Removing a load-bearing wall is the single most common structural change made to a London house, and the one most often done in the wrong order. The construction is straightforward. The consents are not, and it is the consents, not the steelwork, that decide how long the job takes and whether it causes a problem when the house is sold.
What follows is the sequence for removing a load-bearing wall in London, in a house or maisonette that is neither listed nor leasehold. Those two cases carry extra layers, and they are covered at the end.
What you do not need
Planning permission, almost certainly. The Planning Portal states that you should not need to apply for planning permission for internal alterations, including building or removing an internal wall. Conservation area status does not change that: conservation area control is about what the building does to the street, and an unlisted house's interior is outside it. Our guide to conservation area renovations in London sets out where that line actually falls.
Two exceptions matter. If the building is listed, listed building consent is required for any significant works, internal or external, and interior fabric is explicitly within scope. See listed building interior alterations. And if the property is a leasehold flat, the lease almost certainly prohibits structural alteration without the freeholder's written consent, which is a licence to alter and takes its own timetable.
What you always need
1. A structural design
Start with a structural engineer, not a builder. The engineer establishes what the wall carries, which is rarely only the floor above: it may be a purlin, a section of roof, a chimney breast, or a wall on the floor above that is itself load-bearing. Then they size the beam and, just as importantly, the bearings at each end, the padstones or piers that transfer the new concentrated load down through the structure to the foundations.
That last point is where amateur jobs fail. A correctly sized steel sitting on a half-brick pier is not a solution, it is a slower failure. In a Victorian London terrace with shallow foundations and lime mortar, the bearing detail is the design.
2. Building regulations approval
Removing a load-bearing wall is notifiable work under the Building Regulations. There are two routes. A full plans application submits the drawings and calculations for approval before work starts, which is slower up front and gives you a decision in writing. A building notice lets work start sooner but leaves you carrying the risk that an inspector requires changes on site. For structural work, full plans is the safer route, and most engineers will recommend it.
Building control then inspects at the critical stages, typically once the opening is formed and the beam is in but before it is cased in, and again at completion. The output is a completion certificate, and that certificate is the document that matters years later.
3. Fire and sound, which people forget
A wall does more than hold things up. If the wall you are removing separates the stair from a room, you may be removing part of the protected escape route, and building control will require the fire strategy to be re-made, usually with interlinked alarms and, sometimes, doors you had not planned on. The steel itself normally needs fire protection, commonly two layers of plasterboard, which affects the finished ceiling line. Factor that in before you agree a beam depth with your designer.
The party wall question
In a terrace or a semi, the beam usually bears into the party wall. That is notifiable work: section 2 of the Party Wall etc. Act 1996 covers cutting into a party structure, and section 3 requires you to serve a party structure notice on the adjoining owner stating the nature of the work and the date it will begin.
The number to plan around is in section 3(2)(a): the notice must be served at least two months before the date the work will begin. A notice also lapses if the work has not begun within twelve months of it being served. Neighbours may consent in writing, which removes the delay, and they may dissent, in which case surveyors are appointed and an award is drawn up.
Serve early and serve properly. The two months is the longest fixed period in the whole project, and it is the one most often discovered a fortnight before the builder is booked. Our guide to the Party Wall Act for London renovations covers notices, awards and surveyor costs in detail.
The order that works
- Structural engineer's visit and design, with the beam and the bearing details specified.
- Serve the party wall notice the moment the design is fixed, so the two months runs while everything else happens.
- Submit the building regulations application, full plans for preference.
- Get the freeholder's licence to alter if the property is leasehold, or listed building consent if it is listed. Both can be slower than everything above.
- Book the builder for a date after the notice period expires, not before.
- Book the building control inspections at the stages the officer specifies, and do not case the steel in until it has been seen.
- Get the completion certificate and file it with the deeds.
What it does to the room, which is the actual point
Structurally the wall can go. Whether it should is a design question, and it is worth asking before the props go up. An open-plan ground floor gains light and sightlines and loses acoustic separation, heat zoning and, frequently, the wall you needed for a sofa. The downstand, the depth of the boxed-in beam below the ceiling, is the detail that decides whether the finished room reads as one space or two: a flush beam kept within the floor zone costs more and looks seamless, a 300mm downstand does not.
Think about what replaces the wall's functions. Zoning by ceiling treatment, flooring change or lighting circuit does more for a large open room than furniture does. We work through that in designing an open-plan kitchen diner and designing a living room.
If it was done before you owned the house
This surfaces at sale. Your buyer's conveyancer asks for the building regulations completion certificate for any structural alteration, and if there is not one the transaction stalls. Two routes exist. A regularisation application asks the local authority to approve the work retrospectively, which means opening up sections for inspection and possibly remedial work. Indemnity insurance is faster and cheaper, but it insures against enforcement action rather than against the beam being wrong, and a surveyor acting for a careful buyer will say so.
For the wider renovation picture, see our guides on period property interiors, how long a project takes and what an interior designer costs in London, or start from the Vertigo Interiors homepage.
Frequently Asked Questions
Do I need planning permission to remove a load-bearing wall?
Usually not. The Planning Portal is explicit that you should not need to apply for planning permission for internal alterations, including building or removing an internal wall. The exception is a listed building, where listed building consent is required for any significant works, internal or external.
Do I need building regulations approval?
Yes, always. Removing a load-bearing wall is notifiable work. You either submit a full plans application, with the structural design and calculations, or serve a building notice, and building control inspects the work in progress and at completion. There is no version of this job that is exempt.
Do I need a structural engineer?
In practice, yes. Building control needs a design that shows how the load is carried once the wall has gone, which means a beam sized by calculation, along with the padstones or piers that take the bearing at each end. A builder's assurance that a particular steel will do is not a submission.
Does the Party Wall Act apply?
It applies if the beam bears into a party wall, which is the normal arrangement in a London terrace or semi. Cutting into a party structure is notifiable work under section 2 of the Party Wall etc. Act 1996, and section 3 requires the party structure notice to be served at least two months before work begins.
How long does the whole process take?
The consents, not the construction, set the timetable. Allow two to four weeks for a structural engineer's survey and calculations, and two months for the party wall notice period if one is needed, which can run alongside. The physical work on a single opening is usually a matter of days once props are in.
What happens if a previous owner did it without approval?
Your conveyancer will ask for the completion certificate at sale, and its absence stalls things. The routes are a regularisation application to the local authority, which involves opening up work for inspection, or indemnity insurance, which covers the risk of enforcement but does not confirm the work is safe.
Can I remove a load-bearing wall in a leasehold flat?
Only with the freeholder's written consent, usually a licence to alter, and most leases prohibit structural alterations without it. Doing it without consent is a breach of covenant, and it will be found at sale. This is separate from and additional to building control approval.
Sources
- Planning Portal, internal walls: planningportal.co.uk
- Party Wall etc. Act 1996, sections 2 and 3: legislation.gov.uk
- Ministry of Housing, Communities and Local Government, preventing and resolving disputes in relation to party walls: gov.uk
Checked on 22 August 2026. Building control procedures vary between local authorities and approved inspectors; confirm the route with yours before starting work.