Updated:
Rivergate Companies
Rivergate Companies was established in 2007 by Jay Massirman after decades at CBRE. The office oversees his personal capital and executes through direct...
Rivergate Companies
Rivergate Companies was established in 2007 by Jay Massirman after decades at CBRE. The office oversees his personal capital and executes through direct development and joint ventures rather than third-party fund commitments. The firm concentrates on real estate with confirmed positions in multifamily assets such as Valgard Pinecrest and Lazul plus the Miami City Self Storage portfolio. It also holds interests in Basis Industrial. Allocations span development and value-add stages in North America, primarily Florida markets and targeted urban infill locations nationwide. Structures include strategic joint ventures with operators such as EDEN Multifamily and RKW Residential. The team includes family members Drew Massirman as VP of Development and Dana Massirman as Director of Operations. Additional offices are not disclosed. Rivergate participates in industry groups including the Urban Land Institute and National Multi-Housing Council. Governance centers on Massirman family oversight with operating-company relationships that supply proprietary deal flow and asset management. This hybrid model separates investment decisions from day-to-day property operations while retaining control over capital allocation.
General information
Firm type
Single Family Office
Year founded
2007
Location
Region
North America
Country
United States
City
Coconut Grove
Corporate office
Coconut Grove, FL, United States
Principals
Jay Massirman
CEO & Founder
Altss tracks 2 additional named team members for this firm — including direct investment leads, IR, and operating principals not listed on the public website.
Book a demoSector focus
Frequently asked questions
Who runs investment decisions at Rivergate Companies?
Jay Massirman serves as CEO and Founder and directs investment decisions. Family members Drew Massirman and Dana Massirman hold operational roles in development and management.
How does Rivergate Companies source proprietary deal flow?
The firm sources through long-standing relationships with operating partners including EDEN Multifamily, Basis Industrial, and RKW Residential. Memberships in the Urban Land Institute and National Multi-Housing Council provide additional market access.
Is Rivergate Companies structured as a single family office or does it operate more like a venture firm?
Rivergate operates as a single-family office. It deploys capital through direct joint ventures and development rather than external fund commitments or venture-style structures.
Does Rivergate Companies participate in fund commitments or only direct deals?
Rivergate focuses exclusively on direct deals and joint ventures. No external fund commitments are disclosed in available records.
What investment stages does Rivergate Companies typically target?
The firm targets development and value-add stages in multifamily, self-storage, and industrial real estate.
Where does the underlying wealth come from?
Wealth originates from Jay Massirman's career in commercial real estate brokerage and principal transactions at CBRE spanning four decades.
What is Rivergate Companies' known posture on co-investments alongside external GPs?
Rivergate structures investments as joint ventures with operating partners rather than co-investments alongside traditional GPs.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
Need institutional-grade insight on family offices?
Altss delivers:
Prefer a guided tour?
We’ll walk you through: