TWEED River Regional Museum is getting ready for its $2.85 million expansion and has reached a number of significant milestones this month.
Museum director Judy Kean said museum staff and volunteers had been "beavering" away since March of this year to collate and collect every piece of the museum's collection.
"There are probably about 8000 pieces all up and every single one has to be recorded and stored at the new council storage facility at Murwillumbah's industrial estate.
"Thanks to the consistent hard work of museum staff and volunteers, things are on track to have all collection material safely documented, packed and in storage by the time construction work begins."
Ms Kean said work at the site would start sometime this week with contractors beginning work on a new retaining wall while construction of the new wing was scheduled to start in December.
Funding for the new wing came mostly from Tweed Shire Council which will contribute $2.6 million while Arts NSW donated $250,000 towards the project.
The earliest possible completion date for the building project is the middle of next year with a likely reopening of the museum planned for late 2013 or early 2014.