PAYTE
Extension Architect Wimbledon
Principal Designer & Higher Risk Building Expert
Our Wimbledon architects have extensive experience in extension architecture, specialising in loft conversions, basement extensions, bespoke extensions, rear extensions, two-storey and single-storey extensions, contemporary designs, double-storey extensions, Mansard roof extensions, and ground-floor extensions.
house extension architect Wimbledon
Our firm specialises in house architecture in Wimbledon, most commonly Victorian houses. We take pride in helping our clients enhance their property value while optimising space. We create bespoke designs and contemporary design extensions with interior reconfigurations to maximize natural light and extra space. Our creative design team elevates the planning process to a new level.
As a leading architectural practice, we specialize in helping homeowners navigate the planning process, building regulations, planning permissions, party walls, and building control. Our experienced team handles all regulatory challenges in extension projects, making your home’s transformation seamless and stress-free.
We carry out architectural work for rear, wraparound, side return, or infill extensions to best suit your space and increase its value. We begin with our design process, initial drawings, structural calculations, and 3D visualisations to assist clients in visualising the transformation, alongside a precise scope of work for the building contractor. Let us help expand your floor space and elevate your property’s worth. Our expertise ensures that each project is expertly designed to meet your specific needs.
Being a quality South London extension architect practice, we deliver bespoke residential design solutions tailored to the character, planning context, and long-term value of each home.
apartment Extension architects
We specialise in providing comprehensive design and architectural services for apartment extensions in Wimbledon. Our offerings include detailed planning advice, design layout changes, custom joinery, and regulatory drawing preparations. Whether you are looking to completely revamp your apartment’s layout or to implement specific modifications, we manage every aspect of the project.
Our services encompass the entire process, from securing planning permission and building approvals to obtaining landlord consents and the necessary license to alter documentation. We also handle all planning applications ourselves.
Additionally, we offer project management as part of our complete service package. Our architectural service ensures a seamless transformation of your space, enhancing both functionality and aesthetics to create modern, stylish living environments.
We have a team of extension architects London property owners can trust for considered design, planning, and project coordination for apartment extensions throughout the city.
extension conversion package
3 Meter rear extensions package
£60,000.00 INC. VAT
What’s included:
6 Meter rear extensions package
£104,700.00 INC. VAT
What’s included:
At Payte Architects London, our rear extension service is about making it simple to gain more space without losing control of cost or complexity. With over 10 years’ experience on Wimbledon homes, we offer two fixed‑price packages at three and six metres (including VAT), so you choose how far to extend and we handle design, approvals and on‑site work up to first fix.
You’ll work with a friendly architectural team that actually picks up the phone. All architectural work is carried out by architects registered with the Architects Registration Board (ARB) or chartered with the Royal Institute of British Architects (RIBA), and we coordinate closely with our dedicated extension build team so design and construction stay joined‑up from day one.
We take care of the planning route – from Lawful Development Certificates for three‑metre projects to prior‑approval applications for six‑metre schemes – using our experience with boroughs such as Haringey Council’s planning team, Lambeth Council’s planning service and Brent Council planning to shape proposals around what local councils typically support.
Throughout, we keep communication simple and regular so you always know where your project is and what’s coming next, aiming for a bright, well‑built Wimbledon extension that quickly becomes the main room everyone uses.
Exclusions
This package is not applicable to property where you need planning permission or listed building consent, or if there is an article 4 on your property.
In addition to the above, the following exclusion applies:
- Party wall award
- Building control fees
- Any specialist consultants
- Asbestos removal fees
- Finishing (sanitary ware, tiling, floor finishing, wall finishing, joinery).
- Party wall award
- Building control fees
- Any specialist consultants
- Asbestos removal fees
- Finishing (sanitary ware, tiling, floor finishing, wall finishing, joinery).
ARRANGE A FREE CONSULTATION
Arrange a free consultation with our architects practice today, we offer clients a 30 minute consultation.
FREE NO OBLIGATION CONSULTATION
VIRTUAL CONSULTATION AVAILABLE
ON SITE CONSULTATION AVAILABLE
Innovative Wimbledon Extensions Crafted with Exceptional Architecture
Our Wimbledon architects create smart, sustainable extensions that suit your space perfectly.
Wraparound
We specialise in wrap-around extensions. This is a popular way to expand and transform properties. This extension combines a rear and side addition. It creates an L-shape that expands ground-floor space. This is ideal for open-plan kitchens, living spaces, or adaptable rooms that fit modern lifestyles. We handle everything from design and planning permission to construction.
Single Storey
A single-storey extension can really boost space in your Wimbledon property. It can be added to the back or side of the property. This addition offers more space for a modern kitchen, a living area, or a home office. This extension improves the flow inside and makes the property more practical. Our architectural team makes it easy for you to get great results that suit your property.
