Two apartment communities are on tap in Miramar on part of a tract the developer just bought for $35 million, more movement in the multifamily market that shows it is one of South Florida’s strongest property types.

The Altman Cos., a prolific condominium and apartment developer based in Boca Raton, will build 320-unit Altis West and 330-unit Altis East adjacent to each other on the northwest corner of Miramar Parkway and Red Road.