Gibbs' final addition to Tyntesfield was added between 1872 and 1877, when he commissioned Arthur Blomfield to add a Gothic chapel to the north side of the house. Modelled on the Sainte-Chapelle in Paris, it housed an organ by William Hill & Sons, and below a vault in which Gibbs intended to be buried. However, combined opposition from both the vicar of the local All Saints Church, Wraxall and the church's patron, a member of the Gorges family, led to the Bishop of Bath and Wells decreeing that he would not sanction the consecration of Tyntesfield's chapel, through fears that it would take power away from the local population fully into Gibb's hands. Despite this, the chapel formed a central part of life at Tyntesfield, and prayers were said twice-daily by the family and their guests. Throughout their period of residence, the family would also open the chapel to local people on an annual basis, often during Rogation days and at Christmas. In praise of the resultant final building, Yonge described the chapel as the final completion of the Tyntesfield project, providing "a character to the household almost resembling that of Little Gidding". The Little Gidding community in Huntingdonshire was much idealized by 19th-century Anglo-Catholics.
