Key Colony Ocean Sound
251 Crandon Blvd · Built 1979 · 12 floors · 311 residences
Located in the Key Colony community on Key Biscayne, the Oceansound building offers a resort-style lifestyle on 40 acres of lush landscaping. The property provides residents with extensive amenities, including multiple swimming pools, a fitness center, a sauna, a jacuzzi, and a salon and spa. The grounds feature 12 tennis courts, a children's playground, a dog park, and a variety of walking and biking trails.
Residents have access to a private beach with a pavilion and beach service, as well as a gourmet market and on-site dining options. The building is situated in a prime waterfront location, offering views of the ocean and Biscayne Bay. The community provides a variety of conveniences including a business center, a library, and a convenience store.
Getting around
Key Biscayne is a walkable urban neighborhood. Transit, parks, dining and landmarks within reach:
A data-grounded score for Key Colony Ocean Sound from live market data — value, momentum, liquidity, building health, waterfront and age. Computed, not opinion.
Get new listings here before the portals, and a straight answer from someone who knows the building.
Inventory
Sold $/sqft trend
3-month rolling median of closed sales in Key Colony Ocean Sound; bars are closings per month.
Location
Nearby buildings within half a mile.
Building facts
- Address
- 251 Crandon Blvd
- Year built
- 1979
- Floors
- 12
- Residences
- 311
- Developer
- Fritz Scharenberg
- Waterfront
- Yes
Amenities
- · Beach access
- · Beachfront pool
- · Business center
- · Children's playground
- · Convenience store
- · Fitness center
- · Gourmet market
- · Hair salon
- · Jacuzzi
- · Jogging and bike trails
- · Library
- · Park
- · Party room
- · Sauna
- · Spa
- · Tennis courts
Building rules
- Parking
- The building offers assigned covered parking, with some units featuring two assigned covered parking spaces.
Special assessments & recertification outlook
ElevatedPublic records checked Oct 26, 2026: no liens, lawsuits or regulatory complaints found for the association.
Verified records
- PositiveBank financingOct 31, 2026
Regulated lenders recorded 3 purchase or refinance loans on this building in the last 12 months, financing 38% of its recorded sales, and accepted a down payment as low as 20%. A bank writing a condominium loan has just checked the building's reserves, insurance, litigation and owner-occupancy against its own standards — verified due diligence, read from the public record. Financeability Index 61/100.
Source: Miami-Dade Clerk official records
- Built 1979 — past its first structural milestone; next inspection around 2034
Estimated from Key Colony Ocean Sound’s age and signals in active listings — not an official inspection or reserve report. Always verify the building’s milestone-inspection status and reserves with the association before buying.
Financeability
What the banks say about Key Colony Ocean Sound: recorded purchase mortgages, the down payments they accepted, and the programmes in use.
Regulated lenders are writing purchase loans here at ordinary down payments — their due diligence on reserves, insurance and litigation, verified by the public record.
- Mortgages recorded, 12 months
- 6
- 3 from banks and credit unions · purchases and refinances
- Sales bank-financed
- 38%
- 8 recorded sales, 12 months · Resales only
- Average down payment
- 40.1%
- Lowest down payment accepted
- 20%
High confidence · As of 2026-10-31
Source: Miami-Dade County official records and the FHA/VA approval lists. Aggregates only; individual instruments are never shown. Compare with Key Biscayne
Flooding and storm surge
Public flood data at this building’s location, read Oct 22, 2026.
- FEMA flood zone
- Zone AE: high-risk area. FEMA maps a 1% yearly chance of flooding here.
- Base flood elevation on the map: 8.0 ft (NGVD29).
- Hurricane evacuation zone
- Zone A
- Miami-Dade storm surge planning zones run from A (called first) to E. The county decides which zones evacuate in a storm.
- Ground at the building
- 4.5 ft
- Lowest nearby street
- 2.7 ft
- Highest predicted tide, 2026
- 1.0 ft
Elevations in feet above the NAVD88 datum.
The lowest street next to this building sits 1.7 ft above this year’s highest predicted tide (Oct 27, 2026).
Estimated from public data, not a flood determination. Check the FEMA flood map and an elevation certificate for this building.
Legal & Regulatory
No material litigation foundCivil court cases involving the condominium association, classified by what they are about. Routine collections against individual owners are counted separately and do not affect the building’s standing.
- Active material lawsuits
- 0
- Owner / association disputes
- 0
- Routine collection cases
- 0
- DBPR complaints
- 0
- Open DBPR complaints
- 0
- Insurance claimClosedassociation as defendant · Filed Jan 2023
An insurance company filed a lawsuit against the condominium association. The case was voluntarily dismissed with prejudice in April 2023.
Source: Miami-Dade Clerk civil docket, summarized by own.miami
No civil cases involving the association were found on the Miami-Dade docket in the last five years.
DBPR registration PR1S004963 · Approved,Recorded. Public complaints on record with the Florida Division of Condominiums; investigations are confidential and not counted.
Court records are matched to the association by name and summarized by us; a case is a claim, not a finding. Ask the association for its litigation disclosure before buying.
Frequently asked
How much do condos at Key Colony Ocean Sound cost?+
There are 1 condos for sale at Key Colony Ocean Sound, from $1,900,000, with a median asking price of $1,900,000 ($1,229/sqft).
How much are the HOA fees at Key Colony Ocean Sound?+
HOA / maintenance fees at Key Colony Ocean Sound run around $1,707 per month among units currently for sale; the exact fee varies by unit size and line, so confirm the current amount with the listing or the condo association.
Is Key Colony Ocean Sound a waterfront building?+
Yes — Key Colony Ocean Sound is a waterfront building (Key Biscayne).
When was Key Colony Ocean Sound built?+
Key Colony Ocean Sound was built in 1979, 12 stories, 311 residences.
Who developed Key Colony Ocean Sound?+
Key Colony Ocean Sound was developed by Fritz Scharenberg.
We track every listing here, every day. Get the next one before it hits the portals — and a straight answer from someone who knows the building.
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