A rear extension is a popular and effective way to increase living space while enhancing the connection between your home and garden. At G&J Construction Services Ltd, we design and construct bespoke rear extensions that transform the way homeowners live, creating bright, spacious, and versatile interiors tailored to modern family life.
Whether you’re looking to expand your kitchen, create an open-plan kitchen and dining area, add a family room, or improve the overall layout of your home, our experienced team delivers carefully planned solutions that maximise both space and natural light. We work closely with clients to ensure each extension complements the character of the existing property while meeting their practical and aesthetic requirements.
From architectural design and planning applications through to structural works, construction, and final finishes, we provide a complete design and build service, managing every stage of the project with professionalism and attention to detail. Large glazed openings, rooflights, and contemporary design features can be incorporated to create seamless transitions between indoor and outdoor living spaces.
Our skilled construction team is committed to delivering the highest standards of workmanship, using quality materials and proven building methods to ensure a durable and beautifully finished result. Through effective project management and clear communication, we ensure a smooth construction process with minimal disruption to your home.
Whether extending a period property or a contemporary residence, G&J Construction Services Ltd creates rear extensions that add valuable living space, improve functionality, and significantly enhance the value of your property.
Based in North London, G&J Construction Services Ltd works with homeowners Cockfosters, Barnet, Hadley Wood, Southgate, Finchley, Muswell Hill, Highgate, Enfield, Totteridge, Winchmore Hill, Mill Hill, and the surrounding areas. We are committed to creating beautiful, functional homes that enhance everyday living while adding lasting value to our clients’ properties.
Project Stages
Every project begins with a detailed consultation to understand your vision, requirements, and budget. We carry out a site assessment and provide initial advice on feasibility, design opportunities, planning considerations, and indicative construction costs.
A comprehensive measured survey of the property is undertaken to accurately record existing conditions. Using this information, we prepare detailed existing floor plans, elevations, and site drawings that form the foundation of the design process.
We develop tailored design proposals that maximise the potential of your property while reflecting your lifestyle and aspirations. Concept drawings are accompanied by an initial construction estimate to help align the design with your budget and project objectives.
Following approval of the preferred concept, we prepare detailed architectural drawings and supporting documentation for submission to the local planning authority. We manage the planning application process and liaise with planners to help achieve a successful outcome.
Once planning approval is secured, we produce detailed technical drawings for construction. This stage includes Building Regulations drawings, structural engineer calculations, party wall matters where required, and coordination with Building Control to ensure full compliance with current regulations.
Before construction commences, we provide a detailed quotation, scope of works, and project programme outlining key milestones and anticipated completion dates. This ensures complete transparency and allows the project to progress smoothly from design into construction.
Our experienced construction team manages every aspect of the build, maintaining the highest standards of workmanship, communication, and site management. Regular progress updates ensure clients remain informed throughout the construction phase until final completion and handover.




