Felix Lewis is a Kent-based architecture and interiors practice with studios in Maidstone, Tunbridge Wells, Reigate & Hawkhurst. Founded in 2014, specialising in extensions, alterations and new build educational spaces.
Felix Lewis Architects are particularly experienced in working with period buildings and buildings in sensitive locations. Our multi-disciplined team of architects, interior designers, planning experts, and conservation consultants work in partnership with our clients to get the best possible outcome for your project.
We are a team passionate about curating beautiful designs and spaces utilising many years of industry experience. Each client we serve is unique, and we approach their projects with the same care and dedication as if they were our own.
Projects may span months, or even years, and involve specialised members of our team required for planning and construction. Throughout this journey, you’ll have a project lead as your direct point of contact, ensuring seamless communication and guidance every step of the way.
We deliver timeless, innovative architecture and interiors with superb quality design and meticulous attention to detail.
The FLA Way
We are always happy to discuss your ideas and potential projects with you and can provide the full range of architectural services in line with the RIBA Plan of Work. To talk further about how we could work together, book a free consultant with us and we can explain the whole process in detail to you. The RIBA also produces a guide to Working with an Architect for your Home which is very helpful and will answer a lot of your questions. The health and safety executive also provides essential guidance that sets out your duties as a client under the CDM regulations.
Stage 0-1 Pre Design
RIBA Stage 0
We offer a free no obligation consultation — either by phone, video call or site visit— to define your project goals, needs, and feasibility, highlighting any risks or opportunities.
RIBA Stage 1
Once fees are agreed, we’ll arrange a building survey to allow us to fully understand the building. A formal appointment will be drawn up to instruct us as your Architect. We will present our initial design concepts, ranging from simple ideas to detailed feasibility studies to you, based on your project’s scope. Example imagery is provided to explain our thoughts with you to enable a cohesive design process. We’ll also recommend necessary consultants to join the design team, identify required approvals, and establish a project timeline and rough budget.
Stage 2 Concept Design
RIBA Stage 2
Going forward with the chosen concept from Stage 1, we’ll progress the design in more detail using 2D computer drawings and potentially 3D models, and AI visualisations, budget allowing. If needed, we’ll consult with local authorities with a Pre-Application regarding the proposed design. At this stage we will agree on materials and finishes of the external building, to clarify the look and feel. We’ll also assess buildability to ensure practical construction.This stage solidifies your vision into a clear, comprehensive proposal.
Stage 3 Developed Design
RIBA stage 3
At this stage, we’ll refine the design and prepare a comprehensive set of drawings and required documentation/reports to submit a planning application. The planning application process typically takes 8 weeks, depending on the council. During this time, we’ll respond to any questions they have and provide necessary documents, surveys or consultants. If anything is needed from you, we’ll let you know.
Stage 4 Technical Design
RIBA stage 4
With planning approved, we’ll prepare detailed drawings and specifications for tendering to trusted local builders, coordinating our drawings with other consultants. This allows accurate project pricing by a quantity surveyor. We’ll present the tender pack to you and assist in selecting the best contractor.
Stage 5 Construction
RIBA stage 5
Once a contractor is selected we will guide you through the necessary contract documentation, reviewing and agreeing the construction programme for the project. We’ll serve as contract administrator, overseeing site progress, handling inquiries, issuing instructions, and certifying payments. For larger projects, a Quantity Surveyor would be responsible for valuing the builders work. We would also appoint a project manager on larger projects.
Stage 6-7 Post-Completion
RIBA stage 6
At handover, we’ll issue completion certificates and prepare the final account. We will review and identify any snags and defects, instructing the contractor to carry out any remedial works required.We will assist in resolving and agreeing the final construction payment, ensuring a smooth project close.
RIBA stage 7
Monitoring the performance and operation of the building. We will assist and advise with any issues that arise during the post-construction phase, providing ongoing support for a set period of time.
Frequently Asked Questions
How do I begin a conversation with you about my project?
Simply arrange a time that suits you, and we can speak via Teams or over the phone to discuss your ideas. If you feel we’re the right fit and like our approach, we can visit your home at no cost to explore the project in more detail. Just click the link above to get started.
What types of projects do you work on?
We work on a range of residential and commercial projects, from contemporary extensions to full refurbishments and heritage restorations. Every design is tailored to suit your lifestyle, budget, and the unique character of your building.
Do you design interiors as well as architecture?
Yes — we provide a fully integrated service, ensuring your interior design and architecture work seamlessly together. From material palettes to bespoke joinery, we create spaces that feel cohesive and beautifully considered.
How much does a project cost?
Our projects typically range from £250,000 to £2,000,000, depending on scale and complexity. Some very large projects cost more, and some smaller, simpler ones cost less. We always tailor the design to suit your budget.
How do you keep to my budget?
We start by benchmarking against recent similar projects to provide an early budget guide. For more certainty, we can bring in a cost consultant (Quantity Surveyor) at any stage to forecast costs accurately. The closer we are to the final design, the more precise these figures become.
Can you help me visualise the design?
Absolutely. We use sketches, mood boards, and 3D visuals to help you clearly see the design before any work begins.
How long does a typical construction project take?
As a guide, a single-storey extension usually takes 4-7 months once on site, while larger projects — such as two-storey extensions or full refurbishments — can take 8–12 months. We’ll always provide a tailored timeline for your project.
Do you work on listed buildings or heritage projects?
Yes — we have experience working with listed and historic properties, blending modern comfort with a deep respect for the building’s character.
How much are your fees?
We charge on a stage-by-stage basis, so you’re never committed to the full process upfront. Each stage is agreed in advance and fixed before we start. If anything might affect the cost, we’ll let you know before proceeding. Fees typically range between 8% and 15% of the construction cost, with larger projects attracting a lower percentage.
Who else will be involved in my project?
Alongside the architect, you may need specialists such as a planning consultant, structural engineer, services engineer, or cost consultant. Once we understand your project in detail, we’ll advise on the right team and coordinate them for you.
What’s your approach to sustainability?
We design for longevity, using durable natural materials, energy-efficient solutions, and environmentally responsible choices that enhance comfort while reducing environmental impact.
Why should I choose you as my architect?
As a small and growing practice we pride ourselves in dedicating time on a project to create something unique for you and not a standard catalogue design. We combine creativity with technical expertise, guiding you through each stage with clarity, honesty, and a shared commitment to creating a space you’ll truly love to live in.