Structural alterations, new openings and steel support in Bexleyheath. Trusted, professional, 30+ years' hands-on experience.
GS Renovation carries out structural alterations throughout Bexleyheath and the surrounding DA6 suburbs, from new openings in 1930s semis to replacement joists, supported openings and underpinning. Over more than 30 years working the interwar housing stock around Bexley, we have handled the full range of structural jobs these generous-plot homes throw up, all engineer-designed and signed off by building control.

Interwar semis in Bexleyheath were solidly built, but decades of use and past DIY can leave joists overloaded, openings unsupported and walls altered without calculations. We put that right. Whether you want a wider opening between kitchen and dining room, a new doorway through a structural wall, or replacement floor joists where timbers have sagged or suffered rot, we start with an engineer's assessment of exactly what the structure is carrying.
New and enlarged openings in these homes are formed with a correctly sized steel beam or lintel bearing onto padstones, with temporary propping in place before any masonry is cut. Where the ground has moved and there is settlement, underpinning may be needed to deepen and strengthen the foundations. Every element is designed to the loads involved rather than guessed, which is what keeps the house sound for the long term.
Structural alterations are notifiable under the Building Regulations, so Bexley Council's building control inspects the work rather than any planning department. We manage the submission of the engineer's calculations, book inspections at the propping, beam and completion stages, and secure the certificate that proves the work was done correctly. Inside your house, planning permission does not come into it unless the property is listed.
Because Bexleyheath's houses are semi-detached, alterations that touch or bear into the shared party wall bring the Party Wall Act into play, and you serve the required notice on your neighbour. We coordinate the engineer, the party wall side and building control as one process, so you are never left chasing separate trades or wondering whether a stage has been signed off.
Homeowners across Bexleyheath rely on GS Renovation because structural alterations demand one team that owns the whole chain: engineer's design where the semi-detached wall is affected, safe propping and installation, and building control certification with Bexley Council. We keep sites tidy in lived-in homes and bring more than 30 years of structural experience to every opening, joist and underpinning job.
He was very very good. He just got on with the job and we was beey pleased with the result. He Also cleaned everything away when he finished. Will…
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great…
Giorgio is an excellent and intelligent workman, and with very reasonable prices! He installed a kitchen extractor fan in a complicated situation…
FAQ
Set aside the structural element, the finishing trades and the approvals as three separate amounts. That is how the structural alterations quotation for a Bexleyheath home is laid out, and it is why the DA6 survey happens before any figure is discussed. The engineer's fee, where structural alterations need a design, is shown rather than buried. Ask GS Renovation on 07472 424 226 for the current position in Bexley. The survey at the DA6 property is free, in Bexleyheath and across Bexley. As a rough guide, structural alterations in London ranges from roughly £1,500 for a simple opening to £15,000 or more where underpinning or major works are involved (indicative London ranges, MyBuilder and Checkatrade, 2026). Your figure depends on the size, specification and condition of the property, which is why we survey before quoting.
A realistic one allows for approvals, construction and drying time. GS Renovation programmes structural alterations at a DA6 property in stages, marks the Bexley Council inspections, and builds in the curing periods that cannot be rushed. That is why our Bexleyheath dates hold when optimistic ones do not. Ring 07472 424 226 for the range typical of an interwar semi-detached home in Bexley. The written Bexleyheath programme always accompanies the quotation rather than turning up with the invoice.
It is what we do week in, week out across Bexleyheath and Sidcup. GS Renovation has carried out structural alterations on this type of stock repeatedly, which is why the DA6 survey takes account of things that appear on no drawing. The 31 public MyBuilder reviews cover the same work. Ring 07472 424 226 and we will describe recent Bexley projects in detail. Insurance and company details are provided at the DA6 survey in Bexleyheath.
Yes, building regulations approval and an engineer's design, and it is notifiable under the Party Wall Act where it falls within three metres of a neighbouring structure. Underpinning at a DA6 address is carried out in controlled bays to keep the existing building stable throughout.
Almost all, which is exactly why the survey matters. Structural alterations at a DA6 address of that age is priced on what we find rather than on a standard detail, and GS Renovation has done enough of them across Bexleyheath and Sidcup to know where to look. The 31 public MyBuilder reviews cover the same work. Ring 07472 424 226 for recent examples. Ask on 07472 424 226 what structural alterations usually finds at a DA6 address of that age.
Often, yes. Bouncy or sloping floors in interwar homes usually mean joists are undersized, overloaded, or weakened by notching, rot or old alterations. A structural engineer inspects the timbers, confirms the cause, and specifies replacement or reinforced joists sized to the span. The work is signed off by Bexley Council's building control, and we handle the survey, the fix and the certification.
Every part, houses and flats alike. GS Renovation works across Bexleyheath and the DA6 area and much of South East London, so structural alterations at your DA6 address is straightforward to service. The constraint is capacity rather than geography. Call 07472 424 226 early if the Bexley project has a deadline attached. We will tell a Bexleyheath homeowner honestly when the next slot is. Small jobs are as welcome as large ones here, and the written quotation follows within days.
Every Service, One Team
The same trusted team, 30+ years' hands-on experience and free, no-obligation quotes apply to every GS Renovation service in Bexleyheath. Explore what else we do locally:
Same Service, Nearby Areas
We carry out structural alterations across Bexleyheath and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for structural alterations in Bexleyheath. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.