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Complete Steel Building Solution

Design Engineering Manufacturing Worldwide Delivery Site Support

Structural engineering

Stainless steel structures

Hybrid steel structures

Carbon steel structures

Complete Steel Building Solution

Structural engineering

Stainless steel structures

Hybrid steel structures

Carbon steel structures

Complete Steel Building Solution

Prefab Steel Building Kits: What’s Included

Q: What's the difference between a kit price and a finished building?

The kit price covers the structural package. Foundation, site work, interior finishes, utilities and erection labor are additional and vary by project.

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Structural engineering

Prefab Steel Building Kits: What’s Included

A prefab steel building kit is the complete, factory-cut structural package shipped to a project site — primary frame, secondary framing, cladding, fasteners and trim — engineered as one system and accompanied by stamped drawings, so the buyer supplies the foundation and labor rather than sourcing structural components separately.

What’s In a Typical Kit

Every steel building kit is engineered as a single matched system, so what ships together is determined by the building’s drawings, not assembled piecemeal from a catalog. The components below are common to nearly every kit, regardless of size or use.

Primary frame. Tapered or prismatic columns and rafters, pre-cut, pre-drilled and shipped in bundles labeled to match the erection drawings.

Secondary framing. Purlins, girts and bracing — the cold-formed members that tie the primary frame together and support the cladding.

Cladding and trim. Roof and wall panels, along with the flashing, trim and closures needed to weatherproof every edge, corner and penetration.

Fasteners and accessories. Self-drilling screws, bolts, sealants and washers sized and counted for the specific building, plus doors, windows and ventilation components specified in the order.

Engineering package. Stamped structural drawings and calculations for the building as ordered, used to obtain a building permit and to guide foundation design.

Aerial view of a galvanized steel portal frame erected on a concrete slab in an open field

Inside a bolted steel portal-frame building, gable rafters and purlins above a poured concrete slab

Galvanized steel column bolted to the slab at the open gable end of a steel building frame

Steel building frame on a grass site with one side wall clad in corrugated metal sheeting

Included in the Kit

Not Typically Included

Structural frame & connections

Foundation (footings, slab)

Roof & wall cladding, trim

Site work (grading, utilities)

Fasteners & standard doors/windows

Interior finishes (drywall, flooring, HVAC)

Stamped engineering drawings

Erection labor (unless purchased separately)

Frequently Asked Questions

Does a steel building kit include the foundation?

No. Kits include the structural frame, cladding, and engineering drawings; the foundation is designed and built separately, sized to the kit’s actual column reactions and local soil conditions.

Do I need a contractor to erect a prefab kit?

Most kits are designed for erection by a licensed contractor or experienced crew following the supplied drawings; some smaller, lighter systems are marketed as owner-erectable, but code compliance and safety still call for qualified labor on anything beyond a small structure.

What’s the difference between a kit price and a finished building?

The kit price covers the structural package described above. Foundation, site work, interior finishes, utilities and erection labor are additional and vary by project — see our Steel Building Cost Guide for how those pieces typically break down.

Aerial view of a house under construction with light-gauge steel roof trusses being installed and wall panels stacked on site

Cold-formed steel roof trusses seen from inside the building, spanning above unfinished concrete walls

Unfinished interior with precast concrete wall panels, a window opening and hand tools on the bare slab

Almost finished building with metal roofing, bundles of steel purlins and precast panels stacked along the site road

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About

Licenses

People

News

Expertise

Design

Engineering

Manufacturing

Worldwide Delivery

Delivery

Site Support

Industries

Industrial & Manufacturing

Warehousing & Logistics

Agricultural Storage

Commercial Buildings

Cold Storage Shells

Aircraft Hangars

Equipment Shelters

Rural Processing

Multi-Storey Commercial

Infrastructure

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+855762413335, +79085570304, Phnom Penh, Toul Kork, Kingdom of Cambodia