The Town of Darien took a major step Monday in committing $100 million to buy a prime piece of waterfront real estate.

The Board of Selectmen voted in favor of the purchase of Great Island.

MORE: 'An exciting opportunity.’ Residents weigh in on Darien’s plan to buy Great Island or $100M

Some residents were skeptical about the cost, noting it will cost the average homeowner about $645 per year.

But officials say the investment in the 60-acre property is a good one.

There will be two other boards that need to approve the proposal - the Board of Finance and the Representative Town Meeting.