Covering Sevenoaks
Our coverage around Sevenoaks (TN13) also includes Tonbridge (6 miles to the south-east) and Swanley.
Homes in the South East
Housing across the South East mixes inter-war semis, post-war estates and older cottages in villages and market towns, so rear and side extensions, hip-to-gable lofts and garage conversions all come up regularly.
What does an orangery involve?
We build orangeries on proper foundations with insulated walls and roof perimeter, so they can be used all year as a dining room, sitting room or kitchen extension. The lantern size and the frame finish are chosen to suit the age and style of the house.
- Design to suit the house style
- Planning or permitted development check
- Glazed roof lantern and windows or doors
What is the guide price for an orangery in Sevenoaks?
Use these ranges to budget for orangeries; the survey turns them into a fixed price for the agreed specification.
| Orangeries | Guide price incl. VAT |
|---|---|
| Standard specification | £3,000 to £3,500 per m² |
| Good specification | £3,500 to £4,100 per m² |
| High specification | £4,100 to £4,800 per m² |
Do you need permission for an orangery in Sevenoaks?
Projects in England go through two separate checks. Planning (or confirmation that the work is permitted development) comes from the district, borough or unitary council, and building regulations approval comes from the council’s building control team or a registered building control approver. Where work touches a shared wall or digs near a neighbour’s foundations, the Party Wall etc. Act 1996 applies.
In England a single-storey rear extension can often go ahead under permitted development: up to 3 m deep on an attached house or 4 m on a detached one, no higher than 4 m, with eaves no higher than 3 m within 2 m of a boundary. Deeper extensions, up to 6 m or 8 m, need prior approval from the council first.
What can affect an orangery?
- Solar-control glass in the lantern stops summer overheating.
- Heating should be part of the house system, not a plug-in heater.
From first call to completion
- Start with a conversation. A short call or the online form is enough for us to understand what you want to build.
- We visit and measure. A surveyor checks the house, the boundaries and the ground, and discusses what is realistic.
- Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
- Construction and completion. One site lead co-ordinates every trade through to the building control certificate.
Orangeries: common questions
How long does it take to build?
About 8 to 14 weeks on site.
Can it be used in winter?
Yes. It is insulated and heated like any other room.
Can you visit a house in Sevenoaks to quote?
Yes. After a short call we arrange a site visit to measure up and agree what the design needs to do, then send a written price.
Orangeries in nearby towns
Learn more about orangeries, or see every project we cover in Sevenoaks.

