Rear extension steels · York
Rear extension steels in York
Rear extension steels in York, from free survey to completion certificate.
- Itemised written quote
- Beam sized by a structural engineer
- Covering York and nearby
- Free survey visit
- Engineer's calculations arranged
- Building control handled
- Fixed written price once scope is agreed
- England, Wales, mainland Scotland & NI
What rear extension steels involve in York
Our rear extension steels service in York covers everything from the first visit to the completion paperwork. We also cover the surrounding towns and villages in North Yorkshire. Postcode districts we cover here include YO1, YO10, YO23, YO24 and YO30.
We work alongside your builder or as the steel package within the wider build. We arrange the engineer's design, coordinate building control, prop and open the rear wall at the right stage of the programme, and fit and pack the steels so the extension can be finished around them.
Things to plan for
- Two-storey rear extensions add a second level of loads to think about. Steels at first-floor level may carry the existing rear wall of the bedrooms or tie the new roof into the old one, so the engineer looks at both floors together.
- The building control completion certificate for the extension covers the steelwork to the old rear wall. Keep it with the engineer's calculations and drawings, as a buyer's solicitor will expect to see the structural paperwork for the extension.
- A single beam works where solid masonry is left at both ends of the opening. Where the opening runs nearly the full width or the corners are weak, the engineer may use columns or a goalpost frame, which is two posts and a beam bolted together.
- During the opening, props stand both inside the house and within the extension footprint. Where props bear on a newly laid slab, the propping plan checks that the slab can take those point loads, using spreaders where needed.
- The steelwork forms part of the extension's building regulations approval, and the engineer's calculations go in with it. Planning for the extension itself is separate; many rear extensions to houses in England fall within permitted development, subject to size limits and conditions.
How the job runs in York
Survey in York
We visit, look at the wall and what sits above it, measure the opening and note services, access and how the steel can be brought in.
Engineer's design
A structural engineer sizes the beam, padstones and any posts, and sets out the temporary support needed while the wall is out.
Building control
We submit a building notice or full plans application to City of York Council, so approval is in place before the wall is touched.
Install and sign-off
Props go in, the opening is formed, the steel is set and packed, building control inspects it, and we make good.
How much should I budget in York?
As a guide, budget £2,400–£6,650 including VAT for opening into a rear extension in York, based on published UK cost guides adjusted for prices in Yorkshire and the Humber (-5%).
| Job | Typical guide range | What it usually covers |
|---|---|---|
| Opening into a rear extension | £2,400–£6,650 | Original rear wall removed with a beam or goalpost, approvals and propping, coordinated with the extension build |
| Steel goalpost frame | £1,900–£5,700 | Two posts and a beam bolted as a frame, pad foundations, base plates and fitting |
| Side return extension steelwork | £3,300–£8,100 | Beams and posts along the old side wall line, propping and approvals (extension build extra) |
| Steel column or post | £480–£1,420 per column | Column supplied and fitted with base and cap plates on a pad foundation |
Figures include our approximate regional adjustment for prices in Yorkshire and the Humber (-5%) and are rounded. How these figures are worked out.
Building control and neighbours in York
Structural openings in English homes need building regulations approval before work starts. City of York Council can deal with it, or you can use a registered building control approver. Either way the steel is inspected before it is covered, and a completion certificate is issued at the end. Keep it safe for when you sell.
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.
Rear extension steels near York
- Selby 12.1 mi
- Harrogate 18.6 mi
- Goole 19.5 mi
- Castleford 19.7 mi
- Pontefract 20.7 mi
- Leeds 22.0 mi
Rear extension steels in York: your questions
Can you work on older or listed homes in York?
Yes. Older homes often have lime mortar, timber lintels or shallow footings, which the engineer allows for. Listed buildings need listed building consent for internal structural changes as well as building regulations approval, and that must be in place first.
Do you cover York for rear extension steels?
Yes. We carry out rear extension steels in York and the YO1, YO10, YO23, YO24 and YO30 postcode districts. Book a free survey visit and we will check the wall, arrange the engineer's calculations and send an itemised written quote.
Will my kitchen be out of action while the rear wall is opened?
For a few days, usually. The kitchen often sits against the rear wall, so units, sinks or appliances near the opening may need disconnecting while the wall is propped and removed. The work area is sheeted off and the rest of the house stays in use.
When does the back wall come out during an extension build?
Usually once the extension walls and roof are up and the new space is weathertight. That keeps the house secure and dry while the opening is formed. The steel goes in, building control inspects it, and the builder then carries the floors and ceilings through.
What is a goalpost frame in an extension?
A goalpost frame is two steel columns with a beam across the top, bolted together and standing on their own foundations. It is used where the opening is so wide that little masonry is left to bear on, or where the existing corners cannot take the load. The engineer decides whether one is needed.
How much do rear extension steels cost in York?
As a guide, budget £2,400–£6,650 including VAT for opening into a rear extension in York, based on published UK cost guides adjusted for prices in Yorkshire and the Humber (-5%). 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.