Ocean Sound - Key Colony 2
Ocean Sound (Key Colony II) is a 12-story oceanfront condominium at 251 Crandon Boulevard in Key Biscayne, completed in 1979 as the second of four towers within the gated Key Colony community developed by Fritz Scharenberg. The building is known for its distinctive pyramid-style architecture, set on a sloped profile designed to give upper units angled ocean and bay views with added privacy between floors. Ocean Sound comprises 312 residences and offers residents a swimming pool, fitness center, and direct beach access, alongside the wider Key Colony community's resort-style amenities, including additional pools, 12 tennis courts, a market, and a guard-gated entrance. Located on Key Biscayne's oceanfront strip along Crandon Boulevard, the building sits within a landscaped, low-density island community just minutes from Crandon Park and the village center, prized for its quiet, tropical setting close to Miami.
Amenities
- Swimming pool
- Fitness center / gym
- Direct beach access
- 12 tennis courts (Key Colony community)
- On-site market
- Guard-gated entrance / 24-hour security
- Children's playground
- Assigned covered parking
- Sauna / steam room (per building association sources)
- Oceanfront and lap pools (Key Colony community)
Ocean Sound sits within Key Colony, a gated oceanfront enclave on Crandon Boulevard in Key Biscayne, an island village connected to Miami by the Rickenbacker Causeway. The area is known for its low-rise, low-density character, proximity to Crandon Park and the beach, and quieter, more residential feel compared to mainland Miami high-rise districts.
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Key Biscayne, FL 33149
Available Residences at Ocean Sound - Key Colony 2
3 Bedroom Condos · 1 unit
| Unit | Asking Price | Bed(s)/Bath(s) | Living Size | Price/Sq.Ft. | Days on Market |
|---|---|---|---|---|---|
| 227 | $1,900,000 | 3 / 2 | 1,546 | $1,229 | 265 |
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ANALYTICS
CURRENT INVENTORY
INVENTORY BY BEDROOM
- 3 Bed (1) 100%
INVENTORY TREND (ALL UNITS)
Market & Community Report
As of August 12, 2026, Ocean Sound - Key Colony 2 carries 1 active listing at an average asking price of $1.9M, with an average time on market of 265 days. Closed sales over the preceding 36 months averaged $838 per sq ft, and 9 transactions closed in the past 12 months — implying 1.3 months of supply against the current pace of absorption.
Zip code 33149 (Key Biscayne) is home to 14,628 residents with a median age of 43.2. Per-capita income stands at $106,219; 77.1% hold a bachelor's degree or higher. 69.4% of units are owner-occupied; 34.6% of residents work from home.
Explore the full Key Biscayne market intelligence report — pricing trends, inventory & sales pace →
Data current as of August 12, 2026. Market metrics derived from MLS closed sales; community data from U.S. Census ACS.
Frequently Asked Questions — Ocean Sound - Key Colony 2
How many condos are for sale at Ocean Sound - Key Colony 2?
As of August 12, 2026, 1 residence is actively listed for sale at Ocean Sound - Key Colony 2. Current asking prices range from $1.9M to $1.9M. Inventory updates daily from the MLS.
How much do condos at Ocean Sound - Key Colony 2 cost?
Condos at Ocean Sound - Key Colony 2 are currently asking from $1.9M to $1.9M. Over the past 36 months, closed sales have averaged $838 per square foot. Final pricing varies by floor, line, square footage, finishes, and view.
What is the average price per square foot at Ocean Sound - Key Colony 2?
Based on MLS closed sales over the preceding 36 months, the average sale price at Ocean Sound - Key Colony 2 is $838 per square foot. Use this as a benchmark when comparing active listings in the building.
Where is Ocean Sound - Key Colony 2 located?
Ocean Sound - Key Colony 2 is located at 251 Crandon Blvd, Key Biscayne, FL, 33149, in the Key Biscayne area.
What neighborhood is Ocean Sound - Key Colony 2 in?
Ocean Sound - Key Colony 2 is in Key Biscayne, Key Biscayne. You can compare every condo building, home inventory, and price trend across Key Biscayne on its neighborhood guide.
How many units are in Ocean Sound - Key Colony 2?
Ocean Sound - Key Colony 2 has 312 residences across 12 stories.
What year was Ocean Sound - Key Colony 2 built?
Ocean Sound - Key Colony 2 was completed in 1979.
What amenities does Ocean Sound - Key Colony 2 offer?
Ocean Sound - Key Colony 2 amenities include Swimming pool, Fitness center / gym, Direct beach access, 12 tennis courts (Key Colony community), On-site market, Guard-gated entrance / 24-hour security, Children's playground, Assigned covered parking.