Kent · TN13
Garden Rooms & Offices in Sevenoaks
A garden room, or garden office, is a fully insulated, standalone structure built in the garden and fitted with electrics and heating for year-round use as a home office, gym, studio or additional living space, separate from the main house.
In Sevenoaks, that covers Riverhead, Dunton Green, Weald, Bat & Ball, Kippington. Sevenoaks is an affluent Kent town close to the Kent Downs National Landscape and extensive Green Belt land, with a historic core, well-established residential streets of substantial detached and semi-detached houses, and strong rail links into London.
Coverage
Areas we cover in Sevenoaks for garden rooms & offices
Property styles in Sevenoaks
Sevenoaks has a significant stock of larger detached and semi-detached Victorian, Edwardian and interwar houses on generous plots, which frequently suit substantial rear or double-storey extensions and outbuilding conversions.
Planning considerations
Sevenoaks District Council is the local planning authority. A large proportion of the district is designated Green Belt, and parts fall within the Kent Downs National Landscape, both of which place additional constraints on new structures and extensions beyond normal permitted development limits.
How it works
Our garden rooms & offices process
- 01
Site survey and design
Assessing the garden, ground conditions, access for construction and the size and layout that suits your intended use.
- 02
Planning check
Confirming whether the structure falls under permitted development for outbuildings, or needs a planning application.
- 03
Base and construction
Forming the base or foundation, then the insulated timber or SIPs structure, roofing, glazing and cladding.
- 04
Services and fit-out
Running electrics, heating and data cabling from the house, followed by internal lining, flooring and decoration.
Also in this area
Other services we provide in Sevenoaks
Nearby coverage
Garden Rooms & Offices in nearby areas
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FAQs
Garden Rooms & Offices in Sevenoaks: FAQs
Do you provide garden rooms & offices across all of Sevenoaks?
Yes, we cover the TN13 postcode area in full, including Riverhead, Dunton Green, Weald, Bat & Ball, Kippington.
Do I need planning permission for a garden room?
Most garden rooms fall under permitted development provided they are single-storey, set back from the boundary where required, and stay within height and garden-coverage limits. Larger structures, those closer to a boundary, or on designated land may need a full application, which we check for your specific garden.
Can a garden room be used all year round?
Yes, provided it is properly insulated in the walls, roof and floor and fitted with heating — this is what distinguishes a garden room from a summerhouse or garden shed, which are not designed for year-round comfort.
Does Green Belt designation affect extending a house in Sevenoaks?
Green Belt policy applies primarily to new buildings and significant additions that would be disproportionate to the original dwelling, rather than ruling out modest extensions. We assess this against your specific property and its planning history.
Get a quote for garden rooms & offices in Sevenoaks
Tell us about the property and what you have in mind, and we'll arrange a site visit.
Last reviewed 2026-07-28.