Get your fast, no-obligation quote today from our expert team—simple, quick, and completely free.
Create more room to live and grow with smart, beautifully built house extensions tailored to your lifestyle and property.
Get a Free Quote
Get your fast, no-obligation quote today from our expert team—simple, quick, and completely free.
Custom House Extensions in London are one of the most cost-effective ways to upgrade your property without the stress of moving. Whether you want a larger kitchen, a new bedroom or a quiet home office, Daniels Contractors & Development designs and builds extensions that blend with your existing layout and suit your everyday needs.
Done well, an extension adds living space, improves natural light and brings real long-term value to your home. Our team of building professionals has over 23 years' experience, and we manage the whole project from first sketch to final handover.
Extending your home is a major decision, and we treat it that way. We guide you through the whole journey, from your first consultation and planning permission to handover. You deal with one experienced team, so there are no gaps in communication and no surprises.
Every home is different, so we never use templates. Our custom house extensions in London are shaped around your property, lifestyle and budget. We keep disruption low, tidy the site each day and work to a high standard of craftsmanship.
We design and build a wide range of extensions across London and Surrey, including:
Open up your kitchen and dining space to the garden with a carefully designed rear extension.
Use narrow, wasted space that is common in Victorian and Edwardian terraces to create valuable additional floor space.
Combine rear and side space for a dramatic transformation and a more flexible layout.
Add valuable accommodation across two floors, including bedrooms, bathrooms or family rooms.
Create larger kitchens with new layouts, utility rooms and improved access to the garden.
Create a dedicated and comfortable workspace that gives you the privacy and separation needed to work productively from home.
Whatever the size or style, each extension is designed to feel like a natural part of your home, not an add-on. See our house extensions page for more.
A clear process keeps your project on time and on budget:
We visit your home, listen to your ideas and discuss what is possible.
We prepare tailored drawings and coordinate planning permission, structural engineering and Building Control on your behalf.
You receive a transparent quote and a realistic timeline, with no hidden costs.
Our skilled team builds to high standards and keeps you informed at every stage.
We complete detailed quality checks and Building Control sign-off, then hand over a finished space you will love.
A typical home extension takes around 10 to 16 weeks, including planning, groundwork, structural build and finishing.
Planning rules can feel complicated, especially in conservation areas or on period homes. Some extensions fall under permitted development rights, while others need full planning approval.
We assess your property, advise on the best route and coordinate the paperwork, so you can focus on imagining your new space.
Great extensions combine smart design with excellent workmanship. We match materials, rooflines and details to your existing property, or introduce contemporary contrasts if that is the look you prefer.
Large glazed doors, skylights and open-plan layouts can flood your home with natural light, while quality insulation and modern building methods keep it comfortable all year round.
Our custom house extensions in London are built to perform well, look beautiful and last.
If you cannot build outwards, going down can be the smartest option. We also carry out basement conversions, from refurbishing existing cellars to digging down beneath period properties to gain ceiling height.
Basements demand careful engineering, so we take waterproofing, structure and finish equally seriously. The result can be a cinema room, guest suite, gym or playroom instead of a dark storage space.
Learn more on our basement conversion page .
An extension should improve your life without causing financial stress. We help you balance your wishes with your budget and suggest practical ways to get the most from every pound.
As a guide, a 30 square metre rear extension in London typically costs £80,000 to £150,000 in 2026, including construction, high-end internal fit-out, professional fees and VAT.
Compared with the cost and disruption of buying and moving, extending is often the smarter way to gain the space your family needs.
"The outcome is of an extremely high standard and even better than we imagined. We couldn't be happier."
Kit and Jo, kitchen extension client
We build extensions throughout London and Surrey, from Islington, Hackney and Ealing to Wimbledon, Richmond, Esher and Guildford. If your area is not listed, get in touch and we will confirm whether we can help.
You can have confidence in the standards behind our work. We are a TrustMark registered, Federation of Master Builders member, NHBC registered and fully insured business, with over 200 completed projects and 280 satisfied clients. Many of our clients come to us on recommendation from architects, friends and family.
A house extension is a cost-effective way to upgrade your home without the stress of moving. Whether you’re adding a new bedroom, kitchen, or home office, we design and build seamless extensions that blend with your existing layout and meet your everyday needs.
We’ve delivered countless basement conversions across London, ranging from stylish refurbishments to full excavations under period properties. We ensure waterproofing, structure, and finish are completed to the highest standards, with full attention to light, layout and livability.
We understand that extending your home is a major decision. That’s why we guide you through the entire process—from initial consultation and planning permission, right through to final handover. We deliver space-enhancing solutions that fit your property and your budget.
Every home and family is different, which is why we tailor each extension to your specific needs. Our experienced team ensures minimal disruption, outstanding craftsmanship, and a smooth, stress-free experience from start to finish.
From renovations to new builds, we offer tailored solutions to meet your needs with expert craftsmanship and attention to detail.
