• Semi-permanent Modular Buildings

    Our Modular Buildings are manufactured in house to your specific requirements. SiBCAS provides high end modular accommodation.

Quality guaranteed – Our high quality modular buildings stand the test of time.

Spacious Modular Buildings

SiBCAS specialises in providing high-end modular buildings including classrooms, health centres, office space and sports facilities, that combine the comfort and reliability of a permanent building with the flexibility of being relocatable.
We have an excellent range of portable buildings for sale or hire across the UK.

We’ve got it covered


Construction sites require safe, secure and efficient site accommodation for workers and management alike. As ever more complex health and safety legislation is enforced on operational building sites, it pays to have the highest quality portable cabins for project offices, planning rooms, canteens and workers’ welfare facilities.

Read more about our Site accommodation options

Read more about our Modular accommodation options

Construction units

Quality Modular Buildings Guaranteed

Permaspace is our flagship product: a high standard of temporary modular cabins that is put to excellent use by clients across the professional spectrum, for both short and long term requirements. Based on a modular plan, the buildings are designed and assembled from scratch to your specific requirements at a SiBCAS production site. They are then delivered and installed for hire or sale. Modular buildings can be linked or stacked in a variety of combinations, making them the ideal choice for everything from project offices and classrooms to doctor’s surgeries and sports facilities.

BS 9001:2008 quality accreditation assures our clients that all modular buildings are constructed to the very highest standards. We make certain every single detail meets your requirements, from the drafting of drawings, aided by the latest architectural 3D planning technology, to advanced structural calculations.

We are proud of the fact that all of our modular buildings are manufactured in-house within our new, high-tech factory facility, and are delivered using our own fleet of commercial vehicles. This allows us to offer a prompt and reliable service.

SiBCAS Quality Modular Buildings Guaranteed, UK
SiBCAS Site Builder Constructs Portable Building UK
SiBCAS Modular Building Site Installation UK

Modular Buildings – Easy Installation

Once on site, our fully-trained operators are able to offload modular buildings in an efficient and safe manner, backed up by fully-qualified, in-house tradesmen for any installation requirements. We offer a comprehensive site package, with our own team of painters, plumbers, joiners and electricians to carry out any work on site, including mains connections.


Our experienced team takes care of all of your modular buildings requirements, including submissions to local authorities across the UK. The team helps you choose, and also supplies, all interior amenities, including carpets and furniture, leaving you to simply pick up the keys.

An Image of a toilet with pink background from the SiBCAs modular construction project for Sheffield Hallam University

Why choose a modular building rather than traditional build?

  • Off-site manufacture – less disruption on site
  • Portable buildings can be installed quickly
  • Ease of expansion – modular cabins can be added if required
  • Low capital costs as rent on buildings can be paid monthly
  • Buildings can be relocated if required
  • Quick and easy removal of buildings at the end of the hire period

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Our Accreditations