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$9.375 million beachfront home in Jupiter Island was the most expensive sale on the Treasure Coast in December. The property is a luxurious Bermudian-style courtyard home with four separate buildings surrounding a tranquil pool and courtyard.

    Here are the top 15 sales, broken down by county:

    **Indian River County**

    1. 912 Seagrape Lane, Vero Beach - $3.874 million

     * Bedrooms: 4, Bathrooms: 4½, Square feet: 4,671, Year built: 2007

    2. 0 Live Oak Drive, Wabasso Island - $2.9 million

     * Bedrooms: 4, Bathrooms: 4, Square feet: 3,270, Year built: 2024

    3. 490 Doubloon Drive, Vero Beach - $2.788 million

     * Bedrooms: 3, Bathrooms: 3, Square feet: 2,812, Year built: 1990

    4. Palm Island Lane, Vero Beach - $2.5 million

     * Bedrooms: 3, Bathrooms: 3½, Square feet: 3,673, Year built: 2003

    5. Azalea Lane, Vero Beach - $1.9 million

     * Bedrooms: 3, Bathrooms: 2½, Square feet: 2,202, Year built: 1958

    **Martin County**

    1. 43 N. Beach Road, Jupiter Island - $9.375 million

     * Bedrooms: 4, Bathrooms: 5½, Square feet: 4,644, Year built: 1960

    2. SE Old Plantation Circle, Jupiter - $5.587 million

     * Bedrooms: 5, Bathrooms: 7, Square feet: 5,655, Year built: 2019

    3. N. River Road, Sewall's Point - $5.15 million

     * Bedrooms: 3, Bathrooms: 3, Square feet: 4,044, Year built: 1975

    4. SE Windward Island Lane, Jupiter - $4.53 million

     * Bedrooms: 4, Bathrooms: 5, Square feet: 4,336, Year built: 2001

    5. SE Old Plantation Circle, Tequesta - $3.9 million

     * Bedrooms: 5, Bathrooms: 7, Square feet: 6,254, Year built: 2020

    **St. Lucie County**

    1. 6129 Spring Lake Terrace, Fort Pierce - $3 million

     * Bedrooms: 3, Bathrooms: 2, Square feet: 1,416, Year built: 2005

    2. 3207 S. Indian River Drive, Jensen Beach - $2.15 million

     * Bedrooms: 5, Bathrooms: 3, Square feet: 2,844, Year built: 1901

    3. SE Ballantrae Court, Port St. Lucie - $1.662 million

     * Bedrooms: 4, Bathrooms: 4, Square feet: 3,533, Year built: 1997

    4. Queen Frederika Court, Hutchinson Island - $1.45 million

     * Bedrooms: 3, Bathrooms: 3, Square feet: 2,267, Year built: 2021

    5. SE Via San Marino, Port St. Lucie - $1.435 million

     * Bedrooms: 4, Bathrooms: 4½, Square feet: 3,466, Year built: 2007