Home Extensions in Surrey & London
SEM Group Ltd specialises in high-quality home extensions across Surrey and London. Whether you're planning a single-storey, double-storey or wraparound extension, we provide a complete design-and-build service. From architectural drawings and structural calculations to Party Wall Agreements and construction, our experienced team manages every stage of your project from concept to completion.
Why Choose SEM Group Ltd?
At SEM Group Ltd, we provide more than just construction. Our complete design-and-build service manages every stage of your home extension, from the initial consultation through architectural drawings, structural calculations, planning support and Party Wall matters, right through to construction and final completion. With one experienced team managing your project, we deliver a smoother, more efficient and stress-free experience.
✓ Complete Design & Build Service
From your first idea to the finished extension, we manage the entire project under one roof.
✓ Architectural Drawings & Structural Calculations
We arrange the professional drawings and structural engineering required to bring your project to life.
✓ Planning, Building Regulations & Party Wall Support
We guide you through planning applications, Building Regulations and Party Wall matters where required, helping to keep your project on track.
✓ One Team from Design to Completion
With SEM Group Ltd, you won't need to coordinate multiple companies. We provide a seamless service from concept through to construction and handover.
Our Home Extension Process
From your first consultation to final completion, we manage every stage of your home extension with one experienced team, making the process simple, efficient and stress-free.
1
Free Consultation
We visit your property to discuss your ideas, requirements and budget, providing honest professional advice tailored to your project.
Structural Calculations
4
We arrange all required structural calculations to ensure your extension is safe, compliant and built to last.
2
Design & Budget
Planning
We develop the best solution for your home, discussing layouts, construction methods and realistic budgets before moving forward.
5
Planning & Party Wall Matters
Where required, we assist with planning applications and Party Wall matters to help your project progress smoothly.
3
Architectural Drawings
Our architectural drawings transform your ideas into detailed plans ready for planning and construction.
6
Construction & Completion
Our experienced construction team delivers your extension to the highest standards before completing a thorough final handover.