Read Christian's full reviewWe spoke to a number of companies about designing and building our loft extension, one of whom wanted to put a box on the back and another said the existing room configuration would make it too hard to do! Leigh and Sarah had great vision for what could be achieved and worked with the architect to…

Areas covered
Loft conversions, extensions and renovations in Guildford
Surrey Build Group designs and builds loft conversions, extensions and alterations for homeowners across Guildford, from the town centre out to Shalford, Ash and the Horsleys. Our office is in Shalford, and our in house architects, structural engineers and builders run every project from concept to completion, with your build cost locked in when you appoint us.
Local knowledge
Building in Guildford
Guildford's housing is as varied as its history. Below the castle and the cobbled High Street sit Victorian and Edwardian terraces in Charlotteville and Stoke, while Merrow and Burpham are full of 1930s and postwar semis with generous roof space. Several parts of the borough are conservation areas, from the town centre to villages such as Shere, and Guildford Cathedral on Stag Hill looks out over streets where careful design makes a real difference to planning outcomes.
Terraces here suit rear dormer lofts and side return extensions, while the semis of Merrow and Burpham are ideal for hip to gable lofts with an extension below. In the villages we often work on period cottages and larger detached homes, preparing planning drawings with local policy in mind and handling conservation area applications where they apply.
What we do
Our services in Guildford
Every service is designed, engineered and built by our own team for homes across Guildford.
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Loft conversions in Guildford
Velux, dormer, hip to gable and mansard lofts, plus bungalows expanded upwards, designed and engineered in house.
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Extensions in Guildford
Single and double storey, side return and wraparound extensions, with open plan kitchens built around steels.
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Design and build in Guildford
In house architects and structural engineers working with our own build team, under one contract.
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Structural alterations in Guildford
Knock throughs, steel beams, chimney breast removal and new openings, designed by our structural engineer.
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Garage conversions in Guildford
Integral and attached garage conversions into offices, bedrooms and family rooms, plus detached garage renovations.
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Project management in Guildford
A dedicated site crew, project manager and project coordinator running your build, with daily updates in your client portal.
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Under one roof
Why Guildford homeowners choose us
A streamlined, comprehensive service supporting you through the whole journey, from concept to completion. The people who design your home work beside the people who build it, so nothing gets lost between consultants and contractors.
Read Nigel's full reviewWe are delighted with our new loft space. From our enquiry right through to completion of the project, Leigh and the team have been responsive and supportive, delivering a light and bright bedroom and bathroom which has exceeded our expectations. Leigh's design vision coupled with site manager…
Read Emma's full reviewWe recently had a loft conversion and large extension completed by Surrey Build Group, and I honestly couldn’t recommend them more highly. From the very first visit, Leigh was incredibly knowledgeable. He took the time to clearly explain what was possible in terms of the build, as well as what…
Our work
Recent projects in Guildford
Open larger photoAshenden, Guildford GU2
Open larger photoAshenden, Guildford GU2
Open larger photoAshenden, Guildford GU2
Open larger photoThe Bakehouse, Shalford GU4
Open larger photoThe Bakehouse, Shalford GU4
Open larger photoThe Bakehouse, Shalford GU4
Questions
Building in Guildford: common questions
Do you cover Guildford and the surrounding area?
Yes. We work across Guildford, including Guildford (Borough centre), Ash, Ash Vale, Normandy, Pirbright, covering the GU1, GU2, GU3, GU4, GU5, GU12, GU23, GU24, KT24 postcodes, and we serve homeowners across all Surrey postcodes.
Do I need planning permission for a loft conversion or extension in Guildford?
Many loft conversions and single storey rear extensions fall under permitted development, but conservation areas, flats and larger projects need planning permission. Applications for Guildford homes are decided by the local planning authority, currently Guildford Borough Council, and we prepare and submit everything on your behalf.
How much does a loft conversion or extension cost in Guildford?
We price every project after a survey, because the size, structure and finish of each home is different. When you appoint us, your agreed build cost is locked in, protecting you from unexpected costs during the build.
Nearby areas we cover

Project Kick Start Meeting
Ready to talk about your project?
Book your Project Kick Start Meeting. We will talk through your plans, explain what is possible and follow up with a design and a fixed build price.
- In house architects and structural engineers
- Your build cost locked in when you appoint us
- A dedicated site crew, project manager and project co-ordinator
Prefer to talk? Call 0203 603 9777 or email hello@surreybuild.co.uk.
