JMA Ventures | 2,753 followers on LinkedIn. JMA Ventures is a full service real estate investment firm, serving as managing partner of over $1.5 Billion in existing projects spanning hospitality, leisure, residential developments, retail, office and industrial/telecom. Founded in 1986, our San Francisco based company has focused on delivering superior risk adjusted returns to our investors while providing quality products and improving the communities and environments in which we conduct business. Our value-added approach has delivered outperforming returns across our portfolio base during our 20 year history.