A redundant reservoir at Framfield could be turned into a four-bedroom home if a planning application is approved.
The reservoir, in Sandy Lane, has an earth cover and doors and windows would be cut into the mound on each side for access and natural light, according to a statement submitted to Wealden Council with the plans.
An existing vehicle access would be reinstated and upgraded as part of the proposal.
Next to the access, within the south-eastern corner of the plot, would be a courtyard to provide four parking spaces.
A footpath would be created from the courtyard area to the main entrance of the home which would include the four bedrooms and an open plan kitchen/dining and living area.
A design and access statement considers holiday letting and commercial use for the site but says conversion of the reservoir for a “low-key residential use would clearly be the optimum viable use of the site”.
The statement says: “The conversion will retain the inconspicuous presence of the ‘hidden’ structure at the site and subsequently does not seek any overly domesticated works that would detract from the local distinctiveness of the site eg through the installation of a roof and other intrusions into the fabric of the building.
“The residential curtilage has been drawn tightly around the building to avoid the sprawl of domestic paraphernalia.”