310 Harbor Ct, Key Biscayne, FL 33149
FOR SALE

310 Harbor Ct
Key Biscayne, FL 33149

  • 4 Beds
  • 2 Baths
  • 2,175 sqft

$3,150,000

Est. Mortgage $20,176/mo*

$3,150,000

Est. Mortgage $20,176/mo*
4 Beds
2 Baths
2,175 sqft

Local Information

Map showing home location
© Google
-- mins to
Commute Destination

Description

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.

Home Highlights

Parking
Open Parking
Outdoor
No Info
View
Garden
HOA
None
Price/Sqft
$1,448
Listed
93 days ago

Home Details for 310 Harbor Ct

Interior Features

Beds & Baths
Number of Bedrooms: 4Number of Bathrooms: 2Number of Bathrooms (full): 2
Dimensions and Layout
Living Area: 2175 Square Feet
Appliances & Utilities
Appliances: Dishwasher, Dryer, WasherDishwasherDryerWasher
Heating & Cooling
Heating: CentralHas CoolingAir Conditioning: Central AirHas HeatingHeating Fuel: Central
Windows, Doors, Floors & Walls
Flooring: Ceramic Tile, Marble
Levels, Entrance, & Accessibility
Entry Location: First Floor EntryFloors: Ceramic Tile, Marble
View
Has a ViewView: Garden

Exterior Features

Exterior Home Features
Roof: OtherFencing: FencedNo Private Pool
Parking & Garage
No GarageHas Open ParkingParking: Circular Driveway
Pool
Pool: R30-No Pool/No Water
Frontage
Not on Waterfront
Water & Sewer
Sewer: Other
Farm & Range
Not Allowed to Raise Horses
Surface & Elevation
Elevation Units: Feet

Days on Market

Days on Market: 93

Property Information

Year Built
Year Built: 1958
Property Type / Style
Property Type: ResidentialProperty Subtype: Single Family ResidenceStructure Type: House, DetachedArchitecture: Other
Building
Building Name: Tropical Isle Homes Sub 4Construction Materials: CBS Construction
Property Information
Parcel Number: 2442320063520

Price & Status

Price
List Price: $3,150,000Price Per Sqft: $1,448
Status Change & Dates
Possession Timing: Funding

Active Status

MLS Status: Active

Location

Direction & Address
City: Key BiscayneCommunity: Tropical Isle Homes Sub 4
School Information
Elementary School: KeybiscayneJr High / Middle School: Ponce De LeonHigh School: Coral Gables

Agent Information

Listing Agent
Listing ID: A11959280

Building

Building Area
Building Area: 2837 Square Feet

Community

Community Features: Street Lights

HOA

Association for this Listing: A-Miami Association of REALTORSNo HOA

Lot Information

Lot Area: 7500 sqft

Offer

Listing Terms: All Cash, Conventional

Miscellaneous

Mls Number: A11959280

Additional Information

Street LightsSource Internet Entire Listing Display
Last check for updates: about 17 hours ago
Listing courtesy of Carlos Coto, (305) 803-3059
One Sotheby's International Realty
Originating MLS: A-Miami Association of REALTORS
Source: MIAMI, MLS#A11959280
Also Listed on MIAMI.

Price History for 310 Harbor Ct

DatePriceEventSource
02/09/2026$13,500Listed For RentMIAMI #A11961939
02/05/2026$3,150,000Listed For SaleMIAMI #A11959280
02/26/2024ListingRemovedZillow Rentals
01/03/2024$11,000PriceChange
MIAMI #A11420803
11/07/2023$12,000Listed For RentMIAMI #A11420803
11/07/2023ListingRemovedZillow Rentals
09/14/2023$12,000PriceChange
MIAMI #A11420803
07/20/2023$13,500Listed For RentMIAMI #A11420803
04/26/2016$6,900ListingRemovedAgent Provided
01/15/2016$6,900PriceChange
Agent Provided
11/03/2015$7,200Listed For RentAgent Provided
12/24/2014$6,900ListingRemovedAgent Provided
09/29/2014$6,900PriceChange
Agent Provided
08/29/2014$7,500Listed For RentAgent Provided
09/28/2011$5,200ListingRemovedAgent Provided
09/07/2011$5,200Listed For RentAgent Provided

