Plans have been submitted to convert offices in Mill Lane, Uckfield, to six flats.
The offices are spread over three floors in Quarry House with the River Uck running parallel to the building.
Few details are contained within the planning application submitted by Mr Robin Marten, of Framfield Place, Uckfield.
A flood risk assessment says historical records show the area has suffered from flooding from fluvial flood sources (groundwater, sewer failure, or overland flow/surface water flooding), but it notes that while the area around the site was affected during major floods in 1974 it wasn’t in the year 2000.
The assessment says the site has a medium/high risk flood risk profile on the ground floor.
The first and second floors though would be above extreme flood level and an escape route to higher ground is available should the residents require to leave.
The report recommends that for all three floors flat owners are registered with the Environment Agency for flood warnings.
The report says: “It is evident that the flood water in both the 100 year + Climate Change and 1000 year storm will flood Mill Lane outside the property, but will be shallow enough to walk through to escape to higher ground.
“The fence alongside the main river will aid in avoiding any chance of stepping into deep water.”