From left: Vince Rocco, Andy Kim, 170 East 80th Street and the six-story waterfall

Amid plans to grow townhouse and new development divisions, the boutique brokerage Blu Realty Group has landed two high-priced townhouse listings — promising to use unconventional marketing strategies to sell the properties.

Andy Kim, the firm’s co-founder, will bring a $31 million Upper East Side townhouse to the market today, and Vince Rocco, a former Halstead Property broker who now heads Blu’s Riverside Boulevard office, will list a $17.5 million gutted townhouse next month. [more]