ONE of the oldest commercial buildings in Southampton is to be converted into offices and luxury flats.

Grade II listed American Wharf near the bank of the River Itchen in Marine Parade has been disused for years and is the last building in Southampton on English Heritage’s Heritage at Risk Register for which plans have not yet been secured.

Developer Dorepark aims to “breathe new life” into the historic site with its plan for 511 square metres of offices and 23 flats, ranging from a studio apartment to three bedroom lofts.

Previously known as Chapel Steam Mill, American Wharf was first developed in 1781 as a steam mill and bakehouse, supplying ship’s biscuits for the Royal Navy during the American War of Independence.

It was then extended to service the fleet for the Napoleonic Wars, in 1810-1811. Many of the 18th and 19th century elements remain, making it a superb example of the development of a commercial complex during the middle phases of the Industrial Revolution.

The history leaves Dorepark with a design challenge to incorporate historic features such as 19th century cast iron pillars that criss-cross the interior.

Close work with English Heritage has led to what Dorepark is hailing as a “visionary design”, including a light well to channel sunlight into the heart of the building, that secures the building’s future.

Councillor Royston Smith, Cabinet member for economic development, said: “Now that Holyrood Church has been rescued from the Heritage At Risk Register, and a solution has been agreed for Tudor House Museum, American Wharf remained the last building that needed securing.

“Through the visionary concept of Dorepark Limited, and the perseverance of all concerned, we are nearing a solution that shows a clear example of the positive benefits of all parties working together.”

Tim Wild of Dorepark said: “The assistance the Council has shown in recognising the special circumstances and the need to take a holistic cross-departmental view has really helped us to feel confident in driving this forward. In the current economic downturn, such close working is more important than ever.

“We are hopeful that American Wharf will now be preserved to reflect its local significance in British naval history.”