<|start_header_id|>assistant<|end_header_id|> Here is a summarized version of the property description in a single paragraph: A rare opportunity to design and build your unique custom home in the exclusive Callum Park development is available. The serviced plot, which includes planning permission, utilities, and foundations, comes with estimated build costs for a detached, five-bedroom home with a double garage. Buyers can customize their homes to fit their lifestyle, preferences, and budget, with options to change the interior layout and design. The custom build process is guided by AC Architects and Structures, and buyers can work with preferred contractors or appoint their own. The property is located in the picturesque village of Lower Halstow, offering a tranquil environment, local amenities, and easy access to the M2 motorway and nearby Rainham Train Station. With the option to reserve before December 2024 and pay zero stamp duty, this is an exceptional opportunity to build your dream home.