Complete Mechanical Solutions for Commercial Tenant Improvements
Domco Mechanical provides HVAC, plumbing, and mechanical contracting services for commercial tenant build-outs throughout Maryland, Washington, D.C., and Northern Virginia.
Whether transforming an empty shell into a new business, renovating an existing tenant space, or adapting a property for a new use, our team provides the mechanical expertise required to bring the space together. Since 1998, we have worked with general contractors, property owners, developers, and businesses to coordinate commercial mechanical systems with the requirements of each project.
From HVAC modifications and rooftop equipment to plumbing, piping, ventilation, and equipment connections, Domco Mechanical can handle multiple mechanical scopes under one experienced contractor.








Mechanical Contracting for Tenant Build-Outs
Every tenant has different operational requirements. A space previously used as an office may become a restaurant, retail store, medical office, or another type of commercial facility—often requiring significant changes to the existing mechanical systems.
Domco Mechanical works with project teams to modify and install HVAC, plumbing, ventilation, piping, and related mechanical systems based on the requirements of the new space.
HVAC Systems
Installation and modification of commercial heating, cooling, ductwork, rooftop equipment, controls, and ventilation systems to accommodate the new tenant layout and use.
Ventilation & Ductwork
New ductwork and modifications to existing air distribution and ventilation systems to accommodate changes in floor plans, occupancy, and building use.
Commercial Plumbing
New and modified water supply, drainage, piping, fixtures, and equipment connections for restrooms, kitchens, employee areas, and other commercial spaces.
Mechanical Piping
Installation and modification of piping associated with commercial plumbing, HVAC equipment, and other mechanical systems.
Rooftop Units (RTU)
Installation, replacement, and modification of commercial rooftop HVAC equipment when existing systems cannot adequately support the requirements of the new tenant.
Equipment Connections
Mechanical and plumbing connections for commercial equipment, kitchen equipment, fixtures, appliances, and other specialized systems.

Tenant Build-Outs We Support
Restaurants & Food Service
HVAC, plumbing, ventilation, piping, and equipment connections for restaurants, commercial kitchens, bars, and food service facilities.
Offices
Heating, cooling, ductwork, plumbing, and mechanical modifications for offices and professional environments.
Retail
Mechanical systems for retail stores, shopping centers, storefronts, and other customer-facing commercial spaces.
Hospitality
HVAC and plumbing modifications for hotels, hospitality spaces, common areas, and commercial amenities.
Commercial Properties
Mechanical improvements for existing commercial buildings undergoing renovations, expansions, or changes in occupancy.
Industrial Spaces
HVAC, ventilation, piping, and plumbing modifications for industrial and specialized commercial facilities.
- Planning a Commercial Tenant Build-Out?
Whether you’re a general contractor preparing a new space, a property owner getting ready for a new tenant, or a business building out its next location, Domco Mechanical can provide the commercial mechanical services your project requires.
