Structural & Concrete Work London

Structural alterations, RC basements, underpinning, concrete staircases and RC apartment construction in London. Fully managed, engineering-led. Get a free quote.

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Structural and concrete work sits at the foundation of any serious renovation or construction project. Get it wrong and everything built on top of it is compromised. Get it right and you have a property that is safe, stable, and built to last.

Refurboo carries out specialist structural and reinforced concrete work across London — from underpinning foundations and constructing RC basements to removing load-bearing walls, installing concrete staircases, and building RC apartment structures. We work to structural engineer drawings, comply with building regulations at every stage, and manage the full process so you have one team accountable from ground to completion.

What we cover:

  • RC basements and basement construction
  • Underpinning and foundation strengthening
  • Structural alterations — load-bearing wall removal, RSJ/steel beam installation
  • Reinforced concrete (RC) staircases
  • RC apartment and residential construction
  • Structural repairs and remediation
  • Retaining walls and concrete slabs
  • Party wall agreement management

Speak to our structural team. Call 020 3488 7166 or request a free quote →

London Structural & Concrete Work Experts Your Can Trust

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Our Structural & Concrete Services in London

Every structural project we take on is planned around engineering specifications, carried out by experienced tradespeople, and signed off through building control. Below are the core services we deliver.

An RC (reinforced concrete) basement adds substantial living or storage space to a London property without increasing its footprint above ground. It is one of the most effective ways to add square footage to a house in a city where ground-level space comes at a premium.

The process involves underpinning the existing walls in carefully sequenced sections, excavating the basement void, forming a reinforced concrete floor slab, constructing RC retaining walls, and installing a waterproofing system to create a fully habitable, dry space below ground.

We manage every stage, structural engineering coordination, excavation, underpinning, RC works, waterproofing, drainage, and fit-out handover. All work complies with UK building regulations and requires planning permission in most cases, which we advise on at the outset.

Underpinning is required when existing foundations are inadequate to support the structure above — whether due to soil movement, subsidence, root damage, or a planned addition of extra storeys or basement space.

We carry out traditional mass concrete underpinning, excavating below the existing footing in one-metre sections, pouring concrete to the required depth, and allowing each section to cure before moving to the next. This method is proven, reliable, and widely used across London’s older housing stock.

We also carry out mini-pile underpinning where soil conditions or access constraints make traditional methods impractical. All underpinning work is carried out to structural engineer drawings, and we work closely with your engineer throughout the project.

Structural alterations are among the most in-demand works on London period properties. Removing a load-bearing wall between a kitchen and living area, creating an open-plan ground floor, forming a new structural opening, or removing a chimney breast all require proper engineering and correct installation of steel beams.

We carry out the full process — confirming whether a wall is load-bearing, coordinating structural calculations with your engineer, supplying and installing RSJ steel beams and padstones, using temporary acrow props throughout, and completing the structural package including brickwork and fire-rated board boxing. All work is inspected and signed off by building control before we close up.

Common structural alterations we carry out include:

  • Load-bearing wall removal between rooms
  • RSJ (Rolled Steel Joist) and goalpost steel beam installation
  • Chimney breast removal
  • Forming large openings for bifold or sliding doors
  • Creating openings for extensions and loft conversions
  • Structural works as part of wider renovation projects

A reinforced concrete staircase is the most durable and structurally sound option for residential properties, basement conversions, extensions, and new builds. Unlike timber, concrete staircases do not flex, creak, or degrade over time. Properly formed and finished, they can be left as polished concrete, tiled, or fitted with timber treads to suit the aesthetic of the property.

We design and construct RC staircases to structural drawings, including straight flights, quarter-turn, and half-turn configurations. We handle formwork, reinforcement bar placement, concrete pour and cure, and surface finishing — all as part of the wider structural package or as a standalone scope.

Extensions and loft conversions both require structural work to be carried out correctly before any fitting-out can begin. This includes forming new openings in external walls, installing steel beams to carry floor and roof loads, building new structural walls, and ensuring the existing structure is properly supported throughout the build.

