We produce the structural calculations for extensions, loft conversions and alterations across Northampton. You receive a complete PDF pack ready for Building Control approval and your builder to use.
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Northampton • Residential structural specialists
Structural Engineer Northampton for home extensions, lofts and wall knock-throughs
★★★★★
5/5 rating from homeowners
Structural Engineer Northampton services designed to get your build approved. We calculate the steel beams, roof structures and extension foundations you need, covering everything from Victorian terraces to modern detached homes.
Most of our work arrives via recommendation from local builders and architects who appreciate clear calculations that are easy to build from.
- Local property expertise – familiar with the typical terraces in Abington, semis in Wootton and townhouses in Far Cotton.
- Complete structural pack – including beams, padstones and bearing details so your builder has the full picture.
- Clear English explanations – ensuring you, the architect and the contractor all understand the design.
We support homeowners, developers and builders across Northampton, Wellingborough, Kettering, Corby and the wider county.
Structural engineer Northampton fees and costs
Guide prices for standard residential jobs. Email us your plans for a firm, fixed-fee quote.
RSJ
Wall removal calculations from £245.
EXT
Extension steel beams from £345.
LOFT
Loft conversion design from £395.
Costs vary based on complexity. We quote every job individually to give you the best price.
Services provided by our structural engineer Northampton team
The core services homeowners request when looking for a structural engineer near me in Northamptonshire.
Steel beam design
Calculations for removing walls, inserting bi-folds and supporting floors.
Loft conversion structures
Steel ridges, floor strengthening and dormer framing design.
Home extension supports
Steel posts and beams for single or double-storey additions.
Wall removal checks
Confirming if a wall is load-bearing and designing the support.
Roof and timber calcs
Joist sizing and roof structure design to modern standards.
Structural inspections
Reports on cracking, subsidence or existing structural issues.
How we work with Northampton homeowners
A straightforward process for getting your calculations, whether for a kitchen knock-through or a new floor.
1.Email your details
- Send over architect drawings or a sketch with measurements and the property address. We will check what is required.
- We confirm the scope of the structural design work.
2.Get a fixed quote
- We return a fixed price for the work.
- For most Northampton homes, we turn jobs around in 24 to 72 hours.
3.We do the calculations
- We produce the structural drawings and calculation sheets, creating a PDF pack for your inspector.
- If needed, we mark up your existing plans so everything is clear.
4.Approval support
- If the Building Control officer asks for clarification, we handle it directly as part of the service.
- We answer site queries from your builder during the works.
Why choose us for your project?
Key reasons local clients and builders recommend our services.
Fixed pricing
We set the fee upfront. No hourly rates or hidden costs for your structural design.
Quick turnaround
We aim to complete standard residential jobs within a few days of receiving the info.
Building Control ready
Our packs are designed to satisfy the inspector and give the builder exactly what they need.
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
“Great service for our loft conversion. The engineer turned the plans around fast and the price was exactly as quoted.”
Emma W – Duston
“Highly recommended. They dealt with a query from the inspector without charging us extra. Very helpful.”
Paul S – Weston Favell
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.
Common questions for a structural engineer Northampton
Answers to the things we get asked most often.
Do you need to come to the property?
Not always. For standard RSJs and extensions, good photos and plans are usually sufficient. If a site visit is critical, we will tell you before quoting.
What are the fees for a structural engineer in Northampton?
A single beam design usually costs a few hundred pounds. Larger extensions vary. We always provide a fixed quote once we see the drawings.
Are these calculations valid for Building Control?
Yes. We work to British Standards and Eurocodes. The output is a professional report designed for submission to your local authority or private inspector.
Start your Northampton structural project
If you are altering your home and need a structural engineer, send us the details. We will provide a fast, fixed-fee proposal.
Get a quote from a Structural Engineer Northampton
Fill in the form below. Your details go directly to an engineer for review.
Project details
Please provide as much info as possible so we can give you an accurate price.
We aim to reply to all local enquiries within 24 hours.
- Head Office: Corwell Lane, Uxbridge, England, UB8 3DE.
- 07359 267907
- info@structuralengineercalcs.com
- Company No: 12653163