
Together, the two firms bring their shared values and multi-generational expertise to West Side Square—a transformative rental development in Jersey City.
A Legacy of Vision and Growth
At Altree Developments, our foundation is rooted in decades of experience and a proud multi-generational legacy, stemming from the success of H&R and Lanterra Developments. We are committed to pushing boundaries, exploring new markets, and building meaningful partnerships that reflect our values and vision for the future.
Today, we’re proud to announce a significant milestone in our journey—our partnership with LanTree Developments, a family-affiliated office led by Raphael Mandelbaum. This collaboration marks Altree’s expansion into the U.S. market, combining our shared legacy of excellence with a bold new chapter of innovation.
Introducing West Side Square in Jersey City
The Altree–LanTree partnership is being brought to life through West Side Square, a purpose-built rental development located in the heart of Jersey City, New Jersey. Strategically positioned along the New Jersey Port Authority (PATH) transit system, the community offers unmatched connectivity—just a 13-minute train ride to Manhattan’s Financial District via the Journal Square Transportation Centre. West Side Square will deliver:


Construction Progress: Major Milestones Achieved
Construction at West Side Square is progressing steadily. As of now:
These milestones reflect a strong trajectory toward delivering a dynamic new community to Jersey City.
Why Journal Square? A Neighbourhood on the Rise
Journal Square is quickly becoming one of the most desirable urban hubs in New Jersey. The area has experienced significant revitalization, led by transformative projects such as the Journal Squared Towers.
West Side Square residents will enjoy proximity to:
This unique blend of urban vibrancy, cultural depth, and natural beauty makes Journal Square the ideal location for our first U.S. project.
About LanTree Developments
LanTree Developments specializes in unlocking the potential of underutilized land across New York and New Jersey. The firm is known for developing residential buildings that:
Their commitment to revitalizing urban areas aligns perfectly with Altree’s values, making this partnership a natural fit.
Looking Ahead: A Shared Vision for the Future
Together, Altree and LanTree are shaping the future of real estate development across Canada and the U.S. This partnership is more than a joint venture—it’s a reflection of our mutual dedication to innovation, family values, and creating long-term value in the communities we serve.

To learn more about West Side Square and explore the vision behind this transformative rental community, visit: westsidesquare.com and follow us on Instagram @westsidesquarejc for the latest updates.