Loft conversions & extensions, built properly
Loft conversions, house extensions, garden rooms and garage conversions from a family-run, fully insured builder covering Altrincham, South Manchester and North Cheshire. Owners on every job, managed start to finish to Building Control sign-off.
- Fully insured
- FMB member
- Family-run
- 25+ years combined experience
Family-run, fully insured and hands-on
A family-run building company based in Altrincham, specialising in loft conversions, house extensions, garden rooms and garage conversions across South Manchester and North Cheshire. With 25+ years of combined construction experience, the owners run every project hands-on — honest advice, clear communication and high-quality workmanship, managed start to finish.
Our services
From a loft conversion or garage conversion to a full house extension or bespoke garden room — the same hands-on, family-run standard and tidy site on every project.
Loft Conversions
Dormer, hip-to-gable and Velux loft conversions, managed from a free survey through to Building Control sign-off.
House Extensions
Single, double-storey and wrap-around extensions — foundations to finish, brickwork matched to your existing home.
Garden Rooms
Solid, insulated garden rooms designed for year-round use — quality materials and a build that lasts.
Garage Conversions
Turn an underused garage into a warm, usable room — insulated, finished and signed off by Building Control.
Loft conversions & extensions, built properly
A family-run builder covering Altrincham and South Manchester — honest advice, owners on every job and high-quality workmanship managed start to finish.
Simple from survey to sign-off
From the first survey to Building Control sign-off, the process is straightforward — honest advice, clear communication and quality workmanship throughout.
- 01Home survey & feasibilityWe visit to assess the space and give honest advice on what’s realistically possible.
- 02Design, drawings & approvalsDrawings and planning advice where needed, then an agreed layout, specification and clear price.
- 03Construction phaseOur own team builds the project hands-on, managed start to finish with a tidy, considerate site.
- 04Handover & sign-offWe finish the space, walk you through it and see it through to Building Control sign-off.
I would like to take this opportunity to express my appreciation for the excellent work Cube carried out on the loft conversion we had in 2020. I have been delighted with the quality of work and the reliability of the team at Cube. You have done an excellent job within the budget and to schedule, even in the winter months. I’d highly recommend you to anyone thinking of having an extension or loft conversion.
Tips & recent posts
Thinking about a loft, extension or garden room?
Tell us a little about your project and we’ll arrange a free site survey and a clear, no-obligation quote.
Contact Us
Request a quote
Tell us what you need and we'll get back to you as soon as we can.
Let's talk about your project
Get in touch for a free, no-obligation quote. We're happy to talk through options and timescales.
Why choose us
- Fully insured & guaranteed work
- Free, no-obligation quotes
- Tidy and reliable tradespeople
- Clear, upfront pricing