JJ-Build Ltd

Welcome to JJ-Build Ltd, your trusted specialists for House Extensions in North West London. We help homeowners create more space, improve layouts, and enhance everyday living through well-planned, carefully constructed extensions. With a strong emphasis on craftsmanship, organisation, and modern building standards, our team delivers results that feel natural, functional, and perfectly suited to each property. Every project begins with understanding how you use your home and what improvements will make the biggest difference. Whether you’re extending outwards, building upwards, or opening your kitchen into a brighter open-plan layout, we design and construct spaces that improve comfort and add long-term value. Our experience in House Extensions North West London ensures each build is tailored to the architecture of your property, blending seamlessly with existing features while meeting current regulations. We work closely with homeowners, architects, and designers to ensure every stage is planned properly—from the first assessment to the final finishing touches. Our approach prioritises structural integrity, energy efficiency, and clean working practices, helping you enjoy a smooth and well-managed building journey. Clear communication is at the heart of our service, so you always know what to expect, when to expect it, and how the project is progressing. JJ-Build Ltd has earned a strong reputation across North West London for reliable workmanship, transparent guidance, and homes that feel refreshed, more spacious, and more enjoyable to live in. If you are planning a kitchen extension, a loft conversion, or a full home transformation, our team is here to turn your ideas into a durable, beautifully built reality.