A GLENWOOD family has been forced to move from its neighbourhood after constant trespassing and vandalism in the backyard.

For seven years Teagan Baldwin and her husband who have three children under four years have been living in a house which backs directly onto Valentine Sports Park.

The soccer field is privately-owned and managed by Football NSW.

Mrs Baldwin said her family could no longer feel safe in their own backyard as balls are constantly ``flying over the fence''.

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

``I don't mind if they come around to 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,'' she said.

Mrs Baldwin won't let her children play in the backyard as she believes it's 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 ball hits 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 when we were out in the backyard.''

The Baldwins have called the police who advised them to make the fence taller.

``We have had enough and we want the park closed.'' they 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 definitely be moving. We are fed up.''

A Football NSW spokesperson said: ``We do what we can for the residents and community.

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

The spokesman said Football NSW had built a four metre by 18 metre mesh fence to reduce balls going over the fence and put signs around the park asking users to respect residents .

Football NSW has plans to move from the park to Riverstone West and build a $40 million sporting complex due to be completed in 2011.

In the interim, it will move to Norwest in Columbia Court towards the end of the year.

Blacktown Council said the park would be developed for houses and a small passive reserve.