The owners of the Chicago Cubs will control more than half of the rooftop business buildings across the street from Wrigley Field after buying three more properties this week.

Greystone Sheffield Holdings, a Chicago-based venture owned by the Ricketts family, has purchased the Beyond the Ivy rooftop buildings at 1010 and 1038 W. Waveland Ave., as well as the Sky Lounge Wrigley Rooftop at 1048 W. Waveland beyond the left-field bleachers, a family spokesman has confirmed.

Purchase prices of the buildings were not immediately available through the Cook County records website, but the previous owner was an entity owned by local real estate investor Donal Barry, Cook County records show.

Barry bought the property at 1038 W. Waveland for $1 million in 2004—close to the same time the Cubs signed 20-year revenue-sharing agreements with rooftop property owners—and took out a nearly $6 million loan against the property in 2006, according to county records.

It's the latest strategic move in a long-running effort by Cubs ownership to take over the rooftop market after fighting with rooftop owners over the team's right to put up outfield signage that blocks some of their views into the ballpark.

The revenue-sharing contracts allow rooftop owners to sell tickets to fans to watch games from their buildings in exchange for paying the team 17 percent of their pretax revenues. Those rooftops were collectively generating about $2.5 million in ticket revenue annually for the team. But Cubs management and rooftop owners have been at odds over pricing discounts in recent seasons when the team has struggled on the field and at the gate.

A RUN OF PURCHASES

Adding the new properties brings the family's portfolio to nine of the 16 rooftop venues along Sheffield and Waveland avenues, all of which have been acquired in the past 13 months.

In January 2015, the Rickettses' venture bought the property at 3639 N. Sheffield Ave. for $4.2 million from former rooftop business owner Jim Lourgos. Days later, the family paid $1.65 million and $1.35 million respectively to acquire the rooftop buildings at 1032 W. Waveland and 3643 N. Sheffield from George Loukas, who also owns the Cubby Bear bar across the street from Wrigley Field.

Then in May, the Cubs owners bought the buildings at 3617, 3619 and 3637 N. Sheffield for undisclosed prices from a venture managed by Chicago commercial real estate investor Jerry Lasky.

The family also has a financial stake in Down the Line Rooftop at 3621 N. Sheffield, where it is suing for the right to buy the building in full.