Buildings Modular – Bespoke Portable Cabin Classroom & Office

£211,975.00

Bespoke buildings modular ISO Frame units available as single, duo and trio configurations – all in stock and ready for despatch. Ideal as classrooms, offices or marketing suites, these high‑quality modular buildings feature insulated steel construction, full‑height glazing, commercial‑grade flooring and energy‑efficient electrics. Choose from three specifications (Standard, REI60 fire‑rated or Part L “A” energy rated) and a range of RAL colours to match your brand. Nationwide delivery and professional installation available.

Description

Bespoke Buildings Modular Solution for Classrooms, Offices and Marketing Suites

Single buildings modular garden office unit ready for fast delivery from KC Modular Buildings
Single buildings modular unit – modern garden office or compact marketing suite, in stock and ready for despatch.
Buildings modular duo double office unit with full height glazing and modern workspace interior
Buildings modular duo – double office unit providing extra workspace, in stock and ready for despatch.
This bespoke portable cabin is part of our high‑performance buildings modular range, designed for clients who need flexible, modern space delivered quickly. Whether you need a classroom, office, welfare facility or marketing suite, this modular building gives you a professional, energy‑efficient environment without the delays of traditional construction.
At KC Modular Buildings, we specialise in designing and manufacturing buildings modular solutions for schools, businesses, developers and public sector clients across the UK. Each unit is tailored to your layout, specification and branding, so you get a space that works perfectly for your project.

Why choose this buildings modular solution?

This bespoke modular building combines speed, quality and long‑term value:
  • Flexible layouts – Configure your space as an open‑plan classroom, office, meeting area or multi‑room marketing suite. Internal walls, doors and glazing can be positioned to suit your needs.
  • High‑performance envelope – Steel frame construction with insulated sandwich panels provides excellent thermal performance and year‑round comfort.
  • Energy‑efficient design – Fully insulated walls, roof and floor, plus double or triple‑glazed windows, help reduce heating and cooling costs.
  • Fast delivery and installation – Our buildings modular approach means most work is completed off‑site, minimising disruption and speeding up your programme.
  • Built to last – Durable materials and quality‑controlled manufacturing ensure a long service life and low maintenance.
For larger schemes, multiple modules can be linked together to create a complete buildings modular complex.

Typical uses for this modular building

This bespoke portable cabin can be configured for many applications:
  • Education: Temporary or permanent classrooms, breakout spaces, staff rooms or SEND provision.
  • Commercial: Open‑plan offices, project offices, meeting rooms and training spaces.
  • Construction & infrastructure: Site offices, welfare facilities, induction rooms and canteens.
  • Marketing & sales: High‑impact marketing suites, showrooms and sales offices with branded façades and feature glazing.
To explore more examples of how clients use our buildings modular solutions, visit our
Modular Buildings page and browse related products.

Key features and specification

Every project is bespoke, but a typical specification for this buildings modular unit includes:
  • Robust steel frame structure with high‑quality insulated panels
  • Durable external finish in your chosen RAL colour, with optional cladding accents
  • Double or triple‑glazed windows and secure external doors
  • Fully finished interior with hard‑wearing flooring, modern wall finishes and LED lighting
  • Electrical installation to current regulations, with sockets, data points and emergency lighting as required (in line with current
    BS 7671 wiring regulations)
  • Heating, cooling and ventilation options tailored to your use and budget
  • Accessible entrance and internal layout designed to meet relevant regulations
If you need to meet specific education, healthcare or commercial standards, our team can design your buildings modular solution accordingly.

Why work with KC Modular Buildings?

Choosing KC Modular Buildings for your buildings modular project gives you:
  • Turnkey service – From initial concept and design through to manufacture, delivery and installation.
  • Proven quality – Our processes are supported by recognised ISO certifications and strict quality control.
  • Design support – We can work with your architect or provide layouts, 3D visuals and technical drawings in‑house.
  • Nationwide coverage – We supply and install modular buildings across the UK.
You can learn more about our company, standards and approach on our
About KC Modular Buildings page.

Buildings modular trio triple unit with large glazed frontage used as a modern office and marketing suite
Buildings modular trio – triple unit modular building for larger offices or premium marketing suites, in stock and ready for despatch.

