643 Warren Ln
Key Biscayne, FL 33149
- 5 Beds
- 4 Baths
- 3,150 sqft
5 Beds
4 Baths
3,150 sqft
Home Value
Trulia Estimate
$4.18MSince last month
Increased$62K (+1.5%)Since last year
Increased$387K (+10.2%)Since last sale
Increased$2M (+78.1%)Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.
Trulia Estimate
The of this home's value increased by +42% in the last 10 years
| Month | Estimated value |
|---|---|
2026 | |
| August 2026 | $4.19M |
| July 2026 | $4.12M |
| June 2026 | $4.19M |
| May 2026 | $4.07M |
| April 2026 | $3.99M |
| March 2026 | $3.9M |
| February 2026 | $3.85M |
| January 2026 | $3.74M |
2025 | |
2024 | |
2023 | |
2022 | |
2021 | |
2020 | |
2019 | |
2018 | |
2017 | |
2016 | |
Comparable sales
These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.06 | Single-Family Home | $3,125,000 | 03/09/26 | 5 | 3.5 | 2,429 | |
0.08 | Single-Family Home | $3,500,000 | 01/16/26 | 4 | 3.5 | 2,775 | |
0.09 | Single-Family Home | $3,475,000 | 01/27/26 | 5 | 4.5 | 2,320 | |
0.07 | Single-Family Home | $4,200,000 | 03/27/26 | 6 | 5.5 | 3,436 | |
0.10 | Single-Family Home | $3,700,000 | 01/27/26 | 5 | 5 | 3,962 | |
0.23 | Single-Family Home | $4,400,000 | 04/08/26 | 5 | 5 | 3,230 | |
0.21 | Single-Family Home | $4,475,000 | 04/10/26 | 4 | 3.5 | 3,666 | |
0.29 | Single-Family Home | $3,000,000 | 04/20/26 | 4 | 3 | - | |
0.23 | Single-Family Home | $4,400,000 | 04/16/26 | 4 | 2.5 | 3,300 | |
0.15 | Single-Family Home | $4,950,000 | 04/20/26 | 6 | 6 | 3,888 |
Nearby home prices
Get a sense of expected prices in the area by checking the value of nearby homes.Address | Distance | Price | Bed | Bath | Sqft | Status |
|---|---|---|---|---|---|---|
0.07 | $4,200,000 | 6 | 5.5 | 3,436 | Recently Sold | |
0.03 | $6,183,900 | 5 | 5.5 | 3,525 | Off Market | |
0.08 | $3,500,000 | 4 | 3.5 | 2,775 | Recently Sold | |
0.05 | $2,806,400 | 4 | 4 | 2,488 | Off Market | |
0.07 | $3,302,400 | 5 | 3 | 2,537 | Off Market | |
0.11 | $5,995,000 | 5 | 5.5 | 3,762 | For Sale | |
0.10 | $3,700,000 | 5 | 5 | 3,962 | Recently Sold | |
0.07 | $5,478,000 | 4 | 3.5 | 3,549 | For Sale | |
0.12 | $3,633,400 | 4 | 3 | 2,473 | Off Market | |
0.06 | $3,125,000 | 5 | 3.5 | 2,429 | Recently Sold | |
0.09 | $3,475,000 | 5 | 4.5 | 2,320 | Recently Sold | |
0.13 | $4,712,900 | 6 | 6.5 | 4,165 | Off Market |
Local Information
-- mins to
Home Highlights
Property Type
Single-Family Home
Year Built
1996
Living Area
3,150 sqft
Price/Sqft
$1,327
Parking
Garage
About this House
Wood & Marble floors, 10-12 ft ceilings, 4 Bedrooms could convert to 5 Bedrooms, 4 1/2 Bathrooms, Pool with Beautiful Covered Patio, Lush Yard, 3621 sq ft, Storm Shutters. Community Center & Beach Club available. May be purchased with or without furniture. Sophisticated 2 story home has finest details. The elegant entry leads you into this dramatic home with world charm. Private formal dinning room, kitchen opens to family room, elegant living room adjacent to study. The master suite is private and has a lovely retreat balcony. Additional bedrooms also come with retreat balconies.
643 Warren Ln, Key Biscayne, FL 33149 is a 5 bedroom, 4 bathroom, 3,150 sqft single-family home built in 1996. It last sold for $2,350,000 on Aug 4, 2020. It is currently off market. The Trulia Estimate is $4,179,300, with a rent estimate of $20,544/month.
Home Details for 643 Warren Ln
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Levels, Entrance, & Accessibility Stories: 2 |
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Exterior Home Features Roof: OtherExterior: OtherPatio |
Pool Pool |
Parking & Garage GarageParking: Garage |
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Year Built Year Built: 1996Year Updated: 1996 |
Property Type / Style Property Type: Single Family Home |
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Units in Building: 1 |
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Lot Area: 7492 sqft |
Price and Tax history
| Date | Event | Price |
|---|---|---|
Aug 4, 2020 Source: N/A | Sold | $2,350,000 |
Jan 3, 2012 Source: N/A | Sold | $1,700,000 |
Jul 10, 2010 Source: Agent Provided | ListingRemoved | $2,250,000 |
Jun 29, 2010 Source: Agent Provided | Listed For Sale | $2,250,000 |
Jan 11, 1995 Source: N/A | Sold | $272,000 |
| Year | Property tax | Tax assessment |
|---|---|---|
| 2025 | $30,491 | $2,859,107 |
Home facts updated by county records
Market trends in Key Biscayne
Last updated July 2026
Avg. sale price
$1.56M
$26.67KMoM
Sale-to-List Price
94.6%
Price per sq ft
$981
$37MoM
Available listings
144
15MoM
Around this home
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.
LGBTQ Local Legal Protections
LGBTQ Local Legal Protections
Frequently asked questions about 643 Warren Ln
- What is 643 Warren Ln estimated to be worth?Trulia's estimated value for 643 Warren Ln in Key Biscayne, FL is $4,179,300.
- What is the price history for 643 Warren Ln?643 Warren Ln in Key Biscayne, FL last sold for $2,350,000 in August 2020.
- 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 643 Warren Ln have a pool?Yes, 643 Warren Ln in Key Biscayne, FL has a pool.
- How big is the lot at 643 Warren Ln?The lot at 643 Warren Ln in Key Biscayne, FL is about 0.17 acres (7,492 sq ft).