He served as Commissioner until 1868, when he was succeeded by Sir John Ball Greene CB, who took charge of the ongoing revisions of the valuation on an annual basis. Griffith also served as Chairman of the Board of Works. He conducted two major valuation surveys. First was the townland valuation, which was completed in the 1840s and which took the townland as the geographical unit of valuation. The second and more extensive, was the tenement survey which valued individual property separately for the first time and which also valued all buildings in the townland for the first time, whereas, previously only the larger houses, principally those of the gentry had been valued in the first valuation. The tenement valuations of County Dublin were the first to be published on 5 May 1853 and the last were the valuations of County Armagh on 1 June 1865.