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Welcome to ALEXDEC

Residential Building Contractor – London

ALEXDEC is a London-based residential building contractor providing complete building services, from structural works through to high-quality finishes.

We specialise in well-managed residential projects across Central and West London, delivering extensions, refurbishments, and complex structural works under one coordinated contract. Our approach is straightforward: clear scope, proper planning, and responsibility taken seriously at every stage of the build.

Many of the projects we undertake go beyond standard building work and involve structural alterations, steel installations, balconies over habitable rooms, and critical waterproofing. These elements require careful coordination, technical understanding, and close attention to compliance — all of which we manage in-house.

We work closely with architects, structural engineers, and Building Control to ensure every project is delivered safely, correctly, and in line with approved drawings and regulations. Whether the work involves a full refurbishment, a structural alteration, or a combination of trades, our focus remains the same: quality workmanship, clear communication, and a controlled process from start to finish.

Our clients value having a single point of responsibility rather than managing multiple contractors. By coordinating all trades under one contractor, we reduce delays, minimise risk, and deliver a more reliable outcome.

If you are planning a residential building project and want it handled professionally — without shortcuts — we invite you to get in touch to discuss your requirements and arrange a site visit.

Call 0207 101 3394 to discuss your project.