Accrington Sea Cadets face being made homeless if a Clayton-le-Moors development goes ahead.
And there are fears that the development could mean the end of the Sea Cadets in Accrington altogether.
The charity-run group is appealing for help in finding new headquarters after plans to redevelop its home of more than 30 years at Enfield Wharf were submitted last month.
Accrington Sea Cadets vice-chairman Stephen Hutchinson said: "We’re in a building that’s come to the end of its lease, it’s rented from British Waterways. If the redevelopment goes ahead we are effectively homeless."
The multi-million pound plans to create more than 100 new waterside homes in Clayton-le-Moors involve redeveloping and building an access tunnel through the Sea Cadets’ 200-year-old grade II listed headquarters.
Private landowner Gerry Holmes and British Waterways submitted the application for the development last month, which would consist of 96 three or four-bedroom homes, 24 one or two- bedroom flats and eight ‘live and work’ units.
Stephen Hutchinson said: "The council is trying to be helpful but we do need to find somewhere to relocate to. We’re talking to see if there are any recently-vacated council properties.
"We’d be very disappointed to have to move if it goes ahead. We’ve been here for 50 years, we’re a very long- lived organisation. We’re a charity, no one’s paid for the work we do down there." Accrington Sea Cadets is for children between 10 and 18 years of age and the building is the Sea Cadets’ Hyndburn headquarters.
Mr Hutchinson said: "It’s mainly naval-based training, but it’s also about bringing kids up in a respectable manner. If we lose our headquarters there and if we are homeless eventually we may have to close down and kids will be left with nowhere to go and nothing to do."
He appealed to anyone who may be able to help the group in their quest to find a new home.
He said: "We’re not against progress and the building of new properties but we don’t want it to be at our expense. We’d like to continue what we’re doing. We can’t just dig out £200,000 and go and buy a new headquarters.
"If there are any benefactors out there who can provide us with any money or a new home, now is the time for them to come forward. I’m trying to raise awareness that we are a community-based organisation that could be lost."
A council spokesperson said: "Given the facilities the Sea Cadets want, the opportunities to assist are always going to be limited.
"They are a fantastic organisation as they do a lot of good work with young people in the area.
"We have previously offered to look at buildings such as the stables next to Haworth Art Gallery and Mercer House, but neither of these have been suitable for the Sea Cadets’ needs.
"We have no further options at the present time but we remain willing to work with the Sea Cadets."
Ian Sprott, development surveyor, at British Waterways, said: "The Sea Cadets currently lease the former stable block at Enfield Wharf from British Waterways.
"A number of meetings have been held with the Sea Cadets since 2006 and recently they were invited to the public consultation to keep them advised of the proposals for the re-development of the area known as the Clayton Triangle.
"This area includes the building they currently occupy. In order to fully utilise the open area of land adjoining Blackburn Road, the architects have opened up one of the existing arches in the building to allow an access through the building.
"This proposal would mean that the building would be unsuitable for use by the Sea Cadets. Representatives of the Sea Cadets have met with Hyndburn council who have identified a number of possible alternative premises within the Hyndburn area."