FLORIDA LUXReal Estate

Key Biscayne Homes for Sale

141 listings

Live MLS inventory in Key Biscayne, updated continuously. Florida Lux Real Estate currently tracks 141 active listings here. MLS inventory updated September 7, 2026.

Current Key Biscayne Homes for Sale

PriceAddressBedsBathsSq Ft
$237,000,000485 W Matheson Dr5911,528
$29,500,000260 Cape Florida Dr91010,964
$27,900,000241 Cape Florida Dr899,159
$25,900,000200 Harbor Dr442,566
$19,950,000120 Knollwood Dr676,208
$19,900,000520 S Mashta Dr543,085
$19,800,000100 Cape Florida Dr498,240
$19,500,000960 Mariner Dr6107,742
$18,900,000445 Grand Bay Drive # PH-1A568,435
$18,500,000799 Crandon Blvd # PH-8564,566
View all 141 Key Biscayne Homes for Sale
485 W Matheson Dr, Key Biscayne, FL 33149
$237,000,000
5 bd · 9 ba · 11,528 sqft
485 W Matheson Dr, Key Biscayne, FL 33149
TROPICAL ISLE HOMES RESUB
260 Cape Florida Dr, Key Biscayne, FL 33149
$29,500,000
9 bd · 10 ba · 10,964 sqft
260 Cape Florida Dr, Key Biscayne, FL 33149
CAPE FLORIDA SUB SEC 3
241 Cape Florida Dr, Key Biscayne, FL 33149
$27,900,000
8 bd · 9 ba · 9,159 sqft
241 Cape Florida Dr, Key Biscayne, FL 33149
CAPE FLORIDA SUB SEC 3
200 Harbor Dr, Key Biscayne, FL 33149
$25,900,000
4 bd · 4 ba · 2,566 sqft
200 Harbor Dr, Key Biscayne, FL 33149
TROPICAL ISLE HOMES SUB 4
120 Knollwood Dr, Key Biscayne, FL 33149
$19,950,000
6 bd · 7 ba · 6,208 sqft
120 Knollwood Dr, Key Biscayne, FL 33149
CAPE FLA SUB SEC 2
520 S Mashta Dr, Key Biscayne, FL 33149
$19,900,000
5 bd · 4 ba · 3,085 sqft
520 S Mashta Dr, Key Biscayne, FL 33149
MASHTA ISLAND A REPLAT OF
100 Cape Florida Dr, Key Biscayne, FL 33149
$19,800,000
4 bd · 9 ba · 8,240 sqft
100 Cape Florida Dr, Key Biscayne, FL 33149
CAPE FLORIDA SUB SEC 3
960 Mariner Dr, Key Biscayne, FL 33149
$19,500,000
6 bd · 10 ba · 7,742 sqft
960 Mariner Dr, Key Biscayne, FL 33149
CAPE FLA SUB SEC 2
445 Grand Bay Drive # PH-1A, Key Biscayne, FL 33149
$18,900,000
5 bd · 6 ba · 8,435 sqft
445 Grand Bay Drive # PH-1A, Key Biscayne, FL 33149
GRAND BAY
799 Crandon Blvd # PH-8, Key Biscayne, FL 33149
$18,500,000
5 bd · 6 ba · 4,566 sqft
799 Crandon Blvd # PH-8, Key Biscayne, FL 33149
OCEAN CLUB
631 N Mashta Drive, Key Biscayne, FL 33149
$18,500,000
4 bd · 4.5 ba · 2,255 sqft
631 N Mashta Drive, Key Biscayne, FL 33149
350 Ocean Dr # LPH2N, Key Biscayne, FL 33149
$17,900,000
5 bd · 6 ba · 4,764 sqft
350 Ocean Dr # LPH2N, Key Biscayne, FL 33149
OCEANA KEY BISCAYNE
640 S Mashta Dr, Key Biscayne, FL 33149
$16,800,000
4 bd · 4 ba · 3,620 sqft
640 S Mashta Dr, Key Biscayne, FL 33149
MASHTA ISLAND
131 Cape Florida Dr, Key Biscayne, FL 33149
$16,500,000New
6 bd · 7 ba ·
131 Cape Florida Dr, Key Biscayne, FL 33149
CAPE FLORIDA SUB SEC 3
161 Cape Florida Drive, Key Biscayne, FL 33149
$14,990,000New
4 bd · 6 ba · 6,661 sqft
161 Cape Florida Drive, Key Biscayne, FL 33149
CAPE FLORIDA SUB SEC 3
420 Island Dr, Key Biscayne, FL 33149
$12,485,000
6 bd · 8 ba · 6,405 sqft
420 Island Dr, Key Biscayne, FL 33149
CAPE FLORIDA SUB SEC 1
350 Ocean Dr # 701N, Key Biscayne, FL 33149
$11,495,000
4 bd · 6 ba · 3,787 sqft
350 Ocean Dr # 701N, Key Biscayne, FL 33149
Oceana Key Biscayne
31 Island Dr, Key Biscayne, FL 33149
$9,800,000
6 bd · 7 ba · 5,826 sqft
31 Island Dr, Key Biscayne, FL 33149
CAPE FLORIDA SUB SEC 3
625 Curtiswood Dr, Key Biscayne, FL 33149
$9,200,000
5 bd · 6 ba · 4,416 sqft
625 Curtiswood Dr, Key Biscayne, FL 33149
BISCAYNE KEY ESTATES
350 E Ocean Dr # 301N, Key Biscayne, FL 33149
$8,950,000
4 bd · 7 ba · 3,798 sqft
350 E Ocean Dr # 301N, Key Biscayne, FL 33149
Oceana Key Biscayne
238 Buttonwood Dr, Key Biscayne, FL 33149
$8,500,000
6 bd · 7 ba · 4,190 sqft
238 Buttonwood Dr, Key Biscayne, FL 33149
TROPICAL ISLE HOMES SUB 4
165 Hampton Ln, Key Biscayne, FL 33149
$8,250,000
6 bd · 9 ba · 3,842 sqft
165 Hampton Ln, Key Biscayne, FL 33149
TROPICAL ISLE HOMES SUB 4
544 Warren Ln, Key Biscayne, FL 33149
$8,000,000New
6 bd · 6 ba · 1,044 sqft
544 Warren Ln, Key Biscayne, FL 33149
TROPICAL ISLE HOMES SUB
545 SABAL PALM, Key Biscayne, FL 33149
$7,950,000
5 bd · 5 ba · 4,166 sqft
545 SABAL PALM, Key Biscayne, FL 33149
TROPICAL ISLE HOMES SUB 2N

