Teagan Baldwin and her husband, who have three children under four years, have been living for seven years in a house backing directly on to Valentine Sports Park.

The park is privately owned and is managed by Football NSW.

Mrs Baldwin said her family no longer felt safe in their own backyard as sports balls were ``constantly flying over the fence''.

``The balls are always coming over and people are jumping over my back fence to get their balls,'' Mrs Baldwin said.

``I don't mind if they come around the front door and ask for their ball back, that's fine, but they are jumping over to my property, wrecking my plants and trees and my property.

``There's no way they have any right to jump my back fence it's trespassing.''

Mrs Baldwin won't let her children play in the backyard as she believes it is too dangerous.

``The balls are coming over with such force and they have hit me while I am hanging the clothes on the line,'' she said.

``Imagine if the balls hit a child.

``We've had our outdoor furniture smashed one night when we were out and just last weekend, young teenagers kicked our back fence in and our neighbour's fence when we were out in the backyard.

``We had to get it fixed with planks of wood.''

The Baldwins have called local police who advised the Baldwins to extend the height of their fence.

``We have had enough and we want the park closed,'' Mrs Baldwin said. ``It's not just the players from local sports teams but kids playing as well. Even adults. Not one of them has respect and there's even late-night parties going on in the park.

``We will be definitely moving we are fed up.''

A Football NSW spokesman said: ``We are here for the residents and we do what we can for them and the community.

``Residents that have built in this area knew there was a football field already there and they needed to accept the fact that this [balls over the fence] will happen from time to time.''