340 Harbor Ct, Key Biscayne, FL 33149
Property image
Property image
OFF MARKET

340 Harbor Ct
Key Biscayne, FL 33149

  • 4 Beds
  • 3 Baths
  • 2,175 sqft

$3,065,400

Trulia Estimate
as of Aug 23, 2026

$3,065,400

Trulia Estimate
as of Aug 23, 2026
  • 4 Beds
  • 3 Baths
  • 2,175 sqft

Home Highlights

Property Type
Single-Family Home
Living Area
2,175 sqft
Price/Sqft
$1,409

Local Information

  • Map ViewExplore the area around 340 Harbor Ct.
  • Schools2 Preschool Schools1 Elementary School2 Middle Schools1 High School
  • Shop & Eat
-- mins to
Commute Destination

About this House

Remodeled 4-bedroom, 2-bath custom-built home featuring an open foyer entry, separate living and dining rooms, and an eat-in kitchen with wood cabinetry and granite countertops. Spacious primary suite with dual sinks in the en-suite bath. Enjoy a large covered terrace, perfect for outdoor living.
340 Harbor Ct, Key Biscayne, FL 33149 is a 4 bedroom, 3 bathroom, 2,175 sqft single-family home. It last sold for $223,000 on Oct 1, 1980 (1,552% above the $13,500 asking price). More recently, it was listed as a rental in April 2026 with an asking price of $13,500 per month. That rental listing was removed on May 3, 2026. It is currently off market. The Trulia Estimate is $3,065,400, with a rent estimate of $7,978/month.

Home Details for 340 Harbor Ct

Interior Features

Heating & Cooling
Heating: Forced AirAir ConditioningCooling System: Central AirHeating Fuel: Forced Air
Appliances & Utilities
DishwasherDryerMicrowaveRefrigeratorWasher
Levels, Entrance, & Accessibility
Floors: Tile

Property Information

Property Type / Style
Property Type: Single Family Home

Rental Terms, Policies & Fees

Lease Term: 1 YearAvailable: now

Comparable Sales for 340 Harbor Ct

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
335 Harbor Dr, Key Biscayne, FL
0.05
Single-Family Home
$4,820,000
03/16/26
4
3
2,959 sqft
361 W Heather Dr, Key Biscayne, FL
0.09
Single-Family Home
$2,600,000
09/19/25
4
3
1,570 sqft
401 Warren Ln, Key Biscayne, FL
0.21
Single-Family Home
$3,000,000
04/20/26
4
3
-
315 W Palmwood Ln, Key Biscayne, FL
0.19
Single-Family Home
$4,400,000
04/16/26
4
2.5
3,300 sqft
340 Ridgewood Rd, Key Biscayne, FL
0.24
Single-Family Home
$3,550,000
03/12/26
4
4
2,699 sqft
310 Greenwood Dr, Key Biscayne, FL
0.09
Single-Family Home
$3,000,000
05/06/26
3
2
1,304 sqft
355 Redwood Ln, Key Biscayne, FL
0.14
Single-Family Home
$2,800,000
06/30/26
3
2
1,403 sqft
301 Redwood Ln, Key Biscayne, FL
0.16
Single-Family Home
$2,600,000
06/29/26
3
2
1,333 sqft
465 Hampton Ln, Key Biscayne, FL
0.27
Single-Family Home
$4,475,000
04/10/26
4
3.5
3,666 sqft
600 Allendale Rd, Key Biscayne, FL
0.38
Single-Family Home
$3,500,000
01/16/26
4
3.5
2,775 sqft

Nearby homes

Get a sense of prices in the area by checking nearby homes.
Skip to last item
Skip to first item

Around this home

View nearby schools on GreatSchools
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

What Locals Say about Key Biscayne

At least 116 Trulia users voted on each feature.

