Steel BeamInstallers
Pocket cut into a brick party wall to take the end of a steel beam on a padstone

Party wall beam works · Cardiff

Party wall beam works in Cardiff

Party wall beam works across Cardiff, designed by a structural engineer and signed off by building control.

  • Survey, design and installation in one
  • Covering CF10, CF11, CF14, CF15
  • Inspected before it is covered

Free survey in Cardiff

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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

About our party wall beam works service in Cardiff

From the first survey visit to the completion certificate, we take care of party wall beam works across Cardiff. We cover the city and its surrounding districts. The engineer sizes the steel, we deal with Cardiff Council, and our team fits and packs the beam before making good.

What to expect

  • An adjoining owner can consent in writing, dissent, or serve a counter-notice asking for extra works to suit them. Silence after the response period is treated as a dissent, which simply means surveyors are appointed to agree how the work proceeds.
  • A party structure notice must be served at least two months before the work starts. That lead time is easy to overlook, so we build it into the programme from the first visit rather than discovering it when the steel is ready.
  • Surveyors' fees under the Act are normally the responsibility of whoever is having the work done. Costs rise with the number of adjoining owners, whether each appoints their own surveyor, and how much checking the beam design and method need.
  • A schedule of condition records the neighbour's side of the wall before work begins, usually with written notes and photographs of existing cracks and finishes. It gives both sides a fair reference point if anyone later claims the work caused damage.
  • Party walls in older terraces are often solid brick with lime mortar, and may carry both houses' chimney flues. The engineer checks the wall's condition and thickness where the beam will bear, and the bearing position may be adjusted to avoid flues still in use.

From survey to sign-off in Cardiff

  1. Free visit

    A short visit to Cardiff to see the job, agree what you want and check the bearings, floors and services that affect the design.

  2. Calculations

    The engineer's calculations and a simple drawing are prepared for your opening and shared with you before anything is ordered.

  3. Building control

    We submit the application or notice to Cardiff Council under the Building Regulations as they apply in Wales, before work starts.

  4. Steel in, made good

    On site we prop, open up, fit and pack the steel, then fire protect, box in and plaster once the inspection is done.

How much should I budget in Cardiff?

As a guide, budget £820–£1,820 per neighbour including VAT for party wall surveyor (agreed surveyor, per neighbour) in Cardiff, based on published UK cost guides adjusted for prices in Wales (-9%).

JobTypical guide rangeWhat it usually covers
Party wall surveyor (agreed surveyor, per neighbour)£820–£1,820 per neighbourSchedule of condition and award where a neighbour dissents; serving notice alone, where the neighbour consents, costs far less (England and Wales only)
Side return extension steelwork£3,200–£7,750Beams and posts along the old side wall line, propping and approvals (extension build extra)
Building control fees£230–£590Application fee and inspections under the Welsh building regulations; varies by council or approver
Structural calculations for a beam£230–£680Site measure or photos, beam and padstone design and calculations for building control

Figures include our approximate regional adjustment for prices in Wales (-9%) and are rounded. How these figures are worked out.

Approvals in Cardiff

Removing a load-bearing wall in Wales needs approval under the Welsh building regulations before work starts. For Cardiff the application goes to Cardiff Council or a registered building control approver, with the engineer's calculations, and a completion certificate follows the final inspection.

Where the steel bears into a wall shared with next door, notice must be served under the Party Wall etc. Act 1996. If your neighbour dissents, surveyors agree how the work is done before it starts.

Building rules in Wales

Party wall beam works in Cardiff: your questions

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

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.

What is a schedule of condition?

A schedule of condition is a written and photographic record of the neighbour's property, focused on the rooms next to the party wall, made before work starts. It notes existing cracks, stains and finishes. If damage is alleged later, the surveyors compare the property with the schedule to see what changed during the work.

Who pays for the party wall surveyor?

Normally the building owner, meaning the person having the work done, pays the reasonable fees of the surveyors for both sides, because the work is for their benefit. Fees vary with the number of neighbours affected and the complexity of the work, which is why they sit as a separate item in our quote.

What if work starts without serving a party wall notice?

The neighbour can seek a court injunction to stop the work until the proper procedure is followed, and starting without notice weakens the building owner's position if damage is later disputed. It can also cause problems when either property is sold. We do not start notifiable party wall work until the notice process is complete.

Can my neighbour stop me putting a beam in the party wall?

Generally no. The Party Wall etc. Act 1996 gives the building owner the right to carry out notifiable work, such as cutting in a beam bearing, provided the proper procedure is followed. A neighbour can dissent, which leads to surveyors setting conditions in an award, but this regulates the work rather than preventing it. Take legal advice on specific disputes.

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.