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Enquire about featuring →A leading loft conversion and home extension specialist with over 22 years' experience, covering Whitchurch, Llanishen, Heath and North Cardiff — a genuinely local independent.
A premier loft conversion specialist operating across Rhiwbina, Whitchurch, Llanishen and North Cardiff, managing the full conversion process — a genuinely local independent.
A domestic building firm completing loft conversions, home renovations and house extensions across Cardiff including Whitchurch, Heath and North Cardiff — a genuinely local independent.
A Cardiff building firm offering fully managed loft conversions, cladding and roofing across Whitchurch, Llanishen and North Cardiff — a genuinely local independent.
A Cardiff loft conversion company offering loft conversions and renovations across North Cardiff and South Wales — a genuinely local independent.
How we chose the top 5 builders in North Cardiff
Every business on this page earned its place through independent research. We look at where companies rank organically on Google, the volume and quality of their reviews, ratings and verification across platforms like Checkatrade, Which? Trusted Traders and TrustATrader, relevant trade accreditations, and the kind of word-of-mouth and social proof that's hard to fake. No business can pay to appear in this organic Top 5 — the list is earned and reviewed regularly.
If you're comparing builders in North Cardiff, any of the five above is a sound starting point. We'd still recommend getting more than one quote and confirming current availability and accreditations directly with the business before you book.
Finding a good builder in North Cardiff
North Cardiff has a healthy mix of independent tradespeople and small local firms, and as anywhere, quality varies. Every business on this page earned its place through independent research — online reputation, verified reviews, local trading evidence and professional credentials — and none of them paid to appear.
Building work is the biggest investment of any trade here, so look for a builder registered with a recognised body such as the Federation of Master Builders (FMB), fully insured, and able to show recent projects and references. Always get a detailed written quote and a clear schedule.
What do North Cardiff builders cover?
Most builders in North Cardiff also cover Llanishen, Lisvane, Thornhill, Heath, Birchgrove, Rhiwbina, Whitchurch, Llandaff North and Tongwynlais. Coverage varies by business, so it's always worth confirming your postcode when you make an enquiry.
Typical jobs include extensions, renovations, new builds and structural work — and most offer free quotes for larger work.
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