At a house on Alston Close in Long Ditton, Surbiton, the brief brought together two opportunities: replacing the rear conservatory with a more useful dining space, and giving the integral garage a new role within the home. Our approved design connects these changes through a reorganised ground floor, with an open kitchen, a guest room or office, and dedicated spaces for laundry and outdoor belongings.
Elmbridge Borough Council granted planning permission on 10 July 2026, under application 2026/1011. The scheme includes a single-storey rear extension, garage conversion, alterations to windows and a sheltered side entrance.
A kitchen and dining space shaped around daily use
The rear extension replaces the conservatory, bringing the dining and seating area into a direct relationship with the kitchen. A wide opening between the two spaces makes it easier to cook, eat and spend time together, while the garden remains visible beyond the rear glazing.
The kitchen layout was developed around how the worktops would be used. The hob and sink sit on the main kitchen run, leaving the central island free for preparation and informal seating. This gives the island a clear purpose without placing cooking or washing-up in the middle of the room. The plan also allows circulation on either side, so the route to the dining area does not depend on passing through a single narrow gap.
Over the dining area, a roof lantern introduces light from above. Sliding rear doors and a generous side window bring views and daylight from different directions. The side window was enlarged during design development, giving the seating area another outlook as well as the view towards the garden.
Making the former garage work harder
Converting the garage creates more than one additional room. At the front is a guest room or office, with new windows replacing the garage door. This offers somewhere to work separately from the kitchen and dining area, with the flexibility to accommodate visitors.
Behind it, the layout divides the supporting space into a utility room and a boot room. Keeping laundry, storage and outdoor belongings in their own areas helps the main kitchen remain focused on cooking and social use. The boot room connects with the hallway, placing it close to the side entrance rather than at the far end of the house.
Connecting the new layout to the existing house
A flat entrance canopy with timber screening marks the side approach and provides shelter at the front door. Its modest scale complements the larger changes inside, while the new front windows give the converted garage the appearance of a room within the house.
The rear addition remains single storey and follows the depth of the conservatory it replaces. The permission requires external materials to match the existing building as closely as practicable, and keeps the flat roof from becoming a balcony or roof garden without further permission. These details help the scheme sit within its setting and protect neighbouring privacy.
This Surbiton project shows how an extension and garage conversion can be designed together to improve the whole ground floor. If you are considering a similar combination, book a call to discuss the spaces your home needs.
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