I have been asked to research architectural guidelines used by Diocese and Archdiocese in the USA. At the Archdiocese of Atlanta, we have a Pastoral Review of church sanctuary spaces but no overall guidelines that address church style, size etc.
If your diocese has guidelines that you could share, I’d be very appreciative.
I can highly recommend Catholic Church Architecture and the Spirit of the Liturgy
Book by Denis Robert McNamara for Church Styles and overall design in relationship to the Liturgy.
David B. Meleca, FAIA, NCARB
Director of Classical Design
Moody Nolan