Happisburgh Manor including two summerhouses

Happisburgh Manor, which includes two summerhouses, is a house that was later used as a restaurant and country club. It was built in 1900 by Detmar Blow for the Cators, a local Roman Catholic family. The building is designed in the Vernacular Domestic Revival style and constructed from pebble flint and chert, with brick and tile dressings and thatched roofs. It features a butterfly or X plan and has two storeys plus attics.

The entrance front has a central single-storey gabled porch with an oak door set under a lintel made of Roman tiles, flint chequerwork, and brick. On either side of the porch are five-light leaded casements, and there are two dormers on the first floor beneath eyebrow thatching. A central two-storey gabled dormer with brick diaper is flanked by gabled wings at the north-west and south-west, each containing a single four-light casement on the ground floor, a three-light casement on the first floor, and a three-light attic floor casement. The building features brick quoins, an attic floor platband, and tumbling. Purlin irons with the lettering "AVE MARIA STELLA MARIS" are present on all gables. The returns of both south wings on the entrance front have one casement on the ground floors and two on the first floors, with gabled roofs and two dormers below eyebrow thatching. The roof is adorned with a forest of romantically placed stacks.

Inside, there is a central panelled room with a fireplace decorated with a coat of arms, the date 1900, and a motto. A similar panelled room is located in the south-west wing. There are stone stairs leading to the south, and between the south wings is a quadrant flint and brick wall. A quadrant single-storey service block with a brick stack is situated between the north wings. At the north-east and south-east corners, there are two flint and brick summerhouses with hipped roofs, which are attached to the encircling wall and linked to the house.

St Mary’s is noted as the first "fully-worked" example of the four-wing butterfly plan house and has influenced architects such as Prior and Lutyens.