Architects in Teddington for Extensions, Loft Conversions & Planning
From planning applications to structural calculations, Salstan helps Teddington homeowners transform their Victorian and Edwardian homes with expertly designed extensions, loft conversions and open-plan living spaces.
From planning applications to structural calculations, Salstan helps Teddington homeowners transform their Victorian and Edwardian homes with expertly designed extensions, loft conversions and open-plan living spaces.
Architectural Services in Teddington
Teddington sits at the heart of the London Borough of Richmond upon Thames, where the River Thames reaches its tidal limit at Teddington Lock. The area’s housing stock is predominantly Victorian and Edwardian — handsome terraces along Broad Street and Church Road, substantial villas on Park Road and Udney Park Road, and charming period cottages in the village centre. Many of these homes were built during the railway boom after 1863, and their generous proportions and rear gardens make them ideal candidates for house extensions, loft conversions, and comprehensive refurbishments.
As architects working across the Richmond borough, Salstan Architecture understands the unique character of Teddington’s residential streets. With six conservation areas covering much of the town — High Street Teddington, Teddington Lock, Broad Street, The Grove, Broom Water, and Park Road — working with an architect who understands Richmond Council’s expectations is essential. Article 4 Directions apply across these conservation areas, removing permitted development rights for changes to windows, roofing materials, and front boundaries.
Whether you live in a Victorian terrace near the High Street, a larger Edwardian property close to Bushy Park, or a 1930s semi in Fulwell, we combine strong design with local planning knowledge to deliver extensions and conversions that respect the area’s character while transforming how your home works. Our services include rear extensions, kitchen extensions, wraparound extensions, double-storey extensions, dormer and L-shaped loft conversions, basement conversions, and full structural engineering. We handle everything from initial feasibility through planning permission and Building Regulations to construction.
House Extensions for Teddington Homes
Rear Extensions in Teddington
Ground-floor extensions to create open-plan kitchens, dining areas and living spaces that flow into your garden.
Learn MoreLoft Conversions in Teddington
Dormer, hip-to-gable and mansard loft conversions designed for Teddington's Victorian and Edwardian rooflines.
Learn MoreHouse Extensions in Teddington
Single storey, side return and multi-room extensions tailored to your home's existing footprint and character.
Learn MoreKitchen Extensions in Teddington
Modern kitchen-diner extensions with bifold doors, rooflights and layouts designed for family living.
Learn MoreWraparound Extensions
Side and rear combined extensions to maximise internal space on corner or wider-plot Teddington properties.
Learn MoreDouble Storey Extensions
Two-storey extensions adding bedrooms, bathrooms and living space for growing Teddington families.
Learn MorePlanning Permission in Teddington
Householder applications, lawful development certificates and permitted development checks submitted to Richmond Council.
Learn MoreBuilding Regulations Drawings
Detailed technical drawings for Building Control approval, covering structure, insulation, drainage and fire safety.
Learn MoreStructural Engineering
Beam calculations, steelwork specifications and structural engineering for your Teddington project, all handled in-house.
Learn MoreOur Featured Works
Loft Conversions and Dormer Designs in Teddington
A loft conversion in Teddington is one of the most popular home improvements in the area. The Victorian and Edwardian terraces and semi-detached houses that characterise much of Teddington typically have pitched roofs with excellent headroom for conversion. Dormer loft conversions are particularly popular, adding a new bedroom, en-suite bathroom and storage space without changing the front elevation of the home.
For terraced houses, an L-shaped dormer loft conversion creates a spacious double bedroom with en-suite within the 40 cubic metre permitted development allowance. Semi-detached and detached properties benefit from a 50 cubic metre allowance, accommodating larger dormers or hip-to-gable conversions that unlock even more usable space. You can view our loft conversion plans and pricing for an idea of costs.
However, within Teddington’s six conservation areas, dormer conversions facing the street will typically require planning permission from Richmond Council. Mansard conversions always require full planning approval. The council expects materials to match the original roof, with the dormer set back from the eaves and below the ridge line. Our in-house structural engineers ensure every design is buildable and compliant with current Building Regulations. You may also need a party wall agreement if your loft conversion affects a shared wall.
