Developers have surpassed the 50,000-unit milestone for new condos planned for east of Interstate 95 in Miami-Dade, Broward and Palm Beach counties since 2011.

If every proposed unit is constructed, developers will have created more new condos during this real estate cycle, which began in 2011, than in the previous stretch from 2003 to 2010, when fewer than 49,000 units were created in coastal South Florida, according to research from the preconstruction condo projects website CraneSpotters.com.

As of the week of Feb. 1, developers have completed 57 new condo buildings with more than 4,300 units in South Florida since 2011. Nearly 130 new condo buildings with more than 12,900 units are under construction. The combination of new units completed and under construction together represent less than 35 percent of the total number of condos announced since 2011.

An additional 233 condo buildings with nearly 33,000 units — more than 65 percent of the announced pipeline — are in the planning or presale phase of development in coastal South Florida.

As a result, developers are increasingly offering generous incentives — including travel reimbursements for out-of-town buyers, designer credits for the interior build-out of units, and broker commissions of as much as 10 percent of the contracted purchase prices. Most of the perks are being offered in Miami-Dade County where developers have announced more than 260 new condo buildings with nearly 37,000 units. Nearly three of every four condo units slated to be developed during this South Florida boom are in Miami-Dade.