We carry out all structural elements of extensions and loft conversions as part of a fully managed package, or we can work as the structural contractor alongside your main build team.

For developers and landowners building new residential apartments in London, reinforced concrete frame construction provides the structural durability and fire resistance required for multi-storey residential buildings.

RC apartment construction involves designing and building the reinforced concrete frame — columns, beams, floor slabs, core walls, and staircase structures — to structural engineering specifications. We carry out rebar fixing, formwork and shuttering, concrete pours, and finishing works.

We work with residential developers, architects, and structural engineers on projects ranging from single new-build units to small apartment block developments, managing the structural concrete package with our own in-house team.

Retaining walls are required wherever a change in ground level needs to be structurally held in place — garden excavations, basement light wells, driveway alterations, and site clearance works all commonly require retaining wall construction.

We form reinforced concrete retaining walls to engineering specifications including correct reinforcement, drainage provisions, and surface finishes. We also construct ground-bearing and suspended concrete slabs for extensions, basement floors, and new build ground floors.

Older London properties frequently require structural repair work — cracked lintels, failing brickwork, damaged concrete, movement in floors and walls, and deteriorated timber structural elements. Left unaddressed, structural defects worsen and become significantly more expensive to fix.

We carry out structural repair and remediation works following structural assessment, addressing the root cause of the problem rather than simply covering over the symptoms.

Signs Your Property Needs Structural Work

Not all structural issues are immediately obvious. These are the most common warning signs that indicate a structural investigation is needed.

  • Diagonal cracks running from corners of doors or windows — particularly if they are widening over time
  • Doors and windows that have become difficult to open or close without explanation
  • Visible gaps between the wall and ceiling or floor
  • Cracks in external brickwork, especially stepped cracks following the mortar lines
  • A floor that feels uneven, springy, or has developed a noticeable slope
  • Damp in a basement or ground floor that keeps returning despite treatment
  • Visible sagging in a ceiling, particularly in older properties with timber joists

If you are seeing any of these, a structural assessment before renovation work begins is essential.

How We Work on Structural & Concrete Projects

We discuss what you are trying to achieve — whether that is a basement, an open-plan alteration, a new staircase, or a structural repair. We identify what engineering input is required and what permissions need to be in place before work begins.

We work with your appointed structural engineer or can recommend a qualified engineer for the project. Structural drawings and calculations must be in place before any load-bearing work starts. We do not begin structural work without the correct engineering sign-off.

Most structural work requires building regulations approval. Basement construction and certain alterations also require planning permission. We advise on what is needed, manage building control notices, and ensure all work is compliant at every stage.

We provide a written quote based on the structural drawings and agreed scope. The programme sets out the sequence and duration of works. What we quote is what you pay, subject to any changes in scope.

We carry out all concrete and structural works with our own team, underpinning, excavation, RC works, formwork, steelwork, and brickwork reinstatement. We maintain a safe and organised site throughout, particularly important on structural projects where temporary works are in place.

We coordinate all building control inspections at the required stages and obtain the completion certificate on your behalf. No structural work is considered complete until it is properly certified.

Structural & Concrete Work Cost in London

Structural and concrete work costs vary depending on the type of project, depth of foundations, site access, and the extent of engineering required. Below is a general guide.

ServiceTypical ScopeEstimated Cost
Load-Bearing Wall Removal + RSJStructural assessment, beam supply and install, reinstatement£2,500 – £6,000
UnderpinningPer bay, mass concrete method£1,500 – £3,000 per bay
RC Basement ConstructionFull basement excavation, underpinning, slab, waterproofing£60,000 – £150,000+
Concrete StaircaseStraight flight, formed and finished£8,000 – £20,000
RC Apartment FramePer floor, structure onlyPOA — varies by project
Retaining WallReinforced concrete, per linear metre£800 – £2,000 per m

All prices are guide figures only. Every structural project is assessed individually. Contact us for a site visit and accurate written quote.