Homes for Sale in Key Biscayne: What to Know Before You Search

Beyond the Rickenbacker tollgate, tucked between two state parks, Key Biscayne functions as Miami's island village — a K-8 school and streets where children pedal to the beach. Ordinance limits the condo count and no new building has opened since 2014, which means the scarcity driving prices here is entirely real.

This page pulls the entire Key Biscayne for-sale market into one view — houses, condos and townhomes side by side — so you can weigh what the same budget buys across different forms of ownership. Key Biscayne is a market defined by a family island village between two state parks, fifteen minutes from Brickell, and buyers who track it as a whole rather than fixating on one building or subdivision tend to find the better deal in the category they never planned to shop.

Key Biscayne Market Snapshot

227
Homes sold, last 12 months
$1.6M
Median sale price
61 days
Median time on market

Frequently Asked Questions

Is now a sensible time to buy in Key Biscayne?

It depends entirely on the segment — houses, condos and townhomes in Key Biscayne each run on their own supply-and-demand clock. The live tiles on this page report what actually closed over the past year and how long those sales took; ask us and we'll break down the exact slice you're weighing.

What do buyers relocating from another state need to know about Key Biscayne?

Florida charges no state income tax and shields a primary residence through homestead, but the diligence that matters most here is insurance and, for condos, the association's finances. We take every client through reserves, budgets and any pending assessment work before an offer goes in — never after.

How do I arrange a showing in Key Biscayne?

Each listing on this page carries an inquiry form that goes straight to our brokerage — or reach us at +1 786-370-8570. We schedule private tours to fit your calendar and run live video walkthroughs for buyers relocating from out of state, with no obligation attached.

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