Casa del Mar Condos — Key Biscayne

881 Ocean Dr, Key Biscayne, FL 33149 · Key Biscayne

6 for sale9 for rent$1.5M – $3.8M$1,280 / sqft median

About Casa del Mar

Casa del Mar, at 881 Ocean Dr, is a 27-story condo building in Key Biscayne, completed in 1971 with 229 residences.

6 residences are for sale right now, asking $1.5M to $3.8M (a median $1,280 per square foot). By size: 3 two-bedrooms from $1.5M and 3 three-bedrooms from $3.6M. 9 residences are offered for rent, $6,000–$22,000 per month.

Casa del Mar recorded 4 closed sales in the trailing twelve months at a median $2.5M ($1,184/sq ft), typically going under contract in about 84 days. That median is up 44% on the prior year. By size, two-bedrooms sold for a median $2.5M and three-bedrooms sold for a median $3.1M. 16 leases were signed over the same period at a median $8,300 a month (two-bedrooms $8,300 and three-bedrooms $9,500).

Life in the building comes with guard at site, tennis courts, basketball court, a doorman, a fitness center and a heated pool.

Casa del Mar Building Facts

The Building

Address
881 Ocean Dr, Key Biscayne, FL 33149
Neighborhood
Key Biscayne
City
Key Biscayne, FL 33149
County
Miami-Dade County
Year built
1971
Stories
27
Residences
229
Bedrooms
1 – 3 bedrooms
Bathrooms
1 – 3 baths
Construction
CBS Construction
Legal name
Casa Del Mar Condominium

Ownership Costs & Rules

HOA fees
$1,043 – $2,607/mo
HOA average
$1,970/mo
HOA per sq ft
$0.88/sq ft per month
HOA includes
Trash Removal, Water, Common Area, Elevator, Landscaping/Lawn Maintenance, Manager, Security, Sewer
Pets
Not allowed
Leasing
3 months minimum · up to 1× a year

Market — Last 12 Months

Closed sales
4
Median sold price
$2.5M
Median sold $/sq ft
$1,184
Median days on market
84 days
Leases signed
16
Median rent
$8,300/mo
Price change vs. prior year
+44%

Views, Parking & Security

Waterfront
Yes
Views
Bay, Direct Ocean, Ocean, Pool Area
Parking
1 Space, Assigned, Covered
Security
Guard At Site, Doorman, Lobby Secured, Elevator Secure

HOA, pet and leasing details are read from current MLS listings in the building and can vary by unit — confirm with the association before you buy.

Casa del Mar Amenities

Pool, Spa & Fitness

  • Exercise Room
  • Heated Pool
  • Pool
  • Private Pool
  • Sauna

Security & Access

  • Guard At Site
  • Doorman
  • Lobby Secured
  • Private Guards
  • Security Patrol

Social & Leisure

  • Tennis Court(s)
  • Basketball Court
  • Child Play Area
  • Library
  • Clubhouse-Clubroom
  • Barbecue

Services & Building

  • Elevator(s)
  • Elevator Secure
  • Trash Chute
  • Bike Storage

More Amenities

  • Complex Fenced
  • Smoke Detector
  • Community Room
  • Fire Sprinklers

Casa del Mar Residence Features

  • Dishwasher
  • Dryer
  • Refrigerator
  • Blinds
  • Electric Range
  • Microwave
  • Open Balcony
  • Washer
  • Bay
  • Direct Ocean
  • Electric Water Heater
  • Entrance Foyer
  • Ocean View
  • Closet Cabinetry
  • Disposal
  • Elevator
  • Hurricane Shutters
  • Sliding
  • Walk-In Closet(s)
  • Wall Oven
  • Den/Library/Office
  • Impact Glass
  • Pantry
  • Pool Area View

Features vary by residence — confirm details for any specific unit with us.

Floor Plans & Residences at Casa del Mar

Residence configurations observed across current and recent Casa del Mar listings:

ResidenceSize RangeFor SaleFor RentSale PricingAvg $/SqFt
2 Bed / 2 Bath930–1,875 sqft34$1.5M – $2.5M$1,344
2 Bed / 3 Bath1,042–1,875 sqft—1——
3 Bed / 2 Bath1,875 sqft—2——
3 Bed / 3 Bath3,120 sqft32$3.6M – $3.8M$1,169

Derived from live MLS data — request official floor plans and we'll send the developer set for your line.

