new-construction-homes in Key Biscayne
4 listings in Key Biscayne
There are 4 new construction homes for sale in Key Biscayne, Florida right now, priced from $6.9M to $8.5M. The median list price is $7,745,000. That puts this segment 211% above the overall Key Biscayne median of $2,490,000 across 151 active listings.
These homes average 3,138 square feet of living area on lots averaging 0.18 acres. Average pricing runs $2,461 per square foot. The median year built is 2026. 100% of them include a private pool.
This segment averages 145 days on market, 30 days longer than the Key Biscayne average of 115. The median closed-sale price in Key Biscayne is $1,527,500. Deals close at 94.5% of list price. The absorption rate is 12.7%.
The largest concentration is in Tropical Isle Homes Sub, with 2 available listings. The rest is spread across 1 other communities.
New construction here includes both builder inventory and recently completed resales. Delivery timelines, design-center allowances and CDD fees vary by community — those three items usually move the real cost more than the base price does.
María Delgado works the South Florida market daily and can send you the full list with photos, association documents and recent comparables — in English or Spanish.
Market overview
Total active
4
Avg price
$7,722,500.00
Median price
$7,745,000.00
Price range
$6,900,000.00 – $8,500,000.00
Avg $/sqft
$2,460.96
Luxury (1M+)
4
Market Pulse
Based on 86 closed sales in Key Biscayne · last 12 months
💰
Median Sold Price
$1,527,500
from closed sales
📅
Avg. Days on Market
100 days
from list to contract
📊
Absorption Rate
12.7%
of inventory sold per month
🎯
Sale-to-List Ratio
94.5%
of asking price
Source: Spark MLS · Updated every 6h
4 listings in Key Biscayne
$7,490,000
571 Glenridge Road, Key Biscayne, FL 33149 · Key Biscayne · FL 33149
5 bd · 7 ba · 3,768 sqft
$8,000,000
544 Warren Lane, Key Biscayne, FL 33149 · Key Biscayne · FL 33149
6 bd · 6 ba · 1,044 sqft