Steel beams, columns and fabricated frames for home extensions, from a single beam to a complete steel package. Help for builders and self-builders, with fabrication and delivery planned around your site.
Looking for steel beams for home extensions? At MAH Steel, we supply structural steel beams for extensions from stock, ready for fast delivery across Kent, London and the South East. Whether you need a single beam or a full package of steel for an extension, we deliver on time with a 98% on-time delivery rate.
Whether you are opening up the rear of a house, adding a side extension or planning a larger renovation, we supply a full range of structural steel beams for home extensions, including I-beams and universal columns, suitable for both load-bearing and support applications. We also produce custom steel beams for bespoke extensions, manufactured to your exact drawings. All steel is cut, prepared, and ready for installation, helping you avoid delays on site.
An extension might be one job among many, or the biggest project you have ever managed. MAH works with homeowners, self-builders, builders and trade contractors, and the questions they ask are different.
Send us your engineer's drawings, your programme and any site restrictions. We work from agreed drawings and specifications, with practical coordination before the steel reaches site, and plan delivery around the access you have.
Fabrication, coordination and delivery planning
Self-building or managing your own extension? You can contact MAH with any questions. You do not need to know the technical terms: we can talk through what drawings are needed, what the fabrication involves and how the steel will reach your property, working alongside your builder and structural engineer. Send your drawings, or just outline what you are planning.
Plain English, not jargon
Every property and set of drawings is different. We prepare the beams and fabricated details around the agreed requirements, rather than offering a one-size-fits-all steel package.
Beams and supporting steelwork for the new openings at the rear or side of a home.
Suits small rear extensions to larger wraparound builds
Steel made to the engineer's drawings where existing walls are removed and new support is needed.
Suits internal wall removal, from a single RSJ upwards
Goalpost and other frame arrangements, columns, plates and connections made to your exact drawings.
Suits wide openings such as bifold doors
A coordinated package of beams, columns and fabricated components, cut and prepared ready for installation.
Suits a single beam or a full package of steel
Narrow roads, limited unloading space and the position of the extension all affect how steel can be delivered. MAH's own HIAB-equipped lorries give us options for lifting steel over buildings and into rear gardens, subject to site conditions and safe lifting requirements.
We know access can be a challenge on residential jobs. Our HIAB-equipped lorries are ideal for tight driveways, narrow streets, and restricted sites, allowing us to place steel beams for extensions exactly where they’re needed. This reduces manual handling and helps keep your build on schedule.
MAH's crane lorry options include up to 30m reach, which can help where steel has to go over a building or into a rear garden. Vehicle access, reach, loads and lifting arrangements are assessed for each job. See HIAB and lorry crane steel delivery.
Tell us about narrow roads, tight turns, restricted access and the space for the lorry, and where the steel needs to end up. We plan delivery around the site and your programme.
We work from engineer drawings and can also carry out site surveys where needed to confirm measurements and access.
We also supply steel beams for loft conversions and basement projects, giving you one reliable supplier for all residential structural steel.
MAH can bring together the services that matter on a residential build, including fabrication, survey, modelling, delivery and erection. The exact scope depends on your drawings, programme and site conditions.
Structural steel fabricationFrom single beams to frames and fabricated steel packages.
Site surveyMeasurements and existing site conditions checked where required.
3D steel modellingDrawings and modelling to coordinate fabrication and connections.
HIAB crane deliveryOur own HIAB-equipped lorries deliver and position steel, even on tight or restricted access sites.
Steel erectionErection and installation support where agreed.
One practical sequence, with people on hand to answer questions. Your structural engineer's drawings guide the steel, and the stages depend on your project and the services agreed with MAH.
Send your drawings or job details, with your requirements, programme and access considerations.
A surveyor-draughtsman can visit site and measure up, or we can work from suitable drawings when a survey isn't needed.
You and your engineer approve the drawings before fabrication starts. The steel is then cut, drilled, welded and finished in our Gravesend workshop.
We plan delivery around the site and your programme, with our own HIAB-equipped lorries able to offload and lift steel where access permits.
Published MAH case studies of residential extensions, with the actual locations and the member of the team who handled each project.
A complete structural steel package for a full house renovation and extension on a restricted residential street, coordinated with the…
Rear extension steelwork for a South East London home: fabrication drawings prepared from the engineer's drawings to fit the existing…
Steel for a South East London residential extension made to the engineer's drawings, after MAH checked the measurements and clarified…
Practical reading on steel for home extensions, how crane lifts are planned for residential steel and how steel reaches tight London streets.
In the world of home improvements, using skilful steelwork to create…
Most residential steel installations only take a few hours on site…
Delivering structural steel across London is rarely straightforward…
When planning a residential extension, steelwork plays a key role in achieving open, durable, and structurally sound designs. This section answers common questions about using steel in home extensions, including typical applications, design considerations, installation processes, and how steel solutions integrate with residential construction projects.
Residential extensions typically use structural steel beams such as RSJs (rolled steel joists), universal beams, and columns, depending on the design requirements. These are selected based on load calculations provided by engineers to ensure the new structure is fully supported and safe.
Yes, we supply and fabricate structural steel for residential extensions across Kent, London and the South East. From small rear extensions to larger wraparound builds, we produce accurately fabricated steelwork to match engineer specifications and site requirements.
We work from engineer drawings and can also carry out site surveys where needed to confirm measurements and access. Each steel component is fabricated with precision in our workshop and quality checked before delivery to ensure it fits correctly and installs smoothly on site.
Yes. MAH works with homeowners, self-builders, builders, developers, architects and trade contractors. You do not need to know all the technical terminology before making an enquiry: the team can talk through the fabrication requirements, what to send and how the steel will reach your property, working alongside your builder and engineer.
Send the details you have. For fabrication and delivery, MAH requires structural engineer General Arrangement (GA) drawings with measurements, so that no key dimensions or details have to be assumed, and the drawings are approved before fabrication starts. If you are still working out what you need, outline the project and the team can talk it through.
Yes. Whether you need a single beam or a full package of steel for an extension, we can supply it, made to your drawings.
MAH's HIAB-equipped fleet gives us options for lifting steel over buildings and into rear gardens, with crane options up to 30m reach, subject to site conditions and safe lifting requirements. Vehicle access, reach, loads and lifting arrangements are assessed for each job.
Send your drawings and site details, or call if you need advice about steel, delivery or access. Builders and self-builders welcome.
WHY MAH STEEL?
6,355+
3-4
2,500+
20,000+
75
98%
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