Four hundred and sixty-four permits. One phone number.

A Chicago mechanical and general contractor since 2002. HVAC, commercial renovation and tenant build-outs, delivered under our own Class C licence out of Bridgeport.

(312) 961-9291 Request a bid

Licensed since 2002
General Contractor Class C
Commercial & institutional

Licensed since 2002Unbroken, City of Chicago
General ContractorClass C licence
Mechanical & HVACOur own crews
Bridgeport2839 S Archer Ave

What we do

Services

Everything below is work we do ourselves, in Chicago and the surrounding area.

HVAC installation

Rooftop units, split systems and full mechanical fit-outs for commercial buildings, sized on a load calculation rather than on what came out.

Load calculations
Rooftop units
Ductwork
Controls & commissioning

HVAC service & replacement

Replacement of failed or end-of-life plant, and service work on systems we did not install, with the disruption planned around your tenants.

Plant replacement
Preventive service
Phased shutdowns
Emergency repair

Commercial renovation

Whole-building and floor-by-floor renovation held under one contract, coordinated so the mechanical work does not become somebody else’s problem.

Single point of contract
Trade coordination
Permit filing
Occupied buildings

Tenant build-outs

Shell to finished space on a schedule that respects an opening date and a landlord’s access rules.

Space planning
ADA compliance
Landlord liaison
Out-of-hours work

Mechanical & piping

Process piping, boilers, pumps and distribution, the parts of a building that fail expensively when they are installed by the cheapest bidder.

Process piping
Boilers & pumps
Distribution
Testing & balancing

General contracting

Holding the whole job under our Class C licence, with the mechanical scope in-house rather than subcontracted and marked up.

Full GC scope
Scheduling
Subcontractor management
Closeout & O&M

Why us

Why Interstate

What a property manager or a general contractor actually wants to know before putting a firm on a bid list.

Licensed with the City of Chicago continuously since 2002, thirty-four consecutive renewals on the public record.

Mechanical work done by our own people, not brokered out to whoever is free that week.

General Contractor Class C, so we can hold the whole job rather than one trade of it.

Typical permit around $80,000 and 464 of them filed. That is the size of job we run every week, big enough to matter, small enough that you are not the smallest project on the board.

Occupied buildings, phased work and out-of-hours access. Most of what we do is renovation around tenants who cannot move out.