945 Mariner Dr, Key Biscayne, FL 33149
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Property image
OFF MARKET

945 Mariner Dr
Key Biscayne, FL 33149

  • 6 Beds
  • 6 Baths
  • 5,191 sqft (on 0.34 acres)

$12,406,100

Trulia Estimate
as of Jul 8, 2026
Est. Refi. Payment $81,439/mo*

$12,406,100

Trulia Estimate
as of Jul 8, 2026
Est. Refi. Payment $81,439/mo*
6 Beds
6 Baths
5,191 sqft
(on 0.34 acres)

Local Information

  • Map ViewExplore the area around 945 Mariner Dr.
  • Schools2 Preschool Schools1 Elementary School2 Middle Schools1 High School
  • Shop & Eat
-- mins to
Commute Destination

Description

Experience the ultimate Miami lifestyle in this stunning waterfront residence, featuring an extraordinary dock – a true boater’s paradise. Meticulously remodeled, this elegant home boasts spacious, open areas filled with natural light, great terraces, and impeccable finishes that capture the vibrant allure of Miami. Enjoy breathtaking views from nearly every room, bringing a sense of serenity and connection to the water. With 6 beautiful bedrooms, 6 baths, and a 2-car garage, it’s designed for both luxury and comfort. Outside, a gorgeous pool and a brand-new gazebo create the perfect setting for gatherings and relaxation. Situated on a serene private street in the exclusive paradise of Key Biscayne, this retreat truly offers the best of island living. Embrace your own private sanctuary.
945 Mariner Dr, Key Biscayne, FL 33149 is a 6 bedroom, 6 bathroom, 5,191 sqft single-family home built in 1983. It last sold for $12,700,000 on Apr 28, 2025 (2% below the $12,950,000 asking price). More recently, it was listed as a rental in May 2024 with an asking price of $40,000 per month. That rental listing was removed on May 18, 2024. It is currently off market. The Trulia Estimate is $12,406,100, with a rent estimate of $80,909/month.

Home Highlights

Parking
2 Car Garage
Outdoor
Porch, Patio, Pool
View
Canal
HOA
None
Price/Sqft
No Info
Listed
180+ days ago

Home Details for 945 Mariner Dr

Interior Features

Beds & Baths
Number of Bedrooms: 6Number of Bathrooms: 6Number of Bathrooms (full): 6
Dimensions and Layout
Living Area: 5191 Square Feet
Appliances & Utilities
Appliances: Dishwasher, Disposal, Dryer, Electric Water Heater, Electric Range, Refrigerator, Oven, WasherDishwasherDisposalDryerLaundry: Laundry RoomRefrigeratorWasher
Heating & Cooling
Heating: ElectricHas CoolingAir Conditioning: ElectricHas HeatingHeating Fuel: Electric
Windows, Doors, Floors & Walls
Window: BlindsFlooring: Ceramic Tile
Levels, Entrance, & Accessibility
Stories: 2Entry Location: First Floor Entry, FoyerFloors: Ceramic Tile
View
Has a ViewView: Canal
Security
Security: Smoke Detector

Exterior Features

Exterior Home Features
Roof: ConcretePatio / Porch: Open Porch, PatioFencing: FencedHas a Private Pool
Parking & Garage
Number of Garage Spaces: 2Number of Covered Spaces: 2Has a GarageHas an Attached GarageHas Open ParkingParking Spaces: 2Parking: Circular Driveway,Covered,Driveway,Garage Door Opener
Pool
Pool: In Ground, CommunityPool
Frontage
WaterfrontWaterfront: Ocean Access, Canal Front, WF/Pool/Ocean AccessOn Waterfront
Water & Sewer
Sewer: Public Sewer
Farm & Range
Frontage Length: 0Not Allowed to Raise Horses
Surface & Elevation
Elevation Units: Feet

Property Information

Year Built
Year Built: 1983
Property Type / Style
Property Type: ResidentialProperty Subtype: Single Family ResidenceStructure Type: House, AttachedArchitecture: House,Attached
Building
Building Name: Cape Fla Sub Sec 2Construction Materials: CBS Construction
Property Information
Usage of Home: Unknown/WithheldParcel Number: 2452050110250

