RBD Architecture & Interiors are leaders in the field of residential Mews House renovations, refurbishments and extensions.
RBD Architecture & Interiors are specialist mews house architects in London, with over 20 years’ experience designing mews house renovations, extensions, basements and full refurbishments in Knightsbridge, Belgravia, Mayfair and Kensington.
Mews houses are a defining part of London’s architectural heritage, originally built in the 18th and 19th centuries as stables and coach houses behind grand townhouses. Today, these characterful properties are among the most desirable homes in the capital, especially in Knightsbridge, Belgravia, Mayfair and Kensington. Their charm, privacy and unique proportions make them ideal candidates for sensitive renovation, extension and modernisation.
Across London, mews houses are frequently transformed through carefully designed refurbishments, additional floors such as mansard roof extensions, and new basement levels that significantly increase usable space. As specialist Mews House Architects in London, RBD has extensive experience navigating the structural challenges, conservation area requirements and planning policies that apply specifically to mews streets.
We regularly secure planning permission for mews house extensions, including basement excavations, rear extensions, façade alterations and additional storeys. Our portfolio includes high‑value projects such as Pont Street Mews, which achieved one of the highest price‑per‑square‑foot sales of any mews house in London at the time of completion. Every project is designed to enhance the building’s historic character while delivering bright, contemporary, high‑performance living spaces tailored to modern lifestyles.
Planning permission for Mews house renovations have become intensely complex and we have a 100% success rate for gaining planning consents for additional floor space to include subterranean floors and outdoor areas in London boroughs.
If you would you like to view finished Mews House projects to help you with ideas for layouts, adding additional floors, basement ideas plus design inspiration please call us for a chat.
You can see a selection of our design work in our project portfolio. To help answer some of your questions regarding Mews House renovations, please consult our answers to client’s frequently asked questions.
Basement excavations have proved particularly popular for London mews houses, these subterranean rooms are an excellent way of limiting the visual impact on a property.
At RBD Architecture & Interiors we have previously worked with Local Authorities to achieve and successfully obtain Planning Consent for all types of Mews House extensions and alterations.
Lack of outdoor space in Mews Houses is often resolved with the addition of either a roof terrace, balcony or terrace room (retractable roof – convertible ‘winter garden’). Click to see some examples.
Our services are tailored to suit each client and project. These services are based on the current RIBA Plan of Work which is recognised in the industry as the UK model for the building design and construction process.
The build cost will depend on several variables including the complexity of the design, extent of structural works and level of fixtures, fittings and material finishes. Continue reading to learn more.
We have worked on a number of successful Mews House architecture, renovation and interior design projects. Take a tour through our latest completed Mews House developments in Belgravia, London.
This Westminster mews house is undergoing a full architectural redevelopment, including a new mansard roof extension that adds two additional bedrooms and significantly increases the property’s usable floor area. Behind the retained façade, the house has been completely reconstructed with a new steel core structure, upgraded cavity blockwork walls, enlarged openings and Posi‑Joist floors designed to streamline services throughout the home.
This Westminster mews house is undergoing a full architectural redevelopment, including a new mansard roof extension that adds two additional bedrooms and significantly increases the property’s usable floor area. Behind the retained façade, the house has been completely reconstructed with a new steel core structure, upgraded cavity blockwork walls, enlarged openings and Posi‑Joist floors designed to streamline services throughout the home.
This Knightsbridge mews house underwent a complete architectural transformation, including structural alterations, a new lower‑ground basement level and a full internal refurbishment. Planning consent was secured from the City of Westminster along with Grosvenor Estate Licence to Alter approval. The original internal structure was removed to allow for a new cinema room at basement level, reconfigured living spaces and upgraded façades that respect the character of this historic mews.
Following initial discussions with the client, we will prepare a project strategy and a brief for your Mews House. This will consider the client’s requirements, key objectives, the project budget, programme and design aspirations.
Next, we will arrange a measured survey and gather site information before preparing a feasibility study based on the brief. During this stage, we will outline all project constraints and opportunities, applicable statutory requirements and likely input required from other consultants. Depending on the scale and complexity of the project, it may be necessary to appoint a Quantity Surveyor from this point forward to advise on project cost.
After discussing the results of the feasibility study with the client, we will prepare a concept design focusing not only on form, function and aesthetic, but early consideration of structure and building services. We will also consider materials, method of construction, site logistics and the project budget. The concept design often comprises of multiple options to be discussed and reviewed with the client. We typically use CAD drawings and 3D visuals at this stage to present our work.
