CAPE FLA SUB SEC 2
121 Knollwood Drive, Key Biscayne FL 33149
5 beds · 4.5 baths · 4,924 ft²
5
Bedrooms
4.5
Bathrooms
4,924
Sq. Ft.
1972
Year Built
2
Garage
74
Days on Market
Description
Designed for those who value privacy, space, and a true connection to the water, this exceptional waterfront residence offers a rare boater’s retreat and a warm, inviting setting for family living. Tucked away on a quiet street and set on an expansive nearly 14,000-square-foot lot, the home impresses from the moment you arrive with its generous front yard and gated entry, offering both presence and privacy. Inside, a bright two-story layout unfolds with an open, airy feel, thoughtfully designed for both everyday comfort entertaining. The residence features five bedrooms, four full bathrooms, plus a cabana bath, all flowing seamlessly enhanced by abundant natural light and tranquil water views. Renovated in 2019, the home includes impact windows and doors, a beautifully updated kitchen and appliances, lighting throughout, gas generator, and a pool heater and chiller for year-round enjoyment. The outdoor living experience is truly exceptional…enjoy direct water access with a private dock, boat lift, and two dry jet-ski docks, allowing you to step straight from your backyard to open water and fully embrace the waterfront lifestyle. A detached, enclosed two-car garage adds versatility, while the gated property offers abundant parking for up to six vehicles, a rare and valuable amenity in Key Biscayne. Homes of this caliber which offer privacy, boating infrastructure, generous land, and modern upgrades are increasingly rare and best appreciated in person.
Facts
- MLS#
- A11936017
- Subdivision
- CAPE FLA SUB SEC 2
- Property Type
- Residential
- Property Sub Type
- Single Family Residence
- Year Built
- 1972
- Lot Size
- 13,947 ft²
- Sq. Ft.
- 4,924 ft²
- Sq. Mt.
- 457 m²
- Price per sq. ft.
- $2,691/ft²
- Price per sq. mt.
- $28,993/m²
- Stories
- —
- Garage
- 2 spaces
- Pool
- —
- Days on Market
- 74 days
- Listed
- Jan 2, 2026
- Last Updated
- Mar 17, 2026
- Price/Lot Sq.Ft.
- $950/ft²
Comparable homes
Same ZIP, similar price + bedrooms.
SOLD$13,250,000
5 bd · 5 ba · 3,620 sqft
640 S Mashta Dr, Key Biscayne FL 33149
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890 HARBOR DRIVE, Key Biscayne FL 33149

$11,600,000
5 bd · 5 ba · 3,509 sqft
221 Knollwood Dr, Key Biscayne FL 33149
SOLD$14,900,000
5 bd · 6 ba · 7,004 sqft
260 Harbor Dr, Key Biscayne FL 33149

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Market insights for Key Biscayne
Live MLS-derived activity. Forecast is a conservative rule-of-thumb estimate — not a guarantee.
Sellers market
May 2026
77
Median days to sold
+4.5%
1-year price forecast (est.)
Price & tax history
From the live MIAMI MLS feed. Older history requires the ListingHistory resource (not yet enabled).
| 2/26/2026 | Price change | $13,250,000-4.3% |
| 1/2/2026 | Listed for sale | $13,850,000 |
History reflects fields present on the live MLS record. Full multi-year history requires the MIAMI ListingHistory resource (not yet enabled).
Location
GreatSchools Summary Ratings
Public + private K-12 schools within 5 miles of this listing.
Holy Cross Lutheran SchoolPK,KG,1,2,3,4,5,6,7,8 · private · 0.1 mi
North Miami Senior High School9,10,11,12 · public · 0.2 mi
North Miami Middle School6,7,8 · public · 0.2 mi
North Miami Senior Adult EducationUG · public · 0.2 mi
Small Talk Academy Pre-SchoolPK,KG · private · 0.3 mi
Archcreek Elementary SchoolPK,KG,1,2,3,4,5 · public · 0.3 mi
North Miami Baptist AcademyPK,KG · private · 0.4 mi
Small World Montessori Method School IiPK,TK,KG · private · 0.5 mi
Advance Christian AcademyPK,TK,KG,1,2,3,4,5,6,7,8,9,10,11,12 · private · 0.5 mi
Amazing Learning AcademyPK,KG · private · 0.6 mi
Estimated Monthly Payment
$81,714/mo
Principal & Interest
$70,522
Property Tax
$11,042
Insurance
$150
HOA
$0
Estimates only. Actual payment depends on credit, lender, insurance carrier, and FL/Miami-Dade specifics. Contact Rangely for a precise quote.
The data relating to real estate for sale on this website comes in part from the Southeast Florida Multiple Listing Service. MLS Data is deemed reliable, but is not guaranteed accurate by MIAMI REALTORS®.
Accuracy of listing information is not guaranteed. Listing information is provided for personal consumer, non-commercial use, solely to identify potential properties for potential purchase. All other use is strictly prohibited and may be a violation of federal and state law.
Copyright Southeast Florida MLS a/k/a SEFMLS © 2026.
Updated within 24 hours
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