Cleveland Sitesafe Ltd

Cleveland Sitesafe Ltd is a leading UK manufacturer of secure modular and portable buildings, trusted by construction firms, local authorities, utilities, education providers and industrial clients nationwide. With decades of engineering experience and a reputation for exceptional build quality, we specialise in designing and producing robust steel units that deliver long-lasting performance in the most demanding environments.

Based in Middlesbrough, our facilities are equipped to manufacture an extensive range of secure buildings, including tool stores, chemical and COSHH stores, welfare units, workshops, offices, gatehouses, bespoke modular units and multi-bay complexes. Every building is engineered with security, durability and practicality at its core. From fully welded steel shells to vandal-resistant doors, anti-tamper features and custom-fit internal layouts, our products are built to protect people, equipment and assets.

What sets Cleveland Sitesafe apart is our commitment to quality craftsmanship and tailored solutions. We understand that no two sites are the same, which is why we offer complete flexibility over size, layout, fittings and specification. Whether you require a compact storage unit or a fully equipped modular building system, our team works closely with you from design through to delivery to ensure the finished product meets your operational needs and industry standards.

Safety and compliance are fundamental to our manufacturing approach. All chemical and hazardous-substance stores are produced to meet COSHH regulations, with appropriate ventilation, bunded flooring and safety signage as standard. Welfare and office units are designed for comfort and productivity, featuring insulated walls, lighting, heating, electrics and optional furniture packages. Our modular buildings can also be linked or stacked to form larger setups, providing a cost-effective alternative to traditional construction.

Our customers value the reliability and longevity of our buildings. Many Cleveland Sitesafe units remain in service for 15–25 years, even under heavy daily use. We also offer delivery, installation and optional refurbishment services to maximise lifespan and support long-term site planning.

At Cleveland Sitesafe Ltd, our mission is simple: to manufacture secure, dependable and purpose-built modular solutions that help organisations operate safely and efficiently. With ongoing investment in our people, processes and production capabilities, we continue to set the standard for durable steel buildings across the UK.

If you’re looking for a secure, practical and long-lasting modular or portable building, Cleveland Sitesafe Ltd is the partner you can trust.