Cambridge & Cambridgeshire
Looking for a structural engineer in Cambridge with clear, fixed prices? We handle structural alterations Cambridge homeowners need from £245 — RSJ beams, structural wall removals, loft conversions, hip-to-gable conversions and extensions. We also provide building inspection Cambridge services including structural foundation inspections and movement surveys across Cambridge and Cambridgeshire.
Cambridge has a wide mix of property styles. Romsey and Petersfield have tight Victorian terraces. Cherry Hinton and Chesterton have 1930s semis. Arbury and King's Hedges have post-war estates.
Families across these areas want open-plan layouts, bigger kitchen spaces, extra bedrooms in the loft and modern extensions. We provide the structural design behind those changes. You get clear calculations, tidy drawings and support with Cambridge, South Cambs and East Cambs Building Control.
Many Cambridge homes were altered over the years. We specialize in:
Most residential structural engineering work in Cambridge costs between £245 and £1,500. All fees are fixed and confirmed in writing before we start.
| Service | Typical Fee (Cambridge 2026) | What Is Included |
|---|---|---|
| RSJ Cambridge — single beam calculation | £245 to £450 | Beam sizing, padstone design, masonry checks |
| Structural alterations Cambridge | £300 to £900 | Wall removals, chimney breasts, new openings |
| Building inspection Cambridge | £250 to £600 | Foundation inspection, crack survey, movement report |
| Loft conversion structural design | £395 to £1,000 | Ridge beam, floor joists, dormer supports |
| Hip-to-gable conversion Cambridge | £600 to £1,200 | Gable wall, purlin removal, ridge beam design |
| Home extension steelwork | £500 to £1,500 | Beams, foundations, roof structure |
| Chimney breast removal | £350 to £700 | Load transfer, new beam design, padstone details |
We cover all common domestic alterations across Cambridge and surrounding areas.
We handle all structural alterations Cambridge homeowners need: structural wall removal in Cambridge, chimney breast removals, new openings and load-bearing changes. We design the exact RSJ size, padstones and bearings for Victorian terraces and modern builds alike.
Wall removal guide
Common across Romsey, Chesterton, and Waterbeach. We design new loft joists, ridge beams, dormer supports, and stair trimmers. We also specialise in hip-to-gable conversion Cambridge structural design, calculating the new gable wall, purlin removal and ridge beam loads. Loft conversion guide
Rear kitchen extensions in Trumpington, side extensions in Ely, or wraparounds in St Neots. We design the beams, joists, foundations, and roof supports.
Extension guide
Addressing overstretched joists in older terraces or rafters cut for old water tanks. We design purlins, dormer framing, and stair opening supports.
We provide structural engineer building inspection Cambridge services for homebuyers, landlords and extension projects. This includes structural foundation inspection Cambridge reports, crack and subsidence assessments, movement surveys and building engineer inspection reports for mortgage and planning purposes. Inspection report guide
We confirm a fixed price upfront for RSJ design, loft beams, extension packs, timber checks and structural alterations Cambridge projects. Prices start from £245. No hidden costs.
Local knowledge matters. These factors influence structural design and pricing.
We check for softer ground in parts of Cherry Hinton and Arbury which influences foundation design.
We assess Victorian and Edwardian layouts with mixed masonry to ensure correct load support.
We review Student HMO conversions across Romsey and Petersfield for earlier DIY alterations.
New builds in Trumpington and Cambourne often require tighter tolerances and lighter construction methods.
Rear extensions are often restricted by plot depth; we design practical structures to maximize space.
A clear set of structural calculations helps your project move smoothly through Building Control. Our packs are straightforward for both inspectors and builders.
Building Control: We work with Cambridge City, South Cambridgeshire, East Cambridgeshire, and Huntingdonshire District Council inspectors and provide direct responses to their questions.
A simple, transparent process to get your project moving.
A simple sketch or architect drawing (plus some photos) is enough to begin.
