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South West London Extension Specialists
Your Trusted Team for
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Extension Design Planning Approval Engineering Construction Final Handover |
Transform your home with a beautifully designed extension from Standley Design & Build. From the initial concept and planning stages through structural design and construction, our expert team manages every detail — ensuring a seamless, stress-free experience and a stunning new space that enhances both your lifestyle and the value of your property.
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TODAY!
standley design and build
Delivering Your Dream Home
As a husband and dad himself, our founder Jon Standley understands how family life really works. He knows an extension isn’t just about adding more room — it’s about designing a home that truly supports the way you live, making daily life simpler, more functional, and more enjoyable for everyone.
We plan each stage carefully to minimise disruption, so your family can carry on with daily life while we transform your home.
Initial Consultation
Wk 1
We start by understanding your family’s needs.
Extension Design
Wk 3
Our team turns your ideas into practical, beautiful plans.
Planning Approvals
Wk 10
We handle all permissions so you can focus on family.
Construction Phase
Wk 12
Work is managed with care to keep life running.
Final Handover
Wk 20
We won’t hand it over until it’s perfect.
Expand Your Home With a Stunning Extension Today!
Our Work
Recent Home Extensions
Explore some of our recent home extensions, where we’ve transformed properties with beautifully designed spaces that elevate everyday living — from open-plan kitchens and family rooms to elegant bedrooms, home offices, and inviting guest suites.
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What Our Customers Have To Say
Our customers are truly at the heart of everything we do, and their experiences reflect the care, dedication, and attention to detail that go into every loft conversion we deliver.
I am glad I have chosen Jon for my home renovation projects. He was fantastic listening to what we wanted for the transformation and provided a lot of examples for reference. He was very efficient laying out the plans, providing competitive quotes and mostly importantly responsive whenever I reached out.
Ben Chan
We had an amazing experience converting our loft with Standley Design and Build, from the initial quote to completing the job. Jon was very clear about what the quote included and very well organised. Throughout the job, communication was fantastic and any small issues sorted quickly and fairly.
Richard Edwards
Renovation Projects
Dedicated to Minimising Disruption & Reducing Stress
We understand that moving can be one of life’s most stressful experiences — from endless packing and rising costs to leaving behind a home full of memories. That’s why we believe the better choice is transforming the space you already love. A loft conversion gives you the extra room your family needs without the hassle of relocating, turning your current house into your forever home.
Our Mission
The Core Values That Guide Every Loft We Create
At Standley Design & Build, our work is shaped by a commitment to quality, honesty, and care — values that guide every decision we make and every space we create. We believe your home deserves the same attention and respect we’d give our own.
Clear Communication
The problem: Most builders leave you chasing updates and wondering what’s happening.
Clear Communication
Our approach: We keep you informed every step of the way with clear, regular communication.
Transparent Pricing
The problem: Unexpected charges often appear mid-project, stretching your budget.
Transparent Pricing
Our approach: We provide transparent pricing upfront, so you know exactly what to expect.
On-Time Delivery
The problem: Projects frequently run over schedule, disrupting family life for weeks.
On-Time Delivery
Our approach: We plan meticulously and deliver on time, keeping your routine intact.
Thoughtful Design
The problem: Many builders focus on construction but neglect thoughtful design.
Thoughtful Design
Our approach: We combine design expertise with build quality for spaces that truly work.
Stress-Free Process
The problem: Home projects often feel overwhelming, messy, and exhausting.
Stress-Free Process
Our approach: We manage everything from start to finish, so you can relax.
Quality Craftsmanship
The problem: Rushed work and poor finishes leave you disappointed and tired.
Quality Craftsmanship
Our approach: We treat your home like our own, with quality in every detail.
Seamless Experience
The problem: Juggling planners, engineers, and builders can feel confusing and chaotic.
Seamless Experience
Our approach: We handle every stage in-house, simplifying the entire journey.
Future-Proof Spaces
The problem: Many projects focus only on quick fixes, not long-term value.
Future-Proof Spaces
Our approach: We create future-ready spaces that grow with your family’s needs.
How long does an extension take?
Most home extensions take around 10 to 16 weeks, depending on size and complexity. At Standley Design & Build, we plan each stage with care to keep your project on schedule and minimise disruption to daily life.
Do I need planning permission first?
Many home extensions fall under permitted development rights, so planning permission isn’t always required. If yours does, we’ll guide you through every step — from preparing drawings and submitting applications to securing approvals — making the whole process simple and stress-free.
Can I stay home during works?
Yes — most families remain at home during an extension project. Our team works carefully to minimise disruption, reduce mess, and keep your daily routine running smoothly from start to finish.
How much does an extension cost?
Costs vary depending on the size, design, and complexity of the project, but most home extensions range from £60,000 to £120,000. We provide clear, upfront pricing with no hidden surprises and work closely with you to make the most of your budget.