MJ Design & Building

Loft Conversions

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Website | 0800 029 3856
19 Copthall Rd E, London UB10 8SD, UK

Opening Hours:
Monday: 8:00 AM – 7:00 PM
Tuesday: 8:00 AM – 7:00 PM
Wednesday: 8:00 AM – 7:00 PM
Thursday: 8:00 AM – 7:00 PM
Friday: 8:00 AM – 7:00 PM
Saturday: 8:00 AM – 7:00 PM
Sunday: 1:00 – 5:00 PM


Area Served:
Within 4 miles (6.4km) of 19 Copthall Rd E, London UB10 8SD, UK
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For almost three decades, MJ Design & Building has been shaping London and its TRUE bespoke homes. Transforming homes using technology and expert designers. We invest locally and build sustainability, connect communities, and create ethical infrastructures.Find Out More

Google Rating: 5.0 out of 5 stars (7 total ratings)

Rangla punjab
5 Star
We have just had our garage converted into a home office and we are absolutely delighted with the results. The team arrived early every day, come snow, rain or shine and transformed the space in double-quick time. Jay(joga) was on site every day either pitching in or checking on the work and now all we have to do it buy desks and move in. Thanks to the team for such a great job. Highly recommended jos MJ DESIGN & BUILDING.
Sunday 2nd April 2023
Ajay Kumar
5 Star
I used to work for this company I gained a lot of knowledge from my boss Mr Jay and my team members he treated all of his builders fairly I had really good experience working for his company.
Tuesday 4th April 2023
Johnathon M
5 Star
Excellent service. We had both homes started again, from demolition to excavation, and now I have sold that property for £10m, thanks to Jay.
Wednesday 5th April 2023
gurtej bains
5 Star
All the boys were professional. They arrived on time, did a fantastic job and cleared up afterwards
Sunday 2nd April 2023
Rajveer Singh
5 Star
Excellent service with good punctuality.
Sunday 2nd April 2023