Maximise unused attic space with stylish loft conversions. We create practical, light-filled rooms that blend seamlessly with your home’s structure and design.
From small updates to full renovations, our refurbishment services revitalise your home with expert finishes, quality materials, and a keen eye for detail.
Expand your living space beautifully. Our house extensions are built with precision, offering smart layouts & seamless integration.
TESTIMONIALS
Our clients trust us for professional air conditioning services. See what businesses and homeowners say about our expert installations and top-notch customer service.
We are very pleased with the work done by Daniels Contractors! They did some renovations in our house, Ruslan and his team were welcomed and so helpful. We are extremely happy with the result, as we thought it would take more time, but the guys did everything quickly and even helped improve aspects that we did not notice at first.
Daniels did an absolutely terrific job on our rear extension, we couldn’t be happier! They were professional and responsive, and kept us in the loop at every stage. Excellent communication and results, we are thrilled with the completed product!
Daniel’s Contractors was the main contractor to convert a single storey garage type of dwelling to a three-storey residential house. The job was done to a high standard within the timeframe agreed at the start. Michelle and Russ were polite and professional. I could rely on them to work with different professionals involved on the development and they always found solutions to solve problems. Michelle has a very good taste on choosing tiles, timber floor and kitchen units. I will definitely work with them again.
We’re always ready to help you take the first step toward your perfect property solution. Let’s start the conversation.
Friendly Support
At Daniel’s Construction, we offer friendly and approachable customer support, always ready to answer your questions and assist with any needs you may have.
Insured Service
We provide fully insured services, ensuring complete peace of mind with every construction, extension, or renovation project we deliver to our valued clients.
Get Free Quote
Contact Daniel’s Construction today for a free, no-obligation quote, and let us help you plan the perfect construction solution tailored to your needs.
FAQ
We’ve gathered the most common queries to help you get the clarity you need on your next project.
The timeline for a home extension can vary based on the scale and complexity of the project. On average, most extensions take between 10 to 16 weeks, including planning, groundwork, structural build, and finishing. We always provide realistic schedules upfront.
Many loft conversions fall under permitted development, meaning planning permission may not be needed. However, certain designs, locations, or building types may require approval. We’ll guide you through the process and handle all necessary permissions and documentation on your behalf.
Daniel’s Construction proudly serves residential and commercial clients across London and the surrounding counties. If you’re outside the main service area, feel free to get in touch — we’re often able to accommodate requests depending on the nature of the job.
Yes, all our work is fully insured and carried out by qualified professionals. We hold relevant certifications and follow UK building regulations strictly, ensuring complete peace of mind for every client from start to finish, regardless of project size or complexity.
We perform a thorough site assessment before starting, but if unforeseen issues arise, we’ll keep you informed immediately. Our team will offer transparent options and adapt as needed, ensuring the project remains on track without compromising quality or budget.
It depends on the scale of the project. For lighter refurbishments or painting, it’s often fine. However, for major structural work, we may advise temporary relocation to ensure safety, minimise disruption, and allow our team to work efficiently throughout.
Absolutely. We provide clear, detailed quotes with a full cost breakdown and a proposed timeline. We believe in full transparency, so you’ll know exactly what to expect before any work begins—no hidden charges or vague deadlines, just straightforward service.
We source only high-quality, UK-compliant materials from trusted local suppliers. Our team ensures every product used in your project meets our standards for durability, performance, and aesthetics, guaranteeing a finish that looks great and stands the test of time.
The timeline for a home extension can vary based on the scale and complexity of the project. On average, most extensions take between 10 to 16 weeks, including planning, groundwork, structural build, and finishing. We always provide realistic schedules upfront.
Many loft conversions fall under permitted development, meaning planning permission may not be needed. However, certain designs, locations, or building types may require approval. We’ll guide you through the process and handle all necessary permissions and documentation on your behalf.
Daniel’s Construction proudly serves residential and commercial clients across London and the surrounding counties. If you’re outside the main service area, feel free to get in touch — we’re often able to accommodate requests depending on the nature of the job.
Yes, all our work is fully insured and carried out by qualified professionals. We hold relevant certifications and follow UK building regulations strictly, ensuring complete peace of mind for every client from start to finish, regardless of project size or complexity.
We perform a thorough site assessment before starting, but if unforeseen issues arise, we’ll keep you informed immediately. Our team will offer transparent options and adapt as needed, ensuring the project remains on track without compromising quality or budget.
It depends on the scale of the project. For lighter refurbishments or painting, it’s often fine. However, for major structural work, we may advise temporary relocation to ensure safety, minimise disruption, and allow our team to work efficiently throughout.
Absolutely. We provide clear, detailed quotes with a full cost breakdown and a proposed timeline. We believe in full transparency, so you’ll know exactly what to expect before any work begins—no hidden charges or vague deadlines, just straightforward service.
We source only high-quality, UK-compliant materials from trusted local suppliers. Our team ensures every product used in your project meets our standards for durability, performance, and aesthetics, guaranteeing a finish that looks great and stands the test of time.