Once the concept design has been agreed we will liaise with the local planning authority and any other statutory consultees. We will then prepare and submit the relevant planning applications, supporting drawings, assessments and statements, and manage each application through to determination. RBD Architecture & Interiors have extensive knowledge of local authority planning policy and the planning process and have considerable experience working with listed buildings, conservation areas and greenbelt development. We pride ourselves on maintaining an approval success rate of over 95% including applications of various degrees of scale and complexity.
Once planning consent has been granted,we will prepare the technical design – a construction package of detailed drawings, schedules, product information and health & safety information for pricing. We usually recommend seeking tenders from a minimum of three principal contractors.
The development of the technical design is a continuation of the design process requiring careful coordination of our design with information provided by the other appointed consultants. Our preferred approach is to work closely with our clients during the preparation of this information to make all key design decisions before work commences on site. This will help ensure that the construction cost and programme is kept to a minimum.
The technical design will include important information such as setting out, construction details, mechanical and electrical specifications and Building Regulations notes. All tendering contractors will also be provided with a summary of the proposed Building Contract particulars.
Once a principal contractor has been chosen, we will act as Contract Administrator, assisting with the preparation of an appropriate Building Contract. The client and the principal contractor will formally agree terms relating to the proposed works, the construction programme and the contract value.
During construction, RBD will administer the terms of the building contract, carry out regular site inspections, respond to any contractor queries, monitor progress, and continue to manage and coordinate the design.
On completion of the works, we will prepare all relevant documentation for handover and review the final account.
If you’re planning to buy a London mews house or renovate and extend an existing property, we can help you unlock its full potential. Our team specialises in mews house architecture across Westminster, Belgravia, Knightsbridge, Chelsea and Kensington from basement extensions and roof additions to complete internal reconfiguration.
We carry out early feasibility studies, review planning history and identify any constraints such as conservation area status, structural limitations or estate management requirements. Our experience includes preparing and submitting planning applications, Listed Building Consent and securing approvals from major London estates including Grosvenor, Cadogan, and The Crown Estate.
Whether you’re considering a mansard roof extension, a new basement level or a full mews house refurbishment, we provide clear guidance from the outset to ensure your project starts with confidence and a strong planning strategy.
I cannot recommend Andy and the RBD team enough – absolutely fantastic. I engaged Andy on a major project for 6+ months. At all times he was super professional and knowledgeable. I was DELIGHTED with the results and will definitely use him again!
We are still early in the construction phase but we’re very pleased with the excellent design and advice we’ve received from Andy Willis so far. Our project has been complicated and unusual for various reasons and Andy has gone above and beyond in helping us. Andy has been great at steering us, drawing out what we were looking for and organising us and our priorities. Andy’s great at communicating regularly and we’ve been really pleased at his level of care and attention. We just can’t wait to see the final house, and then I’ll be back to update my review!
I employed RBD Architecture & Interiors to renovate a London townhouse into 2 apartments. Andy did a fantastic job of laying out the space in both properties resulting in both apartments achieving the full asking price in record time. His designs were clever, utilized all available space, and looked fantastic, quickly reminding me of the added value an architect can have on any property. I am currently doing another similar development in London as well as renovating a holiday home in the West Indies and using Andy for both properties was the obvious choice. I am excited to see both come to fruition. If you are looking for a smart and easy-to-work with architect who understands your brief and goes beyond that by offering intelligent solutions to any design problem, then look no further.
RBD have helped with the redesign of various parts (living areas, bedrooms, bathrooms) of our London home over recent years. We are delighted with the results – the mix of arresting vision and ‘fit for use’ practicality. We plan to continue using them in the future.
We were exceptionally pleased with the work done by RBD. They took into consideration all of our asks, came up with innovative solutions for maximizing storage, and worked extremely closely with the builders to ensure the entire process went smoothly from start to finish and that the end result was exactly what we were looking for from an aesthetic and practical perspective.
We were exceptionally pleased with the work done by RBD. They took into consideration all our asks, came up with innovative solutions for maximising storage, and worked extremely closely with the builders to ensure the entire process went smoothly from start to finish and that the end result was exactly what we were looking for from an aesthetic and practical perspective.
RBD Architecture & Interiors helped us with various works to our home including a new master suite. The service provided was excellent and their team have a real eye for detail – especially in Interior Design.
Andy and his team designed our beautiful new home combining creative design with very good ideas and the capacity to deliver on time, with great results.
We have been working with RBD for a while now during the redevelopment of our London offices. Their combined architectural and interior design capability has been particularly useful in meeting our objectives.
We used RBD Architecture & Interiors to design and manage the extensive redevelopment of our period Mews house in London. They helped us each and every step of the way including obtaining all the relevant planning consents.