Cambridge & Cambridgeshire
Looking for a structural engineer in Cambridge? We provide fixed-fee structural calculations from £245 for wall removals, structural alterations, loft conversions, hip-to-gable conversions, extensions and building inspections across Cambridge and Cambridgeshire. Building Control-ready within 24 to 72 hours.
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. We provide the structural design behind the changes families across these areas want — open-plan layouts, loft rooms, extensions and more.
We respond to Cambridge enquiries within 24 hours.
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 beam calculation Cambridge | £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, beam design, padstone details |
We cover all common domestic alterations across Cambridge and Cambridgeshire — from a single RSJ to a full loft or extension pack, plus building inspections.
All structural alterations Cambridge homeowners need: wall removals, chimney breast removals, new openings and load-bearing changes from £245. We design the exact RSJ size, padstones and bearings for Victorian terraces in Romsey and modern builds in Trumpington alike. Wall removal guide
New loft joists, ridge beams, dormer supports and stair trimmers for loft conversions across Cambridge and Cambridgeshire from £395. We also specialise in hip-to-gable conversion Cambridge structural design — see the dedicated section below. Loft conversion guide
Rear kitchen extensions in Trumpington, side extensions in Ely, wraparounds in St Neots. We design beams, joists, foundations and roof supports from £500. Full Building Control packs for Cambridge City, South Cambs and East Cambs. Extension guide
Structural engineer building inspection Cambridge services for homebuyers, landlords and developers. Structural foundation inspection Cambridge reports, crack and subsidence assessments, movement surveys and building engineer inspection reports from £250. Inspection guide
Overstretched joists in older Cambridge terraces, rafters cut for old water tanks, dormer framing and stair opening supports. We design purlins, upgraded floor systems and all timber structural elements included as part of loft and extension packs.
Fixed price confirmed upfront for every Cambridge project. RSJ calculations from £245. Building inspections from £250. Structural alterations from £300. Loft conversions from £395. No hidden costs, no hourly rates. We respond to Building Control queries at no extra charge.
Structural alterations is the term Cambridge Building Control uses for any work that modifies the load-bearing structure of your home.
Structural alterations Cambridge projects 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 before approving the work.
Our structural alterations Cambridge calculations start from £300 and include full beam sizing, padstone design and connection details — formatted for Cambridge City, South Cambridgeshire and East Cambridgeshire Building Control.
Victorian and Edwardian terraces in Romsey and Petersfield have mixed masonry construction and party walls that sometimes straddle property boundaries. We check load distribution carefully before specifying beam sizes and padstones for these properties.
Student HMO properties in Romsey and Petersfield often have years of unrecorded alterations. We check existing beams, modified walls and altered floor structures before designing anything new — a step that standard calculations often miss.
Hip-to-gable loft conversions are common in Cambridge's 1930s semis in Cherry Hinton, Chesterton, Arbury and Waterbeach. We provide full structural design from £600.
A hip-to-gable conversion replaces a sloping hipped roof end with a vertical gable wall, creating usable loft space. It is one of the most effective ways to add a full bedroom to a 1930s semi without a rear dormer. The structural challenges are the removal of the existing hip rafter, the design of the new gable wall structure, the purlin removal and the ridge beam that carries the redistributed roof loads.
Hip-to-gable conversion Cambridge calculations start from £600 and include the gable wall design, purlin removal details, ridge beam sizing and a full Building Control-ready pack.
1930s and 1950s semis with hipped roofs are particularly common in Cherry Hinton, Chesterton, Arbury, King's Hedges, Waterbeach and the surrounding villages of South Cambridgeshire. These properties have enough ridge height for a full bedroom once the hip is removed.
We work with Cambridge City, South Cambridgeshire and East Cambridgeshire Building Control on hip-to-gable submissions. If your property is semi-detached, we also flag the party wall implications for your party wall surveyor.
We provide structural engineer building inspection Cambridge services for homebuyers, landlords and developers across Cambridge and Cambridgeshire.
A structural engineer building inspection Cambridge report covers cracks, movement, subsidence, sagging floors and any structural concerns identified during a site visit. We produce a clear written report your insurer, mortgage lender or solicitor will accept.
