MDS Engineering provided full MEP design services for a new 7-story multi-unit residential development in Lancaster, PA, with systems tailored to meet PHFA guidelines, code requirements, and long-term performance goals. The design featured high-efficiency ducted heat pumps, centralized power distribution with individual metering, LED lighting throughout, and water-efficient plumbing systems with in-unit electric water heaters. Through BIM coordination and detailed construction documentation, MDS delivered a fully integrated, permit-ready MEP package that supports reliable, cost-conscious operation for modern multifamily living.