690 Warren Ln, Key Biscayne, FL 33149 — MLS photo

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690 Warren Ln, Key Biscayne, FL 33149

Active · SingleFamilyResidence

$5,378,000

690 Warren Ln, Key Biscayne, FL 33149

Beds
4
Baths
4
Living area
3,549 sq ft
$ / sq ft
$1,515/sq ft
Year built
2000
Lot size
8,010 sq ft
HOA fee
—
Annual tax
—

About this property

A truly exceptional Miami Modern Tropical residence set on a prime 8,010 SF corner lot, offering 3,549 SF of beautifully curated living space with 4 bedrooms and 3.5 bathrooms. Designed by architect Hervin Romney, a founding member of Arquitectonica, the home reflects a distinctive architectural vision inspired by the organic principles of Frank Lloyd Wright and the expressive forms of Antoni Gaudí, where art, design, and nature seamlessly converge. This residence captivates with its abundance of natural light, soaring high ceilings, fluid open spaces, and harmonious lines that create a sense of warmth, sophistication, and effortless flow throughout the main living areas. The beautifully remodeled kitchen and bar are a true centerpiece, featuring high-end appliances, premium finishes, refined craftsmanship, and a design that balances functionality with striking aesthetics. Step outside into your own private tropical retreat, where lush landscaping, graceful curved terraces, and a stunning swimming pool create an atmosphere of tranquility and escape. This outdoor sanctuary is perfect for both relaxation and entertaining. As an added privilege, the property includes membership to the Key Biscayne Beach Club, offering exclusive access to one of Miami’s most coveted coastal lifestyles. Key Biscayne is renowned for its pristine beaches, charming restaurants, and vibrant yet relaxed atmosphere—delivering a true island lifestyle just minutes from the city.

Property location

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690 Warren Ln, Key Biscayne, FL 33149

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Facts & features

Interior

Bedrooms
4
Bathrooms
4
Living area
3,549 sq ft

Exterior & Structure

Property type
SingleFamilyResidence
Year built
2000
Lot size
8,010 sq ft

Parking

Not provided in the MLS listing.

HOA, Community & Financials

County
Miami-Dade
MLS listing ID
A12010108
Listing status
Active

Investment intelligence

Yield & ROI calculator

Pre-filled from this listing's price, HOA and tax record. Adjust anything to see returns update instantly.

Estimated monthly cash flow

-$18,087

Cap rate
1.7%
Net yield
1.7%
Cash-on-cash return
-14.4%
Gross yield
4.7%
Mortgage payment
$25,494/mo
Down payment
$1,344,500
Loan amount
$4,033,500
Annual NOI
$88,894

Estimates only — includes 5% maintenance reserve and ~3% closing costs in cash invested. Verify taxes, HOA and insurance before making an offer.