Loft Conversions

Kitchen Diner / Extensions

Garage Conversions

House Extensions

Barn Conversions

New Build Homes

New Build Flats

Retail Premises Design

Commercial Projects

Architectural Design Services 

Your vision starts here

We offer a full range of architectural design services to homeowners, builders, property developers and commercial clients, across the home counties.

KDR Architectural was established over 30 years ago with the mission to make good architectural design accessible to all.

We collaborate. We Inspire. We realise your project’s full potential.

Renovations and extensions

Conversions and extensions

If you love where you live, why move? Our aim is to transform your home with thoughtful design that suits your lifestyle and budget. Projects range from simply removing walls, rezoning and moving stairs through to single and double extensions, loft conversions and granny annexes. We listen and fully understand your vision, so we can create a design that is specific to you.

Residential new build design

Residential new build design

We specialise in new build house design for any lifestyle or life stage as well as large scale new build developments. With over 30 years’ experience, we design homes you love to live in. Our team works with individuals, builders and property developers, providing a comprehensive service from concept through to building approvals.

Commercial design

With a wide range of commercial clients, our work covers factories, industrial and retail units, and community projects such as village halls, schools and church extensions. We are responsive to client briefs and respectful of the historical, social and environmental development of the site.

Project Permissions

Project permissions

We know who to speak to and what legalities are involved to get your project off the ground. You can be assured that we continually monitor the district plans and keep up to date with the latest changes in local planning policy, so our team are best placed to advise you on what is required. We submit planning and building regulation applications on your behalf.

Start your project with KDR

The steps we take to make your project a success



Let’s chat

We provide a free phone or video consultation (up to 1 hour) to find out how we can help! Tell us everything! What is your vision? What is your style? What is your budget?


Project brief and feasibility

Our feasibility study fee of £95 +vat covers an on-site socially distanced visit to further discuss your ideas, review the environment and setting, and provide a sketch drawing.


Design development

We develop the sketch into a concept design taking into consideration functional practicalities, required works, potential planning requirements and provide cost estimates. From this, detailed working drawings are prepared.


Planning application

Some projects don’t need planning permission, but if you do, our full working drawings for planning and building control approval will be submitted to the applicable local authority department on your behalf.


The planning process usually takes around eight weeks and building control approval about four weeks. These two processes can run together, so you should receive full approval to start work within eight weeks from submitting the drawings.

Time to build!

With all planning stages complete, the working drawings can be sent to builders to get detailed quotes. We have a number of excellent builders that we can recommend for your project if required. 

See for yourself






Property developers





See our project locations

Enter your postcode to see our projects near you.

Google Reviews
  • 5 star review  very professional company which kept me up to date throughout the whole process of obtaining the planning permission, i would highly recommend this company and i will be using them again on my next project.

    thumb Graham Honour
    4 August 2021

    4 star review  We found Kevin very helpful with planning our first floor extension. Having listened carefully to our aspirations on room sizing and layout, amongst other requirements, he provided clear and straightforward solutions that were followed by the Building contractor. We are very happy with the end result. I would recommend them.

    thumb Neil Welch
    17 September 2020

    5 star review  Very happy with the service provided

    thumb Susan Lindsay
    14 August 2020
  • 5 star review  Very professional company to work with, nothing is too much to ask and designs drawn up were exactly to requirement. A very smooth process from beginning to end, which meant we were able to have our extension built within budget and to timescale.

    thumb Andrea Millers
    14 August 2020

    5 star review  Our needs for a lounge extension were recorded, questioned to make sure we understood one another, and then executed in a professional and timely manner. We only had one regret, that we hadn't got the work done years sooner.

    thumb Mo Hill
    14 September 2020

    5 star review  I contacted Kingswood to draw up plans for a kitchen, dining room and bathroom extension. Kevin always gets back to me pretty fast and has been very helpful along the way with any changes. He's been great.

    thumb Darryl Bolton
    17 April 2020

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Let’s get started!

Please call us on the numbers below or send us a message.

01582 476404 / 01280 812935 / Mobile 07973 227925