Multi Storey
A multi-storey extension in Wimbledon can provide a lot of space. You can use it for extra bedrooms, bigger living areas, or more bathrooms. Building up on your property lets you make the most of it without losing any garden space. We take care of everything. This includes planning, permissions, and construction. We ensure your extension fits well with the current architecture.
Side Return
A side return extension utilises the unused space beside your home. You often find this addon in Victorian and Edwardian buildings in Wimbledon. Clients can extend into this narrow area to make a wider, open-plan kitchen. This change will let in more natural light. Our architects are experts in side return extensions. These designs boost functionality and add to the property’s value.
Rear Extension
A rear extension expands the back of your property. This gives you room for an open-plan kitchen, a larger dining area, or a more spacious living room. This is ideal for clients looking to improve their ground floor. These extensions boost natural light and link indoor and outdoor spaces smoothly. We create rear extensions that match your home’s style. They also boost efficiency and value.
Seamless Wimbledon Home Extensions from Concept to Completion
Our team of architects, designers, and builders in Wimbledon creates stylish and practical home extensions. We handle each stage, from the first meeting to the final build, with care and precision.
Free Initial Consultation
In your 30-minute free consultation, we’ll discuss your project vision, design choices, size, and budget for the extension. This process ensures that we can align your ideas with the practical aspects of the project with accuracy.
Full Architecture Service
We offer bespoke services for home extensions. This features on-site assessments, detailed drawings, 3D visualisations, planning applications, and tender management. We customise each service to meet your unique needs.
Planning & Permissions
Our Wimbledon architects focus on extension planning. Our professional practice handles it all, from the initial idea to final approval. We carefully find ways to handle local rules, stay within zoning laws, and meet building codes.
Complete Building Works
We’re a full-service architecture firm that specialises in extensions. We have in-house architects, interior designers, and building contractors. Our team ensure easy collaboration, guiding your project till its delivery.
Local Topic
General information only. Planning and licensing rules change and depend on the individual property. This article is not legal or professional advice.
WIMBLEDON — THE FABRIC NUMBERS: U-VALUES YOUR EXTENSION MUST HIT (DOC L)
That’s the U-value a new extension wall has to hit under Approved Document L — Volume 1, Table 4.2, if you’re hunting through the PDFs — watts lost per square metre, per degree of difference between your kitchen and a Wimbledon February. Roofs have to do better: 0.15. Floors, 0.18 again.
Windows and doors get away with about 1.4, and yes, you read that right — the best glazing money can buy leaks heat several times faster than an ordinary insulated wall. Hold that thought, because it explains half of extension design.
We hired a thermal-imaging camera one January to settle an argument about a two-year-old rear extension. Signed off, certificated, handsome. The client swore it ran cold and the bills agreed with her.
On the little screen, the walls showed deep blue — textbook. Then the junction with the original house lit up orange, a warm stripe the length of the room, and one lintel wore a glowing halo.
Fifty millimetres of missing insulation behind that lintel. Ten careless minutes, two years earlier, invisible since plastering day.
Her builder’s position, reported verbatim: “It’s all insulated, mate.”
What the numbers buy, and what they can’t
Those decimal points translate into bulk. Walls fatten — full-fill cavity or a well-built timber frame. Roof build-ups go deeper than anything the twentieth century nailed together.
The floor gets a duvet of rigid insulation that Victorian slabs never imagined. None of it is exotic anymore; a wall at 0.18 sheds heat at under half the rate of what the nineties were proudly building, and your heating system shrinks to match.
But — and the camera made this point better than any lecture — the certificate assumes continuity. Insulation that stops at a badly drawn junction might as well be a rumour there.
The trade calls these cold paths thermal bridges, the BRE has spent decades documenting how much performance they quietly eat, and the worst offender in extension work is always the same spot: the line where new meets old.
Airtightness is the other invisible: warm air sneaking out through gaps no drawing ever showed. So when we specify, the junction details and the air barrier get as much ink as the insulation thickness.
When building control visits, the moments that matter are the ones you can’t reconstruct after plastering.
Glass, meanwhile, gets judged by whole-unit U-value — frames included. Centre-pane numbers are the flattering angle; the GGF publishes what complete units genuinely deliver, and it’s why the old quarter-of-floor-area glazing convention still earns its keep.
Two closing habits from Merton jobs. File the calculations with your completion certificate — a future buyer’s surveyor will ask, and paperwork answers cheaper than excuses. And if a finished extension ever feels colder than its paperwork claims, don’t argue.
Hire the camera. The Energy Saving Trust can preach fabric-first all it likes; nothing converts a household like watching their lintel glow.
