On the 220-acre Deering Bay tract, the new Siena Tower, like the Verona building completed last May, will have only four residences per floor on the first 12 floors. The living areas will range from 2,745 sf to 3,669 sf, including balconies and terraces.

The top two levels will each feature three penthouses, with the two center penthouses containing 5,780 sf, including balconies. Unit prices range from $500,000 to just under $2 million.

Located in the southern tip of Coral Gables at 13605 Old Cutler Rd., the Deering Bay site will be limited to 286 residences. Amenities will include an 18-hole Arnold Palmer-designed golf course and three deep-water marinas. Coastal Construction Co., the general contractor, expects to complete the Siena late next year.