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.
What surrounds Key Colony Ocean Sound: seasonal events, annual programs and lifestyle indexes, measured from the building.
Flanigan's IndexLive nowYou will need a designated driver and a plan.
Distances are straight-line, not walking or driving.
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.
3-month rolling median of closed sales in Key Colony Ocean Sound; bars are closings per month.
Nearby buildings within half a mile.
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.
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).
Key Colony Ocean Sound currently has about 2.0 months of supply — a seller-friendly pace.
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.
Yes — Key Colony Ocean Sound is a waterfront building (Key Biscayne).
Key Colony Ocean Sound was built in 1979, 12 stories, 311 residences.
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.
Add a live Own Miami card to your site or blog — it updates automatically. See all widget options →
<iframe src="https://own.miami/embed/building/key-colony-ocean-sound" width="440" height="230" style="border:0;max-width:100%" loading="lazy" title="Own Miami building card"></iframe>