An entrepreneur and self-starter, Alan S. Macken is bringing the construction industry into the 21st century. With the advent of BTP Construction, Macken is bridging the gap between contractors, building suppliers, developers and consumers. After working in the real estate and construction industry for over 20 years, he saw a clear void in the. marketplace and launched BTP Construction in 2010. Macken’s 20+ years of real estate experience runs the gamut. He is a principal in a real estate brokerage firm, developer, investor and constructor with an impressive portfolio.. Over the course of his career, Macken has developed, leased and sold ultra-exclusive residential properties, as well as professional office space, single-family planned unit developments, town home communities, high-rise condominiums and retail shopping centers throughout Florida. During this tenure, he has played a significant role in real estate development and transactions that value in excess $1 billion.