Price & Status

Price
List Price: $12,950,000
Status Change & Dates
Off Market Date: Tue Feb 25 2025Possession Timing: Funding

Active Status

MLS Status: Closed

Location

Direction & Address
City: Key BiscayneCommunity: Cape Fla Sub Sec 2
School Information
Elementary School: KeybiscayneHigh School: Mast Academy

Building

Building Area
Building Area: 6526 Square Feet

Community

Community Features: Pool

HOA

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

Lot Information

Lot Area: 0.34 acres

Offer

Contingencies: No ContingenciesListing Terms: All Cash, Conventional

Miscellaneous

Mls Number: A11684771Water ViewWater View: Canal

Additional Information

PoolSource Internet Entire Listing Display
Last check for updates: about 6 hours ago
Listed by Brigitte Nachtigall, (305) 710-9664
One Sotheby's International Realty
Mark Chatburn, (305) 393-6032
One Sotheby's International Realty
Bought with: Giulietta Ulloa, (305) 710-6620, BHHS EWM Realty
Originating MLS: A-Miami Association of REALTORS
Source: MIAMI, MLS#A11684771

Price History for 945 Mariner Dr

DatePriceEventSource
04/28/2025$12,700,000Sold
MIAMI #A11684771
03/25/2025$12,950,000PendingMIAMI #A11684771
02/20/2025$12,950,000PriceChange
MIAMI #A11684771
12/27/2024$13,450,000PriceChange
MIAMI #A11684771
11/08/2024$14,475,000Listed For SaleMIAMI #A11684771
06/29/2024$15,900,000ListingRemovedMIAMI #A11565697
05/18/2024ListingRemovedMIAMI #A11507824
05/09/2024$40,000Listed For RentMIAMI #A11507824
04/09/2024ListingRemovedMIAMI #A11507824
04/09/2024$15,900,000Listed For SaleMIAMI #A11565697
01/03/2024$40,000Listed For RentMIAMI #A11507824
03/04/2021$5,750,000Sold
MIAMI #A10876063
02/17/2021$5,975,000PendingMIAMI #A10876063
12/23/2020$5,975,000ContingentMIAMI #A10876063
12/22/2020$5,975,000PendingToActiveAgent Provided
10/15/2020$5,975,000PendingAgent Provided
07/27/2020$5,975,000PriceChange
Agent Provided
06/15/2020$6,375,000Listed For SaleAgent Provided
01/01/2020$5,875,000ListingRemovedAgent Provided
07/16/2019$5,875,000PriceChange
Agent Provided
02/06/2019$6,375,000Listed For SaleAgent Provided
06/20/2017$6,750,000ListingRemovedAgent Provided
04/19/2016$6,750,000Listed For SaleAgent Provided
03/05/2016$6,975,000ListingRemovedAgent Provided
09/04/2015$6,975,000Listed For SaleAgent Provided

Market trends in Key Biscayne

Last updated May 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
Sale-to-List Price
Price per sq ft
Available listings
167
2
MoM
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Property Tax and Assessment

Year2025
Tax$119,419
Assessment$7,931,195
Home facts updated by county records

Comparable Sales for 945 Mariner Dr

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
0.14
Single-Family Home
$6,500,000
03/31/26
7
7.5
5,528
0.25
Single-Family Home
$21,000,000
02/26/26
6
7
8,031
0.20
Single-Family Home
$5,690,000
06/15/26
6
5
3,584
0.36
Single-Family Home
$6,350,000
07/31/25
5
5.5
3,525
0.39
Single-Family Home
$4,700,000
07/10/25
6
5
3,245
0.44
Single-Family Home
$4,950,000
04/20/26
6
6
3,888
0.19
Single-Family Home
$625,000
04/09/26
6
6
4,142
0.84
Single-Family Home
$10,500,000
07/01/26
5
5.5
5,074
0.46
Single-Family Home
$4,820,000
08/15/25
6
6.5
4,165
0.43
Single-Family Home
$4,200,000
03/27/26
6
5.5
3,436

Nearby homes

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Assigned Schools

These are the assigned schools for 945 Mariner Dr.
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

  • 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. "
  • 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 :/"

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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.