20 commercial construction trades. Bid invitations nationwide.

CSI 03

Concrete

Concrete contractors handle cast-in-place concrete, precast elements, and concrete finishing for fou

CSI 04

Masonry

Masonry contractors specialize in brick, block, stone, and glass masonry units for structural and ve

CSI 05

Structural Steel

Structural steel contractors fabricate and erect steel framing, columns, beams, and decking for comm

CSI 06

Carpentry & Framing

Carpentry and framing contractors provide rough and finish carpentry including wood framing, sheathi

CSI 07

Waterproofing & Dampproofing

Waterproofing contractors install below-grade and above-grade moisture protection systems including

CSI 07

Roofing

Roofing contractors install and replace low-slope and steep-slope roofing systems including TPO, EPD

CSI 07

Insulation

Insulation contractors install thermal and acoustic insulation for walls, roofs, and mechanical syst

CSI 08

Doors & Hardware

Doors and hardware contractors supply and install commercial doors, frames, and finish hardware incl

CSI 08

Glazing & Curtain Wall

Glazing contractors fabricate and install curtain wall systems, storefront framing, architectural gl

CSI 09

Drywall

Drywall contractors install metal stud framing, gypsum board systems, shaft wall assemblies, and fir

CSI 09

Flooring

Flooring contractors install resilient flooring, carpet, ceramic and porcelain tile, hardwood, polis

CSI 09

Painting & Coatings

Painting contractors apply interior and exterior paint, stain, and specialty coatings to walls, ceil

CSI 09

Acoustic Ceilings

Acoustic ceiling contractors install suspended ceiling grid systems, acoustic tiles, and specialty c

CSI 23

Mechanical / HVAC

Mechanical and HVAC contractors design and install heating, ventilation, air conditioning, and refri

CSI 22

Plumbing

Plumbing contractors install domestic water, sanitary, storm, and gas piping systems along with fixt

CSI 21

Fire Protection

Fire protection contractors design and install automatic sprinkler systems, standpipes, fire suppres

CSI 26

Electrical

Electrical contractors install power distribution, lighting, low-voltage systems, and emergency powe

CSI 31

Earthwork & Grading

Earthwork and grading contractors perform site clearing, excavation, cut-and-fill operations, compac

CSI 32

Paving & Site Concrete

Paving contractors install asphalt and concrete paving for parking lots, roads, sidewalks, and plaza

CSI 32

Landscaping

Landscaping contractors install exterior planting, irrigation, site furnishings, and hardscapes for