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Loft Conversion St Albans
Loft Conversion in Welwyn Garden city
Loft Conversion in welwyn garden city
Loft Conversion and Extension in Hertfordshire

Welcome to Reservoir

Making Your Vision Become A Reality

Loft Conversion in Barnet

Our Story

Professional & Reliable

Looking for a loft conversion in London, Hertfordshire, Bedfordshire and Essex? We are the company you can rely on to get the job done efficiently and at the highest quality. We also specialise in bespoke  Extensions, Garden Rooms, and general building work. Our team of talented experts that share over 20 years of experience and knowledge to provide you with the best quality service in these 4 areas. We take pride in our work - our builders are highly skilled and aim for 100% satisfaction by our clients. Contact us to discuss your options and get a free quote!

Loft conversion and Extension welwyn garden city


What We Offer

L shape loft conversion in St Albansl
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garden room in Stevenage
House Extension in Enfield

L-Shaped Loft Conversion

Hip-to-Gable Loft Conversion

Rear Dormer Loft Conversion

Garden Rooms


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Contact Us

Harry Blackmore

Loft conversion and Extension specialist in Hertfordshire, North London and Essex



Harry and his team recently completed our roof light conversion, which has totally transformed the house.   Work was completed within only four weeks despite the impact on the recent poor weather!  The whole team are really great to work with: friendly, trustworthy, professional, prompt and always cleaned up afterwards.  The electrician provided energy saving advice regarding heating the loft, which is most helpful in this current climate.   Harry was able to provide any advice including choice of velux and ensuring everything went smoothly including snagging issues. The overall cost was reasonable and I would personally  recommend them. 


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