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01923 266336

Pentwyn Builders aim to deliver a quality, professional service at the right price. If you are looking for a reliable professional builder to extend or undertake refurbishment in your home or convert your premises to or from an office to residential we can help.



We turn up when we say we will.


We pride ourselves on the standard of our workmanship.


You can rely on us. We provide detailed quotations.


bulletpng New Builds

  • Design & Build
  • Architectural services
  • High standards of construction
  • Smooth process from start to completion

bulletpng Renovation

  • Office conversions
  • Office refits
  • Air-conditioning
  • Dilapidation works

bulletpng Home Extension

  • Heavy steel box frame extensions
  • Garden room & Conservatories
  • Steel work support
  • Bespoke extension solutions

bulletpng Open Plan Living

  • Room and area division
  • Flooring variations
  • The use of lighting
  • Creative use of limited space

Building and refurbishment work carried out across Hertfordshire and surrounding counties:


Watford and Bushey, Kings Langley, Chipperfield, Sarratt St Albans, Rickmansworth and Chorleywood, London.