Steel BeamInstallers
Victorian side return extension with grey steel beams and roof rafters

Side return extension steels · Castlereagh

Side return extension steels in Castlereagh

Side return extension steels in Castlereagh, from free survey to completion certificate.

  • Survey, design and installation in one
  • Covering BT1, BT2, BT4
  • Inspected before it is covered

Free survey in Castlereagh

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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 side return extension steels in Castlereagh

Planning side return extension steels in Castlereagh? Our team covers BT1, BT2, BT4, BT5 and BT6 and the streets around them. We also cover the surrounding towns and villages in Belfast. You get one written quote for the calculations, approvals, propping, steel and making good.

Many Victorian and Edwardian terraces have a narrow back wing, often called an outrigger, with a strip of yard down one side. Infilling that strip turns a galley kitchen into a wide family room, but the outrigger's side wall usually holds up a bathroom or bedroom above, so it has to be replaced with steel.

What to expect

  • Glazed roofs over side returns are usually made to measure and need an edge that stays straight and level. The engineer may set a stiffer limit on how far the steel can deflect so the glazing is not stressed once loaded.
  • Side passages often carry the house drains and rainwater pipes from the outrigger roof. Manholes and pipe runs are located early, and a shared or public sewer under the passage may need the water company's agreement before building over or near it.
  • Victorian outrigger walls are often a single brick thick in soft lime mortar, sometimes on very shallow footings. The engineer may ask for trial holes before deciding whether new foundations are needed under the column positions or beam ends.
  • Some owners leave the long beam on show as a feature under a glazed roof. Exposed steel still needs fire protection where building control requires it, which usually means a specified intumescent paint system applied to the correct thickness.
  • The kitchen is usually out of use while the side wall comes down and the frame goes in, so many households set up a temporary kitchen elsewhere in the house. The rest of the property normally stays in use throughout the steel stage.

Four stages, one team

  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 Belfast City 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 Castlereagh?

As a guide, budget £3,000–£7,300 including VAT for side return extension steelwork in Castlereagh, based on published UK cost guides adjusted for prices in Northern Ireland (-14%).

JobTypical guide rangeWhat it usually covers
Side return extension steelwork£3,000–£7,300Beams and posts along the old side wall line, propping and approvals (extension build extra)
Steel column or post£430–£1,290 per columnColumn supplied and fitted with base and cap plates on a pad foundation
Structural calculations for a beam£220–£640Site 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.

Approvals in Castlereagh

Building control in Castlereagh is run by Belfast City 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

Side return extension steels near Castlereagh

Local questions answered

Do you cover Castlereagh for side return extension steels?

Yes. We carry out side return extension steels in Castlereagh and the BT1, BT2, BT4, BT5 and BT6 postcode districts. Book a free survey visit and we will check the wall, arrange the engineer's calculations and send an itemised written quote.

How soon can side return extension steels start in Castlereagh?

Start dates depend on the engineer's calculations, the building control approval and any agreement needed with neighbours. We give you a realistic timetable after the survey and keep you updated as each approval comes through.

Why does a side return need columns?

Columns are used where two beams meet or where there is not enough solid wall to carry the end of a beam. The column takes the concentrated load down to a pad foundation in the ground. Sometimes it can be hidden in a wall nib or boxed in neatly.

What steels do I need for a side return extension?

Usually a long beam along the line of the old outrigger side wall, often a second beam opening the back of the main house, and one or more columns where the loads meet. The exact arrangement depends on the house and the layout, and a structural engineer specifies every beam, column and connection.

Can the outrigger wall be removed without affecting the bathroom above?

Yes, when it is properly propped and replaced with steel designed for the load. The floor and wall above are supported throughout, and the bathroom stays usable in most cases. Waste pipes or soil stacks on the wall being removed are rerouted first so nothing is disturbed when it comes down.

Who approves side return extension steels in Castlereagh?

Structural work in Castlereagh needs a full plans application or building notice to Belfast City Council. We prepare and submit it with the structural engineer's calculations and arrange the inspections, so the completion paperwork follows the job.

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.