Gondar Gardens Covered Reservoir

The rectangular site contains the redundant brick-built reservoir, a third of which is above ground and grassed over; apart from a strip of land fronting Gondar Gardens the reservoir is bounded by the backs of Victorian or Edwardian houses and mansion flats. When the site was originally purchased for the new reservoir, the surrounding area was mainly open farmland; part of the site was reserved for building a second reservoir at a later date, but this was never constructed, The Victorian reservoir, completed in 1874, was used to store potable drinking water. However, in the 1990s Thames Water made the decision not to upgrade the reservoir and instead built a new facility at Dollis Hill,. This led to use of Gondar Gardens Reservoir being discontinued in 1997 and it was eventually decommissioned in 2002.

The site was recognised in LB Camden's Local Plan as Private Open Space and as a Site of Nature Conservation Importance, the only known location in Camden for slow-worms. There are small areas of woodland, mostly sycamore and ash, plus hawthorn and plum on the slopes at the eastern and western ends. Described as a 'green lung of high environmental value' (Camden Planning Inspector) the site provides views which 'constitute a considerable public asset' (Camden Planning Inspector 2005). In 2015 it was included as a non-designated heritage asset in Camden's Local List as a 'Natural Feature or Landscape'.

Linden Wates (West Hampstead) Ltd purchased Gondar Gardens Covered Reservoir in 2010, and a planning application for a scheme for 28 housing units has been submitted, which preserved much of the site as a nature reserve that would be managed by a body such as London Wildlife Trust. The developers have removed trees on the street frontage and erected hoardings.