Clerics who in oratories which are in houses offer the Holy Mysteries or baptize, we decree ought to do this with the consent of the bishop of the place. Wherefore if any cleric shall not have so done, let him be deposed.
Ancient Epitome of Canon XXXI.
Thou mayest not offer in an oratory in a private house without the consent of the bishop.
On this whole subject the reader is referred to the curious and most interesting volume published by Venantius Monaldini of Venice, in 1765. I cannot better give its scope than by copying out its title in full.
Commentarius Theologico-canonico-criticus De ecclesiis, earum reverentia, et asylo atque concordia sacerdotii, et imperii, auctore Josepho Aloysio Assemani. Accesserunt tractatus cl. virorum D. Josephi de Bonis, De Oratoriis Publicis; ac. R.P. Fortunati a Brixia De Oratoriis Domesticis, in supplementum celeberrimi operis Joannis Baptistæ Gattico De Oratoriis Domesticis, et usu altaris portatilis.