Update – 12 December 2014
Consent to remove the tree has been refused - see the Notice of Refusal dated 11 December 2014.
 The wording of the notice is slightly surprising: there has not been any suggestion that 72 The Avenue has been damaged at all, which is a stage before trying to link any damage to the tree.  Nevertheless we are pleased with this outcome. 

72 The Avenue, Beckenham – 10 October 2014
We have objected to an application to fell a horse chestnut in the front garden at Sandford Close, 72 The Avenue, Beckenham BR3 5ES. Whilst we are sympathetic to the anxiety suffered by Mr Hilleard and his family on account of not being able to insure their property, 72 The Avenue, against subsidence, we do not see any justification for felling this tree.

See the attached objection.