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Built in 1979 - 312 units - 12 floors

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Building Information

Ocean Sound - Key Colony 2

Number of units: 310
Active listings for rent: 5
Active listings for sale: 4
Building inventory for sale: 1%
Number of sales over the last 12 months: 10
Number of sales over the last 6 months: 3
Number of sales over the last 3 months: 1
Avg. time to close over last 12 months: 90 days

Address

251 Crandon Blvd, Key Biscayne, Miami-Dade, FL, 33149

Key Colony 2 Condominium Assn
Key Colony 1 Condominium
Association Inc,Tidemark,
251 Crandon Blvd,
Key Biscayne, FL 33149
Phone: (305) 361-9351

Link: https://

Recent Sales

Unit # Size Closing Date Sale Price PPSF
628 1,532 sq ft Dec 2025 $1,300,000 $849
829 1,532 sq ft Oct 2025 $1,420,000 $927
1233   Sep 2025 $1,272,000  
904 1,532 sq ft Aug 2025 $1,000,000 $653
624 3,064 sq ft Aug 2025 $2,850,000 $930
222 1,546 sq ft Aug 2025 $1,101,500 $712

Market Information

Building vs Area

Ocean Sound - Key Colony 2: $920/sq. ft.
Key Biscayne: $1290/sq. ft.

Area vs City

Key Biscayne $1290/sq. ft.
Miami-Dade $662/sq. ft.

Inventory for sale

Key Biscayne: 2%
Miami-Dade: 4%

Avg. time to close over last 12 months

Ocean Sound - Key Colony 2 90 days
Key Biscayne: 93 days
Miami-Dade: 79 days