Surrey · RH6
Structural Alterations in Horley
A structural alteration, or knock-through, removes or alters a load-bearing wall — typically to join a kitchen and dining room — and requires structural calculations from an engineer, a supporting steel beam sized to the load, and Building Regulations approval before and after the work.
In Horley, that covers Massetts, Lonsdale, Smallfield, Horley Row, Westvale Park. Horley sits close to Gatwick Airport, with a historic village core and substantial 20th-century residential development around it, making it a popular area for family homeowners looking to extend rather than move.
Coverage
Areas we cover in Horley for structural alterations
Property styles in Horley
The older village centre includes period cottages and Victorian houses, while the wider town has significant interwar and postwar estate housing well suited to standard rear extensions and loft conversions.
Planning considerations
Reigate & Banstead Borough Council is the local planning authority. Properties close to Gatwick Airport may be subject to airport safeguarding consultation requirements for certain types of development, which we check where relevant.
How it works
Our structural alterations process
- 01
Structural survey
Assessing the wall, what it supports, and the loads involved, ahead of instructing an engineer.
- 02
Engineer's calculations
A structural engineer sizes the steel or other structural solution and produces calculations for Building Control.
- 03
Building Regulations and party wall
Submitting a Building Regulations application and serving party wall notice if the work affects a shared wall.
- 04
Construction
Temporary propping, forming the opening, installing the steel and making good, with a Building Control inspection before the work is covered up.
Also in this area
Other services we provide in Horley
Nearby coverage
Structural Alterations in nearby areas
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FAQs
Structural Alterations in Horley: FAQs
Do you provide structural alterations across all of Horley?
Yes, we cover the RH6 postcode area in full, including Massetts, Lonsdale, Smallfield, Horley Row, Westvale Park.
Do I need planning permission to remove an internal wall?
Usually no — removing an internal load-bearing wall is normally a Building Regulations matter rather than a planning one, provided the property isn't listed and the work doesn't affect the external appearance. We confirm the position for your property at survey.
How do I know if a wall is load-bearing?
Load-bearing walls typically run perpendicular to floor or roof joists, sit above a wall or support on the floor below, or align with the roof structure — but this isn't reliable to judge by eye, so we assess it on-site and confirm with a structural engineer before any work starts.
Does living near Gatwick Airport affect planning permission in Horley?
Some development types near the airport are subject to safeguarding consultation with the airport operator as part of the planning process. This does not apply to all projects, and we advise on the specific position for your address.
Get a quote for structural alterations in Horley
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Last reviewed 2026-07-28.