This 20ft prefab metal office building is a brand-new, USA-manufactured prefabricated structure measuring 20ft × 8ft (160 sq ft total) with a Slate Gray shiplap exterior cladding, providing a more refined residential aesthetic than standard corrugated steel container buildings. The unit includes a mini-split HVAC system — providing both heating and cooling from a single wall-mounted unit — wired to a 120V US-standard electrical system, making it plug-and-play ready for connection to a standard US mains supply without voltage conversion. This is a fully USA-manufactured product, built to US construction standards from the outset rather than a converted import container.

The interior is single-storey open-plan with a private enclosed room — suitable as a bedroom, dedicated office, or flexible-use space depending on your application. No bathroom is fitted, keeping the majority of the 160 sq ft floor area available as usable workspace or living area. The open floor plan allows the interior to be arranged and furnished to your specific requirements. The metal frame construction provides a solid, stable structure with minimal maintenance requirements and good resistance to weather and UV degradation.

The unit is delivered new and ready for assembly with minimal tools required — confirm exact assembly requirements and site preparation needs with JK Shipping LLC before delivery. As a prefabricated dwelling or office structure, this unit may be subject to local zoning, land use, and building permit requirements depending on your state and county. For guidance, refer to the US Department of Housing and Urban Development manufactured housing guidance and confirm requirements with your local authority before siting.

20ft Prefab Office Building — Dimensions & Specification

Standard Inclusions

• Prefabricated metal frame structure — Slate Gray shiplap exterior
• Mini-split HVAC system — heating and cooling
• 120V US-standard electrical system
• 1 private enclosed room
• Open-plan main area

What’s Not Included

• Mains electrical connection to site supply — licensed electrician required
• Bathroom or plumbing facilities
• Furniture or interior fit-out
• Site preparation or foundation
• Local authority zoning or building permits

Best Use Cases

• Remote home office or backyard studio
• Guest room or secondary sleeping space
• Hobby room, art studio, or creative workshop
• Small business office on residential or commercial property
• Tool and equipment storage with climate control

Also available: 20ft Container Home Office, 20ft Custom Container Office & Tiny Home, and Insulated Aluminium Tiny Prefab House on Wheels.

Every unit is inspected by JK Shipping LLC prior to dispatch.