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Tell us what you have in mind and we will arrange a free, no-obligation visit, honest advice, and a clear fixed quote.
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Areas we cover
Hertfordshire
St Albans, Stevenage, Hitchin, Welwyn Garden City, Hertford, Hatfield, Letchworth, Harpenden
Bedfordshire
Bedford, Luton, Dunstable, Biggleswade, Leighton Buzzard, Ampthill
London
Barnet, Enfield, Finchley, Edgware, Potters Bar, North London
Good to know
Questions, answered
The things homeowners ask us most about extensions, planning and getting started.
Many single storey extensions fall under permitted development and do not need full planning permission, but it depends on the size, your property and your location. We assess this at the consultation stage and handle planning and building control on your behalf where it is needed.
Every extension is different, so we provide a clear, itemised fixed quote after understanding your project rather than a vague estimate. As a guide, single storey extensions typically start in the tens of thousands and rise with size, glazing and finish. We will always be honest about budget early on.
A single storey rear extension typically takes around 10 to 16 weeks on site once started, while double storey extensions and loft conversions can take longer. We give you a realistic programme before we begin and keep you updated throughout.
We work across Hertfordshire, Bedfordshire and London, including St Albans, Stevenage, Hitchin, Welwyn Garden City, Bedford, Luton, Barnet and the surrounding areas. If you are nearby, get in touch and we will let you know.
Yes. One accountable DNR team manages your build from the first consultation through design, planning, groundworks and finishing. You deal directly with the people doing the work, not a chain of subcontractors.
Matching brickwork, rooflines and details is something we take seriously. We source materials carefully so a new extension reads as part of the original home rather than an obvious add-on.