Home extensions in Clapham are one of the best ways to create more space and add real value to your property. Whether you’re planning a rear kitchen extension or a loft conversion, our team at Structural Engineer Calcs delivers precise, Building Control-approved structural calculations tailored to your home. From removing load-bearing walls to designing full steel beam layouts, we make sure every detail is safe, compliant, and ready for approval, helping Clapham homeowners turn traditional houses into modern, open-plan family spaces.
Clapham, South West London
Home Extension and Loft Conversion
Full Detailed Structural Calculations
Building Control Approved
A carefully planned upgrade that combines a rear home extension with a loft conversion in Clapham. More usable space, better daylight, and a structure prepared for smooth Building Control approval.
Every property in Clapham is unique. We design each structure to suit your home’s layout and period style, so your home extension Clapham project or loft conversion Clapham feels safe, efficient, and naturally part of the original house.
Thoughtful structural planning for wide open spans, roof lights, and full-height glazing fills the home with natural light and creates a smooth flow from kitchen to garden. You get modern, energy-aware living that feels open and connected.
Need more space but love living in Clapham? A well-planned rear extension or a converted loft gives you the space for a family kitchen, a quiet home office, or an extra bedroom — all without the stress or expense of moving house.
A strong, Building Control-ready design increases comfort and long-term value. A quality extension or loft conversion makes your home stand out in the Clapham property market and adds lasting appeal.
Planning a home extension Clapham project or a loft conversion Clapham? Here’s how we take your project from first enquiry through to full Building Control approval.
Send us your architectural drawings, sketches, or even photos. We’ll review them quickly and provide initial guidance for your Clapham project.
Within 24 hours, we’ll confirm a fixed fee, clear scope of work, and any extra details needed to move forward with your project.
We prepare all required structural calculations and drawings tailored to your home extension or loft conversion in Clapham — ready for Building Control submission.
We handle Building Control comments, offer reasonable revisions, and support your builder through to final sign-off, keeping the process smooth from start to finish.
“We’re really pleased with the service from Structural Engineer Calcs. They managed our home extension and loft conversion Clapham project with complete professionalism. The calculations were spot on, the drawings clear, and Building Control approved everything straight away. The process was smooth, quick, and stress-free – truly a five-star experience.”
Comprehensive structural packages for smooth construction and Building Control approval across Clapham — ideal for your next home extension Clapham project.
Clear, practical layouts designed to make your loft conversion Clapham safe, efficient, and straightforward to build — fully ready for Building Control sign off.
Accurate load-bearing wall checks that help you create open, modern living spaces in your Clapham home while keeping full structural stability.
Precise beam design for large openings and bi-fold doors — ideal for rear extensions with wide glazing and bright family spaces.
Full Building Control-ready calculations and drawings for quick approval across Clapham and wider South West London.
On-site inspections, crack assessments, and pre-extension advice to help you plan safely and confidently for your next project in Clapham.
Most home extension Clapham projects range between £250–£550 depending on the span lengths and overall complexity. Every project is quoted individually with a clear, fixed fee.
Yes. Building Control will ask for structural calculations to confirm the design is safe and compliant. We prepare calculation packs and drawings for home extension Clapham and loft conversion Clapham projects.
Most small to medium projects are turned around quickly once we have your drawings and brief. If you’re on a tight deadline, tell us and we’ll prioritise where possible.
Yes. We can work from planning drawings or measured surveys. If you don’t have full plans yet, clear sketches and photos are fine for a quote and early advice.
Your address, drawings or sketches, a short description of what you’re planning (extension, loft, or wall removal), your preferred spans or opening widths, and any site details. Photos of the existing structure help a lot.
Yes. Our packages follow UK Building Regulations and are presented in a clear format that Building Control can easily review and approve.
We cover Clapham, Battersea, Balham, Brixton, Wandsworth, and the wider South West London area. If you’re nearby, get in touch and we’ll confirm availability.
Yes. We design steels for knock-throughs, rear extensions, and large glazed openings. That includes beam sizing, bearings, padstones, posts, and connection details for your builder.
We size ridge beams, purlins, trimmers, and dormer framing, and we check the floor build-up. We also review stair openings and headroom to make sure the loft is genuinely usable, not just technically converted.
Not always. Many domestic projects are completed from drawings, photos, and a short call. If a visit in Clapham or nearby will add value, we’ll recommend it.
We provide a fixed fee once we’ve reviewed your drawings and brief. No hidden extras — if the scope changes, we’ll confirm any updates before carrying out extra work.
Share them with your builder and Building Control. If any queries arise, we’ll respond quickly and provide any clarifications needed so your approval process stays smooth.
Click Get Your Free Structural Quote, upload your drawings, and tell us what you’re planning. We’ll review and reply with a fixed fee and clear next steps.
