Our Standards

Williams Tarr Construction’s philosophy and core values are service, integrity, good value and high quality.

This philosophy has dictated its high standards for nearly 100 years and is reflected in the number of awards and accreditations achieved by the company.


  • Williams Tarr are members of CHAS, the Contractors’ Health & Safety Assessment Scheme and satisfy the rigorous annual review procedure.

  • Construction operatives on Williams Tarr sites are required to hold valid CSCS cards. CSCS is the leading certification card scheme for individuals working in the built environment. Holding a CSCS card confirms a site worker has the required qualifications and training to carry out the work for which they are employed on a construction site.

  • Williams Tarr Membership No. 2725