Why Choose Refurboo for Structural & Concrete Work in London?

We do not carry out structural work without proper engineering drawings and building regulations compliance. Every project is planned around the structural calculations, carried out to spec, and inspected at the required stages.

The structural and concrete work is carried out by our own team, not passed to subcontractors. This means we maintain direct control over quality, timing, and site safety at the most critical stages of any project.

Victorian terraces, Edwardian semis, Georgian townhouses, modern apartments, and new-build residential developments, we have carried out structural work on all of them. We understand the construction methods, foundation types, and common defects associated with each.

We manage planning applications, building control notices, structural engineer coordination, and party wall agreements where required. You do not need to navigate this yourself.

Structural work rarely happens in isolation. Where a project includes wider renovation, kitchens, bathrooms, fit-out, finishes, we manage the structural phase and the renovation work as a single coordinated project, eliminating the coordination gap between separate contractors.

Structural projects require clear scopes and accurate pricing. We provide written quotes based on engineering drawings and agree on a fixed price before work begins. We communicate immediately if anything genuinely unforeseen arises during excavation or opening up.

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yusuf jacobs
1 month ago
I had an excellent experience working with this renovation team. They were dependable, professional, and the quality of their work really stood out. Communication was consistent and clear from start to finish, and everything was completed within the agreed timeline. I’m very pleased with how everything turned out and wouldn’t hesitate to recommend them to others.
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Nuvira Cleaning
1 month ago
5 stars isn’t enough, I am amazed by this companies work. Sourced a renovation company for a client, and they are gobsmacked by the results.
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Derick Winston
1 month ago
Refurboo was amazing!!!! I got a full kitchen and bathroom renovation. Reasonable priced with quality results!!!
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Jay
1 month ago
I used Refurboo for my bathroom renovation on April the 4th. Wonderful model look, great result. Would highly recommend!!!
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Daniel Akin
3 months ago
We recently had our kitchen renovated by this team and the experience was excellent from start to finish. The quality of the workmanship was outstanding and the attention.
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User ps4
3 months ago
We had a great experience with this renovation company. The team was professional, reliable, and delivered high quality work. They communicated clearly throughout the project and finished on time. I’m really happy with the final result and would definitely recommend them.

Ready to Discuss Your Structural Project in London?

Structural work requires the right team, the right engineering, and the right approach from day one. Refurboo carries out structural and reinforced concrete work across London to the standards required for a safe, compliant, and lasting result.

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Structural & Concrete Work FAQs

It depends on the type of work. Internal structural alterations such as removing a load-bearing wall generally require building regulations approval but not planning permission. Basement construction typically requires both planning permission and building regulations approval. Work in conservation areas or listed buildings may have additional restrictions. We advise on exactly what is needed at the outset of every project.

It depends on the type of work. Internal structural alterations such as removing a load-bearing wall generally require building regulations approval but not planning permission. Basement construction typically requires both planning permission and building regulations approval. Work in conservation areas or listed buildings may have additional restrictions. We advise on exactly what is needed at the outset of every project.

Underpinning strengthens or deepens existing foundations by excavating below the current footing and filling with concrete in controlled sections. Piling drives or drills structural piles into stable ground to create new load-bearing points. Underpinning is more common for residential properties in London; mini-piling is used when ground conditions or access constraints make traditional underpinning impractical. We carry out both.

A typical residential RC basement in London takes between 3 and 6 months from start to structural completion, depending on the size of the space, depth of excavation, and soil conditions. The fit-out phase follows and adds further time. We provide a detailed programme at the start of every basement project.

If your structural work is near or on a shared boundary with a neighbouring property, which is common with basement construction and underpinning in London terraces, you are likely required to serve notice under the Party Wall Act 1996. We advise on whether a party wall agreement is needed and can recommend a party wall surveyor if required.

Yes, in fact this is the most efficient way to approach it. We regularly carry out structural alterations, RC works, and underpinning as the first phase of a full home renovation, handing directly to our own teams for fit-out works once the structural package is complete.