Structural alterations, new openings and steel support in Havering. Trusted, professional, 30+ years' hands-on experience.
GS Renovation carries out structural alterations throughout Havering, from new openings in the interwar semis of Romford to replacement joists and supported openings in Hornchurch and Upminster. Drawing on 30+ years in RM1, RM3, RM11 and RM14, we form new openings, renew tired joists and underpin where the ground demands it, all to an engineer's design.

The generous plots of Havering's interwar houses give real scope for structural change: a wider opening between kitchen and garden room, a supported opening onto a side return, or replacement joists where an original floor has sagged over ninety years. Each of these needs a structural engineer to size the steel or timber and to specify padstones, and each is built with temporary propping and staged, careful demolition.
Some of Havering's suburban homes off the busier RM3 and RM14 roads show movement in older extensions or bay fronts, where underpinning or a beam over a failed lintel is the right answer. We investigate before we quote, so the work matches what the house actually needs rather than a guess, and every opening is formed on proper bearings that spread the load into sound masonry.
Structural alterations inside your home fall under the Building Regulations, so Havering Council's building control or an approved inspector reviews the engineer's calculations and inspects the work before certifying it. Planning permission is only involved where the exterior changes on a listed building or within a conservation area, which is a separate matter from the structural sign-off you need internally.
In the borough's semi-detached and terraced stock, alterations near the wall shared with a neighbour are notifiable under the Party Wall Act, and underpinning close to the boundary almost always is. You serve the notices, coordinate the engineer, prop and build safely, and see the certificate through, so one team stands behind the whole alteration from survey to completion.
Havering homeowners choose GS Renovation for structural alterations because we bring one accountable team to the whole job. The engineer's design, building control sign-off and safe on-site propping are all handled by us, with tidy working in your home and 30+ years of structural experience across the borough behind every opening and repair.
What can I say!!! George is an extremely lovely man his workmanship is second to none, he has an excellent eye for detail and nothing was to much…
Saiid did a complete refurbishment of our small bathroom. This involved ripping out the existing bath/shower, basin, toilet, pipework, and tiles and…
Punctual, worked hard, and did exactly what he was asked and what he said he would do. Overall, a very high quality job. Will use again.
FAQ
Not a real one, no. We can explain on 07472 424 226 how structural alterations are usually approached in a Havering home and what tends to move the cost, but the RM1 property has to be seen before GS Renovation commits anything to paper. Builders who quote blind across Havering are the ones who revise later. Email info@gsrenovationltd.co.uk with the address and we will arrange a time. The RM1 survey carries no obligation of any kind. 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.
Modern stock is usually faster to finish. Where structural alterations are concerned the difference shows after the structural stage, because a 1920s and 1930s suburban Havering property needs far more reinstatement around the RM1 works. GS Renovation allows for that difference in the programme it issues. Both types are surveyed the same way in Havering before any dates are committed. Ask GS Renovation on 07472 424 226 what a 1920s and 1930s suburban property at RM1 is likely to require in practice.
We tell you immediately, price the fix, and get your agreement before continuing. Problems on a structural alterations job usually surface when a 1920s and 1930s suburban RM1 property is opened up, and hiding them helps nobody. GS Renovation sets out the effect on the Havering programme and on the cost in writing. Work resumes once you have decided, not before. Ring 07472 424 226 to hear how Havering variations are agreed. Nothing at RM1 proceeds without your written approval in Havering.
Yes. New openings, steel beams, replacement joists and underpinning are all notifiable, must be designed by a structural engineer and signed off by Havering Council. Planning permission is only engaged where the work affects the exterior or a listed building. GS Renovation handles the approvals for your RM1 property.
Not for us, though they punish assumptions. The mistake on structural alterations in older Havering housing is pricing from a drawing rather than from the RM1 building, and that is what produces the variations homeowners resent. GS Renovation surveys properly first. Over 30 years of hands-on experience is mostly about knowing what to check in Havering. GS Renovation will describe the checks structural alterations need at an RM1 address in Havering before starting work.
Usually not. Internal structural work, whether a new opening, replacement joists or underpinning, is controlled under the Building Regulations, so Havering Council's building control signs it off rather than planning. Planning only comes into play for exterior changes on a listed building or within a conservation area. Where a shared wall is affected, the Party Wall Act may also apply, and we handle that.
Give us the postcode and you will have an answer immediately. We cover Havering and the surrounding Havering for structural alterations, including addresses that sit right on the edge of RM1. GS Renovation is on sites nearby most weeks. If we are not the right firm for your 1920s and 1930s suburban property we will say so. Email info@gsrenovationltd.co.uk and we will come back the same day. Nothing is owed for the reply or the RM1 survey.
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 Havering. Explore what else we do locally:
Same Service, Nearby Areas
We carry out structural alterations across Havering and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for structural alterations in Havering. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.