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Looking for a structural engineer Bristol homeowners and builders trust? We provide fixed-fee structural calculations from £245 for wall removals, loft conversions, extensions, structural alterations, ground beams and shallow foundations across Bristol and the wider Somerset area. Building Control-ready within 24 to 72 hours.
We respond to Bristol enquiries within 24 hours.
Most structural engineering jobs in Bristol cost between £245 and £1,500. All fees are fixed and confirmed in writing before we start.
| Service | Typical Fee (Bristol, 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 |
| 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 alterations | £300 to £1,500 | Openings, chimney removals, floor and roof modifications |
| Ground beam and shallow foundation design | £500 to £1,200 | Ground beam sizing, reinforcement schedule, foundation layout |
| Structural inspection and defect report | £400 to £900 | Cracks, movement, subsidence, purchase reports |
| Site visit (when required) | £250 to £400 | Most residential jobs handled remotely from drawings |
We provide residential, commercial, and specialist structural design and calculations across Bristol. Every project is completed or reviewed by a Chartered Engineer, ready for Building Control submission.
House Extensions and Alterations: Our team provides expert guidance and structural calculations to keep your project safe and compliant.
Loft Conversions: Transform your loft into a functional space. We assess the structural implications and design for maximum space and safety.
New Dwellings and Self Builds: We provide structural designs and calculations so your new home meets the highest standards.
Commercial New Build Schemes: From offices to retail, we deliver structural solutions that match your business needs.
Remodelling of Commercial Premises: We provide structural calculations and designs for Building Regulations approval.
Steel, Concrete, and Timber Frames: We assess your project requirements and recommend the most efficient frame type.
Structural Beam Design: Expert beam design for steel, timber, and glulam with full connection details.
Structural Surveys and Calculations: Surveys and calculation packs to support safe project decisions.
Retaining Wall Design and Surveys: Retaining wall design and RICS-aligned reporting.
We design structural supports, ground beams and shallow foundations for new builds, extensions and commercial projects across Bristol and the wider Somerset area.
Structural support design from £350
We design structural supports for beam ends, column bases, lintel replacements and temporary works across Bristol. Whether you need acrow prop calculations, padstone details or column base plates, we produce the full structural design pack ready for Building Control and your builder.
Ground beam calculations from £500
We design ground beams for extensions, new builds and where traditional strip foundations are not suitable. Bristol's variable ground conditions, particularly in areas with made ground or fill near the harbour and Avon valley, frequently require engineered ground beams. We produce full reinforcement schedules and setting-out details.
Foundation design from £450
We design strip, pad and raft foundations for domestic and light commercial projects across Bristol. Bristol soils vary from stiff clay and limestone in Clifton and Redland to softer alluvial soils near the Avon. We account for these conditions in every design.
Structural alteration calculations from £300
We provide structural calculations for all types of structural alterations in Bristol including load bearing wall removals, new openings, chimney breast removals, structural modifications to floors and roofs, and change-of-use alterations. Victorian terraces in Clifton, Redland and Bedminster and post-war semis across Horfield and Filton are our most frequent structural alteration types. See also: RSJ design Bristol and wall removal Bristol.
We provide structural calculations for structural alterations in Bristol across all property types. All structural alteration calculations are Building Control-ready and start from £300.
We design structural alterations for load bearing wall removals, new door and window openings, chimney breast removals, floor and roof modifications, and structural repairs to historic and period properties across Bristol. Victorian terraces in Clifton, Redland and Bedminster and post-war semis across Horfield and Filton are our most frequent structural alteration project types.
Structural alterations in Bristol start from £300. Most residential jobs are Building Control-ready within 24 to 72 hours.
We provide structural calculations for commercial structural alterations across Bristol including change-of-use alterations, mezzanine floor installations, removal of structural walls in retail and office premises, and strengthening of existing floor structures. We produce the full structural design pack needed for Bristol Building Control and your contractor.
See our dedicated RSJ design Bristol and wall removal Bristol pages for more detail.
A simple, transparent process to get your project moving and Building Control approved.
We start by understanding your project goals and requirements. This helps us provide a tailored solution that fits your needs. Learn more about how we handle consultations here.
We prepare detailed designs and structural calculations that comply with Building Regulations. Our team coordinates with architects to produce clear, practical designs.
Once designs are approved, we support execution and work with contractors to ensure the project runs safely and efficiently.
After completion, we conduct final checks where needed and provide aftercare support. You receive ongoing advice to keep your structure safe and compliant.
