Al Quentel joined Greenberg Traurig in 1971 as a named principal in the firm. He was born in Miami, and is a fourth-generation Floridian.

Quentel helped write Florida's first condominium statute (enacted 1963) as part of a three-law firm-team hired by Arvida Corporation, pioneered the concept of two-unit condominiums to facilitate separate ownerships in mixed use projects, established as-built outdoor living area easements to facilitate siting of zero-lot-line homes, and developed strategies to save Florida taxes.

For about 20 years, Quentel concentrated on representing pension funds, including five state funds, in real estate equity purchases and sales, real estate lending, and occasional real estate borrowing. Transactions took place in 16 states.