Steel beam design
Calculations for removing walls, inserting bi-folds and supporting floors. RSJ beam guide
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150+ five-star reviews
Structural Engineer Northampton
Looking for a structural engineer Northampton homeowners and builders trust? We provide fixed-fee structural calculations from £245 for wall removals, loft conversions, extensions and structural alterations across Northampton and Northamptonshire. Building Control-ready within 24 to 72 hours.
- ✓ Local property expertise - familiar with typical terraces in Abington and semis in Wootton.
- ✓ Complete structural pack - including beams, padstones and bearing details.
- ✓ 24 to 72h turnaround on most residential Northampton projects.
- ✓ Building Control ready calculations every time.
Get a Quote
We respond to Northampton enquiries within 24 hours.
Structural Engineer Northampton: Fees and Costs (2026)
Most structural engineering jobs in Northampton cost between £245 and £1,500. Here are the 2026 typical fees for residential projects across Northampton and Northamptonshire. All fees are fixed and confirmed in writing before we start.
| Service | Typical Fee (2026) | What Is Included |
|---|---|---|
| Single RSJ beam calculation | £245 to £450 | Beam sizing, padstone design, masonry checks |
| Load bearing wall removal (engineer fee only) | £300 to £600 | Full Building Control calculation pack |
| Structural alterations Northampton | £300 to £900 | Chimney breasts, new openings, floor alterations |
| Loft conversion structural design | £395 to £1,200 | Floor joists, ridge beam, dormer supports |
| Home extension structural calculations | £600 to £1,500 | Beams, foundations, roof structure |
| Structural inspection and defect report | £400 to £900 | Cracks, subsidence, purchase reports |
Load bearing wall removal in Northampton from £300. Most kitchen knock-throughs are turned around the next working day. See our full guide to wall removal costs for the complete project budget including builder and steel.
Our Structural Engineering Services in Northampton
The core services homeowners request when looking for a structural engineer near me in Northamptonshire.
Loft conversion structures
Steel ridges, floor strengthening and dormer framing design. Loft conversion guide
Home extension supports
Steel posts and beams for single or double-storey additions. Extension design guide
Feedback for our structural engineer Northampton team
Comments from local people who have used our calculation services.
★★★★★
"Quick, professional and explained the technical bits clearly. Our builder had the steel specs he needed immediately."
Jason T, Kingsthorpe, RSJ for kitchen
★★★★★
"Great service for our loft conversion. The engineer turned the plans around fast and the price was exactly as quoted."
Emma W, Duston, Loft conversion
★★★★★
"Highly recommended. They dealt with a query from the inspector without charging us extra. Very helpful."
Paul S, Weston Favell, Extension and steels
Areas we cover near Northampton
We handle projects throughout the town and the wider county. Most work is done remotely from plans, but site visits are arranged if essential.
●Northampton
●Kettering
●Wellingborough
●Corby
●Rushden
●Daventry
●Towcester
●Market Harborough
●Milton Keynes (North)
●Oundle
●Brackley
●Higham Ferrers
●Irthlingborough
●Long Buckby
●Brixworth
Common questions for a structural engineer Northampton
Straight answers for Northampton homeowners and developers.
How much does a structural engineer cost in Northampton?
Most residential structural engineering jobs in Northampton cost between £245 and £1,500. A single RSJ beam calculation starts from £245. A load bearing wall removal is £300 to £600. A loft conversion structural design is £395 to £1,200. A home extension is £600 to £1,500. Structural alteration calculations start from £300. All fees are fixed and confirmed in writing before work begins. Read the full guide: structural engineer costs.
Do you need to come to the property in Northampton?
Not always. For standard RSJ beams and extensions, good photos and plans are usually sufficient for us to produce the full calculation pack. If a site visit is necessary, we tell you before quoting and include it in the fixed fee. Most Northampton residential projects are completed remotely from drawings, which keeps costs lower.
What are structural alterations and do I need a structural engineer in Northampton?
Structural alterations include any work that changes how your property carries load: removing a wall, creating a new opening, removing a chimney breast, raising a roof, or altering floor structure. Northampton Building Control require a structural engineer's calculation pack before approving any of these works. Our structural alteration calculations start from £300. See our guide to load bearing wall removals.
Are your calculations valid for Building Control in Northamptonshire?
Yes. We work to British Standards and Eurocodes and produce professional calculation packs designed for submission to Northampton Building Control, West Northamptonshire Council and any private approved inspectors in the county. The pack includes all beam sizing, padstone details and connection specifications your builder needs.
Do you cover all of Northamptonshire?
Yes. We cover the whole county including Northampton, Kettering, Wellingborough, Corby, Rushden, Daventry, Towcester, Brackley, Oundle, Higham Ferrers, Irthlingborough, Long Buckby and Brixworth. We also cover the border areas towards Milton Keynes and Market Harborough. Send your postcode and we will confirm the same day.
How long does a structural engineer take in Northampton?
RSJ and wall removal calculations are ready in 24 to 72 hours. Loft conversions and extensions take 5 to 7 working days. More complex structural alteration projects take 3 to 5 working days. We confirm the turnaround in writing when we give your fixed fee. More on our process: our turnaround.
What information do I need to send for a Northampton quote?
Your property address and postcode, plans or a simple sketch with dimensions, clear photos of the wall or area in question, and any existing architect drawings. For loft conversions or extensions, roof section details are helpful. Send them via our quote form or email info@structuralengineercalcs.com.
What structural issues are common in Northampton properties?
The most common structural issues in Northampton homes are lintel failure in Victorian and Edwardian terraces in St James and Abington, cracking caused by clay soil shrinkage in dry summers across the county, and floor joist problems in post-war semis. Northampton's geology, with its mix of Northampton Sand ironstone and clay, can cause differential settlement in older properties. We account for local soil conditions in every foundation and extension design.
Get a quote from a structural engineer Northampton
Fill in the form below. Your details go directly to an engineer for review.
Phone
Email
Response Time
Within one working day for most enquiries
Service Area
Northampton, Kettering, Wellingborough, Corby, Rushden, Daventry, Towcester, Oundle, Brackley, Higham Ferrers, Market Harborough and surrounding areas in Northamptonshire.
Many Northampton projects are designed from drawings, photos and simple measurements. If a visit is needed we explain this and add it to the quote.
Start your Northampton structural project today
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.
- Head Office: Corwell Lane, Uxbridge, England, UB8 3DE.
- 07359 267907
- info@structuralengineercalcs.com
- Company No: 12653163