Built Right.
Built to Last.
JM Construction delivers high-quality new builds, extensions, and refurbishments for domestic and commercial clients across Pembrokeshire. No sub-contracting, no shortcuts — just solid workmanship from start to finish.
Construction Services Built for You
Whether you're planning a new home, an extension, or a full commercial refurbishment, JM Construction has the expertise and team to deliver to the highest standard.
New Builds
From foundations to final fix — we project-manage and construct new residential and commercial properties to the highest specification.
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Maximise your existing space with a high-quality extension. Kitchen extensions, rear extensions, loft conversions — we handle it all.
Find Out MoreRefurbishments
Breathe new life into tired properties. Full internal and external refurbishments completed on time, on budget, and with minimal disruption.
Find Out MoreCommercial Works
Trusted by local businesses across Pembrokeshire for commercial builds, fit-outs, and refurbishments delivered to strict deadlines.
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Local Builders. Real Results.
JM Construction is a Pembrokeshire-based building company with a reputation built on quality, reliability, and honest communication. We serve both domestic and commercial clients, taking on projects of all scales across the county and into South Wales.
We don't sub-contract our core work. Every project is managed directly by our team, which means better oversight, better quality, and a single point of contact from first conversation to completion.
- Fully insured and compliant
- No hidden costs — clear and transparent quotes
- Dedicated project management throughout
- Proven track record across Pembrokeshire
Our Simple Build Process
From first enquiry to final handover, we keep things clear, communicative, and stress-free.
Get in Touch
Tell us about your project — size, timescales, and any specific requirements. We'll arrange a convenient time to visit and assess.
Free Quotation
We'll provide a detailed, no-obligation quote with transparent costings. No jargon, no surprises — just a clear breakdown of the work.
We Get Building
Once agreed, work begins. You'll have a dedicated contact keeping you informed throughout, with regular progress updates.
Final Handover
We complete a thorough snagging check before handing over your finished project — to our standard, not just the minimum requirement.
Trusted Across Pembrokeshire
Awesome work, awesome service, couldn't be happier. Jon is a perfectionist and from the outcome of his work shows he takes great pride. Will be having Jon again for all building services.
Jon & PJ have just completed a small extension to the back of my house. They were good time keepers, efficient, friendly and the house was always clean at the end of the day. Their work is immaculate and I would highly recommend JM Construction for any type of building work.
Quality work at a competitive price from friendly and trustworthy builders. Really pleased with the quality of work on our extension which has been completed within our budget and on time.
Based in Pembrokeshire,
Serving South Wales
JM Construction is based in Pembrokeshire and regularly works across the county and into Carmarthenshire and wider South Wales. If you're unsure whether we cover your area, just give us a call.
- Haverfordwest
- Tenby
- Pembroke & Pembroke Dock
- Milford Haven
- Fishguard
- Narberth
- Carmarthen
- And beyond