The pandemic threw some new challenges at real estate agents in 2020, but the Watertown home sales remained almost as strong as the prior year. The total sales in Watertown figure in 2020 was $586.21 million from 413 properties. The prior year, 429 properties sold for about about $4 million more than 2020. As in prior years, the top agent for Watertown home sales was Ari Koufos, broker/owner of Realty Executives. He sold 23 properties for $22.23 million.