Architect Durham

All in one Architectural Solution in Durham

Extension Architecture is an architectural design company that is based in Durham; we are focused on providing architectural solutions and designs to meet your construction needs with efficiency. Since 2002, our team has been involved in the design of both residential and combined commercial spaces in the area. Fortunately, due to our content knowledge of planning bylaws at the local level.

We are focused on delivering high-quality and unique residential projects, including home additions and conversions, new constructions, flats, and houses that are rented to multiple tenants, also referred to as HMOs. Planning a basement conversion? It is indeed an excellent way of creating space and increasing the value of the house. Regardless of whether you are extending your existing home or thinking of creating an entirely new one from the ground up, we can assist throughout the design and construction phases.

architectural solution in durham

We only deliver excellence

37⁺

Projects completed in Durham

1215 ⁺

Our total projects completed in London & Surrey

Districts in Durham

Aislaby, Allensford, Annfield Plain, Archdeacon Newton, Auckland Park Aukside, Aycliffe Village,

Our Expertise

Planning Application Drawings (including Plans, Sections, Elevations etc.)

3D Visualiations (Immersive Design)

Restrospective Planning

Building Regulation Drawings for Building Control

Consultancy for Commercial Development

Interior Design

Spatial Planning and Layout

Feasibiity Consultancy

Our Expertise

Planning Application Drawings (including Plans, Sections, Elevations etc.)

3D Visualiations (Immersive Design)

Restrospective Planning

Building Regulation Drawings for Building Control

Consultancy for Commercial Development

Interior Design

Spatial Planning and Layout

Feasibiity Consultancy

Find a Project Near You

Browse our projects by clicking on the map below.

Our Selected Case Studies in Durham

Single Storey Extension Case Study

Double Storey Extension Case Study

Loft Conversion Case Study

Leisure Pavilion for games room in Esher

New Build Case Study

View more Case Studies

Steph Fanizza, Architectural Design & Team Manager

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What makes Durham Special?

Durham is a local government district as well as a historic county in the North East of England and located along the North Sea coastline with a combination of picturesque landscape and cultural significance. Though the unitary authority and the historic county are not congruent, the boundaries of the latter span the northeast Tyne and Wear, as well as the North Sea; though close neighbours are Hartlepool, Stockton-on-Tees, and Darlington.

The area of the county is nowadays made up of such districts as Chester-le-Street, the city of Durham, Darlington, Hartlepool, and a part of the Borough of Stockton-on-Tees. Durham is a perfect mix of history, friendly people, and beautiful countryside. Durham is one of these cities that have a perfect combination of tradition and modernity, thanks to its charming cathedral, student life.

How we work in this area

Our Architectural services in Durham

Durham Planning Applications and Architectural Services

We are proud Durham architects and it is our job and pleasure to contribute to the development of various projects throughout the region. We have been involved in everything from home and kitchen extensions right through to full refurbishments of HMO’s for residents wanting to increase their available space and also enhance their living environment.

Your home is precious to you and your family thus we are ready to assist you from the conceptual stage to the actual construction, including a budget for the project.

Learn more about planning application of Durham and get a quote

Get a Free Quote today 0203 409 4215

Basement Conversion Durham

At Extension Architecture, our team of expert Durham architects is dedicated to transforming your vision into reality. Specialising in a range of projects—from house and basement extensions to loft and garage conversions—we guide you through every stage, from initial design concepts to planning, building control, and final realisation. A Durham basement conversion is a fantastic way to enhance your home’s space without expanding outward. It can provide a new bedroom, office, or even a home cinema, adding significant value and functionality. Often, these projects don’t require planning permission, unless you’re making major structural changes or altering the exterior.

We handle everything from meticulous site assessments to ensuring compliance with local regulations, especially considering conservation and heritage aspects. With a near 100% success rate, our team ensures that every project aligns perfectly with Durham county’s unique planning regulations and the historical context of your property. We stay updated on local planning changes and learn from neighbouring approvals and refusals, ensuring our approach is always informed and effective.

Learn more about planning application of Durham and get a quote

Get a Free Quote today 0203 409 4215

Why choose our architect services?

What makes us Unique?

Our experienced team of architects will take the lead and create a thoughtful design that maximises the available space and is tailored to your tastes. We will guide you through the intricacies of the planning process and discuss every aspect of the project in detail. We will be with you throughout the process, providing clear and comprehensive instructions while walking you through the planning, application and construction process.

Comprehensive Services Under One Roof

As a leading Durham architect we provide a full spectrum of services, from planning and architectural design to intricate interior work and immersive design, all while expertly managing the complexities of construction. Our multidisciplinary team of experienced professionals and skilled designers has successfully handled thousands of planning applications across the UK. We take pride in turning properties into dream homes, consistently delivering exceptional designs and ensuring complete client satisfaction.

In-House Structural Engineering Benefit

What sets us apart in a competitive market is our in-house structural engineer, a rare advantage held by only 1 in 20 firms. This unique asset allows us to avoid the delays and extra costs typically involved in working with multiple specialists. With a structural engineer on our team, we provide a fully integrated design-build process, reducing the risk of contingencies and design inaccuracies.

Expertise in Conservation Areas

With 16 years of experience working with Durham County Council, we’ve completed nearly 130 projects in 47 conservation areas of Durham, achieving a low refusal rate of just 2%.

Turnkey Solutions

We offer a ‘turnkey approach,’ guiding clients through the entire building process for a smooth, efficient project from start to finish. Additionally, we help lower build costs by managing the procurement of internal fit-outs, including sanitaryware, kitchens, and more.

Why choose our architect services?

We know your local area and the rule of planning permission of your borough

We’ve had more than 1600 successful planning applications approved since we started to help clients turn their dream home projects into a reality. We’re very proud of our success rate and how we can cater to all your planning needs. Take a look at some examples of the projects we were granted planning permission for in this case study..

We provides a comprehensive range of expert planning consultancy services.

Your personal planning consultant will visit your property, home or office at a time that suits you and discuss your project in further details. Later the technician will come and complete a full site survey. Our teams then discuss and agree what works and changes could be included in.

We’re the leading residential Architecture Studio in London

We at Extension Architecture provide a wide range of project, development and management services. Whether dealing with fast track refurbishment projects or large- scale mixed use developments, we work closely with all partners from the outset to lay the required processes and structures in place to ensure timely delivery.