PAYTE
Extension Architect Islington
Principal Designer & Higher Risk Building Expert
Our Islington 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 Islington
Our firm specialises in house architecture in Islington, 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 envisioning the transformation, alongside a precise scope of work for the building contractor.
As a trusted extension architect firm in North London, we ensure every project is expertly planned to maximize space while adding significant value to your property.
apartment Extension
architects
We specialise in providing comprehensive design and architectural services for apartment extensions in Islington. 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.
We offer London extension architects that manage every stage of your project, ensuring a seamless integration of style and functionality for modern living.
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 Islington 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 Islington 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
Our leading architect firm in London offers clients a free 30-minute consultation—book yours today to discuss your project with our ARB or RIBA Architects.
FREE NO OBLIGATION CONSULTATION
VIRTUAL CONSULTATION AVAILABLE
ON SITE CONSULTATION AVAILABLE
Innovative Islington Extensions Crafted with Exceptional Architecture
Our Islington 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 Islington 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 Islington 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 Islington. 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 Islington Home Extensions from Concept to Completion
Our team of architects, designers, and builders in Islington 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 Islington 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.
ISLINGTON — GROWING THE CLOSET WING: EXTENDING THE GEORGIAN BACK ADDITION (DESIGN)
Strip the plaster off a Barnsbury closet wing and you can read its whole life. We did exactly that on a survey two summers ago: original 1820s brickwork at the bottom, a Victorian extension of the wing in harder machine-made brick above, a 1970s bathroom conversion’s blockwork patching one corner, and — the owner’s favourite discovery — a bricked-up window nobody had known was there. Four campaigns of building in one narrow wall.
The client asked the obvious question: “So can we extend it again?” And the honest answer is the whole story of Islington’s rear additions: of course. That’s what these tails are for. They’ve been growing for two hundred years.
Know your wing before you grow it
The closet wing — the narrow back projection holding the old scullery, stacked two or three storeys — was the Georgian economy wing: thinner walls than the main house, shallower footings, cheaper everything.
Which sets the first rule, learned on that Barnsbury wall: measure and investigate before trusting any drawing.
Two centuries of alteration mean the survey is the only truthful document these tails possess. Wall thicknesses vary floor to floor.
Footings can be a few brick courses sitting on clay.
The engineer designs against what the trial pit finds, not what the estate agent’s floorplan implies, and any new work leaning on the old wing gets proven first — Approved Document A has no sentimentality about heritage brickwork.
Three directions, one grammar
The wing grows three ways. Sideways — across the plot’s remaining slot, the Islington cousin of the side return, the galley kitchen becoming full-width.
Deeper — pushing further into the garden while keeping the slim proportions, often the gentler consent conversation. Or both at once, the L-plan that redraws the whole rear.
Whichever direction, the grammar matters more than the ambition, because the wing-and-gap rhythm is the Georgian back.
The Georgian Group’s guidance on rear additions makes the case that these modest tails carry real character, and Islington’s planning map — Barnsbury sits almost wholly in conservation areas — reads rear schemes against exactly that grain.
Keep the wing legible as a wing: roofline stepping down from the parent house, the gap to next door’s wing preserved, since that slot is the daylight both households breathe through and the BRE conventions referee it without sentiment.
Then the junction craft: new work meeting soft London stock and lime mortar on those shallow footings means foundations designed deeper than the wing’s own, movement accommodated where fresh construction meets settled, and brick matched with real care — the comparison stands side by side forever.
That Barnsbury wing, by the way, got its fifth campaign: widened, re-roofed, the mystery window reopened over the new sink.
Someone in 2080 will strip the plaster and read our chapter too. Write it properly.
Islington Home Extension Planning, Design, and Construction
Feasibility Studies for Home Extensions
Our Islington 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.
ISLINGTON — PLUMBING THE EXTENSION: WATER IN, WASTE OUT, PARTY WALLS RESPECTED (DOCS G AND H)
The glamorous half of an Islington kitchen extension is glass and steel. The half that decides whether it works is buried in the floor before the glass arrives: the water in, the waste out, and the routes both take through a terrace that shares its walls, its drains and — frequently. Its plumbing history with the neighbours.
Waste finds its own level, or doesn’t
Drainage runs on gravity and geometry. Every new fixture — sink, dishwasher, the WC that makes the extension self-sufficient — needs a fall to a stack or gully, and Approved Document H polices the falls, the ventilation of the system and the connections.
The design questions are Islington-specific in flavour: terrace drainage often runs shared — Victorian runs picking up several houses before the sewer — so knowing what you’re connecting to precedes deciding where the island sits.
Moving a kitchen to the garden end of a new extension can put it a long way from the original stack. And the choice between a new external stack, a re-routed run, or accepting the geometry’s limits is a drawing-stage decision with CIPHE-grade design thinking behind it, not a day-two improvisation. Where any build sits over or near public drains, the build-over conversation happens before the slab does.
Supply is the quieter discipline: Approved Document G covers hot water safety and water efficiency, pipe runs get sized and insulated rather than merely connected, and WRAS-compliant fittings keep the water undertaker happy.
The party wall carries pipes too
The terrace’s shared walls add their layer. Chasing new services into a party wall engages the party wall framework; waste pipes clipped to the boundary line need the neighbourly conversation before the fixings.
And acoustics matter both directions — a soil pipe drumming against the party structure serenades next door’s sitting room nightly.
Routes down your own fabric, wrapped and isolated as good technical design specifies, cost pennies at build stage and buy decades of silence.
Water efficiency counts in the sums too — modern fittings meet the efficiency calculator without anyone at the sink ever noticing.
The test of extension plumbing is the same as extension air: invisibility. Water arrives hot and willing, waste departs without commentary, the neighbours hear nothing and the floor never comes up again.
That silence is drawn, in section, before anyone ordered a tap. In a shared-wall borough, it’s some of the best money on the job.
FAQ
Services
Payte Architects London provides a wide range of architectural services. Our talented architects specialise in different areas. Our diversity helps us adjust our approach to various parts of architectural design.