When it comes to development north of Miami-Dade County, analysts say transportation is one of the biggest factors fueling real estate investment in 2015.

New airport infrastructure, highway refurbishments, seaport expansion and a focus on transit-oriented housing point to new development that connect homes to job centers, attract millennials and bode well for live-work-play centers.

In Broward County, hundreds of millions in federal and state aid is expanding I-95 and the Fort Lauderdale-Hollywood International Airport. In-migration reached pre-recession levels, ratcheting up the county's apartment inventory to keep pace with demand in cities like Fort Lauderdale, Miramar and Pompano Beach.