400 Harbor Dr
Key Biscayne, FL 33149
- 5 Beds
- 4 Baths
- 8,039 sqft (on 0.52 acres)
5 Beds
4 Baths
8,039 sqft
(on 0.52 acres)
Home Value
Trulia Estimate
$31.9MSince last month
Increased$603K (+1.9%)Since last year
Increased$17M (+117.6%)Since last sale
Increased$31M (+6,283.4%)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 +219% in the last 10 years
| Month | Estimated value |
|---|---|
2026 | |
| August 2026 | $31.92M |
| July 2026 | $31.32M |
| June 2026 | $31.51M |
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 |
|---|---|---|---|---|---|---|---|
0.12 | Single-Family Home | $4,820,000 | 03/16/26 | 4 | 3 | 2,959 | |
0.29 | Single-Family Home | $17,500,000 | 07/08/26 | 7 | 7.5 | 6,240 | |
0.53 | Single-Family Home | $1,200,000 | 06/05/26 | 4 | 4.5 | 3,241 | |
0.18 | Single-Family Home | $4,400,000 | 04/08/26 | 5 | 5 | 3,230 | |
0.28 | Single-Family Home | $23,500,000 | 07/06/26 | 3 | 5 | 10,926 | |
0.61 | Single-Family Home | $625,000 | 04/09/26 | 6 | 6 | 4,142 | |
0.37 | Single-Family Home | $3,700,000 | 01/27/26 | 5 | 5 | 3,962 | |
0.19 | Single-Family Home | $4,400,000 | 04/16/26 | 4 | 2.5 | 3,300 | |
0.11 | Single-Family Home | $2,600,000 | 09/19/25 | 4 | 3 | 1,570 | |
0.32 | Single-Family Home | $4,475,000 | 04/10/26 | 4 | 3.5 | 3,666 |
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 |
|---|---|---|---|---|---|---|
0.02 | $19,662,400 | 3 | 3 | 1,806 | Off Market | |
0.05 | $7,450,000 | 7 | 8 | 4,565 | For Sale | |
0.12 | $30,930,300 | 6 | 7.5 | 7,178 | Off Market | |
0.08 | $6,307,200 | 5 | 6.5 | 4,649 | Off Market | |
0.09 | $5,579,600 | 6 | 6 | 4,393 | Off Market | |
0.11 | $3,252,200 | 4 | 3 | 1,570 | Off Market | |
0.14 | $4,692,500 | 5 | 6.5 | 3,650 | Off Market | |
0.14 | $3,405,400 | 4 | 3.5 | 2,430 | Off Market | |
0.13 | $2,800,000 | 3 | 2 | 1,403 | Recently Sold | |
0.16 | $237,000,000 | 5 | 8 | 11,528 | For Sale | |
0.17 | $4,959,000 | 5 | 4.5 | 4,021 | Off Market | |
0.15 | $3,168,900 | 4 | 3 | 1,754 | Off Market |
Local Information
-- mins to
Home Highlights
Property Type
Single-Family Home
Year Built
2024
Lot Size
0.52 acres
Living Area
8,039 sqft
Price/Sqft
$3,971
About this House
Best Lot in Key Biscayne. 4BR/4BATH. 4,236 SQFT. Lost size is 22,688 SQFT. Waterfront/beachfront single family home. Ideal for renovation or new construction. Project and architectural plans available to start new construction.
400 Harbor Dr, Key Biscayne, FL 33149 is a 5 bedroom, 5 bathroom, 8,039 sqft single-family home built in 2024. It last sold for $500,100 on Jun 28, 2018. It is currently off market. The Trulia Estimate is $31,923,600, with a rent estimate of $69,503/month.
Home Details for 400 Harbor Dr
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Levels, Entrance, & Accessibility Stories: 2 |
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Exterior Home Features Roof: OtherExterior: StuccoPatio |
Pool Pool |
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Year Built Year Built: 2024Year Updated: 1969 |
Property Type / Style Property Type: Single Family Home |
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Units in Building: 1 |
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Lot Area: 0.52 acres |
Price and Tax history
| Date | Event | Price |
|---|---|---|
Apr 27, 2021 Source: N/A | ListingRemoved | |
Feb 24, 2021 Source: N/A | Listed For Sale | $17,000,000 |
Jun 28, 2018 Source: N/A | Sold | $500,100 |
Apr 15, 2002 Source: N/A | Sold | $3,550,000 |
| Year | Property tax | Tax assessment |
|---|---|---|
| 2025 | $343,865 | $22,079,508 |
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 400 Harbor Dr
- What is 400 Harbor Dr estimated to be worth?Trulia's estimated value for 400 Harbor Dr in Key Biscayne, FL is $31,923,600.
- What is the price history for 400 Harbor Dr?400 Harbor Dr in Key Biscayne, FL last sold for $500,100 in June 2018.
- 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 400 Harbor Dr have a pool?Yes, 400 Harbor Dr in Key Biscayne, FL has a pool.
- How big is the lot at 400 Harbor Dr?The lot at 400 Harbor Dr in Key Biscayne, FL is about 0.52 acres (22,688 sq ft).