At the heart of the Caledonian business is a commitment to delivering high-quality projects in a safe and sustainable manner.


The safety of our people and the operation of a safe working environment (both offsite and onsite) is our overriding priority. Through thorough training and continual reinforcement, we actively promote a positive awareness of health and safety and propagate best-practice within our culture.


Our offsite construction process is a highly sustainable method of building with completed projects inherently achieving high standards of energy efficiency. Typically, Caledonian buildings display excellent air tightness dynamics and are designed and built to meet enhanced insulation, acoustic and thermal properties in compliance with the latest building regulations and client requirements.

Our offsite building projects also minimise traffic movements, as modules are delivered to site with a high level of fit-out negating the need for site deliveries and high levels of onsite labour.

Committed to maintaining our ISO 14001 certification, our environment management systems are routinely audited by independent external bodies in conjunction with our internal team.

As many of the projects we deliver are long term investments for our clients, we understand that operating costs are as important as the capital cost. Working with our clients from early engagement, we constantly deliver projects that achieve FM cost targets and provide buildings that benefit from low running and maintenance costs.


Caledonian is committed to reducing waste as part of the design process and to recycling up to 100% of waste from our factories and construction sites. Currently 96% of factory waste is diverted from landfill by recycling through a MRF (Material Recycling Facility), re-using or converting to energy through a RDF (Refuse Derived Fuels) plant.

Quality assurance

Operating in a factory environment we are able to meticulously monitor processes and embed Quality Assurance at every stage of build. We have a zero tolerance policy on defects throughout our factories.

Quality inspections and final sign-off are completed as the modules are prepared for transport and thorough inspections are carried out upon arrival on site.

We are committed to producing quality buildings that maintain the highest standards throughout their lifespan.

Accreditation & Certification

Quality Systems

Certificate Number 17590

ISO 9001

Quality Management System ISO 9001 – Awarded for The Design, Manufacture, Installation of Pre-Engineered Modular Buildings and delivery of turn key projects as Principal Contractor.  Our Certification reassures our customers that Caledonian is fully committed to quality by continuously undergoing the scrutiny of an accredited third party certification body.


Certificate Number 17590

ISO 14001

Environmental Management System ISO 14001 is an international standard that provides a framework for organisations of any size to control and improve environmental performance via an Environmental Management System (EMS).


(Building Research Establishment’s Environmental Assessment Method)

Caledonian recognises the role of BREEAM in specifying the sustainability performance of a building across a broad range of categories, from energy and water usage to materials and waste. BREEAM accreditation is widely pursued on many of our building projects including residential apartments, hotels, and single living accommodation for military and prison personnel.


(Waste & Resources Action Programme):

Caledonian committed to WRAP’s ‘Halving Waste to Landfill’ initiative to support activities in our existing environmental policy.

Volumetric Case Study

RSME Minley Case Study

Defence SLAM CBA

Case Study Woolwich SLAM regeneration


(Forest Stewardship Council®) FSC® is an independent, non-profit, nongovernmental organisation, whose mission is to promote environmentally appropriate, socially beneficial, and economically viable management of the world’s forests.

In 2009 we were one of the first offsite construction companies to become FSC® certified in the UK.

Health & Safety

CHAS Accredited

Caledonian is accredited within the Contractors Health and Safety Assessment Scheme (CHAS) having demonstrated compliance with and sound management of current basic health and safety legislation.

SMAS Worksafe Contractor

Certified with Worksafe Contractor Membership as a Principal Contractor.


Members of The Royal Society for the Prevention of Accidents

Considerate Constructor

The majority of our projects are registered with the Considerate Constructor scheme, which provides a code of conduct framework and award scheme for construction projects



Working to promote significant improvements in quality, value and productivity across all sectors of the UK construction industry.

Construction Line

Leading procurement and supply chain management service, incorporating PAS 91:2013. Registration Number: 6813

Premier Guarantee

Caledonian is an approved system provider of metal framed systems under Premier Guarantee’s technical requirements, giving customers confidence in using our products and systems on sites registered with Premier Guarantee.

BoPAS  (certification process underway)

Assurances to the lending community that innovatively constructed properties will deliver a consistent performance over a determined durability of 60 years.