We provide a clear and straightforward price before we start.
We design the beams, joists, or foundations required for your build.
You receive a tidy document ready for your builder and Building Control.
If something changes on site, we review and update the design.
Feedback from recent local homeowners.
"Our knock-through in Romsey needed an RSJ. SECalcs made the whole process simple."
Romsey homeowner
"We added a dormer in Waterbeach. The calculations were clear and Building Control approved everything."
Waterbeach homeowner
"A movement crack in our Chesterton home was worrying us. SECalcs inspected it and gave us a practical repair plan."
Chesterton homeowner
We work across Cambridge and nearby towns, including:
Straight answers for Cambridge homeowners and developers.
Structural engineer Cambridge costs run from £245 to £1,500 for residential work. A single RSJ beam calculation starts at £245. Structural alterations Cambridge are £300 to £900. A building inspection Cambridge is £250 to £600. A loft conversion design is £395 to £1,000. A hip-to-gable conversion Cambridge is £600 to £1,200. Home extension steelwork is £500 to £1,500. A chimney breast removal is £350 to £700. All fees are fixed and confirmed before work starts. Full guide: structural engineer costs.
Structural alterations Cambridge projects we handle include: structural wall removal in Cambridge, chimney breast removals, new door or window openings in load-bearing walls, floor alterations, loft structural changes and any work that changes how a building distributes its load. Cambridge Building Control requires a structural engineer's calculation pack for all of these. Structural alterations Cambridge calculations start from £300. Wall removal guide.
Yes. We provide structural engineer building inspection Cambridge services for homebuyers, landlords and developers. This includes structural foundation inspection Cambridge reports where we assess bearing capacity, settlement and drainage issues around foundations. We also provide building engineer inspection Cambridge reports covering cracks, movement, subsidence and pre-purchase structural assessments. Building inspection Cambridge fees start from £250. Inspection report guide.
Yes. Hip-to-gable conversion Cambridge structural design is one of our loft conversion services. A hip-to-gable involves removing the existing hipped roof slope and replacing it with a vertical gable wall to create usable loft space. We calculate the new gable wall loads, purlin removal details, ridge beam design and any new support structure required. Hip-to-gable conversion Cambridge calculations start from £600 and the pack is ready for Cambridge Building Control submission.
Structural calculations for Cambridge Building Control are a professional PDF pack proving the design is safe and meets Building Regulations. For a wall removal the pack includes beam sizing, padstone design, masonry checks and connection details. For a loft conversion it includes ridge beam design, floor joist schedule and dormer framing. For a hip-to-gable it covers gable wall design and purlin removal. The pack is submitted to Cambridge City, South Cambs or East Cambs Building Control and used by your builder directly. Structural calculations guide.
Yes. We regularly work with Cambridge City, South Cambridgeshire, East Cambridgeshire and Huntingdonshire Building Control inspectors. We respond to any queries about our calculations as part of the service at no extra charge. Our packs are formatted to match what each council's inspectors expect.
Yes. Victorian and Edwardian properties in Romsey and Petersfield are a large part of our Cambridge work. We assess the mixed masonry construction typical of these terraces and check load distribution carefully before specifying beam sizes and padstones.
Yes. We cover all of Cambridgeshire including Ely, St Neots, Huntingdon, Newmarket, St Ives, Saffron Walden, March, Wisbech and Royston, as well as villages across South Cambridgeshire and East Cambridgeshire. Most projects are handled remotely from drawings and photos with no site visit required.
RSJ beams and single wall removals are ready in 24 to 72 hours. Structural alteration packs take 3 to 5 working days. Loft conversions and hip-to-gable conversions take 5 to 7 working days. Building inspection reports are issued within 3 to 5 working days of the site visit. The turnaround is confirmed in writing with the fixed-fee quote.
Fixed-fee structural calculations from £245. Building Control-ready in 24 to 72 hours. Call 07359 267907 or fill in the form and we will reply the same working day.