Victorian and Edwardian House Extensions in Teddington
Period Property Expertise
Victorian and Edwardian homes in Teddington have distinctive proportions, bay windows and decorative features that require sensitive design. We work with the existing character, not against it.
Garden-Facing Extensions
Many Teddington properties have generous rear gardens, making them ideal for single-storey and wraparound extensions that bring the outside in.
Conservation Sensitivity
Parts of Teddington Broadway, Haven Green and Teddington Common fall within conservation areas. We design within these constraints to secure planning approval.
Family-Focused Layouts
Open-plan kitchens, extra bedrooms and playrooms are the most common requests from Teddington families. We design spaces that adapt as your family grows.
Side Return Potential
Many Victorian terraces in Teddington have narrow side returns that can be incorporated into a kitchen extension, transforming a dark galley kitchen into an open-plan living space.
Adding Property Value
A well-designed extension or loft conversion in Teddington can significantly increase the value of your home while giving you the space you need now.
Planning Permission Support in Teddington
Securing planning permission in Teddington is not always necessary — not every extension requires a full planning application. Many single-storey rear extensions and certain loft conversions fall within permitted development rights, meaning you can build without formal approval. However, Teddington’s six conservation areas and associated Article 4 Directions significantly restrict these rights for many properties.
If your property is within the High Street Teddington, Teddington Lock, Broad Street, The Grove, Broom Water, or Park Road conservation areas, most external alterations will require a planning application to Richmond Council. Even outside these areas, we always recommend confirming your property’s planning status before starting design work. Our blog post on house extensions in Richmond covers the borough’s planning landscape in detail.
At Salstan Architecture, we work regularly with Richmond’s planning department and understand their expectations. We prepare all planning drawings, design and access statements, and supporting documents. We also submit lawful development certificates where your project falls within permitted development. For larger or more sensitive projects, we recommend a pre-application enquiry to get early feedback from a planning officer. We also handle Building Regulations submissions and structural engineering in-house, plus party wall services when needed.
We cover the wider Richmond borough and surrounding areas including Richmond, Kingston upon Thames, Wimbledon, Putney, Wandsworth, Sutton, Fulham, Barnet, and Ealing. Get in touch to discuss your Teddington project.
Our Teddington Design and Planning Process
Your 3D Site Survey
An appointed surveyor will carry out a full measured survey of your property, noting down all your desired requirements for your proposal.
Drawings Initiated
Your project is allocated to one of our architectural designers who will design it from the ground up, taking into account all your needs.
You Review It
Your first draft is typically ready in 7 working days, and within 10 at the latest. Review the designs, send us any changes, and we’ll finalise your drawings for submission.
Submission & Decision
Your plans will be submitted strategically for swift council approval. Expect a decision in 6–8 weeks. We handle any required changes for free.
Technical Design
Once plans are approved, our Structural Engineers and Architects will manage the Structural Design and Building Regulations compliance. You can also get construction quotes from us to compare.
Construction
If you decide to build with us, we arrange a detailed consultation to finalise your requirements and ensure everything aligns perfectly with your vision.
Ready to start your project?
Get a Free ConsultationWhy Teddington Homeowners Choose Salstan
Richmond Borough Knowledge
We work extensively across Teddington, Twickenham, Hampton and surrounding areas, understanding local planning expectations and housing styles.
Structural Design In-House
No need to hire a separate structural engineer. We handle beam calculations, steelwork and load-bearing assessments internally.
Fixed-Fee Pricing
Clear pricing from the start with no hidden costs or hourly surprises. You know exactly what you are paying for.
RIBA-Aligned Workflow
A structured design process that keeps your project on track from initial brief through to construction.
3D Visuals Included
See your extension or loft conversion in 3D before a single brick is laid. Included in every design package.
One Point of Contact
A dedicated designer manages your Teddington project from start to finish, so nothing falls through the cracks.
