Dolphin House and attached outbuildings and wall

Dolphin House, along with its attached outbuildings and boundary wall, is a house built in 1799. It is constructed from coursed and squared granite, featuring an ashlar front and a hipped dry slate roof with symmetrical end stacks made of brick. The house has a double-depth plan, with a rear extension and outbuildings.

The building stands two storeys high with an attic and has a symmetrical front with three windows on the first floor. The windows have flat arches with voussoirs and are fitted with late 19th-century replacement sashes. The ground floor has paired 2/2-pane sashes, and tripartite sashes flank a central 3/3-pane sash. Hipped roof dormers contain horned 2/2-pane sashes. A mid-19th-century front porch features 'picturesque' masonry. The original entrance is a half-glazed six-panel door with a decorative fanlight above. The rear has granite lintels over the sashes, and there is a later small two-storey rendered addition. An extension to the east, made of painted roughly coursed granite, has been incorporated into the main house as a dining room. A sundial dated 1800 is fixed to the east-facing wall of the house.

Inside, the house retains panelled shutters and doors, including a six-panelled door to the rear rooms with a decorative fanlight.

The boundary wall, featuring pyramidal gatepiers, extends along the lane for approximately 50 metres.

Dolphin House was originally built as a Missionary House for the Society for Promoting Christian Knowledge (S.P.C.K.), which had been active in educational and religious work on the Isles of Scilly since the mid-18th century. It was constructed on Town Hill Field in 1799 on land leased from the Duke of Leeds, costing £400, with an additional £200 spent on fixtures and fittings. This complete Late Georgian house holds historical significance within the context of the development of the Isles of Scilly.