ST AIDAN'S Catholic Church will pray for community generosity as it prepares to start its biggest fund-raiser to date.
The Rooty Hill church hopes to raise $300,000 in the next 12 months to extend and refurbish the building to cope with growing demand.
It hasn't had a major upgrade in more than 30 years.
"Numbers of the community coming to the church have increased with the growing medium density development in the area," parish priest Father Alan Layt said.
"There is a lot of need to extend, especially here in Rooty Hill. This church was designed to seat 450 but we're now filled to capacity."
Four masses are held on Sunday to cater for the 1600 people who attend.
"The church was designed to seat 450 people but only seats about 350," Father Layt said.
"We use the foyer as well which could accommodate another 60 or so people.
"Given the times people attend, namely the 9am and 10.30am services are preferred, we suffer serious overcrowding at these two Masses."
St Aidan's Pastoral Parish Council member Anthony Pereira said:
"There are also cracks in the wall and the carpet needs replacing."
The church plans to run an art union lottery with $30,000 in prizemoney.
But first, it needs approval from the Department of Liquor, Gaming and Racing.
It's the idea of Mr Pereira, the managing director of Fundraising For You, a business that provides monetary prizes for fund-raising events for individuals, families and organisations.
"We expect to sell 15,000 tickets at $20 each to raise the $300,000," Mr Pereira said.
The church proposes a $10,000 first prize and four $5000 runners-up prizes..
It's hoped the art union will be launched in June and winners announced in May next year.