Domestic Extensions & Loft Conversions
Add space and value to your home with rear, side and two-storey extensions, plus light-filled loft conversions — fully managed and built to building regulations.
Commercial & Domestic Building Contractors
Building Contractors in the UK & South East England
From home extensions and loft conversions to commercial fit-outs and turnkey new builds — Struxen delivers quality construction across London, Surrey, Kent, Essex and the whole of the UK. Rated 4.9/5 by 127 clients.
- CSCS Approved
- Fully Insured
- NHBC Standards
- UK-Wide Coverage
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Projects Completed
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Years in Business
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Client Satisfaction
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Workmanship Guarantee
Est. 2016 · London
About Struxen
A UK construction company built on trust
Struxen is a full-service construction company delivering commercial and domestic building projects across the UK. For over 10 years we have helped homeowners, developers and businesses turn plans into finished, high-quality buildings.
From a single-storey extension in the Home Counties to a complete commercial fit-out in London, our experienced project managers, skilled trades and certified teams handle every stage — so you get one accountable partner from start to finish.
- CSCS-accredited, fully insured teams on every site
- On-time delivery with a clear, agreed programme
- Transparent, itemised pricing — no hidden costs
- Complete project management and planning assistance
Our Services
Construction services for commercial & domestic clients
Whatever you're building, Struxen delivers professional construction services tailored to your project and budget.
Commercial Fit-Outs & Refurbishments
Retail, office and hospitality fit-outs designed around your brand and workflow — delivered with minimal disruption to your business operations.
New Builds & Turnkey Projects
From residential new builds to commercial turnkey construction, we take your project from bare land to a fully finished, ready-to-use building.
Renovations & Refurbishments
Transform tired properties into modern, functional spaces with full refurbishments — structural changes, finishes and everything in between.
Our Projects
Recent construction work across the UK
A snapshot of the commercial and domestic projects we've recently delivered for clients across London, Surrey, Kent, Essex and the wider South East.
Commercial
Tech Office Fit-Out
London — Full office refurbishment and fit-out for a 40-person tech team.
Domestic
Two-Storey Extension
Surrey — Rear and side extension creating a new kitchen and master suite.
Commercial
Restaurant Fit-Out
Cambridge — Full kitchen and dining-area fit-out for a new restaurant opening.
How We Work
A simple, transparent construction process
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01
Consultation & Survey
We visit your site, understand your goals and discuss budget, timescales and feasibility.
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02
Detailed Quote
You receive a clear, itemised written quote — no jargon, no hidden costs.
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03
Construction & Management
Our team builds to an agreed programme with regular progress updates and site visits.
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04
Handover & Aftercare
We complete a snagging inspection, hand over documentation and stay on call after completion.
Testimonials
What our clients say
Rated 4.9 out of 5 by our customers across the UK.
★★★★★
Struxen extended our family home and we couldn't be happier. Professional from the first survey to the final clean. The team turned up every day and the finish is superb.
★★★★★
They delivered our full office fit-out ahead of schedule and kept disruption to our business to a minimum. Excellent communication and a truly professional team.
★★★★★
From planning permission to handover, Struxen managed our new build completely. Transparent pricing, great trades and a 10-year guarantee gave us total peace of mind.
Questions & Answers
Frequently asked questions about building projects
Home extensions typically cost £1,000–£3,000 per square metre. A single-storey rear extension averages £45,000–£75,000, while a two-storey extension ranges from £80,000–£150,000+ depending on specification and location.
A typical UK loft conversion costs £45,000–£50,000. Velux conversions start around £25,000, dormer conversions cost £40,000–£55,000, and mansard conversions can exceed £70,000.
We cover all of London, Surrey, Kent, Essex and the wider South East of England, plus selected projects across the rest of the UK.
Yes. Every project carries full public liability insurance, all site teams are CSCS accredited, and we work to NHBC standards with a 10-year workmanship guarantee.
Pricing Guides
How much does a build cost?
Real UK pricing for the projects we deliver most, with breakdowns for London, Surrey and the South East.
Areas We Cover
Construction & building services across the South East
We deliver home extensions, loft conversions, commercial fit-outs, renovations and new builds across London and the South East of England. Are you looking for a trusted builder in your area?
Ready to start your building project?
Get a free, no-obligation quote from the Struxen team. We respond to every enquiry within 24 hours.