Unit 23, Battersea Business Centre
99-109 Lavender Hill
London SW11 5QL
Get a Free Consultation
Get a free consultation today





    0207 228 1324 Get in touch via phone
    [email protected] Get in touch via email

    Interior Design

    A well-designed interior does more than simply look beautiful – it enhances how you live, feel, and interact with your space. At Armstrong Simmonds Architects, our interior design service is carefully integrated with our architectural approach, creating homes that are cohesive, timeless, and highly personal.

    Working from our architect studio in Battersea, we provide Interior design services ourselves or through collaboration with other London based Interior Designers, who may also be appointed by the client.

    1
    Concept
    2
    Planning
    3
    Visualisation
    4
    Technical
    5
    Specification
    6
    Interior Design
    7
    Tendering
    8
    On Site
    This image represents the sixth stage of an architectural service: Interior Design – Furniture, Fittings & Equipment. At this stage, we curate and specify high-quality furniture, fittings, and equipment to complement the overall design concept. Our approach ensures a seamless integration of style, comfort, and functionality. Throughout the process, we provide transparent insights into the costs of architectural services, helping clients make informed decisions that align with their budget while maintaining high standards of quality and design.

    Why Choose Our Professional Interior Design Services

    Interior design is about balance: between form and function, light and texture, structure and comfort. Our design process focuses on crafting spaces that not only reflect your personal taste but also support your lifestyle, making the most of natural light, materials, and proportion.

    What makes our approach unique is how seamlessly it connects with our architectural services. We don’t treat interior design as an afterthought – we plan and coordinate interiors from the early stages, aligning layouts, material choices, and furniture placement with the architectural vision of your home.

    Our clients benefit from:

    • A holistic approach that blends architecture and interiors
    • Attention to detail across all design elements
    • Flexible collaboration with other consultants or interior teams

    Whether you want a full interior design package or specific support with finishes, we adapt our service to your needs.

    Cost for Interior Design Services

    The cost of interior design services in London depends on the scope, size, and complexity of the project. At Armstrong Simmonds Architects, we offer flexible pricing tailored to your brief:

    Image
    Icon

    Consultation-only: Ideal for clients who need early direction or material suggestions

    Icon

    Room-by-room design: For clients wanting focused support in specific spaces

    Icon

    Full-service interior design: End-to-end planning, specification, sourcing, and styling

    Indicative pricing can range from £1,000+VAT for consultation-based support to £100-£250 per square metre for comprehensive design packages. During our initial discussions, we will provide a proposal outlining a clear scope and fee structure.

    Let's discuss your project
    Contact us to learn more Сontact us to set up meeting

    Our Process for Interior Design Services

    Every project begins with understanding how you live – and how you want to feel in your home. Our process is structured but adaptable, depending on the level of service you require.

    1
    Initial Consultation

    We begin with a conversation about your goals, preferences, and the existing or proposed architecture of the space. This stage may be conducted in-person or remotely, and includes reviewing any inspiration or reference material.

    2
    Moodboards and Concept Direction

    Based on your brief, we develop design concepts that establish a visual tone for the interiors – from colours and textures to spatial ambiance. These may include sample boards, imagery, and initial sketches.

    3
    Lighting and Spatial Planning

    Our plans ensure each space is optimised for comfort and usability. We consider lighting layers (ambient, task, accent), outlet positions, and how natural and artificial light interact with finishes and textures.

    4
    3D Visualisation (Optional)

    For clients looking to visualise interiors before implementation, we can provide 3D architectural modelling to preview layouts, finishes, and lighting atmospheres.

    5
    Procurement and Installation Support

    We can assist with sourcing, purchasing, and overseeing deliveries and installations to ensure the final result aligns with the design intent.

    Image
    ?>
    chris walters

    We are glad we found Armstrong Simmonds Architects to help us on our first project. We had bought a run-down terraced house near Clapham Common with the goal of extending and refurbing to increase value. John initially impressed us by first listening carefully to what we wanted to do, then showing us creative ways to achieve the results and finish we were looking for.

