The municipality says a proposal has been submitted to Enterprise Cape Breton Corp., a subsidiary of the Atlantic Canada Opportunities Agency, for half the cost of repairing the 70-year-old structure in Gabarus.
It has also written to Nova Scotia's Infrastructure Renewal Department asking it to conduct an engineering analysis of the wall and contribute the remaining half of the cost of fixing it.
Last year, the province had assessed the cost of repairing the north half of the 400-metre long wall at $600,000.
The municipality, which is offering up $100,000 of its own funds, says a new figure would be determined based on the engineering analysis.
Municipal fire, police and emergency management officials gathered for a public meeting in Gabarus on Thursday to discuss plans in the event of a breach.
Ownership of the crumbling seawall has been in dispute between the federal and provincial governments for several years.
Neither has committed to funding a short-term solution to fix the structure that keeps the punishing waves of the North Atlantic out of the community's small harbour.