Capabilities
Self-performed capabilities for federal construction.
General contracting backed by our own mechanical, civil and masonry crews and an in-house procurement desk.
Design-build & general contracting
Design-build and bid-build delivery for federal agencies, from permitting to operator training.
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Construction management
Scheduling, submittals, quality control and multi-party coordination.
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Flood control, levees & pump stations
USACE pump stations, PL 84-99 levee repairs and riprap.
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Mechanical & HVAC
Rooftop units, boilers, air handlers and fuel conversions for federal facilities.
Learn more →Plumbing & process piping
Domestic, process, steam and gas piping, supplied and installed by our own crews.
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Natural gas & utility work
Gas conversions, directional boring and utility tie-ins for federal campuses.
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Water & wastewater
Package plants, tertiary filtration and permitting, through operator training.
Learn more →Civil & site work
Excavation, concrete, paving, retaining walls and site utilities.
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Masonry & building envelope
Façades, lintels and structural masonry for occupied and historic buildings.
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Erosion control & riprap
Riprap, retaining walls and slope stabilization for USACE and Army sites.
Learn more →In-house materials procurement
Direct sourcing and Buy American documentation for federal projects.
Learn more →Overview
One contractor, self-performed trades
Federal buyers and primes look for two things in a construction partner: the ability to deliver the scope without passing it through, and a record of doing so for agencies like theirs. SIS self-performs mechanical, plumbing, civil, carpentry and masonry work and backs it with an in-house procurement desk.
Our work spans flood control for the U.S. Army Corps of Engineers, laboratory HVAC and historic masonry for USDA, wastewater design-build for the National Park Service, site work for GSA and facility repairs at Army and Air National Guard installations.
Frequently asked questions
What types of construction does SIS perform?
Design-build and general contracting, mechanical and HVAC, plumbing and process piping, natural gas and utility work, water and wastewater, civil and site work, flood control, masonry, erosion control and materials procurement.
Where does SIS work?
Primarily Illinois and Missouri, including Metro St. Louis, the Metro East and Kansas City, plus federal installations across the Midwest.
Teaming on a federal pursuit?
SIS self-performs these scopes for primes on veteran-owned, small-business and unrestricted procurements.