Structural Alterations Ealing
Structural alterations, new openings, underpinning and floor structures in Ealing, designed by the engineer we appoint and inspected at every stage.
- Rated 4.9 from 31 reviews on MyBuilder
- London guide: from £1,500
- Free site survey, itemised quote
GS Renovation carries out structural alterations across Ealing, from new openings in Acton's Victorian terraces to replacement joists and underpinning under 1930s semis near Ealing Common. We build supported openings to the engineer's design, renew failed timbers and stabilise foundations to current Building Regulations.
In Ealing, a simple new opening starts from £1,500, and underpinning a single elevation typically costs £6,000 to £21,000 (indicative London ranges, MyBuilder and Checkatrade, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Ealing.
Price guide
| Work | Indicative London range |
|---|---|
| Simple new opening | from £1,500 |
| Underpinning, single elevation | £6,000 to £21,000 |
| Major structural works | from £15,000 |
Indicative London ranges (MyBuilder and Checkatrade, 2026), not a quotation. Prices checked September 2026. Full breakdown: RSJ & Load-Bearing Walls.
How the job runs
- Free site survey at your Ealing address and an itemised quote.
- The engineer we appoint designs the work, and it is registered with Ealing Council building control or an approved inspector. On a shared wall you serve the party wall notice as building owner; we supply the drawings.
- Props and any trial holes first, then the opening, joists or underpinning in the engineer's sequence.
- Building control inspects each stage before it is covered, then issues the completion certificate.
Supported openings in Ealing period homes
Whether you are forming a wide opening into a side-return extension or knocking a doorway through a solid W13 dividing wall, the principle is the same: the masonry above must be caught and carried. The engineer we appoint sizes the lintel or steel for the span and the load coming down onto it, and specifies padstones so the beam bears onto sound brickwork rather than crushing the wall beneath. Nothing is left to guesswork.
Ealing's older terraces frequently reveal tired structure once opened up: sagging floor joists eaten by rot near the closet wing, or lintels that have shifted over a century. We replace joists like-for-like or upsized, renew defective lintels and pin masonry as needed. Temporary propping supports the structure throughout, and the load is transferred onto the new steel or timber only when everything is set and bearing correctly.
Housing in Ealing
By the valuation list's count, Ealing holds about 149,900 homes, 46% houses and 54% flats; by age, 28% were built before 1919, 30% between the wars and 42% since 1945. Since most homes here are flats, structural repair to a block in Ealing usually falls to the freeholder.
Underpinning an older Ealing wall that sits near a public sewer
Underpinning in Ealing is counted in runs, and the counting is worth understanding before a scheme is drawn. Ealing's domestic building control charges price underpinning for every 5m run or part, with a discounted rate for each run after the first. A settled corner that needs a little over 5m of new foundation is therefore two runs, not one. In Ealing 28% of homes were built before 1919, and footings of that age can be shallow stepped brick rather than concrete, so the engineer may lengthen the run once the first pit is open. Allow for that possibility in the application.
The second check is the drain. In Ealing a building notice cannot be used for underpinning over or within 3.0m of a public sewer shown on the Thames Water Authority map of sewers. The back wall of an older house, where settlement can show, may be close to a shared run heading for that sewer. Get the sewer records and a camera survey of the drains before the engineer finalises the pits. A sewer inside that distance means a full plan application, and its exact line has to be confirmed before any digging starts.
Underpinning and consents in Ealing
The clay subsoils under much of Ealing move with the seasons, and mature street trees near Walpole Park and along the older Hanwell roads can draw moisture and cause subsidence. Where foundations have dropped, we underpin in carefully sequenced bays, excavating and casting new concrete beneath the existing footings in a hit-and-miss pattern so the wall is never left unsupported. The engineer designs the depth and mix to suit the ground.
Structural alterations of this kind are notifiable under the Building Regulations, and Ealing Council building control inspects the works as they proceed. Underpinning and new openings on a party wall also fall under the Party Wall Act, so you serve notice on the adjoining owner before starting (or your surveyor does); we give you the drawings and programme it needs and build to any award. We coordinate the engineer and the inspections so the whole job is compliant and properly signed off.
- Structural engineer appointed and coordinated for the design
- Underpinning and foundation strengthening in sequenced bays
- Party wall process explained, and work built to the award
VOA Council Tax stock of properties, March 2025, for all 41 statistical areas in Ealing. Counts rounded by the VOA.