How Much Does an Extension or Loft Conversion Cost in Teddington?
We believe in transparent pricing from the start. Below are our starting prices for the most common Teddington extension and loft conversion projects. Your final fixed-fee quote is confirmed after we understand your property, scope and council requirements.
- Full 3D measured survey
- Architectural drawings
- Unlimited revisions
- Planning submission
- Full 3D measured survey
- Architectural drawings
- Unlimited revisions
- Planning submission
- Full 3D measured survey
- Architectural drawings
- Unlimited revisions
- Planning submission
Your final price depends on property size, planning route, conservation area status and structural complexity. We discuss all of this during your free initial consultation before you commit to anything.
Our Portfolio
Rainham, London
Rear Extension
Single-storey rear extension with bi-fold doors and contemporary kitchen design.
Gerrards Cross
Rear Extension
Elegant rear extensions with big bifold doors, apex windows and skylights, flooding the space with maximum natural light.
Ilford, London
rear Extension
Modern rear wraparound extension to a victorian property creating seamless indoor-outdoor living with floor-to-ceiling glazing.
Croydon, London
Wraparound Extension
L-shaped wraparound extension maximising ground floor living and dining space. On this project we actually completed the loft dormer extension, double storey side and partial first floor rear extensions too!
Kensal Rise, London
Wraparound Extension
Side and rear wraparound extension with modern kitchen and open-plan family area. Featuring big crittal doors and large skylights on the sloping roof.
Wandsworth, London
Wraparound Extension
Full wraparound extension with panoramic glazing and premium specification. Can you spot the overall balance with the L-shape loft dormer extension we also designed for this client?
Bromley, London
Double Storey Extension
Two-storey side extension with matching brickwork, extra bedrooms and bathrooms. In fact we also re-designed the entire loft space and had major approvals for an approx 6m by 14m ground floor wraparound extension!
Windsor
Double Storey Extension
Grand double-storey rear extension with integrated garage and a full internal remodel of the entire home.
Richmond, London
DOUBLE STOREY EXTENSION
Grand double storey rear extension with open-plan kitchen-diner and master suite above.
Merton, London
Loft Conversion
Hip-to-gable dormer loft conversion/extension to accomodate a master suite with a walk-in wardrobe and a modern ensuite.
Purley, London
Loft Conversion
Front cottage dormers and a large rear box dormer extension/conversion with Juliet balcony and vaulted ceiling bedrooms. This was pure luxury.
Thames Ditton, Surrey
Loft Conversion
Hip-to-gable loft dormer conversion/extension with premium finish. We had to design something different as opposed to the standard dormer extension so it can blend in with the rest of the extensions we designed for this house.
East London
Flat Conversion
Victorian end of terrace mixed use properties converted into a luxury two-bedroom flats with modern amenities.
Crystal Palace, London
Flat Conversion
Property subdivisions into modern self-contained apartments.
Barnet, London
Flat Conversion
Full house-to-flats conversion with multiple large extensions and comprehensive planning and building regulations approval.
Wembley, London
New Build
Contemporary new-build family homes with open-plan living and sustainable design features.
Surrey
New Build
Bespoke new-build bungalow development designed from foundation to completion.
Harrow, London
New Build
Multi-unit new-build project with distinctive architectural detailing and landscaping.
Areas We Cover Around Teddington
The historic heart of Teddington with Victorian cottages and Edwardian homes along the High Street and Broad Street. Six conservation areas cover much of the town centre, so most extensions require planning permission from Richmond Council.
Period terraces and substantial villas along the Thames near Teddington Lock. Properties here often have generous plots ideal for rear and wraparound extensions, though the Teddington Lock conservation area requires sensitive design.
A popular residential area with a mix of Edwardian terraces and 1930s semi-detached homes. Loft conversions and single-storey rear extensions are the most common projects, and many homes here retain permitted development rights.
Immediately south of Teddington, Hampton Wick features Victorian terraces and Edwardian semis. Its proximity to Kingston and Bushy Park makes it highly desirable. Side return and kitchen extensions are particularly popular here.
