FLORIDA LUXReal Estate

Key Biscayne Single Family Homes for Sale

31 listings

Live MLS inventory in Key Biscayne, updated continuously.

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
$19,900,000New
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
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
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
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
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
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
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
571 Glenridge Rd, Key Biscayne, FL 33149
$7,490,000
5 bd · 7 ba · 3,768 sqft
571 Glenridge Rd, Key Biscayne, FL 33149
TROPICAL ISLE HOMES SUB
425 Harbor Dr, Key Biscayne, FL 33149
$7,450,000
7 bd · 9 ba · 4,565 sqft
425 Harbor Dr, Key Biscayne, FL 33149
TROPICAL ISLE HOMES SUB 3
685 Harbor Ln, Key Biscayne, FL 33149
$6,950,000
5 bd · 6 ba · 5,421 sqft
685 Harbor Ln, Key Biscayne, FL 33149
BISCAYNE KEY ESTATES
110 Hampton Ln, Key Biscayne, FL 33149
$6,900,000
6 bd · 7 ba · 3,550 sqft
110 Hampton Ln, Key Biscayne, FL 33149
TROPICAL ISLE HOMES SUB 4
760 Woodcrest Rd, Key Biscayne, FL 33149
$6,395,000
5 bd · 6 ba · 4,003 sqft
760 Woodcrest Rd, Key Biscayne, FL 33149
BISCAYNE KEY ESTATES
561 Warren Ln, Key Biscayne, FL 33149
$5,995,000
5 bd · 6 ba · 3,762 sqft
561 Warren Ln, Key Biscayne, FL 33149
TROPICAL ISLE HOMES SUB
501 Bay Lane, Key Biscayne, FL 33149
$5,990,000New
5 bd · 5 ba · 4,759 sqft
501 Bay Lane, Key Biscayne, FL 33149
TROPICAL ISLE HOMES SUB 3

Single Family 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.

Buying a single-family home in Key Biscayne means owning the land under it — no shared walls, no tower bylaws, and the freedom to renovate or expand within what local zoning permits. In a market shaped by a family island village between two state parks, fifteen minutes from Brickell, detached houses hold a scarcity premium that tends to carry value through the ups and downs of a cycle, because a good lot is the one thing new construction can't manufacture.

Key Biscayne Market Snapshot

228
Homes sold, last 12 months
$1.6M
Median sale price
60 days
Median time on market

Frequently Asked Questions

Do houses in Key Biscayne come with HOA fees?

Plenty don't. Outside gated and master-planned communities, a Key Biscayne house frequently carries no association dues at all, and where one exists the fee is usually light next to a condo's — there's no building to insure or staff. Every listing on this page shows the association cost, if any.

What should I expect for homeowners insurance on a Key Biscayne house?

Insurance is a genuine budget line in Florida, and it tracks roof age, build year and flood zone far more than sale price. A newer roof and newer-code construction quote noticeably better. We pull the insurance picture on any house you're serious about before you write an offer.

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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