Home extensions in Highgate are one of the best ways to add space and value to your property. Whether you’re planning a full rear extension or a stylish loft conversion, our team at Structural Engineer Calcs provides accurate, Building Control–approved structural calculations designed around your home. From removing load-bearing walls to planning complete steel beam layouts, we make sure your project is safe, fully compliant, and ready for approval. We work with homeowners across Highgate and Greater London, helping them build with confidence and peace of mind.
Highgate, North London (N6)
Home Extension Highgate & Loft
Steel Frame & Foundation Design
Building Regulations Approved
Home extension Highgate projects often involve adapting period properties for modern living. This project required a steel moment frame for the ground floor and structural strengthening of the roof, ensuring the new spaces were safe, stable, and fully compliant with Building Control.
Many properties in Highgate are historic. We design structural solutions that respect the existing fabric of the building, ensuring your home extension Highgate integrates safely with the original masonry and timber.
We use steel sway frames to support large spans of glazing. This allows you to flood the property with natural light and create open-plan living spaces without needing thick, obstructive shear walls.
Extending is often more cost-effective than moving in N6. By converting the loft or extending to the rear, you add significant usable floor area. We calculate efficient load paths to keep steel weights and costs down.
A correct structural design ensures your build meets Part A of the Building Regulations. We provide all the necessary calculations to satisfy the inspector and ensure your home is safe and insurable.
Undertaking a home extension Highgate build or a loft conversion? Here is how we engineer your project from the initial plan review through to the final Building Control certificate.
Email us your architect's drawings or estate agent floor plans. We will review the load-bearing walls and spans specific to your Highgate property.
We provide a clear, fixed-fee quote within 24 hours, detailing exactly which steel beam calculations, foundation designs, and roof checks are required.
We produce the full structural pack for your home extension. This includes connection details, padstone sizes, and the calculation report for the inspector.
We answer any structural queries from Building Control or your builder during construction, ensuring the steelwork is installed correctly and approved.
“We couldn’t be happier with the service from Structural Engineer Calcs. They looked after our home extension and loft conversion Highgate project with complete professionalism. The calculations were clear, accurate, and approved by Building Control without any issues. Everything ran smoothly from start to finish and the whole experience was quick, efficient, and stress free.”
Comprehensive structural packages for smooth construction and Building Control approval across Highgate — ideal for your next home extension Highgate project in Greater London.
Clear and practical layouts designed to make your loft conversion Highgate safe, efficient, and simple to construct — fully ready for Building Control sign off.
Accurate load-bearing wall checks that let you create open, modern living spaces in your Highgate home while keeping full structural safety and compliance.
Precise beam design for large openings and bi-fold doors — ideal for rear extensions with wide glazing and bright family spaces in Highgate properties.
Full Building Control-ready calculations and drawings for fast approval across Highgate and the wider Greater London area.
On-site inspections, crack assessments, and pre-extension advice to help you plan safely and confidently for your next project in Highgate.
Most home extension Highgate projects fall between £250–£550 depending on span lengths, number of beams, and the overall complexity of the design. Each project is quoted individually with a clear, fixed fee and no hidden extras.
Yes. Building Control will request structural calculations to confirm that your design is safe and compliant. We prepare clear calculation packs and drawings for home extension Highgate and loft conversion Highgate projects.
Most small to medium projects are completed quickly once we receive your drawings and brief. If you’re working to a deadline, let us know and we’ll prioritise your project where possible.
Yes. We can work from architect drawings, planning sets, or measured surveys. If you don’t have full plans yet, clear sketches and photos are usually enough for us to quote and advise.
We’ll need your address, drawings or sketches, a short outline of the work (extension, loft, or wall removal), and any key spans or opening widths. Photos of the existing structure are also very helpful.
Yes. All of our calculation packs follow current UK Building Regulations and are presented in a professional, easy-to-review format that Building Control officers recognise and approve.
We cover Highgate and nearby areas across Greater London, including Hampstead, Muswell Hill, Crouch End, and Finchley. If you’re close by, get in touch and we’ll confirm availability.
Yes. We design steel beams for knock-throughs, rear extensions, and large glazed openings. This includes beam sizing, padstones, bearings, posts, and connection details for your builder.
Yes. We design ridge beams, purlins, trimmers, and dormer framing, and we check the loft floor structure for proper load paths. We also assess headroom and stair placement to make sure the loft feels spacious and practical.
Not always. Many domestic projects can be completed using drawings, photos, and a short call. If we feel a site visit in Highgate or nearby would be useful, we’ll suggest it.
We provide a fixed fee once we’ve reviewed your drawings and brief. There are no hidden extras — if anything changes, we’ll confirm before carrying out additional work.
Share the documents with your builder and Building Control. If any questions come up, we’ll reply quickly and provide any clarifications needed to keep your approval process moving.
Click Get Your Free Structural Quote, upload your drawings, and tell us about your project. We’ll review and respond with a fixed fee and clear next steps.