Casa del Mar Listings

Casa del Mar Market Report

Over the last 12 months, 4 condo sales closed in Casa del Mar at a median of $2.5M ($1,184/sqft), median 84 days on market. Median sold prices are up 44.1% year-over-year. 16 leases were signed at a median of $8,300/mo ($4.70/sqft). Computed from recorded MLS closings; updates automatically.

0$2.5M$5.0MNovDecJanFebMarAprMayJunJulAugSepOctNov: $3.1M (1 sales)Feb: $1.9M (1 sales)Jul: $2.5M (1 sales)Sep: $2.2M (1 sales)$3.1M$2.2M
$2.5M
Median (12 mo)
4
Sales (12 mo)
84 days
Median DOM

Last 12 Months by Bedroom Count

ResidenceSalesMedian SoldSold $/SqFtDOMLeasesMedian RentRent $/SqFt
1 Bed————1$5,750$6.18
2 Bed2$2.5M$1,3072111$8,300$4.70
3 Bed2$3.1M$1,1841114$9,500$4.27
Month-by-month table — All
MonthSalesMedian SoldSold $/SqFtDOMLeasesMedian RentRent $/SqFt
Nov 20251$3.1M$1,000841$8,500$4.53
Dec 2025———————
Jan 2026————3$10,000$4.43
Feb 20261$1.9M$1,01961$6,500$3.47
Mar 2026————2$9,500$5.70
Apr 2026———————
May 2026————2$9,000$4.80
Jun 2026————2$8,500$4.53
Jul 20261$2.5M$1,307212$7,500$5.28
Aug 2026————1$5,750$6.18
Sep 20261$2.2M$1,184111———
Oct 2026————2$9,500$5.07

Casa del Mar Location & Address

Address

881 Ocean Dr, Key Biscayne, FL 33149

Key Biscayne · Key Biscayne · Miami-Dade County

Get directions

Similar Buildings to Casa del Mar

Buyers weighing Casa del Mar tend to shortlist these Key-biscayne buildings in a comparable price band:

Casa del Mar — Frequently Asked Questions

What do condos at Casa del Mar sell for?

Current asking prices run $1.5M–$3.8M across 6 listings. Closed sales over the past year had a median of $2.5M, or $1,184 per square foot. Typical sale prices: two-bedrooms $2.5M and three-bedrooms $3.1M. Exact value depends on floor, line, view and finish.

Are there condos for sale at Casa del Mar right now?

Yes — 6 residences are for sale, the least expensive at $1.5M. Mix: 3 two-bedrooms and 3 three-bedrooms. 9 units are also available for rent.

What does it cost to rent at Casa del Mar?

The median rent over the past twelve months was $8,300 a month across 16 leases. One-bedrooms rented for about $5,750, two-bedrooms rented for about $8,300 and three-bedrooms rented for about $9,500. 9 units are available to lease today. Minimum lease terms are set by the association — ask us for Casa del Mar’s current rental policy.

Are prices going up at Casa del Mar?

The median sale price is up 44% compared with the prior twelve months. Units that sold took a median 84 days to go under contract. 4 sales closed in the last year.

When was Casa del Mar built?

Casa del Mar was completed in 1971 and has 27 stories and 229 residences.

Where is Casa del Mar located?

Casa del Mar is at 881 Ocean Dr, Key Biscayne, FL 33149, in Key Biscayne. Nearby comparable buildings include Commodore Club, Sands of Key Biscayne and Island House.

How does Casa del Mar compare with nearby buildings?

Casa del Mar lists from $1.5M to $3.8M today. For comparison, Commodore Club asks $724K–$4.5M, Sands of Key Biscayne asks $2.5M and Island House asks $1.2M–$3.6M.

Living at Casa del Mar: Summary

Casa del Mar is a condominium in Key Biscayne, Key Biscayne, FL 33149 (Miami-Dade County). At last update: 6 for sale, 9 for rent and 4 sold in the past year. Buyers comparing it also look at Commodore Club, Sands of Key Biscayne and Island House. For a private showing, off-market availability or a valuation of your unit at Casa del Mar, call Matthew Gromadzki at +1 786-370-8570.