Kitchen-diner knock-throughs · Lisburn and Castlereagh
Kitchen-diner knock-throughs in Lisburn and Castlereagh
Calculations, approvals, propping, steel and making good for kitchen-diner knock-throughs across Lisburn and Castlereagh.
- Price fixed in writing once scope is agreed
- Building control arranged
- Temporary works and making good included
- Free survey visit
- Engineer's calculations arranged
- Building control handled
- Fixed written price once scope is agreed
- England, Wales, mainland Scotland & NI
What kitchen-diner knock-throughs involve in Lisburn and Castlereagh
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.
If you are planning kitchen-diner knock-throughs in Lisburn and Castlereagh, the order of work matters as much as the steel: survey, calculations, approval, propping, installation, inspection and making good. That includes Lisburn, plus smaller towns and villages nearby. We run that sequence for you as one job with one point of contact.
Things to plan for
- Settle the kitchen layout before the steel is designed. If the engineer needs a column or a deeper beam, it is far easier to plan an island, tall units or the hob position around it at drawing stage than after the units are ordered.
- Sinks and dishwashers usually sit on an outside wall, but supply pipes and waste runs sometimes cross the internal wall. Moving the sink to an island means planning a waste route with enough fall under the floor, which affects how the floor is prepared.
- 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.
- While the wall is out you will usually be without a working kitchen for several days. Many households set up a kettle, microwave and fridge in another room for that period and plan simple meals that need little cooking.
- 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.
What happens, step by step
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.
Design and price
Calculations come back from the engineer and we confirm your fixed written price, line by line.
Building control
A full plans application or building notice goes to Lisburn and Castlereagh City Council under the Building Regulations (Northern Ireland) 2012 before work begins.
Fit, inspect, finish
The work is propped and the steel installed and packed tight. After inspection the opening is boxed, plastered and left clean.
Guide prices for kitchen-diner knock-throughs in Lisburn and Castlereagh
As a guide, budget £2,150–£5,150 including VAT for kitchen-diner knock-through in Lisburn and Castlereagh, based on published UK cost guides adjusted for prices in Northern Ireland (-14%).
| Job | Typical guide range | What it usually covers |
|---|---|---|
| Kitchen-diner knock-through | £2,150–£5,150 | Internal 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 beam | Fire-rated board boxing or an intumescent coating system as specified |
| Plastering and making good | £260–£1,030 | Boxing the beam, bead and skim, reveals, floor infill where the wall stood and tidy-up |
| Structural calculations for a beam | £220–£640 | Site measure or photos, beam and padstone design and calculations for building control |
Figures include our approximate regional adjustment for prices in Northern Ireland (-14%) and are rounded. How these figures are worked out.
Building rules for Lisburn and Castlereagh
Removing a load-bearing wall in Northern Ireland needs building control approval from the council. Lisburn and Castlereagh City Council covers Lisburn and Castlereagh. The engineer's calculations support the application, and a completion certificate is issued after the final inspection.
Northern Ireland has no Party Wall Act, so there is no statutory notice to serve. Where the steel bears into a shared wall, the title deeds and the general law apply, and agreeing the work with your neighbour in writing first is good practice.
Kitchen-diner knock-throughs by town
Questions about kitchen-diner knock-throughs in Lisburn and Castlereagh
Which towns in Lisburn and Castlereagh do you cover?
We cover towns including Lisburn, plus the villages and smaller towns around them.
Can I stay at home while the work is done in Lisburn and Castlereagh?
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.
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.
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.
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.
Can the steel beam be hidden in the ceiling?
Yes, a flush beam can be set into the ceiling void so there is no step between the kitchen and dining ceilings. It needs enough joist depth and more labour to connect the joists to the steel, so it costs more than a downstand. The engineer confirms whether it is possible in your house.
Do you cover Lisburn and Castlereagh for kitchen-diner knock-throughs?
Yes. We carry out kitchen-diner knock-throughs in Lisburn and Castlereagh. Book a free survey visit and we will check the wall, arrange the engineer's calculations and send an itemised written quote.