Next steps – get a quote for your buildings modular project

Ready to discuss your buildings modular requirements?
Send us your drawings, brief or ideas and we’ll design a bespoke solution for you.
Contact our team today to request a quotation or arrange a consultation.
 

Bespoke Buildings Modular Solution – Three ISO Frame Options

This bespoke portable cabin is part of our buildings modular range, designed for clients who need flexible, high‑performance space delivered quickly. Whether you’re planning a classroom, office, welfare facility or marketing suite, this modular building can be tailored to your layout, specification and budget.
To give you full control over performance and compliance, this product is available in three ISO Frame options:
  1. Standard ISO Frame Unit – robust, cost‑effective buildings modular solution
  2. ISO Frame REI60 Fire‑Rated Unit – enhanced 60‑minute fire resistance
  3. ISO Frame Part L “A” Energy Rated Unit – upgraded, highly insulated, Part L compliant
All three options are manufactured to strict ISO standards and can be finished in a range of RAL colours to match your brand or site requirements.

Manufacturing standards you can trust

Our buildings modular units are produced under rigorous quality systems, including:
  • ISO 9001 – Quality Management
  • ISO 1090 – Steel Structures
  • ISO 3834 – Welding Quality
  • ISO 14001 – Environmental Management
  • ISO 27001 – Information Security
  • ISO 22301 – Business Continuity
  • ISO 8501 – Surface Preparation
This ensures consistent quality, durability and traceability across every modular building we deliver.

Colour options – frame and wall panels

You can customise the appearance of your modular building with a wide choice of RAL colours:
Frame RAL options:
  • RAL 3000 – Flame Red
  • RAL 5010 – Gentian Blue
  • RAL 7016 – Anthracite Grey
  • RAL 7035 – Light Grey
  • RAL 9002 – Grey White
  • RAL 9010 – Pure White
Wall panel RAL options:
  • RAL 5010 – Gentian Blue
  • RAL 7016 – Anthracite Grey
  • RAL 7035 – Light Grey
  • RAL 9002 – Grey White
  • RAL 9010 – Pure White
This flexibility makes the unit ideal as a buildings modular classroom, office or marketing suite that reflects your brand.

Doors, windows and flooring

Flooring
  • 2mm PVC commercial‑grade floor covering
  • Grey colour lining
  • Sealed joints
  • Grey PVC floor strips
Windows
  • PVC frame construction
  • RAL 7016 exterior, white interior
  • U‑value: 1.1 W/m²K
Doors
  • DDA PVC glazed door
    • RAL 7016 exterior, white interior
    • Dimensions: 1150 x 2100mm
    • Insulated glazing with horizontal division
    • Security: lock cylinder with 3 keys, signboards, door handles
  • Steel single door
    • RAL 7016 exterior, white interior
    • Dimensions: 900 x 2000mm
    • Thermally insulated
    • Security: lock cylinder with 3 keys, signboards, door handles

1) Standard ISO Frame Buildings Modular Unit – Specification

A robust, stackable buildings modular unit ideal for offices, classrooms and welfare facilities.
Construction
  • Steel container supporting structure made of cold‑bent profiles
  • Joined by bolts (flat‑pack) according to EN ISO 3834‑2 and EN 1090‑1
  • Steel frame abrasively blast‑cleaned to Sa 2.5 according to EN ISO 8501‑1
  • Transport handles (ISO openings) located in the corners
  • Stackable up to three floors
Roof (layered)
  • 0.5mm galvanised steel sheet
  • 10mm chipboard
  • 100mm mineral wool
  • Polyethylene vapour barrier
  • 8mm laminated board, white
  • Rainwater drainage via waterspout in container frame with downpipes in corner posts
  • Roof load capacity: 1.6 kN/m²
Walls (sandwich panel)
  • External: 0.5mm varnished sheet, trapezoidal linear
  • Insulation: 80mm mineral wool
  • Internal: 0.5mm varnished sheet, smooth RAL 9010
Floor (layered)
  • 22mm P5 chipboard
  • 100mm mineral wool insulation
  • 0.5mm galvanised low‑fold sheet metal
  • Floor load capacity: 2000 kg/m²
Electrical installation
  • Prepared in accordance with UK standards
  • Convector electric heaters
  • 230V sockets
  • IP65 protective LED lamps 2 x 18W
  • Metal fuse board

