Single Family Residence
690 Warren Ln
690 Warren Ln, Key Biscayne FL 33149
$5,478,000
4 Beds · 3 Baths · 3,549 SqFt
See estimated monthly costThis listing is courtesy of One Sotheby's International Realty. Brigitte Nachtigall MLS@onesothebysrealty.com
Overview
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.
Facts & features
Interior
- Living area (sq ft)
- 3,549
- Full bathrooms
- 3
- Half bathrooms
- 1
- Built-in Features
- Closet Cabinetry
- Cooking Island
- Fire Sprinklers
- Volume Ceilings
- Walk-In Closet(s)
- Den/Library/Office
- Utility Room/Laundry
Building & exterior
- Year built
- 2000
- Lot size (sq ft)
- 8,010
- Garage spaces
- 2
- Covered spaces
- 2
- Other
- Open Balcony
- Driveway
HOA (homeowners association)
- Other Restrictions
Taxes
- Annual tax
- $19,950
- Tax year
- 2025
- Parcel number
- 24-52-05-001-0790
Assigned schools
- Elementary
- Keybiscayne
- Middle
- Ponce De Leon
- High
- Coral Gables
Listing
- MLS number
- A12010108
- Property type
- Single Family Residence
- Price per SqFt
- $1,544
- Subdivision
- BISCAYNE KEY ESTATES
- On market since
- Apr 30, 2026
- Days on market
- 137
Estimated monthly cost
$33,471 per month
- Principal & interest (30 yr)
- $27,700
- Property tax
- $1,663
- Insurance (estimated)
- $4,109
An estimate for comparison only — not a loan offer, a quote, or a commitment to lend. Actual taxes, insurance and financing terms will differ.
Location
Nearby schools
- Key Biscayne K-8 Center
- Key Biscayne Presbyterian School
- St Christophers - By-The-Sea Montessori School
- St Agnes Academy
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