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

Side return extension steels · Cricklewood

Side return extension steels in Cricklewood

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

  • Itemised written quote
  • Beam sized by a structural engineer
  • Covering Cricklewood and nearby

Free survey in Cricklewood

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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 Cricklewood

We cover side return extension steels in Cricklewood (NW2, NW3, NW4) and the streets around it. Our coverage runs across London, so nearby villages are included too. Each job is designed by a structural engineer and approved through local building control before work begins.

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.

Key points for your project

  • 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.
  • 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.
  • The side wall of a typical outrigger carries the first-floor wall above it, and sometimes the rear wing's roof and the joists of the room over the kitchen. That is why taking it out calls for a beam along its full length.
  • The number of beams, columns and connections drives steel cost more than the length of the side return alone. Keep the calculations, any party wall paperwork and the completion certificate together for when the house is sold.
  • Side returns often involve the Party Wall etc. Act 1996 in England and Wales, because the work sits right on the boundary. Building a new wall at the boundary, digging near a neighbour's foundations or cutting into a shared wall can each need notice.

From survey to sign-off in Cricklewood

  1. Free visit

    A short visit to Cricklewood 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 a building notice or full plans application to the local council's building control team, so approval is in place before the wall is touched.

  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.

What do side return extension steels cost in Cricklewood?

As a guide, budget £4,500–£10,900 including VAT for side return extension steelwork in Cricklewood, based on published UK cost guides adjusted for London prices (+28%).

JobTypical guide rangeWhat it usually covers
Side return extension steelwork£4,500–£10,900Beams and posts along the old side wall line, propping and approvals (extension build extra)
Structural calculations for a beam£320–£960Site measure or photos, beam and padstone design and calculations for building control
Steel column or post£640–£1,920 per columnColumn supplied and fitted with base and cap plates on a pad foundation
Fire protection to a steel beam£190–£770 per beamFire-rated board boxing or an intumescent coating system as specified

Figures include our approximate regional adjustment for London prices (+28%) and are rounded. How these figures are worked out.

Building rules for Cricklewood

For Cricklewood, building control is provided by the local council's building control team, or by a registered building control approver if preferred. We send them the engineer's calculations with a building notice or full plans application and book the inspections. Work done without approval can cause problems at sale and is far dearer to put right later.

If the beam bears into a wall you share with a neighbour, the Party Wall etc. Act 1996 applies, and a party structure notice must be served at least two months before that work starts. We arrange this through a party wall surveyor.

Building rules in England

Side return extension steels near Cricklewood

Local questions answered

How much do side return extension steels cost in Cricklewood?

As a guide, budget £4,500–£10,900 including VAT for side return extension steelwork in Cricklewood, based on published UK cost guides adjusted for London prices (+28%). The exact figure depends on the span, what the wall carries, access and the finish, and is fixed in writing once the scope is agreed.

What happens at the survey visit in Cricklewood?

We look at the wall, the floor and ceiling either side and what sits above, measure the opening you want, and note cables, pipes and access for the steel. It usually takes under an hour and there is no charge.

Can the steel beam be left exposed in a side return?

Yes, and many people like the look of exposed steel under a glazed roof. It usually still needs fire protection, so it is coated with an intumescent paint system to the specified thickness, then finished in your chosen colour. The engineer and building control confirm what protection is required.

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.

How long does it take to fit side return steels?

Most side return steel frames take two to five working days on site, depending on the number of beams and columns and how easy access is. That covers propping, removing the old side wall, fitting the steels and packing them. Fire protection and finishes follow afterwards.

Who approves side return extension steels in Cricklewood?

Structural work in Cricklewood needs a building notice or full plans application to the local council's building control team or a registered building control approver. 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.