Building inspection Cambridge fees start from £250 depending on the size of the property and the nature of the concern. A full structural inspection and report is £400 to £600.
A structural foundation inspection Cambridge report assesses bearing capacity, settlement and drainage issues around foundations. Cambridge's ground conditions — with pockets of softer ground in Cherry Hinton and Arbury — can cause differential settlement in older properties. We identify whether movement is historic or active and recommend next steps.
Building engineer inspection Cambridge reports are also used for pre-purchase assessments and are accepted by mortgage lenders. We work with Cambridge City, South Cambs and East Cambs Building Control on any remediation or extension work that follows.
Local factors that influence structural design and costs across Cambridge and Cambridgeshire.
Softer ground in parts of Cherry Hinton and Arbury influences foundation design. We check ground conditions for every extension and new opening.
Victorian and Edwardian layouts in Romsey and Petersfield have mixed masonry — we assess the actual construction before specifying beam sizes and padstones.
Student HMO properties across Romsey and Petersfield often have earlier unrecorded alterations. We check all existing structure before designing anything new.
New builds in Trumpington and Cambourne use lighter construction methods and tighter tolerances. We account for these in every beam and extension design.
Rear extensions are often restricted by plot depth in Cambridge city terraces. We design practical structures that maximise usable space within the available footprint.
A simple five-step process from enquiry to Building Control submission.
A simple sketch or architect drawing plus photos is enough to start.
We send a clear fixed fee in writing before any work begins.
We design the beams, joists or foundations required for your project.
A tidy PDF pack ready for your builder and Building Control.
We answer Building Control queries and update designs if needed on site.
Recent feedback from homeowners and builders across Cambridge and Cambridgeshire.
"Our knock-through in Romsey needed an RSJ and a Building Control pack. SECalcs made the whole process simple and the drawings were clear for our builder."
Romsey, Cambridge
"We added a dormer in Waterbeach and needed the full structural pack. Calculations were clear and Building Control approved everything first time."
Waterbeach, Cambridgeshire
"A movement crack in our Chesterton home was worrying us. SECalcs inspected it, explained exactly what was going on and gave us a clear repair plan."
Chesterton, Cambridge
We work across Cambridge and the wider Cambridgeshire region. Most projects are handled remotely from drawings and photos.
Straight answers for Cambridge homeowners, landlords and developers.
Structural engineer Cambridge costs run from £245 to £1,500 for residential work. A single RSJ beam starts at £245. Structural alterations Cambridge are £300 to £900. A building inspection Cambridge is £250 to £600. A loft conversion is £395 to £1,000. A hip-to-gable conversion Cambridge is £600 to £1,200. Home extension steelwork is £500 to £1,500. All fees are fixed and confirmed before work starts. Full guide: structural engineer costs UK.
Structural alterations Cambridge projects include: structural wall removal in Cambridge, chimney breast removals, new openings in load-bearing walls, floor alterations and loft structural changes. 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. Hip-to-gable conversion Cambridge structural design is one of our loft conversion services. 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.
Yes. We provide structural engineer building inspection Cambridge services for homebuyers, landlords and developers. This includes structural foundation inspection Cambridge reports, crack and subsidence assessments, movement surveys and building engineer inspection Cambridge reports for mortgage and planning purposes. Building inspection Cambridge fees start from £250. Inspection guide.
Structural wall removal in Cambridge means removing a load-bearing wall and replacing it with a steel beam (RSJ) to carry the loads above. Cambridge Building Control requires full structural calculations before approving this work. We design the beam size, padstones and bearings, and produce a Building Control-ready pack from £245.
For a wall removal: beam sizing, padstone design, masonry checks and connection details. For a loft conversion: ridge beam design, floor joist schedule and dormer framing. For a hip-to-gable: 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. 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.
Fixed-fee structural calculations from £245. Building Control-ready in 24 to 72 hours. Fill in the form and we will reply the same working day.
Fixed fees, fast turnaround and Building Control-ready calculations every time. Call us on 07359 267907 or fill in the quote form above and we will come back to you the same working day.