2) ISO Frame REI60 Fire‑Rated Buildings Modular Unit

For projects where fire performance is critical, this buildings modular option provides 60‑minute fire resistance.
Fire resistance rating (REI60)
  • R – Load‑bearing capacity: 60 minutes
  • E – Integrity: 60 minutes
  • I – Insulation: 60 minutes
Construction & frame
  • Steel frame with closed‑circuit blasting chamber
  • Spray painted in cabin‑dryer
  • Stackable up to two floors
  • ISO standard transport handles at corners
Roof (layered)
  • 0.55mm galvanised steel sheet
  • 10mm fibre board
  • 60mm mineral wool
  • Polyethylene vapour barrier
  • 60mm layered board with wool (double‑sided white smooth sheet metal)
  • 2 x G‑K plasterboard
  • Rainwater drainage through corner post downpipes
  • Standard snow load: sk = 1.6 kN/m²
Walls
  • External: 0.5mm painted sheet metal, trapezoidal linear
  • Insulation: 120mm Rockwool
  • Internal: 0.5mm painted sheet metal, smooth RAL 9010
Floor (layered)
  • 20mm cement‑fibre board
  • Polyethylene film
  • 100mm mineral wool insulation
  • 0.5mm low‑corrugated galvanised sheet metal
  • Load capacity: 200 kg/m²
Electrical installation
  • Surface‑mounted system
  • 8 MOD safety metal switchboard (separate)
  • 230V power installation
  • IP65 protective LED lamps (2 x 18W)
  • Convector electric heaters

3) ISO Frame Part L “A” Energy Rated Buildings Modular Unit

This is our highest‑performance buildings modular option, designed to meet Part L building regulations with excellent thermal efficiency.
Roof (layered)
  • 0.5mm galvanised steel sheet
  • 10mm chipboard
  • 125mm PIR insulation
  • Polyethylene vapour barrier
  • 60mm mineral wool panel with varnished smooth metal sheet both sides
  • Rainwater drainage via waterspout in frame and downpipes in corner posts
  • Load capacity: 1.6 kN/m²
Walls
  • Layered panel construction
  • External: 0.5mm varnished sheet, trapezoidal linear
  • Insulation: 240mm mineral wool
  • Internal: 0.5mm varnished sheet, smooth RAL 9010
Floor (layered)
  • 20mm cement‑bonded particleboard
  • Polyethylene film
  • 120mm PIR plate insulation
  • 0.5mm galvanised low‑fold sheet
  • Second layer: additional polyethylene film, 120mm PIR plate insulation, 0.5mm galvanised low‑fold sheet
  • Load capacity: 200 kg/m²
Upgraded windows and glazed doors
  • Enhanced U‑value: 0.5 W/m²K
  • Anti‑vision glazing
  • Energy‑efficient double glazing
Electrical installation
  • Surface‑mounted system
  • 8 MOD safety metal switchboard (separate)
  • 230V power installation
  • IP65 protective LED lamps (2 x 18W)
  • 4.5 SCOP air‑to‑air heat pump with cooling

How this fits into your wider buildings modular strategy

This product can be used as a standalone unit or combined into larger buildings modular complexes. For more examples of our modular solutions, visit our
Modular Buildings page, or learn more about our company and certifications on the
About KC Modular Buildings page.
Electrical installations are designed in line with current UK regulations, including the
BS 7671 wiring regulations, giving you confidence in safety and compliance.
Ready to specify your buildings modular unit?
Contact our team with your preferred option (Standard, REI60 or Part L “A” Rated), layout and use case, and we’ll prepare a tailored quotation. 

Buy this buildings modular unit online

This buildings modular product is available to order directly through our secure WooCommerce shop
and is listed on Google Shopping for transparent pricing and fast checkout.

  • Single, Duo and Trio buildings modular units in stock and ready for despatch
  • Secure online payment and instant order confirmation
  • Nationwide delivery and professional installation available


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