior plumbing, stormwater management, site utilities, emergency repairs, and tenant fit-outs for commercial and residential projects.
What areas do you serve?
We operate throughout Washington DC, Maryland, and Northern Virginia, with expertise in local regulations and infrastructure.
Are you available for emergency plumbing services?
Yes, our team is available 24/7 to address urgent plumbing and utility issues promptly.
What certifications does your company hold?
We are a Washington DC Certified Business Enterprise (CBE), meeting rigorous quality and compliance standards.
How long has your company been in business?
Our family-owned business has operated in Washington DC since 2010, with over 50 years of combined industry experience.
Can you handle complex infrastructure projects?
Yes, we specialize in multi-trade contracting for schools, apartment complexes, and public spaces with tight deadlines and technical challenges.
