The venue in Meyrick Road, Sheerness, was given the £3,500 boost by the Queenborough Fisheries Trust (QFT).
It will be put towards refitting the women’s toilets, which is downstairs near the dressing rooms.
Derek Friday of the Sheppey Little Theatre with the toilets that they have obtained a grant to refurbish.
The men’s loos were refurbished a few years ago as part of a major building project, which was also funded by the QFT, when a disabled toilet was installed as well.
Work is expected to start imminently, and it is hoped it will be completed by the middle of next month.
It will include fitting more water-efficient toilets, tiling and a general facelift, as well as an upgrade to the heating system.
Chairman Derek Friday said: “We would like to thank the Queenborough Fisheries Trust very much as it means we can upgrade and get things how we want them to be.
“Although the toilets were all right, once you do something new everything else looks outdated, so we wanted to refurbish them.
Sheppey Little Theatre, Meyrick Road, Sheerness
“We are beginning to get quite busy, and if we can offer people a comfortable seat, an enjoyable event and clean, fresh facilities, they will come back.”
There will also soon be scaffolding around the building so repairs to a leaking roof can be carried out.
Mr Friday said the £4,500 works, which is what the building fund has been for, will include new flashing and cladding being put up. He said: “There is a problem with the flashing, which doesn’t sit right, and it’s coming away, which has been causing water to get in.
“We have got to put scaffolding in a neighbour’s garden and they have kindly consented to us doing that, so we are very grateful to them.”
It is hoped that work will also start very soon and be finished by the end of March.
The theatre has undergone some dramatic work over the past few years, and in 2011 had a £20,000 building project completed which included a two-storey extension to house a green room and an extended foyer.
The next project is to look at getting murals depicting the Island on the front of the building.