Builders in Westerham
Westerham is a small Kent town in Sevenoaks District, six miles west of Sevenoaks on the borders with Surrey and Greater London, and Sevenoaks District Council handles its planning. Mighty Oak Construction works in Westerham on loft conversions, renovations, kitchen alterations, structural work and garden buildings, as well as the house extensions covered on their own page. Every project starts with a free site visit and an itemised written quote.
Working in a historic town
Westerham is recorded from the 9th century, and St Mary’s Church dates from about the 13th century, though it was much altered in Victorian times. The Westerham conservation area covers the historic centre around the Green, where the Churchill and Wolfe statues stand, and around 131 listed buildings lie within a couple of kilometres, including Grade I Quebec House and Squerryes Court.
Renovation in that setting means matching the existing fabric rather than replacing it: repairing walls in compatible materials, keeping original openings and checking whether listed building consent is needed even for internal changes.
Loft conversions in Westerham
Green Belt policy and the Kent Downs and Surrey Hills National Landscapes, which meet here, limit how far a house can grow outward. The loft is often the most acceptable place to add a bedroom. Rear dormers and rooflight conversions keep changes away from the street, while any work in the conservation area is checked with the council before drawings are made.
Kitchen repairs and alterations
Thames Water supplies the Westerham zone, and its 2025 results put total hardness between 288 and 311 mg/l, which is hard to very hard. That matters for a kitchen alteration: taps, appliances and any boiler work last longer with scale protection planned in. Opening a wall between kitchen and dining room is structural work, with a beam sized by an engineer and the building control process handled as part of the job.
Heating older and rural homes
Around the town centre, neighbourhood figures show 8% of homes heated by oil alone and 2% by tank or bottled gas. A renovation or loft conversion on one of those properties may need the heating rethought, with electric or a new system considered alongside extending the existing one.
Ground and the Darent
The River Darent runs through Westerham and once powered three watermills; Environment Agency flood zones follow its course. The town’s ground has history too: a hill here subsided in 1596 and became a dale. Neither fact says anything about an individual home, but both are reasons why foundations for any new structure follow a survey of the ground, trees and drains.
Larger homes, larger projects
Around the town centre, 38% of homes are detached and 36% have four or more bedrooms, and at district level 38.3% of households own outright. Those houses often suit combined projects: a loft and renovation together, or structural changes downstairs alongside a garden building.
Who you deal with
Elliot, the founder and a third-generation craftsman, is the single point of contact. Brickwork, carpentry, plastering and finishing are in-house, with trusted electrical, plumbing and structural specialists. The firm is fully insured.
Builders in Westerham: questions before commissioning
Is Westerham in Kent or Surrey?
Kent. Westerham is in Sevenoaks District and Sevenoaks District Council is the planning authority, although the TN16 postcode also covers Biggin Hill in Bromley.
Can I convert my loft in the Westerham conservation area?
Often, but changes visible from the street are checked with the council first, and listed buildings need consent. Rear dormers and rooflights are the usual approach.
Why does hard water matter for a kitchen alteration?
Westerham’s supply is hard to very hard, so scale protection for taps, appliances and hot water equipment is worth planning in from the start.
Do you build house extensions in Westerham?
Yes. Extensions have their own page; this page covers lofts, renovations, kitchen alterations and structural work.
Book a Westerham site visit
Talk through the house with Elliot on a free visit, then receive a detailed, itemised written quote.