Structural Reinforcement in London
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Strength is the foundation of every safe building.
At Bigness Group, we specialise in structural reinforcement services that restore and enhance the stability of residential, commercial, and heritage properties across London.
Whether it’s strengthening load-bearing walls, stabilising foundations, or upgrading beams for new extensions, we ensure every structure meets modern safety standards and performs reliably for decades to come.
Our engineers combine deep technical expertise with advanced materials and precision workmanship — turning weak points into lasting strength.
What Is Structural Reinforcement?
Structural reinforcement means improving or restoring a building’s load-bearing capacity so it can safely support new loads or recover from damage.
It may involve concrete or steel strengthening, underpinning, wall stitching, or composite reinforcement systems.
At Bigness Group, we assess the existing structure, design the right solution, and carry out works that comply with Building Control, BS standards, and engineering best practice.
The result: safer buildings, fewer risks, and complete peace of mind.
Our Structural Reinforcement Services
We deliver comprehensive solutions for structures of every type — from period homes and basements to commercial frameworks.
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Load-Bearing Wall Reinforcement – RSJ and lintel installations for openings, conversions, and extensions.
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Foundation Strengthening & Underpinning – Deepening or widening foundations to stabilise subsidence or support additional floors.
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Concrete Repair & Steel Strengthening – Rebar replacement, crack injection, and plate bonding for deteriorated elements.
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Masonry Stitching & Wall Ties – Restoring cracked or bowed brickwork with stainless-steel systems.
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Structural Frames & Beams – Installation of new steel or composite frames to increase load capacity.
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Structural Assessments & Reports – Engineer-certified documentation for insurance and Building Control approval.
All works are designed and signed off by qualified structural engineers, ensuring precision from calculation to completion.
Our Process
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Inspection & Assessment – A chartered engineer surveys the structure, identifies causes of weakness, and outlines reinforcement options.
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Design & Specification – We produce drawings, load calculations, and method statements tailored to the site.
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Preparation & Safety Measures – Temporary supports, props, and access systems are installed to secure the area before works begin.
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Implementation – Our skilled teams carry out reinforcement works using approved techniques and certified materials.
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Testing & Certification – Load testing and structural reports confirm compliance and safety.
This process guarantees that every reinforcement we deliver meets engineering accuracy, durability, and legal compliance.
Why Choose Bigness Group
Bigness Group isn’t just a builder — we’re a partner in protecting structural integrity.
Our cross-disciplinary teams bring together structural engineers, surveyors, and craftsmen who understand how buildings move, age, and perform.
With us, you get transparency, accountability, and results backed by data and certification.
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Certified structural engineers and on-site specialists
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Proven experience with residential, commercial, and heritage structures
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Coordination with architects and Building Control officers
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Compliance with BS EN and Eurocode standards
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Insurance-backed guarantees and full documentation
We reinforce structures not just for today, but for the next generation.
Frequently Asked Questions
Q: What causes a building to need reinforcement?
Common causes include structural alterations, subsidence, corrosion, poor original design, or added loads from new floors or extensions.
Q: Do you provide engineer reports?
Yes — every project includes a structural assessment and completion certificate signed by a qualified engineer.
Q: Can reinforcement be done on occupied properties?
Yes. We plan works in phases, maintaining safety and minimising disruption for residents or businesses.
Q: How long does reinforcement work take?
Minor wall reinforcements can take 1–3 days, while full foundation strengthening may require several weeks depending on complexity.
Q: Do you handle Building Control approvals?
Absolutely. We liaise with Building Control and submit all structural calculations and reports required for approval.
Recent Reinforcement Projects
From underpinning period properties to installing structural steel frames in commercial redevelopments, our portfolio showcases precision, safety, and innovation. Each project demonstrates our ability to strengthen buildings while preserving architectural integrity — ensuring longevity and compliance.
Structural Reinforcement Across London
Bigness Group provides reinforcement services throughout all London boroughs — from Victorian terraces in Islington to new-build sites in Croydon. We understand each borough’s planning and compliance requirements, enabling smooth approvals and efficient project delivery. Our regional teams ensure prompt scheduling, expert supervision, and consistent workmanship wherever we operate.
Barking and Dagenham / Barnet / Bexley / Brent / Bromley / Camden / Croydon / Ealing / Enfield / Greenwich / Hackney / Hammersmith and Fulham / Haringey / Harrow / Havering / Hillingdon / Hounslow / Islington / Kensington and Chelsea / Kingston upon Thames / Lambeth / Lewisham / Merton / Newham / Redbridge / Richmond upon Thames / Southwark / Sutton / Tower Hamlets / Waltham Forest / Wandsworth / Westminster