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© 2026 DockOnly™. All rights reserved.

DockOnly™ and Dock Score™ are trademarks of Blue Mar Real Estate Group Inc.

Blue Mar Real Estate Group

Blue Mar Real Estate Group Inc.

Licensed Florida Real Estate Broker

DBPR License CQ1018554

Listing data provided by Miami Realtors MLS via Bridge Data Output. Information deemed reliable but not guaranteed. Dock Score™ is a DockOnly.com rating and is not provided by or affiliated with the MLS or listing broker. NOAA chart data is public domain and for reference only — not for navigation. Full MLS Compliance

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+20

121 Knollwood Drive

Key Biscayne, FL, 33149

Active

$13,250,000

121 Knollwood Drive

Key Biscayne, FL, 33149

Active

$13,250,000

5

Bedrooms

5

Bathrooms

4,924 sqft

Living Area

1972

Year Built

Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$2,650,000 down

%
Principal & Interest$68,751/mo
Property Tax (est. ~1.2%, varies by county)$13,250/mo
Home Insurance (est.)$250/mo
Total Monthly Payment$82,251
Loan Amount: $10,600,000Rate: 6.75%
Get Pre-Qualified

Estimated payments only. Actual rates and terms may vary.

Comparable Sales

$13,250,000Tour the dockSchedule a Showing
Navigation note: Navigation routes show the shortest mapped path to open water. A vessel taller than the binding bridge clearance may still reach open water via a longer alternate route that we don't currently map — verify navigability with a local captain or surveyor before relying on it.

13,947

Lot Size (sqft)

155

Days on Market

Dock Score™

DockOnly
97
Excellent

What shaped this score

✓Ocean Access
✓Dock with boat lift
✓No fixed bridges
✓Fits boats up to ~65ft (est.)

DockOnly.com rating — not provided by the MLS or listing broker.

Dock & Water AccessMLS

Ocean AccessCanal FrontNo Fixed Bridges

AI Aerial Imagery Detection

Dock DetectedBoat Lift DetectedSeawall DetectedDeep Water Indicators~55-75 ft dock

Detected by AI from open-source aerial mapping imagery and may not reflect current conditions. This information was not provided by the MLS or listing broker. Always verify dock infrastructure with the listing agent.

Canal GeometryDockOnly

Canal Width

County parcel data
103ft at dock

Range 103–129 ft over the next 200 ft of canal

dock103 ft103.2111122

Width sampled every 10 ft from dock · perpendicular measurement

Will it turn around?

Up to 31 ft

Easy
handling

31–42 ft

Fits
with care

42–48 ft

Tight
(back-in)

Boats over 48 ft can't turn around here — back in/out only. Clear channel ≈ 63 ft once boats are docked both sides (FL rules cap each side ~20 ft). Wide-beam yachts need the upper end of each range.

Navigation RouteDockOnly

Data sources: SFWMD AHED waterway polygons · FHWA National Bridge Inventory 2024 · Not provided by the MLS or listing broker.

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.

Schedule a Showing

See the property and tour the dock. A licensed waterfront specialist will arrange your private showing.

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Location

Key Biscayne, FL, 33149

No price history available for this property.

Listing courtesy of One Sotheby's International Realty

Last updated: 6/23/2026

© 2026 Miami Association of REALTORS®, Inc. All rights reserved. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of the Miami Association of REALTORS®. Information is deemed reliable but not guaranteed. All properties are subject to prior sale, change, or withdrawal.

IDX information is provided exclusively for consumers' personal, non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Dock Score™

DockOnly
97
Excellent

What shaped this score

✓Ocean Access
✓Dock with boat lift
✓No fixed bridges
✓Fits boats up to ~65ft (est.)

DockOnly.com rating — not provided by the MLS or listing broker.

FEMA Flood Zone AE
BFE: 9ft

Special Flood Hazard Area

View FEMA Flood Map →
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Nearby Schools

Assigned Public Schools

E

Key Biscayne K-8 Center

Grades PK-8 · Key Biscayne

M

Ponce de Leon MS

Grades 6-8 · Coral Gables

H

Coral Gables Senior High

Grades 9-12 · Coral Gables

Nearby Private Schools

St Agnes Academy1.0 mi
St Christophers - By-The-Sea Montessori School1.0 mi

School data from Miami-Dade County Open Data Hub. Verify attendance zones with the school district.