Structural Engineering
Safe, efficient, buildable structures, from steel frames and extensions to alterations of existing buildings.
The right structural solution is the one that's safe, economical and straightforward to build. We design and deliver steel and concrete structures, extensions and alterations, working closely with architects and our own construction teams.
Doing the design and the build under one roof removes the gaps where problems usually hide.
Cornerstone Group's chartered structural engineers work with property developers, architects, contractors and asset managers across the UK, delivering structural design, assessment and compliance services.
What’s included
Our structural engineering services
- Structural design: new-build and refurbishment across steel, reinforced concrete, timber and masonry; analysis and calculation packages, foundation design, frame design and BIM-coordinated design.
- Structural assessments and investigations: condition surveys and appraisals, load capacity and serviceability assessments, RAAC assessment and advisory, and structural monitoring.
- Design assurance, reviews and third-party audits: independent design reviews, calculation checks, peer review and design audit reports for insurers or lenders.
- Structural defect remediation: defect diagnosis and failure investigation, repair specification, and post-repair inspection and sign-off.
- Building Safety Act compliance: for higher-risk buildings (18m+): Building Safety Case preparation, Gateway 2 and 3 submissions and Competent Person documentation.
- Retrofit and refurbishment: feasibility studies for change of use and extension, adaptive reuse, load redistribution and strengthening.
Why use our structural engineering services
One firm for your entire project across civil and QA services; engineers who work closely with your architects; up-to-date expertise on the Building Safety Act, Gateway 2 and 3 and Competent Person requirements; and sustainability considered from the outset, retaining existing frames, reducing steel tonnage and choosing lower-carbon materials. Our engineers hold MIStructE, MICE and CEng credentials.
Seen in our projects.
Built from the ground up.
Groundworks, structures and utilities delivered by our own site teams.
Guides and project stories.
Project spotlightProject spotlight: Greater Lancashire Hospital theatre expansionA new operating theatre, air-handling unit and backup generator, designed and built around a live hospital with minimal disruption.Read the article 
Project spotlightProject spotlight: Fober Farm 17th-century barn restorationRestoring a 17th-century barn in the Forest of Bowland with traditional techniques, so it can work again for a farming family.Read the article 
Project spotlightProject spotlight: Ye Horns Inn restoration and extensionHow a Grade II listed country pub that had fallen into disrepair was restored, extended and re-established as a community hub.Read the article Power your business with solar.
Our renewables team designs, installs and maintains commercial solar, storage and EV charging across the North West and the UK.
Structural engineering questions answered.
Can't see your question here? Our team is happy to talk it through.
What structural work do you design and build?
We design and deliver steel frames, reinforced concrete structures, extensions and new bays, and structural alterations and openings. Our design work covers steel, reinforced concrete, timber and masonry for both new build and refurbishment.
Can you assess an existing building, including for RAAC?
Yes. We carry out condition surveys and appraisals, load capacity and serviceability assessments, RAAC assessment and advice, and structural monitoring. Where we find defects, we can diagnose the cause, specify repairs and inspect and sign off the finished work.
Can you help with Building Safety Act requirements?
Yes. For higher-risk buildings of 18m and above, we prepare Building Safety Cases, Gateway 2 and 3 submissions and Competent Person documentation.
Do you provide independent design reviews?
Yes. We carry out independent design reviews, calculation checks, peer reviews and design audit reports for insurers or lenders.
What qualifications do your structural engineers hold?
Our engineers are chartered and hold MIStructE, MICE and CEng credentials. They work closely with your architects and consider sustainability from the start, for example by keeping existing frames, using less steel and choosing lower-carbon materials.
Let's talk about your next project.
One call reaches the whole group. Tell us what you need and we'll bring the right teams together.
