Casa del Mar Condos — Key Biscayne

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

6 for sale8 for rent$1.5M – $3.8M$1,280 / sqft median

About Casa del Mar

Casa del Mar, at 881 Ocean Dr, is a condo building in Key Biscayne.

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. 8 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. Prices have firmed 44% year over 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).

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
Bedrooms
1 – 3 bedrooms
Bathrooms
1 – 3 baths

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%

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.

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 sqft33$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

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. 8 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. 8 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.

Where is Casa del Mar located?

Casa del Mar is at 881 Ocean Dr, Key Biscayne, FL 33149, in Key Biscayne.

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, 8 for rent and 4 sold in the past year. 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.