PAYTE
Extension Architect Kensington
Principal Designer & Higher Risk Building Expert
Our Kensington 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 Kensington
Our firm specialises in house architecture in Kensington, 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 maximise natural light and extra space. Our creative design team elevates the planning process to a new level.
As a leading architectural practice, we specialise 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 picturing 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 extension architects practice in West London, we deliver carefully detailed apartment refurbishments and layout reconfigurations shaped around modern living and regulatory requirements.
apartment Extension architects
We specialise in providing comprehensive design and architectural services for apartment extensions in Kensington. 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.
As an experienced architect for extensions, we can offer clients a beautiful, well-considered house extension tailored to your property’s character, planning context, and long-term value.
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 Kensington 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 Kensington 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 architect firm, we offer clients a 30 minute consultation.
FREE NO OBLIGATION CONSULTATION
VIRTUAL CONSULTATION AVAILABLE
ON SITE CONSULTATION AVAILABLE
Innovative Kensington Extensions Crafted with Exceptional Architecture
Our Kensington 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 Kensington 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 Kensington 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 add on in Victorian and Edwardian buildings in Kensington. 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 Kensington Home Extensions from Concept to Completion
Our team of architects, designers, and builders in Kensington 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 Kensington 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.
KENSINGTON — MATCH OR CONTRAST: SHOULD A KENSINGTON EXTENSION LOOK OLD OR NEW? (NPPF; DESIGN)
Every Kensington extension project reaches the same fork in the road, usually around the third meeting.
Do we build it to match — brick for brick, cornice for cornice, so the addition dissolves into the original? Or do we build it honestly new — glass, zinc, crisp shadow lines — so anyone can read exactly where 1870 stops and now begins?
Clients arrive assuming there’s a correct answer. There isn’t. There’s a correct process, and it starts with the building, not the mood board.
What each approach demands
Matching is the harder road, which surprises people. Convincing replication needs the right brick from the right kind of yard, lime mortar struck the old way, joinery sections copied from survey rather than catalogue. Done to that standard it’s quietly superb. Done to eighty per cent it’s the worst outcome available — a pastiche that fools nobody and flatters nothing.
Where the budget won’t stretch to proper matching, half-matching is the worst money spent.
Contrast carries its own discipline. The honest-new extension succeeds through restraint: a limited palette, proportions taking their cue from the host even while the materials refuse to, and detailing sharp enough to justify the confidence.
National policy is comfortable with both roads — the NPPF asks for design quality, not costume — and Historic England’s advice on new work in old settings says plainly that good contemporary design can sit beside historic fabric. The Twentieth Century Society exists partly because yesterday’s confident additions became today’s heritage.
Reading the room, and the borough
The building votes first. A house with a strong, complete rear elevation argues for deference. A back already muddled by a century of lean-tos can welcome one good clean move that reorganises the mess.
Position matters too: work visible from the street carries a different burden from work only the garden sees.
Then the borough. RBKC’s conservation officers assess extensions across some of England’s most protected streetscapes, and the pattern in their decisions rewards conviction either way — what struggles is the timid middle, the extension that neither matches nor commits. Which conveniently matches the design truth.
The choice is the concept decision on any Kensington extension — everything downstream flows from it — and it deserves to be made deliberately, with the arguments written down, before a single elevation is drawn.
The schemes that succeed pick a side and execute it with conviction, because in this borough, half-heartedness is the only approach that reliably fails.
Kensington Home Extension Planning, Design, and Construction
Feasibility Studies for Home Extensions
Our Kensington 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.
KENSINGTON — GLAZING THE FRONT AREA: PAVEMENT LIGHTS AND LOWER-GROUND EXTENSIONS (DOC K)
Look down as you walk a Kensington terrace and the Victorians are still lighting rooms beneath your feet. Those grids of glass lenses set in iron and concrete — pavement lights.
Were the nineteenth century’s answer to a problem the borough still has: how to get daylight into the lower-ground front rooms and vaults that sit below street level.
Extending or upgrading at lower-ground level brings that front zone into play, and it’s a small world with its own rules, materials and opportunities.
The area, the vault, the light
The classic arrangement: a front “area” (the open well between pavement and house), a vault or two burrowing under the pavement itself, and the lower-ground rooms behind.
Modern projects want three things from this zone. More daylight into the front rooms. Useful space in the vaults — plant, storage, occasionally more.
And a front approach that works safely, because the area is a floor-height drop guarded from the street, which is where Approved Document K and its guarding provisions quietly preside over every railing and grille decision.
Original pavement lights reward care rather than replacement. The cast-iron frames are streetscape in their own right — Historic England’s street furniture guidance treats them as part of the public realm’s character — and specialist refurbishment with new glass lenses usually beats ripping out.
Where new walk-on glazing goes in, it’s a designed product: load-rated for the pavement above, slip-resistant, specified to the glazing industry’s standards — the GGF covers the territory — not a rooflight laid flat and hoped over.
Whose pavement is it anyway
Here’s the catch that surprises owners: the vaults and the pavement above them sit in a legal and practical tangle.
The vault may be yours; the surface the public walks on answers to the highway. Works affecting the pavement need conversations beyond your own boundary, and RBKC takes a close interest in anything altering the street’s floor. Especially in conservation areas where the ironwork, the York stone and the rhythm of railings are the protected view.
Structurally, opening up between vault and house, or enlarging the glazed area, is real engineering over a public walkway, with building control engaged as for any structural work.
The reward for doing it properly is a genuinely transformed lower ground: front rooms that stop apologising, vaults promoted from junk stores to working space, and daylight arriving from a direction the house had forgotten.
The Victorians solved this with iron and glass lenses. The modern kit is better. The idea was theirs.
FAQ
Services
We offer a comprehensive suite of architectural services for Kensington, our skilled architects each specialise in distinct disciplines. This diversity allows us to tailor our approach to meet the various facets of architectural design.