Modular Building Explained
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What is Modular Construction?

What is modular construction?

Modular construction involves assembling complete buildings using individual factory-built modules. These steel-framed modules are manufactured to exacting tolerances under controlled factory conditions, where construction is not impeded by poor weather or adverse site conditions.

The modules are fully fitted with all electrics, plumbing, heating and internal finishes before they leave the factory. Once completed, they are transported to site by road, and then craned into position. Modules are then connected on site to create complete buildings, which can be of any size and have multiple storeys.

How are modular buildings constructed on site?

1. Individual factory-built modules are lowered into position by crane.

Factory built modules

2. As many modules as you need are added, side-by-side or end-to-end, to create the required building floor area.

As many modules as you need

3. A single building is created. Internal layouts can be designed to your exact specifications using partition walls, stairs and lifts.

A single building is created

4. Additional storeys, up to three storeys high, can be added to create as much space as you need.

Additional storeys

What are the benefits of modular construction?

Modular construction is fast becoming the building method of choice for organisations looking for rapid building completion, assured quality standards and minimal impact on the environment or the local area.

No other method of construction can match modular building for speed of delivery, reduced waste and disruption, and future flexibility.

  • Construction using refurbished, pre-owned modules can deliver buildings up to 70% faster than traditional site-based construction methods


  • Off-site construction minimises time on site – meaning less noise and disruption, as well as a cleaner, safer construction site
  • Cost and time certainty – modular building projects are not subject to weather-related delays or site-based skills shortages. In fact, Portakabin (Refurbished) has a track record of delivering 99% of buildings on time and on budget.1 This compares favourably with the construction-industry average of just 34% of projects completed on time and 58% on budget2


  • Future flexibility – modular buildings can easily be expanded, reduced, reconfigured or even relocated to meet your changing needs
  • Reduced waste – off-site construction generates up to 90% less waste than traditional on-site building methods3


  • Fewer vehicle movements – modular construction results in 90% fewer vehicle movements to, from and on the construction site,4 reducing transport-related emissions and disruption



1. UK Industry Performance Report 2011, Constructing Excellence/Glenigan.

2. UK Industry Performance Report 2011, Constructing Excellence/Glenigan.

3. Source: WRAP.

4. Source: Mtech.








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I Portakabin Limited, Yorkon House, New Lane, Huntington, York, YO32 9PT
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