PK-8 Grades
- Elementary
- Middle
Key Biscayne K-8 Center ↗
Attendance zone Elementary
Distance 0.2 mi
Reading the listing
ACTIVE
BISCAYNE KEY ESTATES · · MLS A12010108
690 Warren Ln
Asking price$5,378,000
LIVE · MLS · AS OF NOV 1, 2026
- Bedrooms
- 4
- Bathrooms · 3 full · 1 half
- 4
- Living area
- 3,549 SF
- Price per SF $1,515/SF
- Lot · 0.18 AC
- 8,010 SF
- Year built
- 2000
Listed by One Sotheby's International Realty · MLS@onesothebysrealty.com
Description
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.
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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 information
The propertyAs the MLS records it
- Property type
- Single Family Residence
- Year built
- 2000
- Lot size
- 8,010 SF · 0.18 AC
- Garage spaces
- 2
Size and layout
- Living area
- 3,549 SF
- Bedrooms
- 4
- Bathrooms
- 3 full · 1 half
Home and lot
- Subdivision
- BISCAYNE KEY ESTATES
- Waterfront
Payment calculator
Estimated monthly payment
$30,983 per month
30-year fixed, 7.24% interest
- Principal and interest
- $29,321
- Property taxes
- $1,663
The calculator opens on the national average rate for a 30-year fixed-rate loan: 7.24% for the week of October 29, 2026. Source: Freddie Mac, Primary Mortgage Market Survey ↗
For illustration only: an estimate, not a loan offer or a quote. The tax is the last annual bill the MLS records for this property; in Florida a property is reassessed when it is sold, so a buyer's tax will differ. Insurance is not estimated: it is included only when you enter your own quote. The rate is a national weekly average, not the rate a lender will offer you: change it to the one you are quoted.
REQUEST A TOUR
See 690 Warren Ln in person.
Showings of 690 Warren Ln, Key Biscayne, FL 33149 are by appointment. Send the request here, call or write on WhatsApp: Julian Acosta, real estate advisor with Compass, answers within one business day to confirm a day and a time.
How to request a showing
Send the request
Use the form on this page, call +1 (786) 473-2565 or write on WhatsApp.
Say when
Name the days and the times that suit you. A second option helps.
Julian confirms
He answers within one business day and confirms the day and the time with you.
The listing and who shows it
- Address
- 690 Warren Ln, Key Biscayne, FL 33149
- MLS number
- A12010108
- Listed by
- One Sotheby's International Realty
- Showings
- Julian Acosta, real estate advisor with Compass
- Reach him
- +1 (786) 473-2565 · WhatsApp ↗ · Text message · E-mail
No lists, no obligation.
Recent market sales nearby
◆ SOURCE · MLS CLOSED SALES · THE LAST TWELVE MONTHS- This home
- Closed sales, by number
Key Biscayne market snapshot
Single-family homes in Key Biscayne, $2,000,000 and up · Closed sales of the last twelve monthsAs of NOV 1, 2026
- Closed sales
- 41
- Since NOV 1, 2025
- Median sale price
- $4,700,000
- Half closed for more, half for less
- Median price per SF
- $1,499
- Of the sales that state a living area
The market's sales, not sales by Julian Acosta
| Year | Median price per SF | Closed sales |
|---|---|---|
| 2020 | $803 | 54 |
| 2021 | $964 | 109 |
| 2022 | $1,220 | 60 |
| 2023 | $1,249 | 30 |
| 2024 | $1,321 |
Schools
Zoned public schools · Miami-Dade County Public Schools
6-8 Grades
- Middle
Ponce de Leon Middle ↗
Attendance zone Middle
Distance 6.7 mi
9-12 Grades
- Senior high
Coral Gables Senior High ↗
Attendance zone Senior high
Distance 6.6 mi
Elementary · PK–5Middle · 6–8Senior high · 9–12 Color marks the grades a school serves, never a rating.
◆ SOURCE · MIAMI-DADE COUNTY GIS · ATTENDANCE BOUNDARIES EDITED SEP 21, 2026
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ABOUT THIS LISTING
Where this listing's information comes from.
◆ MIAMI REALTORS® · SOUTHEAST FLORIDA MLS◆ UPDATED NOV 1, 2026◆ MLS A12010108
The information on this page is supplied by the Southeast Florida Multiple Listing Service of the MIAMI Association of REALTORS®. It is deemed reliable but is not guaranteed accurate by the MLS, and it may have changed since the date above. It is provided for your personal, non-commercial use and may not be used for any purpose other than to identify properties you may be interested in purchasing. This listing is held by One Sotheby's International Realty. Julian Acosta is a real estate advisor with Compass.
Compass Coral Gables · 1515 Sunset Dr, Suite 40, Coral Gables, FL 33143 · julian.acosta@compass.com · +1 (786) 473-2565
A listing shown here may be held by a brokerage other than Compass. To report an error in this listing's information, write to julian.acosta@compass.com.
