The 10 Best Builders in Cardiff 2026

Ranked by real customer reviews, listing activity and Companies House registration, from public sources.

How this ranking is calculated

Composite score from public signals:

  • Google Business Profile star rating (when 3+ reviews)
  • Google Business Profile review count (log-scaled)
  • How many public profile links the listing carries: Companies House number, Google Business Profile, other directory profiles the business has supplied, its own website
  • Whether the listing has been claimed by its owner

No business can pay to be listed, and no reviews are fabricated. Placement is influenced by an optional paid Premium subscription, which puts a business ahead of equally-scored rivals here. Premium businesses carry a Premium badge on their own profile page and in our directory listings, but this list does not mark them.

  1. Rise Construction Cardiff Ltd is a builder in Cardiff, rated 5/5 from 18 Google reviews. Registered with Companies House (no. 13963156) and currently active. Verified Google Business Profile.

    5.0★ (18 reviews)3 public profile links
    5.0★
    18 Google reviews

  2. Gentles Construction Ltd is a builder in Cardiff, rated 5/5 from 16 Google reviews. Registered with Companies House (no. 06819668) and currently active. Verified Google Business Profile.

    5.0★ (16 reviews)3 public profile links
    5.0★
    16 Google reviews

  3. Sonabuild is a builder in Cardiff, rated 5/5 from 14 Google reviews. Registered with Companies House (no. 15491958) and currently active. Verified Google Business Profile.

    5.0★ (14 reviews)3 public profile links
    5.0★
    14 Google reviews

  4. Sphinx Constructions Ltd is a builder in Cardiff, rated 4.9/5 from 9 Google reviews. Registered with Companies House (no. 13452848) and currently active.

    4.9★ (9 reviews)3 public profile links
    4.9★
    9 Google reviews

  5. Redwood Construction Cardiff Ltd is a builder in Cardiff, rated 5/5 from 8 Google reviews. Registered with Companies House (no. 09209064) and currently active.

    5.0★ (8 reviews)3 public profile links
    5.0★
    8 Google reviews

  6. Reid Building Limited is a builder in Cardiff, rated 5/5 from 7 Google reviews. Registered with Companies House (no. 13017891) and currently active.

    5.0★ (7 reviews)3 public profile links
    5.0★
    7 Google reviews

  7. FORTY BUILDERS LTD is a builder in Cardiff, rated 4.7/5 from 32 Google reviews. Registered with Companies House (no. 09481445) and currently active. Verified Google Business Profile.

    4.7★ (32 reviews)3 public profile links
    4.7★
    32 Google reviews

  8. TUGWELL MASTER BUILDERS is a builder in Cardiff, rated 5/5 from 6 Google reviews.

    5.0★ (6 reviews)Companies House registered
    5.0★
    6 Google reviews

  9. Camilleri Construction Limited is a Cardiff-based building company, trading since 1985 and registered at Companies House. The firm holds Chartered Building status — a distinction it holds alone among Cardiff building com

    4.4★ (14 reviews)3 public profile linksclaimed by its owner
    4.4★
    14 Google reviews

  10. MCS Construction & Developments is a builder in Cardiff, rated 5/5 from 16 Google reviews. Verified Google Business Profile.

    5.0★ (16 reviews)
    5.0★
    16 Google reviews

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