Why Choose GS Renovation in Ealing
GS Renovation is the single point of responsibility for structural alterations in Ealing. From engineer-designed openings, replacement joists and sequenced underpinning to Ealing Council building control sign-off, we manage every strand. You get steel installed to the engineer's sizing, safe staged working in an occupied W3 or UB6 home, tidy site practice, and our founder's 30+ years of experience behind every job.
We loved working with George and Ibrahim and would highly recommend them. They have done splendid job on our new kitchen refurb which including new…
Built a new extension at rear of property. Laid foundations, drainage, raised floor, new roof and completed all fixtures and interior decoration…
The kitchen has been fitted to the high standard. Saaid was polite, professional, tidy, he pays attention to a little details that make huge…
FAQ
Frequently Asked Questions about Structural Alterations Ealing
Can you quote structural alterations for a W5 property over the phone?
A phone quote for structural alterations at a W5 property would be a figure that changes, so GS Renovation gives the range, £1,500 to £21,000 or more, from a simple opening to underpinning one elevation (indicative), and prices after a visit. What the job costs depends on what only a survey shows, because what each wall and floor carries decides the design. Talk the scope through on 07472 424 226; the Ealing survey is free.
My Ealing semi shows cracking near a large tree. Do I need underpinning?
Not always. Seasonal clay movement near mature trees is common across Ealing, and some cracking is superficial. A structural engineer's inspection determines whether the foundations have actually subsided and whether underpinning, root management or repair is the right fix. If underpinning is needed, we carry it out in sequenced bays under Ealing Council building control, after any party wall notice you serve as building owner.
What goes over a new window or door opening in an Ealing Victorian terrace wall?
A lintel sized for the full wall thickness. Victorian terraces around Hanwell were mostly built in solid brick, not cavity walls, so the lintel has to carry the whole depth of masonry above, often with a bay or window over it. The engineer specifies the lintel and its bearing length, and building control inspects it before the reveals are plastered.
Is removing an upstairs wall in Ealing simpler than one on the ground floor?
Not always. Upstairs partitions in an Ealing house can be lightweight studwork, but some carry ceiling joists or take load from the roof through struts and binders. The loft is checked first. If anything bears on the wall, it needs the same engineer's calculations, propping and building control approval as a ground floor wall, just with less weight above.
Can I add a rooflight or change the roof of my Ealing house without an engineer?
Rarely. Cutting rafters to fit a rooflight or remove a purlin changes how the roof carries itself, so an engineer designs the trimming and any new steel. It is a Building Regulations matter through Ealing Council, and Part L applies if the roof insulation is renewed at the same time. The structure goes in before any felt, battens or insulation.
When does an Ealing structural alteration need the neighbour's agreement?
When the work touches the party wall. With 28% of Ealing homes recorded by VOA as terraced, a beam bearing on the shared wall or a pocket cut into it is common, and that needs a party structure notice at least two months ahead. If the neighbour dissents, surveyors agree an award before any cutting begins, so notices go out early.
Does taking down an old rear addition in Ealing need a demolition notice?
It may. Anyone carrying out demolition work in Ealing must notify the council under Section 80 of the Building Act 1984. Whether taking down a failing rear addition before a rebuild falls within that duty turns on the building and the work, so describe exactly what is coming down to Ealing building control and ask before the first brick comes off. Keep the answer on the project file, with the engineer's propping scheme for the main wall where the addition joined it.
What does Ealing ask for before a basement is dug under a house?
A method statement. Ealing's SPD 4 says that if permission is granted for a basement, a method statement providing information about structural and construction matters is required. The same SPD says basement proposals in a conservation area will be resisted where they would harm its character or appearance. So check the designation of the street first, then commission the engineer's method statement early, since for a basement those matters include the propping, the sequence of the dig and the effect on the neighbouring walls. If the dig comes close to next door's foundations, you as the building owner serve party wall notice before it starts.
Does structural work on a Half Acre Road roof in Hanwell need planning permission first?
It does if the roof gets bigger. In Churchfields, Half Acre Road, an Article 4 direction requires planning permission for the enlargement of a dwelling house by an addition or alteration to its roof. A structural scheme that adds to the roof or changes its shape therefore needs permission before work starts. Rebuilding a sagging roof to its existing shape is a different question, so put the scheme to Ealing's planners and get the answer in writing before the scaffold goes up.
Every Service, One Team
More GS Renovation Services in Ealing
One team for every GS Renovation service in Ealing:
Same Service, Nearby Areas
Structural Alterations Near Ealing
We carry out structural alterations across Ealing and the surrounding areas. Explore a nearby location:
Ready to Start Your Ealing Project?
Free, no-obligation quote for structural alterations in Ealing.