The 10 Best Builders in Ystradgynlais 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. Caimason Building Services Ltd is a residential building contractor based in Ystradgynlais, covering South Wales with a focus on high-end construction work. The company, whose directors bring a combined 35 years of const

    4.9★ (15 reviews)3 public profile linksclaimed by its owner
    4.9★
    15 Google reviews

  2. R L Rees Ltd is a builder in Ystradgynlais, rated 5/5 from 57 Google reviews. Registered with Companies House (no. 08837949) and currently active. Established Google Business Profile with 57+ customer reviews.

    5.0★ (57 reviews)3 public profile links
    5.0★
    57 Google reviews
  3. 4.8★ (18 reviews)3 public profile links
    4.8★
    18 Google reviews

  4. Watts Brickwork is a builder in Ystradgynlais, rated 5/5 from 4 Google reviews. Registered with Companies House (no. 06278869) and currently active.

    5.0★ (4 reviews)3 public profile links
    5.0★
    4 Google reviews

  5. Pearsons Windows & Doors is a builder in Ystradgynlais, rated 4.9/5 from 26 Google reviews. Verified Google Business Profile.

    4.9★ (26 reviews)
    4.9★
    26 Google reviews

  6. CME Developments Ltd is a builder in Ystradgynlais, rated 4.8/5 from 18 Google reviews. Verified Google Business Profile.

    4.8★ (18 reviews)
    4.8★
    18 Google reviews

  7. Riverside Gallery is a builder in Ystradgynlais, Wales. Registered with Companies House (no. 07464489) and currently active.

    3 public profile links

  8. Just In Time Ltd is a builder in Ystradgynlais, rated 5/5 from 2 Google reviews. Registered with Companies House (no. 15526890) and currently active.

    3 public profile links

  9. Cribarth carpentry is a builder in Ystradgynlais, rated 5/5 from 1 Google review. Registered with Companies House (no. 17065396) and currently active.

    3 public profile links

  10. Tawe Interiors Ltd is a builder in Ystradgynlais, Wales. Registered with Companies House (no. 15327804) and currently active.

    3 public profile links

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