Steel BeamInstallers
Finished open-plan kitchen diner with a plastered boxed beam across the ceiling

Kitchen-diner knock-throughs · Derry City and Strabane

Kitchen-diner knock-throughs in Derry City and Strabane

Survey, engineer's design and installation of kitchen-diner knock-throughs anywhere in Derry City and Strabane.

  • Survey, design and installation in one
  • Covering BT47, BT48, BT81, BT82
  • Inspected before it is covered

Free survey in Derry City and Strabane

Tell us about your kitchen-diner knock-throughs project in Derry City and Strabane.

Please enter your name.
Please enter a UK phone number.
Please enter a valid email.
Please enter a UK postcode.
Please tell us a little about the job.
  • Free survey visit
  • Engineer's calculations arranged
  • Building control handled
  • Fixed written price once scope is agreed
  • England, Wales, mainland Scotland & NI

About our kitchen-diner knock-throughs service in Derry City and Strabane

Kitchen-diner knock-throughs remove the wall between a kitchen and a dining room to create one open-plan room, with a steel beam carrying whatever the wall supported. The work is planned around the kitchen itself: gas, water, waste and extraction runs, where units and any island will go, and how the ceiling should look once the steel is in.

Kitchen-diner knock-throughs are one of the most common structural jobs in homes across Derry City and Strabane. We work in Derry/Londonderry and Strabane and the surrounding villages. Every job starts with a survey visit, then calculations from a structural engineer, so the steel suits the house in front of us rather than a rule of thumb.

Key points for your project

  • A flush beam sits up within the depth of the ceiling so the kitchen and dining ceilings run as one flat surface. It suits continuous downlights and long runs of wall units, but each joist has to be connected into the beam, which adds labour.
  • Older kitchens can hide asbestos in textured ceiling coatings, floor tiles, boxing around pipes or the backing of old heaters. In buildings from before 2000 it must be identified before the fabric is disturbed, so a survey of the affected area is arranged first.
  • Keep the structural calculations, the building control completion certificate and any gas or electrical certificates together. When the house is sold, the buyer's solicitor will usually ask for evidence that the knock-through was approved and signed off.
  • The structural price depends mainly on the span, what sits above and how the beam ends are supported. Kitchen-related extras, such as moving gas, relocating a soil pipe or rerouting ducting, are listed as separate items so you can see what each one adds.
  • If the kitchen also opens onto the hallway, the change can affect the escape route from the bedrooms. Building control checks how people would get out in a fire, and smoke alarms, a fire door or other measures may be required as part of approval.

What happens, step by step

  1. Look and measure

    We check the wall, the span you want and what the wall is carrying, and photograph anything the engineer needs to see.

  2. Design and price

    Calculations come back from the engineer and we confirm your fixed written price, line by line.

  3. Building control

    A full plans application or building notice goes to Derry City and Strabane District Council under the Building Regulations (Northern Ireland) 2012 before work begins.

  4. Fit, inspect, finish

    The work is propped and the steel installed and packed tight. After inspection the opening is boxed, plastered and left clean.

How much should I budget in Derry City and Strabane?

As a guide, budget £2,150–£5,150 including VAT for kitchen-diner knock-through in Derry City and Strabane, based on published UK cost guides adjusted for prices in Northern Ireland (-14%).

JobTypical guide rangeWhat it usually covers
Kitchen-diner knock-through£2,150–£5,150Internal structural wall between kitchen and dining room, steel beam, approvals and making good (kitchen fitting extra)
Fire protection to a steel beam£130–£520 per beamFire-rated board boxing or an intumescent coating system as specified
Through-lounge knock-through£2,150–£4,750Wall between front and back reception rooms, steel beam, approvals, plastering and floor infill
Steel column or post£430–£1,290 per columnColumn supplied and fitted with base and cap plates on a pad foundation

Figures include our approximate regional adjustment for prices in Northern Ireland (-14%) and are rounded. How these figures are worked out.

Building rules for Derry City and Strabane

Building control in Derry City and Strabane is run by Derry City and Strabane District Council. Beams and new openings are controlled work under the Northern Ireland regulations, so we apply before anything is removed and the steel is inspected before it is covered.

The Party Wall etc. Act does not extend to Northern Ireland. Shared walls are dealt with under your title and the general law, so we recommend agreeing access and the work with your neighbour before it starts.

Building rules in Northern Ireland

Kitchen-diner knock-throughs by town

Kitchen-diner knock-throughs in Derry City and Strabane: your questions

Do you cover Derry City and Strabane for kitchen-diner knock-throughs?

Yes. We carry out kitchen-diner knock-throughs in Derry City and Strabane. Book a free survey visit and we will check the wall, arrange the engineer's calculations and send an itemised written quote.

Do I need a party wall agreement for kitchen-diner knock-throughs in Derry City and Strabane?

There is no Party Wall Act in Northern Ireland. Your title deeds and the general law apply instead, so agree the work with your neighbour in writing before it starts.

Who moves the gas pipe for my cooker?

A Gas Safe registered engineer, because work on gas pipework must legally be done by one. If the pipe runs in or near the wall being removed, it is capped or rerouted before demolition starts and reconnected once the new layout is in place. We build this into the programme so it is not left to chance.

What does a kitchen-diner knock-through quote include?

Our written quote is itemised: survey, engineer's calculations, building control, propping, removal of the wall, steel and padstones, fire protection, floor levelling and making good, with any gas, plumbing or electrical rerouting listed separately. Once the layout, specification and scope are agreed, the price is fixed in writing.

Is the wall between my kitchen and dining room load-bearing?

It often is, particularly in older semis and terraces where it supports the bedroom floor joists. The clearest signs are joists bearing on it from above and a wall in the same position upstairs, but only an engineer's site check confirms it. We arrange that check as part of the survey and design stage.

Do I need permission from my landlord or freeholder to open up a kitchen?

If you own a leasehold flat, usually yes. The lease will normally require the freeholder's or landlord's written consent for structural alterations, so get that before any work is booked. Freehold houses do not need this, and planning permission is not normally needed for internal changes unless the building is listed.

Which towns in Derry City and Strabane do you cover?

We cover towns including Derry/Londonderry and Strabane, plus the villages and smaller towns around them.

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.