Lynn Minster could be in line for an estimated £5 million re-development project over the next five years if new plans come off.
The Rev Christopher Ivory is hoping to further enhance the 11th century church with a major restoration and building project to encourage greater use by the community.
Although plans are at a very early stage, a kitchen and toilets could be added to the building.
There are also plans to promote the church’s history along with vital repair work.
Funding and planning permissions need to be secured for the scheme to go ahead. Lottery applications will be submitted.
The building has already had a number of restoration projects to the organ and doors.
Mr Ivory said: “The church is very much the centre piece of historical Lynn.
“We are moving towards developing the plan. It is going to be a long slow process.”
The church is already well used with good numbers attending the services and summer programme of concerts.
But it only has basic facilities and no toilets so people have to go into the town to use public conveniences.
Mr Ivory said: “The Saturday and Tuesday cafes work very well but the facilities are not the easiest to use.
“We need to have a proper and permanent kitchen area to make that easier.”
A priority for the church will be to repair the south tower. The building is structurally fine but some of the stonework is crumbling after Victorian repairs using Roman cement are starting to fail.
There is a debate about on how best to repair this problem, which could cost about £1 million.
Mr Ivory is hoping funding can be secured shortly.
The church is also looking at ways of promoting the history of the building and the town.
Mr Ivory said: “The western facade of the building is probably unique as it shows the development of ecclesiastical architecture over four centuries.”
A £45,000 project to improve the church’s entrance has been completed.
A step has been removed from the main entrance and a glass door added.
The Victorian doors have been extended and re-hung.
Mr Ivory said: “The doors look wonderful and have come out really well.”
The restoration project will complement plans to give Saturday Market Place and the Town Hall a make-over.
West Norfolk Council and Norfolk County Council are looking to introduce a one-way system along with wider pavements.