Vale Mill in Guernsey, a historic windmill that later served as a Second World War German lookout tower, has been listed for sale at a guide price of £2.95 million. Standing 69 feet (21 metres) tall in the parish of Vale and now renamed The Lookout, the granite building is visible across the island. Planning permission has already been secured to convert it into a striking modern home, making it a rare redevelopment opportunity. The tower stands beside a water-filled quarry, and the sale offers a piece of island heritage and an approved blueprint to bring it back to life.
How a wooden windmill built in 1770 became a granite landmark and a wartime lookout post
Savills Guernsey said the original structure was built from wood in 1770 before being rebuilt in granite in 1854. It worked as a flour windmill until the German occupation of 1940, when it was turned into an observation tower. The States of Guernsey, the island’s government, was gifted the building in 1968. It sold the mill into private ownership 40 years later, after the structure had fallen into disrepair.
Inside the approved plans, four bedrooms, an underground extension and a floating summer house
The planning consent, granted in 2020 for the protected building, covers a six-floor, four-bedroom home with a kitchen and dining area, a utility room and a breakfast room. It also includes an observation deck, a terrace, garaging and a substantial basement extension that cantilevers out over the quarry.That extension would be built within the quarry’s rock face and designed to blend with the mill, with large windows opening onto a balcony deck. An underground link beneath the driveway would join it to the tower. A walkway would lead from the main house towards a floating summer house. The top two former German observation levels could become offices or entertaining spaces.
Image: Saville
The open market rule that lets British passport holders purchase the mill
The property is available through Guernsey’s open market, so it can be bought by anyone with a British passport or the right to reside in the United Kingdom. It is the first property to qualify under a new rule for exceptional circumstances, introduced in 2025. The island’s Committee for Housing gave it an open market listing in principle because of its cultural importance. The tower will be fully inscribed on the open market register only once the development is completed in line with the approved planning permissions. Local market homes make up most of Guernsey’s housing and are reserved for people with a local licence or the right to work on the island.Deputy Sasha Kazantseva-Miller, vice president of the Committee for Housing, told the BBC that members wanted to encourage new homes while preserving buildings that form part of the island’s historic and cultural heritage. She added that the in-principle approval should help bring in the significant investment a property of this nature requires.Nick Paluch, a director in the residential sales team at Savills Guernsey, said the sale represents a rare opportunity. He described the mill as a landmark that offers the kind of diversity the island needs to keep attracting new investment, and as a chance for a buyer to create a top-quality home in the spirit of the television series Grand Designs.
Restoration work completed so far and views the mill’s owners say are the best on the island
James Ridout, director of Vale Mill Limited, said his father bought the building at auction in 2008 with a business partner. Ridout has since restored the tower to prepare the site for further development. The work has included repointing the stonework, making the structure wind and watertight, adding staircases, and clearing and landscaping the land around the quarry.Ridout also told the BBC that without the listing, further investment was unviable and the building risked falling into disrepair again and possibly being “permanently lost”. He described the views from the top of the tower as “the best in Guernsey”, with the sea visible for miles around.
Demand for Guernsey property remains strong, with buyers drawn to the lifestyle and business links
Paluch said Guernsey continues to attract would-be buyers and that activity has been strong since the start of 2026. He pointed to the island’s scenery and outdoor lifestyle, its growing reputation as a centre of excellence for business and finance, and its strong community. He also cited good schools, low crime rates and a favourable tax regime.