Key Biscayne 5+ Bedroom Homes for Sale

140 listings

Live MLS inventory in Key Biscayne, updated continuously. Showing homes with 5 or more bedrooms.

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

241 Cape Florida Dr, Key Biscayne, FL 33149

$29,900,000New

8 bd · 9 ba · 9,159 sqft

241 Cape Florida Dr, Key Biscayne, FL 33149

CAPE FLORIDA SUB SEC 3

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

$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

$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

$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

$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

$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

$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

$8,250,000

6 bd · 9 ba · 3,842 sqft

165 Hampton Ln, Key Biscayne, FL 33149

TROPICAL ISLE HOMES SUB 4

$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

$7,450,000

7 bd · 9 ba · 4,565 sqft

425 Harbor Dr, Key Biscayne, FL 33149

TROPICAL ISLE HOMES SUB 3

5+ Bedroom 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.

Narrowing Key Biscayne to 5+ bedrooms lands you in the large-format end, where homes suit multigenerational households, dedicated home offices and buyers consolidating two residences into one. In a market known for a family island village between two state parks, fifteen minutes from Brickell, bedroom count is the filter that maps cleanly onto real life — and this page keeps every property type on screen, so you can measure a 5-bedroom condo against a townhome or a house at the same price.

Key Biscayne Market Snapshot

226

Homes sold, last 12 months

$1.6M

Median sale price

60 days

Median time on market

Frequently Asked Questions

What does a 5-bedroom home run in Key Biscayne?

The range is wide, because property type moves the price as much as bedroom count — a 5-bedroom condo, townhome and house in Key Biscayne can sit in entirely different bands. The live listings here show today's asking prices across all three; sort by price to bracket the market in seconds.

Do listed bedroom counts include dens and offices?

A legal bedroom needs a window and a closet, and MLS counts follow that rule — dens and offices are noted separately. If a flex room matters to you, tell us: plenty of Key Biscayne floor plans include a den that lives as an extra bedroom without being counted as one.

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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