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We are a RIBA Chartered Architecture practice founded in 2010 and have carried out projects throughout London and the Southeast of England.
Our team has exceptional experience in the high-end residential sector, working on a wide range of typologies including one off homes, new build apartments, refurbishments, basements, extensions & loft conversions.
We will diligently guide you through each stage of the process, from conceptual design to the completion of your dream project.
Armstrong Simmonds Architects will work with you to develop a concept design, sketching layout options to explore the potential of the property. We will also carry out a full measured survey of the property and its surroundings, allowing us to produce an accurate set of drawings.
Following on from the briefing we will prepare a set of scale drawings reflecting the range of ideas discussed. We will prepare and submit the planning application, liaising with the council as needed throughout the process. Our extensive experience will help facilitate a smooth planning process.
To help you visualise the space in three dimensions we can produce internal and / or external views of your project. This can also be a useful tool to demonstrate the merits of the scheme to planners.
We will produce detailed technical drawings including drainage and electrical layouts, consulting with you to ensure the design meets your needs. We will then submit to building control and manage the approval process. As part of our architectural services during this process we can assist you in appointing other consultants, for example the structural engineer or party wall surveyor.
We offer interior architecture and design for a high spec finish. We can produce further detailed information integrating specialist glazing components, floor finishes, joinery and bespoke staircase design as required.
We provide Interior design architecture services ourselves or through collaboration with other London based Interior Designers, who may also be appointed by the client.
We are happy to specify FF&E (furniture, fittings and equipment) for the project, providing a complete “one-stop” shop for your development.
We will help you make an informed choice on an appropriate contractor. We maintain a selective tender list of contractors especially in the local London area, who we have experience working with on site. We will prepare tender documentation and appraise their quotes.
Armstrong Simmonds Architects facilitates the implementation of the design by administrating a contract between you and the contractor. Amongst a wide array of architectural services, this will include undertaking site visits to monitor the quality of construction and handle any on-site queries from the contractor.
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.
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!
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
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.

At Armstrong Simmonds Architects, we have a wealth of experience working on residential projects of varying sizes with challenging planning and on-site conditions. Our experienced team at our architectural firm will work closely with you from concept design to completion to ensure your project aspirations are met. As an architect studio London, we look to deliver high end design outcomes, whether they are modern or traditional, with a deep consideration for aesthetics and functionality. We aim to do more than extend the footprint of your property by implementing creative design solutions which modernise the fabric, interior architecture, and performance of your home. Each client is different and has varying design aspirations; we will aim to develop a design solution tailored to your specific style. Whether you are looking to upgrade your property to a contemporary style or create a modern blend which complements the historic architecture, our architects studio will work closely with you to achieve this.
Most of our projects deliver bespoke architectural features which have been carefully designed to fit uniquely into your home. These items typically include bespoke glazing, joinery, staircases, lighting, landscaping and much more. We put particular emphasis on glazing; at Armstrong Simmonds Architects, the design expertise of our architect studio allows us to identify how best to incorporate glazing elements into your project to transform what are often dark existing properties. Maximising the presence of sunlight can help to keep your home warm and in turn minimise your energy consumption. These glazing elements are designed in collaboration with glazing specialists to suit design needs.
If you are looking for design inspiration, look no further! Our architecture firm has worked on a variety of projects within London and can guide you through the design process. This process is not only about getting approval for your planning submission, but also making sure we work together to achieve your vision. We do this by working with you to understand your design sensibilities from the outset, then we take you along the concept development journey; sharing updates about the design brought to life using 3D imagery. If you do not have a particular vision in mind, our team can assist you with that during the briefing process. We can provide interior design services or collaborate with an interior designer to achieve the outcomes you desire. This sets the stage for transforming your dream home into reality. Get in touch with us today to discuss your project!