  • 94 % Say it's walkable to grocery stores

  • 94 % Say kids play outside

  • 90 % Say it's dog friendly

  • 90 % Say it's walkable to restaurants

  • 86 % Say people would walk alone at night

  • 86 % Say there are sidewalks

  • 79 % Say it's quiet

  • 79 % Say there's holiday spirit

  • 76 % Say they plan to stay for at least 5 years

  • 68 % Say parking is easy

  • 67 % Say streets are well-lit

  • 60 % Say there are community events

  • 58 % Say neighbors are friendly

  • 54 % Say yards are well-kept

  • 52 % Say there's wildlife

  • 50 % Say car is needed

Sourced by Trulia users. Learn more about our methodology.
  • Othoniel Marlieri
    "Key Biscayne os a perfect place to leave, but need more attention about basic things like a Super Market and safe environment. "
    0
    Flag
  • Mariafedc
    "There are lots of places that are dog friendly. There’s a dog park. Many dog owners live in the area. "
    0
    Flag
  • Lladom
    "Very safe and friendly community. Excellent for growing up kids. Traffic is the downside. Best town in South Florida by large."
    0
    Flag
  • Ericazc
    "Christmas, 4th of July, and many other beautiful family events happens in the island. Great place for the kids. "
    1
    Flag
  • Deborah B.
    "Have been spending winters here for 53 years. Love the family focus, beautiful beaches and public amenities. Thoughtful services like free Freebee pick ups and transportation to shopping make the Key accessible for teens to seniors. "
    0
    Flag
  • Mati P.
    "Its beautiful, peaceful and safe. I feel great living here. It’s lush, people are friendly, and respectful. It’s a great place to raise a family. The community is very pretty, Gardenia are manicured. There’s beautiful beaches and gorgeous homes. The school is pretty good as well. "
    2
    Flag
  • Ayishamartins
    "Some places do not allow dogs but there is a dog park weather like a bunch of dogs and mostly it’s pretty nice"
    1
    Flag
  • Mati P.
    "This is a safe neighborhood, kids walk by themselves all the time. It makes me feel safe to life here. "
    1
    Flag
  • Luis D.
    "Halloween’s decoration and fully of events in that day. Many sports in Village green. The community center has many events for all the family "
    0
    Flag
  • Adrian.grottola
    "Very friendly for pets (dogs) with great special spaces for them and many dog walkers in the island."
    0
    Flag
  • Mathew P.
    "The unity and the sense of community. The safety and sense of family oriented households that attribute to a beautiful place to live. "
    0
    Flag
  • Ivan M.
    "Save and quite perfect place for a family. There are as a public transportation electric’s cars around the island. "
    1
    Flag
  • Mayra
    "Great neighborhood! They celebrate Halloween, Christmas, Easter and much more! A lot of activities and sports for kids"
    0
    Flag
  • Efrao
    "Great place to live and I don’t commute everything is close by and i walk to work. Public transportation is great "
    0
    Flag
  • Kikisammataro
    "Halloween is a big event. Saturday has a farmers market. Kids are safe. Many schools and parks. Including dog park. "
    0
    Flag
  • Mayra
    "This is a very safe family neighborhood. Kids run freely and there’s a lot of activities for them. The school is great but the classrooms have more students than it should."
    0
    Flag
  • Ljsklein
    "My building is dog friendly. It seems like most of the people have dogs and love to walk them. We all clean up after our dogs. There’s poop bags in containers around the building with a place to dispose of them. There is also a dog park on the Key. "
    0
    Flag
  • Maria
    "I don’t have dogs. There’s a very nice dog park right next to the green field. Dogs are not allowed in the field, that is why they have their dog park, but the many owners don’t follow the rules which is very annoying. Most of all when you get the smell when exercising...."
    0
    Flag
  • Fabio
    "Great Place to leave. Good people, privacy, no crime. Walkable area, beach access, wide kind of services. Thanks "
    0
    Flag
  • Dani.montenegro
    "I can’t give my opinion because I don’t have dogs, cat or any other pet. And there are many dog owners in KB but most of them are not very respectful with people who don’t. "
    0
    Flag
  • Dcas
    "Great area for kids and young families. Very safe neighborhood and extremely easy to walk or ride a bike anywhere "
    0
    Flag
  • Kiragrossman
    "They would absolutely love the dog park. There are two sides for bigger dogs and smaller dogs. Everyone is very friendly "
    0
    Flag
  • Kiragrossman
    "This is a Great place to live. The neighborhoods are safe and it’s a great location. Great for children. Good restaurants shops"
    0
    Flag
  • Sandra S.
    "I love this neighborhood, I have everything I need is quiet and safe, walk to most places and has two state parks"
    1
    Flag
  • Kimbokak
    "Friendly, kind neighbors, close to everything, and safe. You can do pretty much everything on the island, but it is more expensive."
    1
    Flag
  • Garandrew
    "I am visiting for vacations and love this place. Nice neighborhood and friendly people. Very likely I will recommend it to my friends and family. "
    0
    Flag
  • Thengea
    "If you don't have to commute out of the island it's wonderful. Otherwise, every event causes so much traffic. Living on an island is a blessing but the peoole really don't say hello or even make eye contact at the stores or parks :/"
    0
    Flag

LGBTQ Local Legal Protections

Price and Tax history

DateEventPrice
May 3, 2026
Source: Zillow Rentals
ListingRemoved
$13,500
Apr 9, 2026
Source: Zillow Rentals
Listed For Rent
$13,500
Oct 1, 1980
Source: N/A
Sold
$223,000

Frequently asked questions about 340 Harbor Ct

  • What is 340 Harbor Ct estimated to be worth?
    Trulia's estimated value for 340 Harbor Ct in Key Biscayne, FL is $3,065,400.
  • What is the price history for 340 Harbor Ct?
    340 Harbor Ct in Key Biscayne, FL last sold for $223,000 in October 1980.
  • Is Key Biscayne a buyer's or seller's market?
    Key Biscayne is currently a buyer's market, based on recent for-sale activity.
  • What's the median sale price in Key Biscayne?
    The median sale price in Key Biscayne is $1.56M. That is down $26.67K from the prior month.
  • Does 340 Harbor Ct have air conditioning?
    Yes, 340 Harbor Ct in Key Biscayne, FL has air conditioning.
  • Does 340 Harbor Ct have laundry facilities?
    Yes, 340 Harbor Ct in Key Biscayne, FL has in-unit laundry.

Homes for rent near 340 Harbor Ct

Skip to last item
Skip to first item

Affordability

TIP:Try to keep your rent within a third of your gross household income. Learn why in our Renter's Guide.
For this property
PER YEAR
is the suggested income
Win over prospective landlords with your smart budgeting. As a good rule of thumb, ideally you would have at least three times your monthly rent in combined household income.
Skip to last item
  • Results are loading
Skip to first item