Steel BeamInstallers
Victorian through-lounge with a boxed beam where the dividing wall used to be

Through-lounge knock-throughs · Poole

Through-lounge knock-throughs in Poole

Through-lounge knock-throughs in Poole, from free survey to completion certificate.

  • Survey, design and installation in one
  • Covering BH12, BH13, BH14
  • Inspected before it is covered

Free survey in Poole

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  • Free survey visit
  • Engineer's calculations arranged
  • Building control handled
  • Fixed written price once scope is agreed
  • England, Wales, mainland Scotland & NI

Planning through-lounge knock-throughs in Poole

Need through-lounge knock-throughs in Poole? We also cover the surrounding towns and villages in Dorset. We survey the property, arrange the engineer's design, deal with local building control, fit the steel and make good, all under one quote for BH12, BH13, BH14, BH15 and BH17 addresses.

We plan the steel so the opening suits the room's proportions and keeps period features where you want them, from chimney breasts to cornicing. The survey visit, calculations from a qualified structural engineer, building control, party wall notices through a party wall surveyor where needed, propping, steel and making good are all set out in one itemised written quote.

Things to plan for

  • Cutting a pocket into a party wall for a beam end is notifiable work under the Party Wall etc. Act 1996 in England and Wales. Your neighbour can agree or dissent, and a dissent means party wall surveyors must set out how the work is done before it starts.
  • In most terraced houses the wall between the front and back rooms runs across the house and carries the floor above, plus the wall between the front and back bedrooms. It is normally load-bearing, but the engineer still checks before any design is drawn up.
  • Period ceilings are often lath and plaster, which can crack or sag when the wall below is disturbed. Props are set to spread load gently, and damaged areas are repaired with lime plaster or overboarded, depending on the condition and your preference.
  • Victorian brickwork is usually laid in soft lime mortar and the internal walls may be only one brick thick. The engineer allows for this when designing the bearings, and padstones are often used to spread the beam's load over the weaker masonry.
  • Ornate cornicing often runs around both rooms and stops at the wall being removed. Where practical, the run is extended across the opening by matching the profile, either run in place or cast, so the joined room looks original rather than patched.

From survey to sign-off in Poole

  1. Survey in Poole

    We visit, look at the wall and what sits above it, measure the opening and note services, access and how the steel can be brought in.

  2. Engineer's design

    A structural engineer sizes the beam, padstones and any posts, and sets out the temporary support needed while the wall is out.

  3. Building control

    We submit a building notice or full plans application to the local council's building control team, so approval is in place before the wall is touched.

  4. Install and sign-off

    Props go in, the opening is formed, the steel is set and packed, building control inspects it, and we make good.

What do through-lounge knock-throughs cost in Poole?

As a guide, budget £2,600–£5,650 including VAT for through-lounge knock-through in Poole, based on published UK cost guides adjusted for prices in the South West (+3%).

JobTypical guide rangeWhat it usually covers
Through-lounge knock-through£2,600–£5,650Wall between front and back reception rooms, steel beam, approvals, plastering and floor infill
Chimney breast removal (ground floor)£1,550–£3,100Ground-floor breast removed, steel to support the breast above, building control and making good
Kitchen-diner knock-through£2,600–£6,200Internal structural wall between kitchen and dining room, steel beam, approvals and making good (kitchen fitting extra)
Plastering and making good£310–£1,240Boxing the beam, bead and skim, reveals, floor infill where the wall stood and tidy-up

Figures include our approximate regional adjustment for prices in the South West (+3%) and are rounded. How these figures are worked out.

Building control and neighbours in Poole

In England, taking out a load-bearing wall or putting in a beam is building work under the Building Regulations 2010. It needs approval from building control, either the local council's building control team or a registered building control approver, through a full plans application or a building notice. Part A covers the structure and Part B covers fire safety, which is why steel in homes is usually fire protected.

If the beam bears into a wall you share with a neighbour, the Party Wall etc. Act 1996 applies, and a party structure notice must be served at least two months before that work starts. We arrange this through a party wall surveyor.

Building rules in England

Through-lounge knock-throughs near Poole

Local questions answered

Do you also work near Poole?

Yes. We also cover nearby towns including Bournemouth, Christchurch, New Milton and Weymouth.

Can I stay at home while the work is done in Poole?

Usually, yes. The work area is screened and floors are protected. The rooms either side of the opening are out of action for a few days, and there is some noise and dust while the masonry comes out.

How long does a through-lounge knock-through take?

The structural part usually takes three to five working days, covering needling, propping, removing the wall, fitting the steel and packing it. Party wall notice periods, plastering, period repairs and drying time sit around that, so the overall timeline depends mostly on notices and the finishing work.

Is the wall between two reception rooms load-bearing?

In most period terraces and semis it is, because it carries the floor joists and the wall between the bedrooms above. Some later houses have lighter partitions in this position, so the only way to be sure is an engineer's inspection. We arrange this during the survey and design stage.

Do I need consent to knock through in a listed building?

Yes, you need both listed building consent and building regulations approval. Listed building consent from the local planning authority covers internal structural changes to the building's fabric, and building control covers the structural safety. Carrying out works to a listed building without consent is an offence, so it must be in place before anything is booked.

How much do through-lounge knock-throughs cost in Poole?

As a guide, budget £2,600–£5,650 including VAT for through-lounge knock-through in Poole, based on published UK cost guides adjusted for prices in the South West (+3%). The exact figure depends on the span, what the wall carries, access and the finish, and is fixed in writing once the scope is agreed.

Planning to take a wall out?

Book a free survey visit. You get an itemised written quote covering calculations, building control, steel and making good.