    Safe to say we certainly have managed that and both John and Alan have been instrumental in doing so. The guidance and consideration at every step have exceeded our expectations and Alan’s attention to detail during the build has been critical for the high standards we have set for this project.

    They have provided us with a service which reflects every stage of the design and build. Starting with the initial drawings, schedule of works, tendering and interior design. We also employed ASA for Contract Administration to be the key middle-man between us and the builder, which they were happy to help.

    We are now underway with our second project with ASA and they have been able to deliver the final drawings for planning within a fairly tight time frame, without hindering on quality. I know the whole team worked hard to help bring our vision to life and it’s been brilliant working with them over the last 18 months. They have shown a great ability to solve any issues that arose quickly and are able to communicate effectively with different contractors at all levels. I have no doubt the next redevelopment project will go well.

    ...>>
    ?>
    Matt Wood

    We chose Alan and John for our extensive project and incredibly pleased with that choice and the result. We have a Victorian terraced house and wanted to do a classic loft conversion and ground floor extension. The Armstrong Simmonds team provided a vision which achieved our goals, but with a design we could have never have thought of ourselves which we love. We used them from start to finish and are incredibly glad we did. Alan supported us through the tender and renovation processes, and we are incredibly pleased with the end-product and the quality of work of builder Cezar of Vecchini. We would highly recommend Armstrong Simmonds for their vision, design thoughtfulness and exceptional assistance through the project. Thanks team!

    ...>>
    ?>
    Dom & Kamilla

    We worked with Alan and the team from Armstrong Simmonds for 3 years from start to finish to achieve the full renovation of a London townhouse. It was a challenging brief given the nature of the property but collectively what has been achieved is an outstanding end result. Alan and John thoughtfully incorporated our vision with the realities of converting an old Victorian house and the scrupulous attention to detail, symmetry and balance achieved in the design were instrumental in us choosing Armstrong Simmonds in the first place.

    In addition Alan supported us through the tender and during the renovation working with our excellent builder Cezar of Vecchini to deliver the brief. I would highly recommend if you are looking for a team to turning your vision to the end product with a very high attention to detail while still being good humoured and a generally great guy to work with. Thanks again team. Dom and Kamilla

    ...>>
    ?>
    Michael van Ree

    John and his team have been brilliant to work with for our full house renovation and extension in SW London. Our house is quite unique and that combined with it being in a conservation area we knew it wouldn’t be a straight forward planning process – but Armstrong Simmonds did a fantastic job and helped us navigate us through every step. We couldn’t be happier with the detailed design and outcome.

    ...>>

    Frequently asked questions

    What's included in full-service interior design?

    Full-service interior design includes concept development, material and furniture selection, lighting design, layout planning, and procurement support. It’s a comprehensive solution for clients who want end-to-end coordination.

    How long does the interior design process take?

    Timeframes vary depending on the scope of the project. A single room may take 4-6 weeks from brief to final design, while full-house designs may extend over several months depending on construction and delivery schedules.

    Do I need to use your architectural services to access interior design?

    Not necessarily. While many clients combine both, our interior design services are available as a standalone offering. However, working with the same team can improve coherence and reduce complexity.

    Can I use my own furniture or art pieces in the design?

    Absolutely. We design with your lifestyle and existing possessions in mind, integrating cherished pieces or artworks into a fresh, cohesive scheme.

    How to Request Interior Design Services from Armstrong Simmonds Architects Studio

    If you want to explore your project in 3D along with our other architectural services, you can:

    0207 228 1324 Get in touch via phone
    [email protected] Get in touch via email
    Armstrong Simmonds Architects Ltd
    Unit 23, Battersea Business Centre,
    99-109 Lavender Hill, London, SW11 5QL

    Get a free consultation today





      Image