Built on Craftsmanship
and Straight Talking
We’re a family-run building firm from Chesterfield. No subcontractors, no salespeople, just skilled tradesmen who take pride in doing the job right.
Started with a Toolbelt and a Reputation to Build
Gaz is a fully time-served bricklayer, not a project manager who came up through an office. He spent years working across Chesterfield and Derbyshire before setting up GSM in 2018, having watched corners get cut and customers get let down by firms that cared more about turnover than the work.
GSM started as a one-man operation doing extensions and renovations around Chesterfield. Word spread fast. The team grew, the vans multiplied, and the phone hasn’t stopped ringing since.
Today we cover everything from a single roof repair to a full property transformation, always with the same principle Gaz started with: turn up on time, do it properly, and leave the site cleaner than you found it.
- £5m public liability insurance, fully covered on every job, no exceptions.
- Gaz is still on tools, still answering the phone, still the name behind every job.
- No subcontractors, every person on your site is part of the GSM team.
- All trades in-house, one point of contact, start to finish.
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One Team. Every Trade. Zero Finger-Pointing.
Most builders will hand you off to someone else the moment the job moves outside their wheelhouse. You end up coordinating three different tradesmen, chasing availability, and taking responsibility for gaps between them.
GSM is different. We’re joiners, plasterers, bricklayers, landscapers, and roofers, all in the same team, all managed by us, all answerable to you.
- One quote, one point of contact: no more chasing three different tradesmen for one project.
- Trades coordinate themselves: no gaps, no delays caused by someone waiting on someone else.
- Consistent quality control: Gaz signs off every stage, every time.
- Project managed end-to-end: from the first site visit to the final snag check.
- Warranty backed: we stand behind our work. If something’s not right, we fix it.
From Extensions to Driveways, We Do It All
Twenty-plus services, one reliable team. Whatever your project, we’ve done it before, and we’ve done it well.
Construction
Extensions, loft conversions, garage conversions, full renovations, period restoration and structural steelwork.
View services →Interior
Kitchens, bathrooms, plastering, joinery, bespoke media walls and LVT flooring installations.
View services →Exterior
Roofing, chimney repairs, guttering, fascias, bricklaying and pointing.
View services →Landscaping
Driveways, block paving, patios, garden design, retaining walls, decking and pergolas.
View services →The People Behind Every Job
We’re a tight crew. Everyone you see on site is GSM. No agency workers, no revolving door of subcontractors. The same faces, the same standards, every time.
Every member of the team is personally vetted and trained to the standard Gaz expects on his own home. You won’t meet a cowboy on one of our sites, just skilled, proud tradesmen who want to do good work.
How It Works: Simple as That
No complicated process. No chasing. No surprises. Here’s what to expect when you work with GSM.
Get in Touch
Call us or fill in the quote form. Tell us what you need, big or small, we want to hear it.
Free Site Visit
Gaz or one of the team comes out to take a look. No call centres, no forms to fill in, just a real person who knows what they’re talking about.
Straight Quote
You’ll get a written quote with no hidden costs, no pressure, and a clear timeline. You decide when you’re ready.
Job Done Right
The team arrives on time, works clean, and keeps you in the loop throughout. We don’t leave until the job is finished and you’re happy.
What You Can Count On
These aren’t aspirational values. They’re the things we’ve been held to, and held ourselves to, on every job since we started.
- £5m public liability insurance. Fully insured on every job, from a single roof repair to a full property renovation.
- Time-served bricklayer. Gaz is fully time-served with experience across all trades, not a project manager who’s never held a trowel.
- Trading since 2018. Seven years of completed projects, returning customers and a phone that hasn’t stopped ringing.
- 5.0-star Google rating. 100% of our reviews are genuine, unsolicited, and verifiable.
- No deposit taken upfront. You pay in agreed stages as work progresses, never before.
- Written quotes, not verbal estimates. Everything agreed in writing before we lift a tool.
- All work guaranteed. We return and fix anything that isn’t right, at no cost to you.
- Chesterfield-based, always available. Local, reachable, and we show up when we say we will.
Ready to Get Started?
We work across Chesterfield, Sheffield, Dronfield and the wider Derbyshire area. Call Gaz directly or drop us a message, and we’ll get back to you the same day.