<|start_header_id|>assistant<|end_header_id|> Here is a summary of the property description in a single paragraph: Located in the Hertfordshire countryside, just a 10-minute drive from the A10 and sought-after villages, "Arches Hall Mews" offers a unique off-plan development opportunity. The existing barn, surrounded by a stud farm equestrian complex, has been granted planning permission to be converted into three separate dwellings. The three units, ranging from 1,549 to 1,614 square feet, offer a mix of three bedrooms, en-suite bathrooms, utility rooms, and open-plan living areas. Each unit will have allocated parking for two cars and its own outside amenity spaces and ecology zones. The development is expected to be completed by December 2024, offering a rare chance to own a piece of countryside property with a unique equestrian complex nearby.