Wimbledon Home Extension Planning, Design, and Construction
Feasibility Studies for Home Extensions
Our Wimbledon property extension architects carry out comprehensive feasibility studies. They look at structural integrity, space potential, and costs. This ensures that property expansions are smart and efficient.
Planning Permission for Extensions
Our team of architects collaborates with local councils. We navigate planning policies, building codes, and zoning laws to ensure smooth compliance. Our expertise simplifies the process, providing a stress-free experience.
Project Management and Contractor Coordination
We monitor construction progress, project timelines, and project quality. This way, we ensure everything operates without issues and according to schedule. We focus on details to ensure everything runs smoothly from start to finish.
Sustainable Extension Materials & Energy Efficiency
Our eco-friendly extension designs and insulation solutions improve property energy efficiency, sustainability, and comfort. Our approach reduces environmental impact and improves thermal performance.
Structural Engineering and Load-Bearing Analysis
We check that extensions meet safety, stability, and regulatory standards. We do this with structural assessments and compliance checks. Our team makes sure that a property extension blends in well, is safe, strong, and built to endure.
Interior To Exterior Extension Flow and Aesthetic Integration
Our architects mix new extensions with the current style. This creates a smooth transition between the old and the new. Our architects respect the original structure while enhancing functionality, aesthetics, and flow.
why work with us?
Fast Turn Around
We deliver swift completion of extensions by leveraging our efficient planning, expert team, and streamlined project management, ensuring a smooth and expedient process.
Fixed Pricing
We provide transparent, fixed pricing for architectural and building services for extensions, offering clients a clear understanding of costs. This approach allows for confident budgeting.
We Maximise Value
We guide clients to achieve the best outcome for extensions, balancing the investment benefits with a comfortable living space. Our expert advice ensures maximum financial value.
Turnkey Operation
We offer a full-service for home extensions, guiding clients from the initial consultation to project sign-off. You will have a dedicated account manager overseeing every detail.
recent EXTENSION projects
Local Topic
General information only. Planning and licensing rules change and depend on the individual property. This article is not legal or professional advice.
WIMBLEDON — THE PANTRY EXTENSION: LARDERS AND COLD STORES WORTH ADDING (DESIGN)
Odd thing to admit, but the room people get most excited about in a Wimbledon extension brief these days isn’t the kitchen. It’s the cupboard next to it.
Fine — larder, pantry, whatever your family calls it. The walk-in one, with the door. Five years ago hardly anyone asked.
Now it’s in most briefs before we’ve even got the tape measure out, and honestly? We’re pleased. It’s one of those rare fashions that’s actually right.
Bear with the maths for a second, because this is the bit that converts people. Two and a half square metres of walk-in larder — that’s it, a big cupboard — holds more than six metres of wall cabinets. More, realistically, because open shelves don’t have dead corners where the paella rice goes to die. Shallow shelves up top for jars.
Deep ones down low for the mixer and whatever bulk-buy phase the household’s in. Everything visible. Less waste, and you stop buying a fourth jar of cumin because you can see the other three.
And here’s what it does to the kitchen, which is really the point. No upper cabinets. None. The storage all lives behind one door, so the kitchen walls go clear — windows, splashback, breathing room. People want a calm minimal kitchen and they also own a lot of stuff. Those two facts have been at war for decades. This is the truce.
Now the old-fashioned part, which we’d argue is the best part. A larder is supposed to be cool. Not fridge-cool — cellar-cool. North or east side of the extension if the plan allows.
A vent to outside (the Approved Document F ventilation rules are perfectly comfortable with a vented larder — it’s a very old idea wearing modern paperwork). And a slate or stone shelf, because the thermal mass keeps butter, cheese and veg happy without a watt of electricity.
Nothing here is our invention. The Victorian Society will tell you every substantial house round here had one, built exactly this way, and the physics — CIBSE has it all if you like graphs — hasn’t budged since.
Position is the make-or-break. Just off the working end of the kitchen, not in the middle of it. Near where the shopping lands.
Light on the door switch — sounds trivial, gets forgotten, matters daily. And decent joinery, please; a room made entirely of shelves lives or dies on them, which is where a proper BWF workshop earns its money over flat-pack.
Can you go further? Course. Wine on the cool wall, chilled drawers, a conditioned walk-in if you cook like it’s a second job. But the basic version needs no kit at all, which is rather the charm.
Planning barely notices an internal room — the extension around it answers to Merton as normal. Small room.
Cheap, as extension decisions go. And in our experience it’s the door guests open first and the one the household uses most. Not bad for a cupboard.
FAQ
Services
Payte Architects London offers a comprehensive range of architectural services. Our skilled architects specialise in different areas. This lets us customise our approach for the many aspects of architectural design.