Safety & registry resources

Review official public-safety information for any area from these government sources:

U.S. Dept. of Justice National Sex Offender Public Website (NSOPW)
FBI: state sex-offender registry directory

Homes Under $900K in Key Biscayne, FL — Page 3

Buy

Start here

Homes for sale by state
Home buying tips
Before you start looking
The buying timeline

Afford it

Today's mortgage rates
Mortgage calculator
How much can I afford?
Get pre-approved

Make the deal

Writing a winning offer
Inspections & appraisals
Closing costs, itemized
Find a buyer's agent

Save search Advertise Sign In

Saved homes Saved searches Your tours Your inquiries Recently viewed Account settings

Commercial

56 listings

Sell

Selling Options

What's my home worth?
Compare selling options
Get an instant cash offer
Buy before you sell

Resources

How selling works
When should I sell?
Home selling tips
Pricing your home
What's worth fixing first
Find a seller's agent

Homes Under $900K in Key Biscayne, FL

Hide Map

7 of 56 Listings

Map

7 of 56 Listings

Price Reduced41Active

Homes Under $900K in Key Biscayne, FL

Hide Map

7 of 56 Listings

Map

Homes Under $900K in Key Biscayne, FL

7 of 56 Listings

Your Key Biscayne agent

Jonathan Alfonso

Portal Real Estate

Lic. #3306632

Call Jonathan

Price Reduced41Active

Your Key Biscayne agent

Jonathan Alfonso

Portal Real Estate

Lic. #3306632

Call Jonathan

$764,900

2 bd · 2 ba · 1,335 sqft

170 Ocean Lane Dr 310, Key Biscayne, FL

Melinda Foley · All Florida Property Group,Inc

Price Reduced17Active

$450,000

1 bd · 1 ba · 608 sqft

255 Sunrise Dr Unit 103, Key Biscayne, FL

Maria-Elda Castaneda · Castaneda & Associates

Price Reduced20Active

$450,000

1 bd · 1 ba · 608 sqft

255 Sunrise Dr 103, Key Biscayne, FL

Maria-Elda Castaneda · Castaneda & Associates

Your Key Biscayne agent

Jonathan Alfonso

Portal Real Estate

Lic. #3306632

Call Jonathan

Price Reduced18Active

$794,000

2 bd · 2 ba · 1,212 sqft

155 Sunrise Dr 4B, Key Biscayne, FL

Joaquin Riera · IMS Consulting & Management

Price Reduced18Active

$794,000

2 bd · 2 ba · 1,212 sqft

155 Sunrise Dr Unit 4B, Key Biscayne, FL

Joaquin Riera · IMS Consulting & Management

Price Reduced24Active

$724,000

1 bd · 2 ba · 895 sqft

155 Ocean Lane Dr Unit 302, Key Biscayne, FL

Melissa Llaury · One Sotheby's International Realty

Price Reduced24Active

$724,000

1 bd · 2 ba · 895 sqft

155 Ocean Lane Dr 302, Key Biscayne, FL

Melissa Llaury · One Sotheby's International Realty

1 2 3

Listing data & MLS disclosures

MiamiSouthFlorida: Listing information provided by MiamiSouthFlorida.
MIAMI REALTORS MLS: The multiple listing information is provided by MIAMI Association of Realtors® from a copyrighted compilation of listings. The compilation of listings and each individual listingare ©2026 MIAMI Association of Realtors®. All Rights Reserved.
The information provided is for consumers’ personal, noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. All properties are subject to prior sale or withdrawal. All information provided is deemed reliable but is not guaranteed accurate, and should be independently verified. Last Updated: 2026-11-13 00:01:00 UTC

Key Biscayne housing market

October 2026 · This period is still settling

Selling at 94.2% of asking price

Buyers here are paying below asking. MLS · 18 sales · as of Oct 30, 2026

Homes on the market · MLS, as of Oct 18, 2026

Median list price: $2,625,000
Homes for sale: 134

Housing stock — every home in the area, not only the ones selling or listed · Assessor records, as of Sep 30, 2026

Median home size: 1,835 sq. ft.

Key Biscayne, FL community profile

Population: 15,327
Median income: $154,457
Housing units: 7,079
People per sq. mi.: 982.5
Area: 15.6 sq. mi.

Source: HJN community data

Explore Key Biscayne homes

By price

Homes Under $800K
Homes Under $900K
Homes Under $1M
Homes Under $1.25M
Homes Under $1.5M
Homes Under $1.75M
Homes Under $2M
Homes Under $2.25M
Homes Under $2.5M
Homes Under $2.75M
Homes Under $3M
Homes Over $3M
Luxury Homes

By bedrooms

2 Bedroom Homes
3 Bedroom Homes
4 Bedroom Homes
5 Bedroom Homes

By type

Single-Family Homes
Condos

By feature

Homes with a Pool
Waterfront Homes

L. Custen Realty, Inc. d/b/a Realty.com/L. Custen Realty CT, LLC d/b/a Realty.com (Tom O’Leary-Broker)(CT properties only), 8323 Southwest Freeway, Suite 900, Houston, Texas 77074

The information provided by this website is for the personal, non-commercial use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Listing data is derived from various Multiple Listing Services; each source MLS and its required disclaimer are shown with the listings on the applicable page. Realty.com is an independently owned and operated brokerage.

Your Key Biscayne agent

Jonathan Alfonso

Portal Real Estate

Lic. #3306632

Call Jonathan

Listing data & MLS disclosures

MiamiSouthFlorida: Listing information provided by MiamiSouthFlorida.
MIAMI REALTORS MLS: The multiple listing information is provided by MIAMI Association of Realtors® from a copyrighted compilation of listings. The compilation of listings and each individual listingare ©2026 MIAMI Association of Realtors®. All Rights Reserved.
The information provided is for consumers’ personal, noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. All properties are subject to prior sale or withdrawal. All information provided is deemed reliable but is not guaranteed accurate, and should be independently verified. Last Updated: 2026-11-13 00:01:00 UTC

Key Biscayne, FL community profile

Population: 15,327
Median income: $154,457
Housing units: 7,079
People per sq. mi.: 982.5
Area: 15.6 sq. mi.

Source: HJN community data

Key Biscayne housing market

October 2026 · This period is still settling

Selling at 94.2% of asking price

Buyers here are paying below asking. MLS · 18 sales · as of Oct 30, 2026

Homes on the market · MLS, as of Oct 18, 2026

Median list price: $2,625,000
Homes for sale: 134

Housing stock — every home in the area, not only the ones selling or listed · Assessor records, as of Sep 30, 2026

Median home size: 1,835 sq. ft.