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ActiveFor sale

121 Knollwood Drive, Key Biscayne FL 33149, Key Biscayne

$13,250,000

Key Biscayne, FL, 33149

121 Knollwood Drive, Key Biscayne FL 33149 — photo 1
121 Knollwood Drive, Key Biscayne FL 33149 — photo 2121 Knollwood Drive, Key Biscayne FL 33149 — photo 3121 Knollwood Drive, Key Biscayne FL 33149 — photo 4121 Knollwood Drive, Key Biscayne FL 33149 — photo 5121 Knollwood Drive, Key Biscayne FL 33149 — photo 6121 Knollwood Drive, Key Biscayne FL 33149 — photo 7121 Knollwood Drive, Key Biscayne FL 33149 — photo 8121 Knollwood Drive, Key Biscayne FL 33149 — photo 9121 Knollwood Drive, Key Biscayne FL 33149 — photo 10121 Knollwood Drive, Key Biscayne FL 33149 — photo 11121 Knollwood Drive, Key Biscayne FL 33149 — photo 12

Property details

Bedrooms
5
Bathrooms
5
Living area
4,924 sqft
Year built
1972
Type
Single Family Residence
Days on market
155
MLS #
A11936017

Listing courtesy of One Sotheby's International Realty · 305-365-2811. Listing agent: Brigitte Nachtigall. MLS data last updated 2026-03-17.

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.

121 Knollwood Drive, Key Biscayne FL 33149, Key Biscaynefor sale, listed for $13,250,000 (5 bed, 5 bath, 4,924 sqft).

$2,691/sqft · 80% percentile · based on 33 5+ bed listings for sale in key biscayne (median $1,992/sqft).

Observed price & status history

Asking price reduced from $13,850,000 to $13,250,000.

Price per square foot

This listing is priced at $2,691 per square foot, which is the 80% percentile among 33 active 5+ bed listings for sale in key biscayne (median $1,992/sqft).

n=33 · 2026-07-28 · Methodology

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n=45 · 2026-07-28 · Methodology

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Local market report

Current market segment

Right now: 33 active 5+ bed listings for sale in key biscayne, median asking price $8,300,000, median $1,992/sqft.

n=33 · 2026-07-28 · Methodology

Asking price vs segment median

$13,250,000 asks 59.6% above the $8,300,000 median across 33 5+ bed listings for sale in Key Biscayne.

n=33 · 2026-07-28 · Methodology

Market intelligence recomputed weekly from the full live MLS feed · 2026-07-28 · Methodology

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