Four residential properties Miami Beach have hit the market, each asking over $25 million - these are listed on www.sergekay.com.

The priciest unit is a penthouse at One Bal Harbour, which listed for $30 million. The penthouse includes five bedrooms, five-and-a-half baths and more than 7,770 square feet. The unit also features a hot tub on a wraparound balcony, a sauna and private two-car garage.

At the opposite end of Miami Beach, an 8,229-square-foot duplex is listed for $29.9 million at the Continuum. The apartment has seven bedrooms, six-and-a-half baths, a home theater, custom security and audio-visual features.

At 2920 North Bay Road, a recently completed mansion is listed for $29.5 million. The 9,815-square-foot house features a feng shui design, a 60-plus-foot saltwater pool, an elevator, a wine cellar, a dock, a roof deck with bar and 170 feet of Biscayne Bay frontage.

Finally, a historic Mediterranean Revival estate built in 1932 is listed for $26.77 million. The house includes a large courtyard, putting green, six bedrooms and a tower containing a private office.

Call or email Serge Kay for further information. 786-512-5555 or team@sergekay.com