A grand opening was held recently for Prairie Apartments, a 24-unit supportive housing development at 1218 W. Highland Ave., Milwaukee, for low-income adults that are homeless, have a mental illness or other conditions. The project’s co-developers are Guest House of Milwaukee and Heartland Housing. The Wisconsin Housing and Economic Development Authority (WHEDA) provided $4 million in low income tax credits for the project. The property was formerly the site of Genesis Detoxification Center. The general contractor for the project was Pewaukee-based VJS Construction Services.