
Property photos —
MIAMI REALTORS® MLS360 Harbor Lane, Key Biscayne, FL 33149
- Beds
- 6
- Baths
- 6
- Sqft
- 4,341
- Home type
- Single Family Residence
- Year built
- 2025
- Lot size
- 9,148 sqft
- Price / sqft
- $2,292
- HOA
- $0/mo
- Community
- BISCAYNE KEY ESTATES
Property description
Discreetly set in the heart of Key Biscayne — one of Miami’s most coveted island communities — this elegant modern two-story residence offers 5,156 SF of total space on a lush 9,300 SF lot with 6 bedrooms, 5.5 bathrooms, and a private office, perfectly balancing refined design with the relaxed island lifestyle. A travertine staircase entry and wrap-around porch with modern glass railings set a sophisticated tone, leading inside to soaring ceilings, herringbone oak floors by Listone Giordano, floor-to-ceiling sliding doors, and Lutron lighting. The open-concept living, dining, and family areas flow seamlessly to the outdoors. The chef’s kitchen showcases a striking fluted marble island with curved-edge countertops, floor-to-ceiling cabinetry by Design It, and a full Wolf and Sub-Zero appliance suite. The primary suite features a private terrace, dual custom walk-in closets, a dry sauna, and a show-stopping bath with aquamarine quartzite sourced from ARCA, dual Waterworks vanities, and a frameless glass shower. Outside, a covered terrace with fluted wood-paneled ceiling, summer kitchen with built-in grill and pizza oven, and a heated saltwater pool with marble deck and Baja ledge create the ultimate island retreat. Professionally designed landscaping and enchanting exterior uplighting illuminate the lush gardens, creating picturesque views through the home’s expansive glass walls, particularly after sunset. Integrated sound and four AC units complete this exceptional offering.
Listing activity
- Days on market
- 6
- Listed
- Oct 19, 2026
- MLS listing updated
- Oct 23, 2026
- Feed last checked
- Just now
Listed by Judith H Zeder · Coldwell Banker Realty
Map
Map location is based on MLS-supplied coordinates. Verify the location before relying on it.
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms
- 6
- Bathrooms
- 6
- Bathrooms (decimal)
- 5.5
- Full bathrooms
- 5
- Half bathrooms
- 1
Rooms & features
- Rooms
- 5
- Interior features
- Built-in Features, Closet Cabinetry, Entrance Foyer, High Ceilings, Walk-In Closet(s), Other
- Flooring
- Marble, Wood
- Appliances
- Dishwasher, Disposal, Dryer, Electric Range, Microwave, Oven, Refrigerator, Washer, Water Purifier, Other
- Furnished
- Unfurnished
- Window features
- Blinds
- Other equipment
- Other
Heating & cooling
- Heating
- Central, Electric
- Cooling
- Central Air, Electric
Property
Parking
- Garage spaces
- 0
- Carport spaces
- 2
- Carport
- Yes
- Covered spaces
- 2
- Parking features
- Attached Carport, Carport, Driveway, Paver Block
- Attached garage
- No
Exterior
- Stories
- 2
- Building area
- 5,156 sqft
- Entry level
- 1
- Patio & porch
- Deck
- Exterior features
- Balcony, Built-in Barbecue, Lighting
- Pool
- Yes
- Pool features
- Heated, In Ground
- View
- Garden, Pool
- Waterfront property
- No
Lot
- Lot size
- 9,148 sqft
- Lot size (acres)
- 0.21 acres
- Lot dimensions
- 9300
- Zoning
- 0100
Construction
Type & style
- Home type
- Single Family Residence
- Architectural style
- Contemporary
- Year built
- 2025
- New construction
- No
Materials
- Construction
- Block, Other
- Roof
- Flat, Tile
- Property condition
- Resale
- Levels
- Two
- Faces
- Northeast
Utilities & green energy
Utilities
- Sewer
- Public Sewer
- Water
- Public
Community & HOA
Community
- Subdivision
- BISCAYNE KEY ESTATES
- MLS area
- 2520
- Pets allowed
- Yes
- 55+ community
- No
Association
- Has association
- No
- Estimated monthly dues
- $0
- Amenities
- None
Lease details
Not reported by the listing source.
Location
Area details
- City
- Key Biscayne
- County
- Miami-Dade
- ZIP code
- 33149
Manufactured home details
Not reported by the listing source.
Financial & listing details
Listing
- MLS number
- A12104430
- Possession
- Negotiable
- Original list price
- $9,950,000
- Parcel number
- 2452050011490
- Annual property tax
- $31,314
- Tax year
- 2025
- Tax legal description
- 5 & 6 55 42 BISCAYNE KEY ESTS PB 50-61 LOT 3 BLK 10 LOT SIZE 8000 SQ FT OR 12488-3411 0485 4 COC 24947-2228 09 2006 5
Additional MLS details
Reported by the listing source
- Association Amenities
- None
- Association
- No
- Bathrooms Total Decimal
- 5.5
- Bathrooms Total Integer
- 6
- Building Area Total
- 5156
- Construction Materials
- Block, Other
- County Or Parish
- Miami-Dade
- Days On Market
- 6
- Direction Faces
- Northeast
- Elementary School
- Key Biscayne K-8
- High School
- Coral Gables
- List Price
- 9950000
- Listing Contract Date
- 2026-10-19
- Living Area
- 4341
- Lot Size Acres
- 0.21
- Lot Size Area
- 9300
- Lot Size Dimensions
- 9300
- MLSArea Major
- 2520
- Middle Or Junior School
- Ponce De Leon
- Mls Status
- Active
- On Market Date
- 2026-10-19
- Patio And Porch Features
- Deck
- Photos Count
- 16
- Postal Code
- 33149
- Property Sub Type
- Single Family Residence
- Property Type
- Residential
- Rooms Total
- 5
- Senior Community
- No
- Standard Status
- Active
- State Or Province
- FL
- Status Change Timestamp
- 2026-10-19T04:00:00Z
- Stories Total
- 2
- Subdivision Name
- BISCAYNE KEY ESTATES
- Water Source
- Public
- Tax Annual Amount
- 31314
- Bathrooms Full
- 5
- Pool Private
- Yes
- Bedrooms Total
- 6
- Waterfront
- No
- Bathrooms Half
- 1
Market value
Price history
| Date | Event | Price |
|---|---|---|
| Oct 19, 2026 | ListedMIAMI REALTORS® MLS | $9,950,000$2,292/sqft |
Public tax history
| Year | Property taxes | Assessment |
|---|---|---|
| 2025 | $31,314 | — |
Payment calculator
- Principal & interest
- $51,628
- Property taxes
- $2,610
- Insurance
- $4,975
- Association dues
- $0
Live national rate context is displayed below through Mortgage News Daily’s official widget. The calculator rate remains a separate assumption until licensed machine-readable access is connected. This is not a loan offer.
Neighborhood
Area
BISCAYNE KEY ESTATESKey Biscayne · Miami-Dade County · 33149
Climate risk
—No licensed climate-risk source is connected.
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