Residential Architects in Chelsea
Looking for Architects in Chelsea, London? Armstrong Simmonds Architects is an RIBA Chartered practice providing bespoke architectural and interior design services

Residential Architects IN Chelsea

Welcome to Armstrong Simmonds Architects

Based in South West London, we are an award winning architectural practice, priding ourselves on our creativity and passion to tailor and deliver bespoke architectural solutions for our clients.

We are a RIBA Chartered Architects practice founded in 2010. Our team has a high level of experience in the residential sector, working on a wide range of projects including high-end residential, new build apartments, house design, basements, extensions & loft conversions.

From our base in Battersea we take on projects within London and have good relationships with Chelsea‘s local planning authority, Kensington & Chelsea Council.

We will diligently guide you through each stage of the process from conceptual design / planning approval through to the completion of your dream project in Chelsea.



Latest Projects


Side & Rear Extension – Twickenham

The clients for this modern rear and side extension were looking to expand their three-bed house, creating a large open plan kitchen and living space while updating the facade of the existing house.

Apartment Battersea

A clean modern aesthetic, brought to life with flashes of colour and vibrant furniture, was the driving force behind this design. Polished concrete floors and exposed brickwork combined with timber and Carerra marble form the stripped back material palette of the new open plan space.

Extension & Refurbishment – Streatham

This semi-detached house in Streatham benefited from a sizeable distance from the boundary, allowing for a generously proportioned side infill extension with a dramatic up and over glazing feature.

Extension & Refurbishment – Wandsworth

This Victorian terraced house in Wandsworth has been completely refurbished and now includes a ground floor wrap around extension. The aim of this project was to bring a modern vibrant aesthetic to this family home.

Side Return Extension – Clapham

This side return extension features minimal glazing to create a strong visual connection with the garden while bringing natural light into the new kitchen/dining space.

Side Infill Extension – Balham

This contemporary side infill extension, in the heart of Balham, aims to bring as much natural light into the deep plan as possible. Floor to ceiling doors and an almost seamless glass roof make this achievable.

Loft Conversion – Clapham

This loft conversion adds a new master bedroom to a three-bedroom terraced house, using bespoke carpentry to make efficient use of the space available.




Briefing & Survey

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 in Chelsea and its surroundings, allowing us to produce an accurate set of drawings.

Planning Application & Scheme Design

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 Chelsea’s local planning authority, Kensington & Chelsea, as needed throughout the process. Our extensive experience will help facilitate a smooth planning process.

3D Modelling Services

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.

Building Control and Detailing

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 this service we can assist you in appointing other consultants, for example the structural engineer or party wall surveyor.

Interior Architecture and Schedules

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.

Interior Design
Furniture, Fittings & Equipment

We provide Interior design 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.

Prices and Builders

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.

On Site
Contract Administration

Armstrong Simmonds Architects facilitates the implementation of the design by administrating a contract between you and the contractor. Among a wide array of services, this will include undertaking site visits to monitor the quality of construction and handle any on-site queries from the contractor.

Why Chelsea’s Architecture Holds Our Affection

This section of the Royal Borough often embodies the essence of the Victorian era fortress. Chelsea boasts remarkable examples of Victorian and Georgian residences, creating a hub that has long attracted artists and British trendsetters.

Within Chelsea lie several notable architectural landmarks:

Royal Hospital Chelsea

Established in 1682 by King Charles II as a sanctuary for army veterans, this retirement and nursing home stands as one of Chelsea’s architectural treasures and is recognised as a Grade I listed heritage site. Crafted by Sir Christopher Wren, its architectural style blends Palladian, Renaissance, and Baroque elements. The layout, featuring gravel pathways, lawns, and sculptures, reflects English design. Originally meant for 412 veterans and officers around Figure Court during construction, it was later expanded by Wren to include Light Horse Court and College Court due to insufficient space, mirroring the appearance of Paris’s Les Invalides, commissioned by King Louis XIV in 1670.

The Tower House

Situated in Kensington and Chelsea’s Holland Park district, the Tower House is a late-Victorian private residence. Recognised as a Grade I listed building since 1949, it was created by architect William Burges between 1875 and 1881. Inspired by thirteenth-century French Gothic Revival domestic architecture, the house features red brick construction, Bath stone embellishments, Cumbria’s green roof slates, and a distinctive cylindrical tower with a conical roof.

Chelsea Bridge

Spanning the River Thames and connecting Chelsea to Battersea, Chelsea Bridge is a suspension bridge designed by architect Thomas Page. This Grade II listed heritage structure holds significance due to its rarity as a self-anchored suspension bridge. Originally named the Victoria Bridge, its narrow and structurally unsound design led to its renaming to Chelsea Bridge to avoid association with potential issues linked to the Royal Family. Demolished and replaced between 1934–37 due to increased traffic from population growth and the rise of automobiles, the current structure, unveiled in 1937, replaced the older bridge.