A family-friendly neighbourhood with wide streets and period houses. The High Street conservation area requires careful design, but generous rear gardens offer excellent extension potential.
Named after Horace Walpole's Gothic villa, Strawberry Hill has a distinctive mix of Victorian and Edwardian properties. The Strawberry Hill conservation area means most projects need planning permission, and we design with local character in mind.
One of Richmond borough's largest centres, with substantial Victorian villas, Edwardian terraces and riverside properties. Twickenham offers excellent potential for double-storey extensions and loft conversions on its larger family homes.
Just across the bridge from Teddington, Kingston features a mix of Victorian, Edwardian and inter-war housing. We cover Kingston for extensions, loft conversions and planning applications.
The borough's historic centre with 85 conservation areas. Our Richmond architects page covers the specific planning challenges of extending in this highly protected area.
A compact riverside neighbourhood with charming period cottages and Victorian terraces. Rear extensions and loft conversions can transform these smaller homes without compromising their character.
Frequently Asked Questions About Architects in Teddington
We are here to help with your Teddington extension, loft conversion or planning query.
- Free initial consultation
- Richmond Council planning experts
- In-house structural engineers
- Fixed-fee pricing guarantee
It depends on the size and location of your property. Many single-storey rear extensions fall under permitted development rights, meaning you can build without a full planning application. However, properties in conservation areas or those subject to Article 4 Directions may need full planning permission. We check your property's planning status before starting any design work.
Yes, most Victorian and Edwardian properties in Teddington are well suited to loft conversions. Dormer conversions are the most common type, adding a rear dormer to create a new bedroom, bathroom or home office. For semi-detached homes with hipped roofs, a hip-to-gable conversion can unlock even more usable space.
Very common. Rear dormers are one of the most popular home improvement projects across the Teddington area. They add valuable floor space without changing the front elevation of your home, which is particularly important in conservation-sensitive streets.
Absolutely. We prepare all planning drawings, design and access statements, and supporting documents required for a householder planning application to Richmond Council. We also prepare lawful development certificates where your project falls within permitted development.
Yes. We produce detailed building regulations drawings covering structural design, insulation, drainage, ventilation and fire safety. These are required for Building Control sign-off before construction can begin, and we prepare them as part of our standard service.
Yes. Unlike many architectural practices, we have structural engineering capability in-house. This means we handle beam calculations, steelwork specifications and foundation design without you needing to hire a separate structural engineer, saving time and coordination.
Rear extensions and side return extensions are the most popular for Victorian terraces, creating open-plan kitchen-diners with bifold doors opening onto the garden. For larger properties, wraparound extensions combine side and rear to maximise space. Loft conversions suit almost all Teddington house types.
From initial consultation to a planning decision, the process typically takes 10 to 14 weeks. This includes the survey, design development, drawing preparation and the statutory planning determination period. If your project falls under permitted development, the timeline is usually shorter.
Yes. We regularly take on projects where a previous planning application has been refused by Richmond Council. We review the decision notice, identify the specific reasons for refusal and redesign the scheme to address those issues. In many cases a refusal is caused by problems with scale, massing, design detail or impact on neighbours, all of which can be resolved with a more considered design approach.
We can advise on whether your project triggers the Party Wall Act and help you understand the process. If your extension is built on or near a shared boundary, or involves work on a party wall or within certain distances of a neighbour's foundations, you may need to serve party wall notices. We design with boundary constraints in mind and can recommend experienced party wall surveyors when needed.
Absolutely. During your initial consultation we discuss your goals and your budget range. We then design a scheme that balances what you want to achieve with what is realistic for your budget. We can also provide guidance on likely construction costs based on similar projects we have worked on, so you have a clearer picture before committing to a builder or contractor.
Planning an Extension or Loft Conversion in Teddington?
Book a free consultation to discuss your project with our Teddington design team. From planning drawings to structural calculations, we handle everything under one roof.
