Structural Alterations Romford
Structural alterations, new openings, underpinning and floor structures in Romford, 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 throughout Romford, whether that is a new opening in an interwar semi near Raphael Park or replacement joists in a generous 1930s suburban home in RM1. We build new openings, supported beams, replacement joists and underpinning to the design of the structural engineer we appoint.
In Romford, 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 Romford.
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 Romford address and an itemised quote.
- The engineer we appoint designs the work, and it is registered with Havering 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.
New openings and supported beams in Romford
Romford's interwar houses sit on good plots, which makes them ideal for rear openings into extensions, wider doorways through the solid spine wall, or a supported opening between kitchen and dining room. Every one of these is a structural change to load-bearing brickwork, so we begin with a structural engineer who calculates the steel beam and the padstones needed at each bearing.
On site we prop the structure above, form the opening in staged cuts, and set the beam onto its padstones before the temporary supports come out. Because many of these 1930s homes have suspended timber ground floors, we also check the joists and wall plates as we go, replacing any that have softened over ninety years of service.
Housing in Romford
The valuation list shows roughly 20,230 homes in Romford, of which 15% are pre-1919, 42% interwar and 43% post-1945, split 35% flats to 65% houses. 28% of homes here are terraced; underpinning the party wall of a terrace in Romford needs a notice to the neighbour.
Structural work near Romford Market Place and the public sewer
Romford Conservation Area was designated in 1968 to protect the Market Place and the group of old buildings at the western end of Market Place. If your building is inside it, changes to the outside are more tightly controlled than in the streets around it. In a Havering conservation area, consent is required for the total or substantial demolition of any building of 115 cubic metres or more. Taking down an old rear store or stable block to rebuild it can reach that size. Measure it before the design is drawn, because the consent has to be in place before demolition starts.
Out in the residential streets of Romford the usual obstacle is below ground. In Havering you must make a full plans application, not a building notice, if the work is near a public sewer. A new opening that needs piers on fresh foundations, or underpinning along the back of a house, can sit close to the drain that leaves the kitchen and bathroom. Havering also asks anyone planning to demolish a building to tell the council at least six weeks before starting the work. Map the drains and the demolition early, so neither adds weeks after the start date.
Underpinning and joists in Romford homes
Some Romford properties near mature trees around Raphael Park sit on shrinkable London clay, and seasonal movement can leave older foundations needing underpinning. Where an engineer confirms it, we underpin in the traditional sequenced bays, working under building control inspection so the new foundations are recorded and signed off under the Building Regulations rather than treated as cosmetic patching.
Replacement joists are common in these interwar homes too, whether from historic leaks or notching by earlier trades. We fit new joists to the span, provide proper end bearings and restraint, and coordinate with Havering building control throughout. None of this needs planning permission, though a listed home needs listed building consent for it; it is building control that certifies the structural work.
- Temporary works, propping and needling
- Steel beam and RSJ installation
- Lintel replacement and repair over failed openings
VOA Council Tax stock of properties, March 2025, for all 5 statistical areas in Romford. Counts rounded by the VOA.
Trusted Structural Alterations in Romford
For structural alterations in Romford, GS Renovation gives you a single accountable team: beams, joists and underpinning built to the design of the engineer we appoint, drawings for any party wall notice you serve where the semi is shared, and Havering building control managed from application to sign-off. Our founder's 30+ years on the tools means we know the interwar stock, work tidily around your family, and leave every alteration signed off by building control.
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…
Excellent service. George's knowledge and skills are the best in the market. He knows what he is doing, does really high quality work, gives good…
FAQ
Frequently Asked Questions about Structural Alterations Romford
Which parts of a structural alterations project in Romford cost the most?
Labour and the making good usually cost the most on a structural alterations project in Romford, within £1,500 to £21,000 or more, from a simple opening to underpinning one elevation (indicative). The days on site at RM1 depend on access, condition and how many trades must follow each other: underpinning is dug in controlled bays, never all at once. GS Renovation sequences them to avoid idle time, which is the practical way to control cost.
Do I need planning permission for structural alterations in my Romford home?
Usually not. Internal structural work such as new openings, replacement joists or underpinning is controlled under the Building Regulations by Havering building control, not planning. Planning only becomes a question if the outside changes, and listed buildings need listed building consent for internal structural work too. We arrange the engineer, submit the building control application and manage inspections through to the completion certificate.
How are the suspended timber ground floors in Romford semis checked during structural work?
By lifting boards and inspecting the joists, wall plates and sleeper walls beneath, particularly near the bay and outer walls where air bricks may have been blocked. Soft or damp timber is cut back and replaced and the air bricks cleared so the void ventilates. Any padstone for a new opening above is set on sound masonry, never on a joist end or wall plate.
Does a new doorway through an internal wall in a Romford house need a lintel?
If the wall is load-bearing, yes. A doorway cut through the spine wall of a Romford semi sits under the first-floor joists, so the lintel or steel is sized by an engineer and bears on sound brick each side. The door head height is set against the joists above, and building control checks the bearings before the opening is plastered and the lining fitted.
Can the flank wall of a Romford semi take a new window or door?
Usually, once the engineer has checked what it carries at that point. The flank wall often supports the stair, the landing and part of the roof, so a lintel or steel is sized for the actual load and placed clear of the stair trimmers. Meters, pipes or drains on that side are located first, and building control inspects the finished opening.
Can an upstairs wall be altered in a Romford maisonette?
Only with the freeholder's written consent under the lease, since an upper-floor wall may carry roof timbers that belong to the building. The engineer looks in the roof void first: if struts or purlins bear on the wall, a beam or new supports in the loft take over. Building control approves the design, and the lower flat may need access if loads come down through it.
Does underpinning near a tree in a Romford conservation area need Havering's agreement for the tree work?
It can. In a Havering conservation area, pruning or felling trees with a trunk diameter of more than 7.5 cm has to be cleared with Havering before the work. Underpinning near a tree can involve cutting roots or reducing the crown, so raise the tree with the planners early. Settle it before the structural engineer we appoint fixes the underpinning depth, since the depth can depend on whether the tree stays.
What should you find out before altering a Romford house built after 2000?
16% of Romford homes were built in 2000 or later, and newer houses can use trussed roofs, engineered floor joists or a timber frame, none of which can be cut on assumption. Before a new opening is designed, find the original structural drawings or the building control completion records for the house. The structural engineer we appoint can then work from the manufacturer's data for the joists and trusses rather than opening up blind.
Is there a charge for telling Havering about a small demolition in Romford?
Yes. Havering has a demolition notice charge for small demolition schemes up to the size of a single dwelling, such as an outbuilding or old garage cleared to make way for new work. Check with Havering building control whether your structure falls within the notice rules. If it does, give notice when the rest of the application goes in, so the waiting period runs in parallel with the approvals rather than after them.
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