Porthmadog House is a replacement private residence set into a steeply sloping coastal site in rural North West Wales. Exposed to Atlantic weather systems and strong prevailing winds, the site also enjoys expansive views across the bay to the Irish Sea, alongside more contained views inland towards the estuary and the mountains of Snowdonia. The architecture responds by balancing openness to the landscape with shelter, protection and long-term resilience.
The house is conceived as a composition of layered volumes that negotiate between exposure and enclosure. Two Welsh slate-clad elements are embedded into the slope at ground level, forming a robust base that anchors the building within its setting and creates a sense of refuge from the coastal climate. Above, a lighter corten steel volume spans across the slate base, hovering over sheltered external spaces and framing outward views. The contrast between heavy and light elements establishes a clear architectural hierarchy and defines the overall form of the house.
The architecture is intended to be experienced as a sequence of protected and open conditions. Sheltered spaces offer retreat and privacy, while more outward-facing rooms engage directly with light, views and weather. Carefully positioned glazing frames specific moments in the landscape rather than uninterrupted panoramas, supporting a measured and inhabitable relationship with the surroundings.
Material selection is integral to the project’s concept. Locally sourced Welsh slate and corten steel reference the region’s geological and industrial heritage, while their durability and capacity to weather naturally make them well suited to the exposed coastal environment. Constructed by local trades, the house is rooted in its setting both materially and socially, allowing it to age gracefully and establish a lasting relationship with place.