House Extensions in Guildford.
Guildford's housing changes a great deal within a short distance, and the right extension changes with it. Close to the town centre, Victorian terraces sit on narrow plots with a side return running alongside the rear addition, so the useful space is often only a couple of metres wide. Further out, in Merrow, Burpham and Onslow Village, the Edwardian and 1930s family houses have wider gardens and room for a full-width rear extension. On the edges of the town there are larger detached homes, where the Green Belt shapes what can be added. The first thing we look at is which of these houses you have.
Read our house extension cost guideRequest Your Free Cost Proposal
Tell us about your Guildford project. We reply within 24 hours to arrange a free site visit, then send an itemised Cost Proposal.
Our focus in Guildford.
The second question is whether the extra space belongs on the ground floor at all. Many Guildford families need a bigger kitchen and another bedroom, and those are two different projects. A rear extension gives the kitchen and living space; a loft conversion gives the bedroom and bathroom. Doing both in one programme can share scaffolding, skips, structural design and building control visits, and it means one period of disruption rather than two. We will tell you honestly whether combining them makes sense for your house, or whether one of the two is enough.
As a design-and-build company we take on a limited number of projects at a time, so that every one gets the attention it deserves. If you are planning work on your Guildford home, we would like to hear about it.
The Grand Standard
- 10% deposit, then weekly billing for completed work
- One team from design to completion
- Planning & building control managed for you
Planning authority
Guildford Borough Council
We handle applications, party wall agreements and building regulations on your behalf.
Local housing stock
Victorian terraces · Edwardian semis · 1930s detached homes · modern new-builds
Also serving nearby
What we deliver in Guildford.
- 01
Side-Return Extensions for Terraces
On a Victorian terrace, infilling the side return beside the rear addition turns a narrow galley kitchen into a room the full width of the house. The work usually involves a steel beam to open the existing flank wall, a glazed roof or rooflights to keep light reaching the middle of the plan, and party wall notices to the neighbour.
- 02
Full-Width Rear Extensions for Semis
The Edwardian and 1930s semis of Merrow and Burpham typically have a small kitchen beside a separate dining room. A full-width single-storey rear extension, with the wall between the two rooms taken out, creates one kitchen, dining and family space facing the garden, which is the brief we are given most often.
- 03
Extending and Converting the Loft Together
Where the family needs both a larger kitchen and another bedroom, we plan the rear extension and the loft conversion as one programme. The structural engineer designs both at once, trades are sequenced so the house is disturbed for one period only, and you deal with a single team throughout.
- 04
Planning in Guildford
Parts of Guildford, particularly around the historic town centre, fall within conservation areas, much of the surrounding countryside is Green Belt, and some of the borough lies within the Surrey Hills protected landscape. Any of these can affect what is permitted. We check the position for your address with Guildford Borough Council before design work begins.
Greenwich Rear Extension & Kitchen
The Challenge
Opening the rear of a 1930s semi into one room meant removing a load-bearing wall between the existing kitchen and the new extension, on a site where a narrow side passage was the only route for materials in and spoil out. The new ground-floor shower room also had to be formed within the existing rear lobby, well away from the original layout's plumbing.
Our Solution
The structural opening was formed with a steel beam cased into a shallow flush bulkhead that follows the line of the removed wall, keeping the ceiling clean and the sightline from kitchen to garden completely open. Deliveries were sequenced in small daily loads through the side passage to keep the neighbouring boundary clear, and services for the new shower room were routed within the extension's floor build-up so no boxing-in was needed in the finished rooms.
Your questions, answered.
Your Cost Proposal
Measured first, then itemised.
Every Guildford project begins with a free consultation and a fully itemised Cost Proposal. We take a 10% deposit three weeks before the start date, then bill weekly for completed, signed-off work.
Read our house extension cost guideTransform your Guildford home.
Tell us about your Guildford project and we'll arrange a free, no-obligation consultation, followed by a clear, itemised Cost Proposal, usually within 24 hours.
“The attention to detail and absolute financial transparency provided by Grand Innovations completely redefined our expectations of what a home renovation could be. High standard of work, the extension is beautiful and has added so much value onto our home. Really appreciated the weekly billing, rather than a big amount upfront.”