Extension builders in Northampton
DWG Construction build house extensions and renovate homes across Northampton. We create space for family meals, room to relax together and layouts that make everyday life easier.
We personally manage your project, with our own specialist team carrying out the work. You have experienced people who have worked together for years, clear communication and costs agreed with you before work goes ahead.
20+ years of hands on construction experience · NIC certified · 12-month workmanship guarantee
Extensions, renovations and more across Northampton
A larger kitchen, an extra bedroom or a better ground-floor layout can make a lasting difference to how you enjoy your home. We carry out house extensions and renovations across Northampton, with our established team managing each build from start to finish.
House extensions
We build single or double storey extensions, side returns and wraparound extensions that add useful space and enhance your home.
Kitchen renovations
We plan your new kitchen around how you cook and spend time together, either on its own or as part of a wider extension.
Garage conversions
We turn an underused garage into a comfortable part of your home, with space for a home office, playroom or another room your household needs.
Loft conversions
We create an additional bedroom or office within your existing roof space, without extending the footprint of the house.
Design and build
We bring the design and construction of a full renovation or new home together in one coordinated project, managing the work through to completion.
Quality you can rely on
We take responsibility for the quality of your build, from the structural work through to the finishing details. Our established team works to the same standards throughout, with each project carefully managed and backed by our 12-month workmanship guarantee.
Clear pricing from the start
We talk you through the proposed work and its cost, then confirm the details by email for your sign-off. You have a written record of what has been agreed before the work begins.
If you ask for a change, or additional work is needed, we explain the costs, confirm the details by email and get your approval before that work goes ahead. You can make each decision knowing what it involves.
One point of contact from start to finish
We give you one experienced point of contact for your Northampton project, from our first conversation through to handover, so you always know who’s responsible and where things stand.
Recent projects
Recent work from across the area we cover. Northampton projects will be added here as they are photographed.
Nash/Holywel House, Buckinghamshire
An internal renovation with a new kitchen and underfloor heating.
The Limes, Stony Stratford
An internal renovation with bifold doors, a new kitchen, bathroom and utility room.
Garden Room, Brogborough
A large garden room with PVC sliding doors, thermal treated timber and air conditioning.
How it works
- Tell us about your project. Share your plans and any drawings you have. We will review your ideas, discuss what you want to achieve and explain the most useful next step.
- Design and agree the quotation. Once the design and scope are clear, we explain the work and costs. We confirm the details in writing for your approval before construction begins.
- Planning, build and handover. With the necessary permissions in place, we manage the build and keep you informed as it progresses. We coordinate the work through to the finishing details and snagging, following your project through to completion.
About DWG Construction
We serve homeowners across Northampton and the surrounding area. Our founder, David Watson-Green, has worked in construction since 2002 and established DWG in 2022.
Our own team brings together specialists chosen for their expertise and the quality of their work. We have worked together for years and share the same commitment to getting the details right. You benefit from an established team that works well together, with us taking responsibility for managing your project and overseeing the finished result.
Where we work in Northampton
We undertake extensions and renovation projects across Northampton and the surrounding villages, including Church Brampton, Spratton, Little Houghton and West Haddon.
Areas covered
- Northampton
- Church Brampton
- Spratton
- Little Houghton
- West Haddon
Questions about building in Northampton
If your question is not covered here, ask us directly.
Ask us directly 07928 100884Do I need planning permission for an extension in Northampton?
Some extensions fall within permitted development rights; others need planning permission. Your property, the design and any restrictions affect what is allowed. Check the requirements with your designer and West Northamptonshire Council before starting. Building regulations are a separate consideration.
How will you price my project?
We price the work around your plans and specification. We explain the costs and confirm the agreed details by email for your approval. Any later changes follow the same process before that work proceeds.
How long will the build take?
The timescale depends on the size and complexity of the work, with time also needed for design and approvals. We will discuss the likely programme with you and keep you updated as the build progresses.
Can we stay in the house while the work is carried out?
That depends on the work and whether safe access and essential facilities can be maintained. We will talk through what to expect when planning your project. Some projects allow you to stay; others may require temporary accommodation for part of the build.
Tell us about your Northampton project
Tell us about your plans for an extension, renovation or conversion. We will review your ideas and any drawings you have, and discuss the most useful next step for your home.