Open-plan kitchen knock-throughs in Portsmouth

When do open-plan kitchen knock-throughs make sense in Portsmouth?

Plenty of Portsmouth homes have a small back kitchen beside a dining room that only gets used at Christmas, and joining the two gives one room the household actually lives in.

If your Portsmouth semi has the kitchen at the back and a separate dining room beside it, opening the wall between them often makes space for an island or a proper table. We cover all of Portsmouth, including the PO5 postcode district, and travel out to neighbouring towns across Hampshire.

What is included in the work?

Every kitchen is different, so we confirm the scope in writing. Most jobs of this kind include:

New kitchen fitted once the opening is made good and the structural work inspected
Beam boxed in, the opening plastered and the floor joined where the wall stood
Cables, pipes and radiators in the wall rerouted by qualified trades
In England and Wales, party wall requirements checked where a beam bears into a shared wall
Structural engineer arranged to design the beam, padstones and temporary propping
Building Regulations approval arranged, or a building warrant before work starts in Scotland

What should you budget for open-plan kitchen knock-throughs in Portsmouth?

The figures below are guide prices for Portsmouth, including VAT and adjusted for typical costs across the South East. The fixed price comes after we have measured up. Labour in the South East generally costs more than the UK average, which lifts these ranges a little.

What should you budget for open-plan kitchen knock-throughs in Portsmouth?
Typical project	Guide price
Non-load-bearing wall removed and made goodStud or light partition, minimal services	£920–£2,300
Load-bearing wall with a steel beamStructural engineer's design and making good; building control or warrant fees listed separately	£3,400–£9,800
Knock-through with a new kitchen-dinerSteel beam, new kitchen, new floor throughout	£28,500–£63,000

Load-bearing guide ranges include the structural engineer's design for a typical single opening and making good; council building control or building warrant fees, rerouted services, decorating and the kitchen itself are listed separately. Prices include VAT at 20%.

Fitting kitchens in older and newer Portsmouth homes

The housing mix across Hampshire includes Victorian terraces, 1930s semis, post-war estate houses and thatched and brick cottages, so no two kitchen fits are quite alike. Terraces in Southampton and Portsmouth often have a narrow back kitchen, while post-war estate houses tend to have a compact rectangular room suited to an L-shape.

Dense terraced streets can be very tight for parking, and New Forest lanes and village roads may limit the size of delivery vehicle. Water across Hampshire is mostly hard, largely from chalk sources, so limescale on taps and boiling water taps is common and a filter can help.

What rules apply to open-plan kitchen knock-throughs in Portsmouth?

In England, removing a load-bearing wall needs a structural engineer's design and Building Regulations approval through local authority building control or a registered building control approver. Where a beam bears into a party wall, the Party Wall etc. Act 1996 means serving notice on the neighbours before work starts. If the new open-plan kitchen opens onto the hall and stairs, building control will check the escape route, and homes with a floor more than 4.5 metres above ground may need extra fire safety measures.

Homes within the New Forest or South Downs national parks, listed cottages and conservation areas may need consent for a new extractor vent or alterations to historic features.

Tips before you start

Choose the new floor finish before the wall comes out, so the strip where the wall stood can be levelled and covered in one go.
If your Portsmouth home is leasehold, ask the freeholder for written consent before any structural work is designed or booked in.
Before asking for prices for your Portsmouth home, look upstairs: a wall directly above the one you want removed is a strong sign it is load-bearing.
Check what runs through the wall: sockets, switches, radiator pipes, gas pipes and sometimes a soil stack all need rerouting first.

Questions about open-plan kitchen knock-throughs in Portsmouth

How much do open-plan kitchen knock-throughs cost in Portsmouth?

For removing a non-load-bearing wall and making good, budget around £920 to £2,300 including VAT in Portsmouth. That reflects typical costs in the South East; we confirm the actual figure in writing once we have measured up.

Can you measure up in Portsmouth before quoting?

Yes. Every quote starts with a free, no-obligation survey visit to your home in Portsmouth. We measure the room, check the walls, floor and service positions, then send an itemised written quote.

When is the new kitchen fitted after a knock-through?

After the opening is complete. The order is propping, removing the wall, setting the beam on its padstones, inspection, then boxing in, plastering and joining the floor where the wall stood. Fresh plaster usually needs three to six weeks to dry before full decorating, though a mist coat can go on sooner, so the units are often fitted while the walls dry and the decorating follows later.

Do I need approval to remove a wall between kitchen and dining room?

For a load-bearing wall, yes, everywhere in the UK. In England, Wales and Northern Ireland that means Building Regulations approval through building control; in Scotland a building warrant must be granted before work starts, followed by a completion certificate. A non-load-bearing partition is simpler, although a listed building may need listed building consent and a leasehold flat usually needs the freeholder's written consent.

Who designs the steel beam for a knock-through?

A structural engineer does. We arrange the engineer, who calculates the loads and specifies the beam size, the padstones it bears on and the temporary propping needed while the wall comes out. Those calculations go with the Building Regulations application or building warrant. We do not design steelwork ourselves; the work follows the engineer's design and is inspected as part of the approval.

Nearby places we cover

We also carry out open-plan kitchen knock-throughs in these towns near Portsmouth: