It began when a metre-high retaining wall started crumbling between two holiday homes in Kurrawong Avenue.

Neighbours approached by the Nota said they knew little of the drama.

The court heard Andrew and Julie Hill noticed neighbours Anita and Alan Higgins' retaining wall had developed a slight lean and was encroaching onto their property.

When approached about it, Mr Higgins apparently told Mr Hill he did not intend to do anything about the wall "until it fell over".

The Higgins then erected a high timber-paling fence parallel to the boundary between properties.

The boundary dispute is still to be resolved after three years of legal proceedings.

In August 2009, Mr and Mrs Hill took their neighbours to court claiming they had encroached upon their property, trespassed and created a nuisance.

The case went to the Supreme Court after the Higgins did not remove their retaining wall, despite being ordered to do so by the Great Lakes Council.

A spokeswoman for the council said no-one could comment on the matter as it was still before the courts.

Justice Harrison, of the NSW Supreme Court, passed a judgment on the trespass claims in March this year with a verdict that the Higgins were to pay the Hills $22o.

"I am not comfortable with the idea that litigation for the sake of it is socially or morally defensible, particularly having regard to the increasing calls on this court's resources," Mr Harrison said during the case.

In June, Justice Harrison ordered Mr and Mrs Higgins to pay Mr and Mrs Hill's costs of the proceedings up to May last year.