New & Used Modular Buildings For Sale

A modular building is a prefabricated structure built off-site in a factory environment and delivered to site ready for installation. Modules are typically steel-frame construction clad in insulated panels, with internal finishes, electrics and plumbing installed before delivery. The category ranges from single-unit jack-leg site cabins through to large multi-module complexes used as schools, offices, hotels, healthcare and residential buildings. Modular construction is increasingly used for permanent buildings, with modern designs routinely achieving 60+ year design lives, comparable to traditional construction.

The modular market spans manufacturers, hire companies and refurbishment specialists. The Commercial Trader brings them together in a single platform with direct seller contact and transparent specification.

• Direct seller contact: every listing includes seller details for discussion of size, condition, services, transport and installation.
• New and used options: from new-build modular for long-term use through to ex-hire stock for cost-efficient short-term needs.
• Wide supplier network: stock from established UK modular manufacturers, national hire fleets and specialist refurbishers.
• Free to list, free to browse: standard seller listings are free for six months, supporting competitive pricing.

Why buy a used modular building?

Used modular buildings are the fastest, most cost-effective route to on-site accommodation for many projects.

• Significant cost savings: ex-hire and used modular stock typically costs 40-70% less than new-build equivalents.
• Immediate availability: new-build modular can take 8-16 weeks to manufacture. Used stock is usually deliverable within 1-2 weeks.
• Refurbishment options: many suppliers offer refurbishment services (new flooring, paint, kitchens, partitioning) bringing used units to near-new condition.
• Sustainability: reusing existing modular stock reduces embodied carbon and supports circular construction targets.
• Easy relocation: once finished with, used modular buildings retain resale value and can be moved to the next project.

Office and education modular buildings

Office and education modular buildings cover site offices, classrooms, meeting rooms, exam halls and administration blocks. Configurations range from open-plan single units up to multi-module complexes with partitioned offices, teaching spaces and breakout areas. Look for heating, double glazing and good insulation if planning long-term occupation.

Catering modular buildings

Catering modular buildings include site canteens, kitchen units, mess rooms and event catering cabins. Units typically come with commercial extraction, hot/cold water, stainless steel worktops and HACCP-compliant surfaces. Ideal for construction welfare, event catering and temporary food service.

Toilet, shower and washroom modular buildings

Toilet, shower and washroom modular buildings meet CDM welfare requirements on construction sites and provide sanitation at events, temporary workplaces and accommodation. Options range from single-cubicle portables through to multi-shower and disabled-access blocks.

Living and sleeping modular buildings

Living and sleeping modular buildings range from basic bunkhouse accommodation for site workers up to fully-furnished show homes and single-bed residential units. Check insulation and heating spec carefully, as overnight use demands higher thermal performance than daytime occupation.

Bar modular buildings

Bar modular buildings support hospitality, pop-up bars, festival service and outdoor events. Timberclad and bespoke-finish options are widely available where aesthetics matter for branded experiences.

Exhibition, retail and event modular buildings

Exhibition, retail and event modular buildings serve pop-up retail, exhibitions, sales suites, sporting venues and outdoor events. Branded finishes, glazed shopfronts and modular configurations support fast deployment.

• Dimensions: modular building sizes are typically quoted in feet (e.g. 32ft x 10ft). Check usable internal dimensions after wall thickness and any partitioning.
• Construction and insulation: steel-frame jack-leg cabins suit short-term hire; fully insulated modular units are needed for overnight use or year-round occupation.
• Services: check what’s included. Lighting, heating, air conditioning, plumbing, data cabling and electrics add significant value and avoid on-site retrofitting.
• Interior finish: plasterboard or timber linings are more durable than vinyl. Flooring should match intended use (vinyl for kitchens/washrooms, carpet tiles for offices).
• Transport and craneage: factor in delivery and lift-in costs. Larger units need HIAB cranes or self-loading lorries; multi-module complexes need mobile cranes.
• Planning permission: short-term site use is typically permitted development; permanent installations usually require planning approval. Check local authority guidance early.
• Building Regulations: permanent modular buildings need Building Regs compliance covering structure, fire, energy efficiency, accessibility and electrical safety.

• Construction and civil engineering: site offices, welfare cabins, canteens and toilet blocks are essential welfare provision under CDM Regulations on every UK construction site.
• Education: modular classrooms and school extensions provide fast, cost-effective capacity increases without lengthy traditional builds.
• Healthcare: GP surgeries, clinics, ward extensions and diagnostic centres use modular construction to deliver clinical space quickly.
• Events and hospitality: bar cabins, catering units and VIP hospitality suites support festivals, sporting events, weddings and outdoor venues.
• Retail and commerce: pop-up shops, exhibition stands and sales suites use modular construction for flexible, relocatable retail space.
• Accommodation: temporary workforce housing, rural lodges and emergency accommodation rely on modular units for fast deployment.

The Commercial Trader features modular buildings from suppliers across the UK. Use our distance filter to find units near your site, particularly important on larger modular packages where haulage and craneage add up quickly.

It varies. Construction site accommodation is usually covered under permitted development for the duration of the project. Short-term temporary uses may be allowed without planning approval. Permanent modular buildings (classrooms, offices, residential units) typically require planning permission and Building Regulations compliance. Always check with the local planning authority before buying or installing.

It depends on construction quality and use. Basic jack-leg site cabins typically last 10-15 years with regular maintenance. Mid-spec modular offices last 20-30 years. High-spec permanent modular buildings, built to Building Regulations with full insulation and sprinkler systems, can last 60+ years, comparable to traditional construction.

As we operate as a marketplace, any returns policy must be agreed directly with the seller before purchase. Pre-purchase inspection is strongly recommended, particularly for used units, to check structural condition, services and weatherproofing.

The Commercial Trader covers far more than just one category. Explore the full marketplace, with thousands of listings across vehicles, machinery, equipment and furniture:

• New and Used Commercial Trucks
• New and Used Commercial Vans
• New and Used Buses & Coaches
• New and Used Commercial Trailers
• New and Used Marine Commercial Equipment
• New and Used Aviation & Drones
• New and Used Plant Machinery
• New and Used Farm Machinery
• New and Used Smart Technology
• New and Used Industrial Machinery
• New and Used Commercial Laundry
• New and Used Commercial Printers
• New and Used Shipping Containers
• New and Used Catering Equipment
• New and Used Solar, Wind and Storage
• New and Used Commercial Furniture

We list a range of modular building sub-categories, including:

• New and Used Commercial Bar Modular Buildings
• New and Used Commercial Catering Modular Buildings
• New and Used Commercial Exhibition, Retail & Events Modular Buildings
• New and Used Commercial Living & Sleeping Modular Buildings
• New and Used Commercial Office & Education Modular Buildings
• New and Used Commercial Toilet, Shower & Washroom Modular Buildings
• New and Used Other Commercial Modular Buildings