What we provide
- Rear, side-return and wrap-around extensions
- Two-storey extensions and first-floor additions
- Foundation design, including near trees
- Steel beams and goalposts for wide openings and bi-folds
- Beam and block or solid ground floors
- Internal alterations and refurbishment design
When you need it
Extensions need foundations sized for your ground conditions, beams over new openings and connections back into the existing house. A well-coordinated structural design keeps the build moving and avoids costly changes on site.
What you receive
A site visit by an experienced engineer, clear calculations and drawings ready for building control, and answers to building control and builder queries about our design.
How it works
- Get in touchCall, WhatsApp, email or use the form. We reply within 24 hours.
- Approve your quoteYou see exactly what is included before any work starts.
- Site inspectionAn engineer visits, usually within 3 to 5 working days.
- Design deliveredCalculations and drawings, typically 10 to 12 working days later.
Frequently asked questions
Do you design foundations near trees?
Yes. We design foundations to NHBC guidance for building near trees, as on several of our Hertfordshire and Luton projects.
Can you give me a large open corner with bi-folding doors?
Often, yes. On our St Albans project we used steel cantilever beams to leave the corner fully open.
What do you need from me?
Your architect drawings or floor plans and a few photos are enough to give you a quote.
Areas we cover: Epsom, Leatherhead, Guildford, Woking, Reigate, Esher, Kingston upon Thames, Richmond, Wimbledon, Sutton, Croydon, Hitchin, St Albans, and across Surrey, South-West London and Hertfordshire.
