Residential projects • Structural engineering services
We provide fixed fee structural engineering services for residential projects, from home extensions and load bearing wall removals to loft conversions, basements and portal frames. Every pack is ready for Building Control and clear enough for your builder to follow.
Most clients come to us for practical help with steel beams, RSJ design, footings, retaining walls and timber floors rather than theory. This services page is your quick map of what we do and where we work.
Wall removal, loft and extension on one house
These are the services most UK homeowners contact us about. Each link takes you to a dedicated page with more detail, examples and pricing.
Alongside domestic work we design steel frames, portal frames, mezzanines and reinforced concrete elements for small commercial and industrial projects.
The process is the same whether you need one RSJ or a full set of drawings for an extension, loft conversion or small commercial project.
You email architect plans, sketches or even measured photos along with the property address. We confirm what needs designing.
We send a clear fixed fee and typical turnaround. Most domestic jobs complete within 24 to 72 hours once we have everything.
We design beams, walls, slabs and foundations, then issue drawings, markups and calculation sheets in PDF.
If the Building Control officer or warranty provider has queries, we clarify the design and issue revisions where agreed.
Your calculations are produced in house by experienced UK structural engineers with chartered backgrounds and day to day experience in extensions, lofts and wall removals.
Practice led by chartered structural engineers with CEng MIStructE and MICE backgrounds. Design work checked against the Eurocodes and UK National Annexes.
Hundreds of home extensions, loft conversions and wall removals designed across the UK every year. Practical decisions on beam sizes and bearings.
Internal checking steps before anything is issued. Standard details and notes refined over dozens of projects so Building Control know what to expect.
A few examples of how our structural engineering services are used in real homes. Each project had full calculations and drawings ready for Building Control.
This short tutorial from our YouTube channel shows the thinking behind a typical steel beam design, including bending, shear and deflection checks.
Shows the steps we take when checking a typical RSJ for a home extension or wall removal, including load paths, bending moment, shear and deflection limits.
These quick notes cover the questions we hear most often when clients are planning home extensions, loft conversions or wall removals.
We agree the drawings, elements and number of beams before we start. You know exactly what is included and what any extras would cost.
Calculations are issued with sketches and markups that officers see every day. We respond to their questions as part of the service.
Builders get clear beam sizes, bearings and notes. If they are unsure on site they can contact us for clarification during the build.
Recent comments from clients who used our structural engineering services across the UK.
"SECalcs explained everything in plain English and turned our extension around quickly. Building Control asked one question which they handled the same day."
Amelia Wright
"Professional from start to finish. Clear drawings, accurate calcs and a fair fixed fee. Our builder commented on how tidy the pack was."
Daniel Foster
"Needed steel design for a through-lounge wall removal. They checked the foundations, sized the RSJ and provided padstone details. Building Control approval came back without any fuss."
Priya Shah
We work nationwide from our central office. These are some of our key cities and home extension hotspots.
Short, plain English answers to the questions we hear most often from UK homeowners, small developers and builders.
Most simple load bearing wall removals with one RSJ and clear photos fall in the low hundreds, not thousands. The exact fee depends on spans, loads and how many beams or openings are involved. Send your drawings or photos through the form and we will confirm a fixed fee before you commit.
Most of our work is for houses and small residential schemes, but we also design portal frames, mezzanines, industrial floors and retaining walls for light commercial projects. If your job is beyond our normal scope we will say so at the start rather than stretch beyond our experience.
In many cases yes. Clear drawings, photos and basic measurements usually give enough information for structural engineering services such as RSJ design, extensions and loft conversions. If a visit is needed we explain why and include it as part of the quote.
Simple steel beams or wall removals are often turned round in 24 to 48 hours once we have all the details. Extensions, loft conversions and more involved schemes usually take three to seven working days. We confirm timescales before you approve the quote.
We design to the Eurocodes with the UK National Annexes, which is what Building Control expect to see on most new work. Using the correct partial factors, load combinations and serviceability limits means the structure is checked in a way that matches current UK standards and inspector expectations.
Our packs are prepared to current standards, with clear drawings and calculation sheets. Building Control officers across the UK already use our work. If they have questions on a particular job we respond and adjust where needed as part of the service, not a surprise extra.
Yes. If you are not sure whether you need an RSJ design, full extension pack or something more specialist, send your drawings and a short note through the form below. We will confirm which structural engineering services fit your project and give a clear fixed fee.
Use this form to outline your project. Your enquiry goes straight to an engineer, not a call centre.
If you are planning a home extension, loft conversion, wall removal, basement or small commercial scheme and need structural calculations that Building Control can accept without delay, send us a short outline today.
