For sale

$6,950,000

685 Harbor Ln, Key Biscayne, FL 33149

5beds

5,421sqft

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Single Family Residence

Built in 2001

9,000 Square Feet Lot

$6,447,600 Zestimate^®

$1,282/sqft

$-- HOA

What's special

Bright interiorsKitchen includes an islandExpansive covered terracesGenerous green spaceDouble ovensSub-zero refrigeratorWine cooler

Timeless colonial-style residence, also known as Villa Rosa, set on a rare 12,200 sqft lot in the heart of Key Biscayne. Designed by renowned architect Cesar Molina, this 5-bedroom home is located on a very quiet, low-traffic street, offering privacy within a well-established, family-friendly neighborhood. The home features double balconies, bright interiors, and a functional indoor-outdoor layout with expansive covered terraces. The kitchen includes an island, Sub-Zero refrigerator, wine cooler, double ovens, and two dishwashers. The primary suite offers a private terrace, oversized walk-in closet with safe, and dual bathrooms with sauna. The spacious backyard includes a pool and generous green space. Additional features include maid’s quarters and construction that meets hurricane code requirements. Ideally located near beaches, parks, and top-rated schools, this is a rare opportunity to own a well-designed home on one of Key Biscayne’s most desirable streets.

70 days

169

5

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Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 5
Bathrooms: 6
Full bathrooms: 5
1/2 bathrooms: 1

Rooms

Room types: Family Room, Great Room

Heating

Central

Cooling

Central Air

Appliances

Included: Dishwasher, Disposal, Dryer, Electric Water Heater, Ice Maker, Gas Range, Refrigerator

Features

Bar, Closet Cabinetry, Kitchen Island, Entrance Foyer, Walk-In Closet(s), Storage
Flooring: Marble, Tile, Wood
Doors: High Impact Doors
Windows: Hurricane Shutters, Impact Glass, Plantation Shutters

Interior area

Total structure area: 6,971
Total interior livable area: 5,421 sqft

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Property

Parking

Total spaces: 1
Parking features: Driveway
Attached garage spaces: 1
Has uncovered spaces: Yes

Features

Stories: 2
Entry location: First Floor Entry,Foyer
Patio & porch: Open Porch, Patio
Exterior features: Lighting, Balcony
Has private pool: Yes
Pool features: In Ground, Pool Only
Has view: Yes
View description: Other

Lot

Size: 9,000 Square Feet
Features: 1/4 To Less Than 1/2 Acre Lot

Details

Parcel number: 2452050011330
Zoning: 0100

Construction

Type & style

Home type: SingleFamily
Property subtype: Single Family Residence

Materials

Piling Construction
Foundation: Pillar/Post/Pier, Raised
Roof: Aluminum

Condition

Year built: 2001

Utilities & green energy

Sewer: Public Sewer
Water: Municipal Water

Community & HOA

Community

Features: Beach Club Member Available
Subdivision: Biscayne Key Estates

HOA

Has HOA: No

Location

Region: Key Biscayne

Financial & listing details

Price per square foot: $1,282/sqft
Tax assessed value: $3,843,240
Annual tax amount: $40,335
Date on market: 4/16/2026
Listing terms: All Cash,Conventional

Estimated market value

$6,447,600

$6.13M - $6.77M

$27,595/mo

Price history

Date	Event	Price
4/16/2026	Listed for sale	$6,950,000+124.2%$1,282/sqft
Source: MIAMI #A11997896 Report a problem
6/6/2019	Sold	$3,100,000-11%$572/sqft
Source: Public Record Report a problem
9/4/2018	Price change	$3,485,000-7.1%$643/sqft
Source: Miller Eaton Inc #A10532288 Report a problem
5/8/2018	Price change	$3,750,000-5.7%$692/sqft
Source: Miller Eaton Inc #A10364431 Report a problem
10/30/2017	Listed for sale	$3,975,000-9.7%$733/sqft
Source: Miller Eaton Inc #A10364431 Report a problem
8/12/2017	Listing removed	$4,400,000$812/sqft
Source: Miller Eaton Inc #A10238699 Report a problem
6/7/2017	Listed for sale	$4,400,000$812/sqft
Source: Miller Eaton Inc #A10238699 Report a problem
3/13/2017	Listing removed	$4,400,000$812/sqft
Source: Richcott Realty LLC #A10238699 Report a problem
3/10/2017	Listed for sale	$4,400,000$812/sqft
Source: Richcott Realty LLC #A10238699 Report a problem

Public tax history

Year	Property taxes	Tax assessment
2025	$40,335 +2.3%	$2,528,159 +2.9%
2024	$39,423 +1.4%	$2,456,909 +3%
2023	$38,898 +4.3%	$2,385,349 +3%
2022	$37,299 -0.3%	$2,315,873 +3%
2021	$37,429 +4%	$2,248,421 +1.4%
2020	$35,980 +39%	$2,217,378 +38.4%
2019	$25,894 +5.4%	$1,602,582 +1.9%
2018	$24,573	$1,572,701 +2.1%
2017	$24,573 +1.3%	$1,540,354 +2.1%
2016	$24,265 -1.7%	$1,508,672 +0.7%
2015	$24,691 -1.5%	$1,498,185 +0.8%
2014	$25,070 +3.2%	$1,486,295 +1.5%
2013	$24,303 +0%	$1,464,331 +1.7%
2012	$24,303 +2.3%	$1,439,854 +3%
2011	$23,750 -5.5%	$1,397,917 +1.5%
2010	$25,139 -31%	$1,377,259 -32.4%
2009	$36,433 +63.2%	$2,038,572 +59.8%
2007	$22,324 -6.8%	$1,275,692
2006	$23,943	--
2005	$23,943 +1.2%	--
2004	$23,657 +3.5%	--
2003	$22,855 +231.4%	--
2002	$6,897	--
2001	$6,897	--

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HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.

Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.

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