James Carter CEng MIStructE is your lead Chartered Structural Engineer for Bristol and the South West. With over 20 years of design experience in residential and commercial structures, James has worked on everything from period home alterations in Clifton to new-build steel and timber frame projects across Redland, Bedminster, and Portishead.
His approach is practical and safety-driven, delivering clear, buildable designs that satisfy both Building Control and your builder on site. James personally reviews every SECalcs project in the Bristol area.
When he is not designing, you will find him helping homeowners understand how to choose the right structural engineer for their project.
Recent feedback from homeowners and architects across Clifton, Bishopston, and Southville.
"Fast quote, clear beam calcs, and drawings our builder loved. Building Control approved first time."
Hannah L, Bishopston, RSJ for kitchen
"SECalcs worked with our architect, adjusted steel sizes for cost, and delivered a clean pack. Inspectors were happy."
Tom R, Clifton, Rear extension steels
"Loft conversion calcs delivered in two days. Clear notes for the builder and fast replies to our questions."
Sarah N, Southville, Loft steel and timbers
We provide structural engineering services across Bristol, Somerset and the wider South West region.
Common questions from Bristol homeowners, builders and developers.
Most residential structural engineering jobs in Bristol cost between £245 and £1,500. A single RSJ beam calculation starts from £245. Load bearing wall removal engineer fees are £300 to £600. A loft conversion structural design is £395 to £1,200. A home extension is £600 to £1,500. Structural alterations start from £300. Ground beam and shallow foundation designs start from £450. All fees are fixed in writing before we start. Read the full guide: structural engineer costs.
We provide structural calculations for structural alterations in Bristol including load bearing wall removals, new door and window openings, chimney breast removals, floor and roof modifications, and change-of-use alterations in commercial buildings. Victorian terraces in Clifton, Redland and Bedminster are our most frequent structural alteration projects. All calculations are Building Control-ready and start from £300.
Any work that changes the structure of your Bristol property. This includes wall removals, new door or window openings, loft conversions, extensions, chimney breast removals, and any work to existing beams or foundations. Bristol Building Control will not approve these works without a structural engineer's calculation pack.
We cover all of Bristol and the wider Bristol area including Clifton, Redland, Bishopston, Southville, Bedminster, Cotham, St Werburghs, Fishponds, Totterdown, Henleaze, Westbury-on-Trym, Horfield, Filton, Bradley Stoke, Keynsham, Portishead and Clevedon. We also cover the wider Somerset and South Gloucestershire area.
Yes. Good structural design prevents mistakes, saves money on site, and passes Bristol Building Control first time. The cost of correcting a poorly specified beam or incorrectly designed foundation is many times the cost of a proper calculation pack. See: why it matters.
Yes. We give free, fixed quotes once we see your drawings or photos. Most quotes are confirmed within a few hours. Request one: get a fixed-fee quote.
Look for Chartered status (MIStructE or MICE), strong local reviews, and a clear fixed-fee scope. Avoid engineers who cannot confirm their fee upfront. Helpful guide: choose the best engineer.
Cracks wider than 5mm, doors binding after movement, sloping floors, bowing walls, failing lintels, or subsidence. Bristol properties near the Avon can show signs of differential settlement due to alluvial soils. Victorian terraces in Clifton, Redland and Bedminster commonly have cracked or failing original timber lintels.
RSJ and wall removal designs: 24 to 72 hours. Structural alterations: 24 to 72 hours. Lofts and extensions: five to seven working days. Ground beam and foundation designs: three to five working days.
Yes. We supply Building Control-ready packs and reply to inspector queries from Bristol City Council and any private approved inspectors. More: submission help.
Yes. We size the beam, bearings, padstones and posts for any wall removal in Bristol. See: RSJ design and wall removal guide.
Professional Indemnity and Public Liability insurance. Always confirm this before instructing.
Signs include joists or beams bearing on it, stacked walls directly above, or thick internal masonry. In Bristol Victorian terraces, most original internal walls running front to back are load-bearing. Read: how to check safely.
Yes. All fees are fixed and confirmed in writing before any work begins. Post-submission support for Building Control queries is included. See our service page.
Yes. Every Bristol job is completed or reviewed by a Chartered Structural Engineer (MIStructE) with full Professional Indemnity and Public Liability insurance. Read about us: SECalcs.
Fill in the form and we will review your details and send a direct fixed price. We are engineers, not salespeople.
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.