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Property Tax and Assessment

Year2024
Tax$30,626
Assessment$2,005,360
Home facts updated by county records

Comparable Sales for 310 Harbor Ct

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
0.11
Single-Family Home
$3,150,000
07/18/25
4
3
2,063
0.13
Single-Family Home
$2,600,000
09/19/25
4
3
1,570
0.32
Single-Family Home
$3,726,000
07/07/25
4
3
2,473
0.33
Single-Family Home
$3,548,500
06/27/25
3
3
2,429
0.12
Single-Family Home
$4,100,000
07/28/25
5
5
3,596
0.30
Single-Family Home
$2,470,000
06/05/25
3
3
1,464

Assigned Schools

These are the assigned schools for 310 Harbor Ct.
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

  • 85 % Say people would walk alone at night

  • 85 % Say there are sidewalks

  • 80 % Say there's holiday spirit

  • 79 % Say it's quiet

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

  • 68 % Say streets are well-lit

  • 68 % Say parking is easy

  • 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

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. "
  • Mariafedc
    "There are lots of places that are dog friendly. There’s a dog park. Many dog owners live in the area. "
  • Lladom
    "Very safe and friendly community. Excellent for growing up kids. Traffic is the downside. Best town in South Florida by large."
  • Ericazc
    "Christmas, 4th of July, and many other beautiful family events happens in the island. Great place for the kids. "
  • 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. "
  • 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. "
  • 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"
  • Mati P.
    "This is a safe neighborhood, kids walk by themselves all the time. It makes me feel safe to life here. "
  • 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 "
  • Adrian.grottola
    "Very friendly for pets (dogs) with great special spaces for them and many dog walkers in the island."
  • 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. "
  • Ivan M.
    "Save and quite perfect place for a family. There are as a public transportation electric’s cars around the island. "
  • Mayra
    "Great neighborhood! They celebrate Halloween, Christmas, Easter and much more! A lot of activities and sports for kids"
  • Efrao
    "Great place to live and I don’t commute everything is close by and i walk to work. Public transportation is great "
  • Kikisammataro
    "Halloween is a big event. Saturday has a farmers market. Kids are safe. Many schools and parks. Including dog park. "
  • 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."
  • 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. "
  • 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...."
  • Fabio
    "Great Place to leave. Good people, privacy, no crime. Walkable area, beach access, wide kind of services. Thanks "
  • 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. "
  • Dcas
    "Great area for kids and young families. Very safe neighborhood and extremely easy to walk or ride a bike anywhere "
  • Kiragrossman
    "They would absolutely love the dog park. There are two sides for bigger dogs and smaller dogs. Everyone is very friendly "
  • Kiragrossman
    "This is a Great place to live. The neighborhoods are safe and it’s a great location. Great for children. Good restaurants shops"
  • Sandra S.
    "I love this neighborhood, I have everything I need is quiet and safe, walk to most places and has two state parks"
  • Kimbokak
    "Friendly, kind neighbors, close to everything, and safe. You can do pretty much everything on the island, but it is more expensive."
  • 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. "
  • 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 :/"

LGBTQ Local Legal Protections

Carlos Coto, One Sotheby's International Realty
Agent Phone: (305) 803-3059
IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed.
310 Harbor Ct, Key Biscayne, FL 33149 is a 4 bedroom, 2 bathroom, 2,175 sqft single-family home built in 1958. This property is currently available for sale and was listed by MIAMI on Feb 5, 2026. The MLS # for this home is MLS# A11959280.