Transform Your Home with Expert Extensions
At Reservoir Construction, we specialise in high-quality home extensions across Barnet, North London, Hertfordshire, and Welwyn Garden City. Our fully managed service takes care of every detail - from planning and design through to build and finishing - giving you more space, more comfort, and more value for your property.
A home extension is one of the most effective ways to improve your living space without moving house. Whether you’re adding a kitchen extension, an extra bedroom, or a full two-storey addition, our expert team ensures a seamless process and exceptional results.
Why Choose Reservoir Construction For Your Home Extension?
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Local specialists in Barnet, North London, Hertfordshire & Welwyn Garden City
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Full end-to-end service: design, permissions, construction, finishing
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Skilled team with experience in local planning rules and permitted development
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High-quality craftsmanship with a 10-year workmanship guarantee




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