Nonsuch Park and the Mansion have been managed by Epsom and Sutton Councils through a joint management committee (JMC) since the land was purchased by four councils in 1937 to save it from development as part of the establishment of the Metropolitan Green Belt.
The title deeds to the land are held in trust by Surrey County Council.
The JMC has run the park and Epsom and Sutton Councils have paid for the upkeep of the park with no financial support from Surrey County Council.
In 2007 Surrey County Council rejected a proposal by the JMC to lease out the Mansion House.

At the southern end of the Park there are the concrete foundations of a road abandoned when the Park became Green Belt.
Beyond this is Warren Farm, an open space belonging to the Woodland Trust.
The London Loop goes through Warren Farm and Nonsuch Park.

In the west of the park there is an area, formerly a clay pit as mentioned above, used by the local BMX community containing jumps and trails.
 Locally known as "Devil's Dyke", the area has been used for this purpose for at least 30 years and has, since 2009, had backing from the Nonsuch Park Joint Management Committee.
 The area is now fenced off but is clearly visible from nearby footpaths.
Nonsuch Park and the Mansion have been managed by Epsom and Sutton Councils through a joint management committee (JMC) since the land was purchased by four councils in 1937 to save it from development as part of the establishment of the Metropolitan Green Belt. The title deeds to the land are held in trust by Surrey County Council. The JMC has run the park and Epsom and Sutton Councils have paid for the upkeep of the park with no financial support from Surrey County Council. In 2007 Surrey County Council rejected a proposal by the JMC to lease out the Mansion House.
At the southern end of the Park there are the concrete foundations of a road abandoned when the Park became Green Belt. Beyond this is Warren Farm, an open space belonging to the Woodland Trust. The London Loop goes through Warren Farm and Nonsuch Park.
In the west of the park there is an area, formerly a clay pit as mentioned above, used by the local BMX community containing jumps and trails.  Locally known as "Devil's Dyke", the area has been used for this purpose for at least 30 years and has, since 2009, had backing from the Nonsuch Park Joint Management Committee.  The area is now fenced off but is clearly visible from nearby footpaths.
Nonsuch Park