Halstead Property has created a new top sales post and snagged a top Upper West Side manager at its sister firm Brown Harris Stevens to fill the post, the residential brokerage announced Wednesday morning.

Jim Gricar will join Halstead as general sales manager, effective April 4. Mr. Gricar, who will be based in Halstead’s new flagship office at 499 Park Ave., will also be in charge of recruiting talent and identifying strategic growth opportunities for the firm. For almost seven years, he was an executive vice president and director of West Side sales for Brown Harris Stevens, where he was credited for nearly doubling the size of the brokerage firm’s West Side office, located at 1926 Broadway.

“We needed another level of management because of our growth,” said Diane Ramirez, president of Halstead, adding that creating the new role was something in the works for some time. Mr. Gricar will report to Ms. Ramirez. “Timing is everything, and it was the right time for us and Jim. He is well-respected and will make a fantastic addition to the firm.”

“We wish Jim continued success and are happy he remains with Terra Holdings,” said Hall Willkie, president of Brown Harris Stevens, which, along with Halstead, falls under parent company Terra.

Brown Harris Stevens announced Wednesday that Kevin Kovesci was named sales manager of the Upper West Side office, replacing Mr. Gricar when he departs early next month. Mr. Kovesci is the firm’s TriBeCa and Village office manager, and Brown Harris is currently in the process of looking for his replacement.

Prior to joining Brown Harris Stevens, Mr. Gricar worked at the Corcoran Group for more than five years, holding roles such as managing director of that brokerage’s downtown Manhattan division and assistant manager in the East Side office. Most recently at Brown Harris Stevens, Mr. Gricar was also put in charge of Brown Harris Steven’s on-site marketing and sales as a managing director.

Halstead recently doubled its flagship office space and will move into its new 17,000-square-foot office at I.M. Pei-designed 499 Park Ave. office on April 4, according to Ms. Ramirez. The firm currently has roughly 900 agents in 19 offices in the tri-state area.