Executed with Ground-Up Precision
View our completed residential extensions, structural groundworks, and premium paving across Somerset. Every project is managed and built directly by M. J. Harris.
100%
owner-operated
Laser
leveled precision


From Sub-Base to Surface
What goes underground matters just as much as the masonry you see. We personally manage every phase of excavation, drainage, and concrete pouring to ensure your extension stands on a flawless structural foundation.
By bypassing sub-contractors and sales reps, you maintain a single point of contact on site. This ensures clear communication, precise levels, and zero compromise on materials.






Our Completed Work
A selection of residential extensions, premium driveways, and structural groundworks completed across Bristol and Somerset.
Client Feedback
M. J. Harris completed our extension foundations on schedule. Having one person operate the excavator and lay the brickwork kept the site incredibly clean and organized.
David L., Bristol Homeowner
The sandstone patio is absolutely flawless. Honest pricing, realistic timelines, and direct daily communication on site made a massive difference to our landscaping project.
Sarah T., Somerset
Excellent drainage work and concrete base preparation. He gave us a straight answer on costs and stuck to it. A highly reliable local builder.
James R., Landlord
Discuss Your Project
Arrange a no-obligation site assessment and receive a transparent, fixed-price quotation directly from the builder.
M. J. Harris Building & Groundworks
Home-Our Work-Contact
Direct Line
01737 777 1234
enquiries@mjharrisbuilder.co.uk
Serving London and the South East
Mon - Sat: 07:30 - 18:00
© 2026 M. J. Harris Building & Groundworks-Owner-operated and direct-to-builder.
Laser-leveled foundations. Ground-up precision.
