Why is the Build Joy - Design & Build Company best for Your Single Storey Extension
At Build Joy, we believe your home should evolve with your lifestyle — not just in size, but in usability, comfort and value. Our dedicated team brings together architects, engineers, planners and builders under one roof, guiding you smoothly through every stage of a single storey extension. Operating across London and the greater London area (within about 50 km), we’ve completed countless projects — delivering extra space for living, working or relaxing.
Build Joy clients are consistently happy with the quality of our work.
We’re known for our transparent and accurate quotations, detailed scopes of work, and clear expectations from day one. We don’t pressure clients with surprise variations or unexpected costs. What we quote is what we aim to deliver.
Timely delivery is our promise.
Almost 98% of our projects are completed on time, thanks to clear scheduling and reliable project management.
Communication is at the heart of Build Joy’s success.
Our team stays in touch daily — via WhatsApp, email, and calls — because we believe great construction happens with even greater communication.
As one client put it: “Build Joy is as accurate as they are disturbingly persistent — in the best way possible!”
When you pick Build Joy, you’re not just getting more floor space — you’re getting peace of mind.
Designing Your Single Storey Extension: Shape Your Space Intelligently
A single storey extension offers a remarkably flexible and cost‑effective way to enhance your home. Whether you’re looking to expand your kitchen, create a dining‑living zone, add a guest suite, or simply enlarge your lounge, Build Joy adapts the design to your lifestyle.
Our design approach includes:
- A full briefing to understand how you live, your aspirations and budget.
- Creative layouts that integrate seamlessly with your existing home while enhancing daylight, flow and connection to the garden.
- Material and finish options that complement your home’s style, and ensure the new space feels naturally part of the house.
- Consideration for future proofing — the extension we build today should still serve you well tomorrow.
With Build Joy, the design phase isn’t just about adding square metres — it’s about transforming your home for the better, with thoughtful, personalised design backed by real‑world experience.
Hiring Consultants & Planning: Let Build Joy Handle the Details
When extending your home, the planning and regulatory steps can feel daunting — but with Build Joy, you’re guided every step of the way. Here’s how we manage it:
- We work with chartered architects and planning specialists who know London boroughs and permitted development rules. For example, many single‑storey extensions fall under permitted development if size and design criteria are met.
- We prepare and submit site drawings, elevations, design statements and liaise with your local planning authority or building control team.
- Build Joy checks whether your extension can be delivered under permitted development or needs full planning permission. We ensure your submission is accurate, increasing your chance of a smooth approval.
- Our consultants also advise on party wall issues, neighbour notifications and boundary constraints — all the technicalities that can delay a build if overlooked.
With Build Joy, you’re backed by a team that turns planning complexity into clarity.
Project Management by Build Joy: Seamless Coordination & Timely Delivery
Once design and approval are complete, Build Joy shifts to full project management mode — meaning you don’t have to juggle multiple trades or coordinate logistics. Here’s what our service covers:
- A dedicated project manager who links you directly with Build Joy’s construction team and acts as your main point of contact.
- A build programme with clear milestones so you know exactly when foundations begin, when walls go up, when glazing is installed, and when internal works start.
- Regular progress updates and site visits, so you can track the build without the stress.
- Control of all trades: groundworks, structure, glazing, plumbing, electrics, heating, finishing. All working under Build Joy’s standards.
- Risk and contingency management — we plan for the unexpected, so you aren’t hit with surprises mid‑project.
In short, Build Joy handles the project like a production, so you can focus on what matters: how your home will feel when it’s done.
Construction Process: Build Joy, the construction company in London, Quality in Action
When the spade hits the ground, Build Joy delivers top‑tier workmanship in every step of your single storey extension:
- Site setup & demolition (if required): Safe, cleared and prepped for the build.
- Foundations & drainage: Engineered to suit your soil, load and design.
- Structure: External walls, roof, windows/doors installed with precision and to spec.
- Interior fit‑out: Insulation, heating, electrics, plumbing, floor finishes — we maintain rigorous quality.
- Final finishes & landscaping: From joinery to patios, Build Joy completes the transformation — delivering a space that’s ready to live in.
- Client handover: We walk you through your new space, demonstrate systems, and deliver relevant certifications.
With Build Joy’s construction process, you receive a space that’s built, finished and ready — not just another slab of bricks and mortar.
Final Certification & Compliance: Build Joy Takes Care of It
At Build Joy, the job isn’t complete when the last tile is laid — it’s done when everything is certified, compliant and your peace of mind is assured. Our certification steps include:
- Obtaining the Final Certificate from Building Control (or approved inspector) — confirming your extension meets all building regulations.
- Providing you with all relevant documentation: structural warrants, guarantees, compliance reports, warranties on glazing/heating.
- Checking all regulatory items: energy performance, insulation, fire safety, ventilation, drainage — so your new space meets or exceeds expectations.
- Advising on future maintenance and safe usage, helping you protect your investment.
Build Joy is committed to delivering not just a beautiful space — but one that’s legally sound and built to last.
Making Clients Happy: Our Promise at Build Joy
From start to finish, we measure our success by your satisfaction. At Build Joy we promise:
- A clear and fair quote, with no hidden surprises.
- A build schedule we adhere to, and transparent updates if things change.
- High‑quality finishes and attention to detail — because your home deserves the best.
- Respect for your family’s daily life: clean site management, safe practice and considerate working hours.
- Local experience: we operate across London and its surrounding 50 km radius, so we know the boroughs, building controls, and what works in our area.
We’re proud that our clients often refer friends to us, or invite us back for further work — because they know Build Joy delivers. When you choose Build Joy for your single storey extension, you’re choosing a partner who cares about your home as much as you do.
Ready to Start? Let Build Joy - Construction Company in LondonBring Your Extension to Life
If you’re ready to unlock more space, improve your lifestyle and enhance your home’s value, Build Joy is here to help. Contact us today for a free consultation. We’ll explore your vision, assess your property, provide an initial layout and quote, and outline the next steps from planning through to final handover.
With Build Joy, your new single storey extension is more than just an addition — it’s a transformation.
