Complex sentence: But masters of late 14th and early 15th centuries had a national profile, and Prophet intended a new Mansion House: an H-Plan layout was sustained for 400 years providing, buttery, pantry, solar, and central hall with extensive accommodation.
Split into simpler sentences: But masters of late 14th and early 15th centuries had a national profile, and a new Mansion House. Prophet's H-Plan layout was sustained for 400 years providing, buttery, pantry, solar, and central hall with extensive accommodation.