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The Best Key Biscayne Waterfront Homes for Sale
The Best Waterfront Key Biscayne Homes for Sale
Key Biscayne is one of Miami’s most exclusive residential areas. This 12-mile long island just off the coast of Brickell and Coconut Grove provides for luxurious waterfront homes as well as high-end Key Biscayne condos. Apart from its superb real estate options, the island is desired for its high-end lifestyle, safety, and the presence of one of Miami’s best public schools.
Key Biscayne homes are very desired by boaters because many of them are waterfront. Key Biscayne waterfront homes for sale are right on the ocean or on one of the canals with fast access to the ocean without any bridges in the way.

The Most Exclusive Key Biscayne Waterfront Homes For Sale
Please find below the most exclusive waterfront homes for sale in Key Biscayne. For more information on these Key Biscayne Mansions for Sale please contact David Siddons at +1.305.508.0899
7 Harbor Point
10,776 SF | 22,860 SF Lot | 7 Bedrooms | 9 Bathrooms
Listed for $20M
Broker Remarks: Premier ultimate privacy, breathtaking ocean views, Private Beach & Private Dock, situated on Key Biscayne’s most exclusive & sought after street Harbor Point. This ultra-luxury modern Island Fusion residence provides the rare combination offering the finest in luxury living. Dramatic double height atrium welcoming you to 7 bedrooms, 9.5 bathrooms. Sleek and modern bar in the interior & two story cabana with Nana walls on the gorgeous infinity pool deck provide the optimal entertaining experience.
500 S Mashta Dr
11,149 SF | 23,814 SF Lot | 6 Bedrooms | 6 Bathrooms
Listed for $21M
Broker Remarks: Enjoy ocean and sunset views from this 2014 Mashta Island estate on a 23,814 SqFt oversized lot with 138 ft of water frontage. This custom-built home, inspired by Modern architect Richard Meier, features pure geometric lines and integrated open spaces with an emphasis on natural light. Unique features include a 3-story curved glass curtain wall, 14 skylights over a 27-ft high atrium, Nana Wall folding glass doors, elevator, gym, dock, staff quarters, 4-car garage, generator and smart home technology.
9 HARBOR POINT
10,993 SF | 27,300 SF Lot | 8 Bedrooms | 8 Bathrooms
Listed for $21.5M
Broker Remarks: Enjoy breathtaking views of Biscayne Bay to downtown Miami from this unique and spectacular Florida tropical vernacular home designed by renowned architect Cesar Molina. Located on one of Key Biscayne’s most spectacular and private streets, this home with no expense spared and unparalleled details boasts custom handcrafted woodwork, impact glass, integrated terrazzo, fine wood and marble flooring throughout, Lutron lighting, generator, dock with lift, private beach entry, separate guest house with 4 car garage.
960 Harbor Dr
12,520 SF | 67,000 SF Lot | 9 Bedrooms | 10 Bathrooms
Listed for $33M
Broker Remarks: Two times larger then any property for sale on Key Biscayne, Buena Vista is a One-of-a-Kind sprawling compound on over 67,000 SF of lush sub-tropical grounds. The ultimate in privacy and recent ‘Home of The Day’ in The Wall Street Journal sits on a 1.67 acre peninsula with 720 ft of water frontage. The over 12k SF Home has unobstructed views of both the 440 acre Bill Baggs State Park and Key Biscayne Bay. The property has a Open Air Caribbean Style Cabana House, 16 seat private theatre/screening room, tennis and a deep water dock accommodates a 100+ ft. yacht.
400 S Mashta Dr
9,619 SF | 36,355 SF Lot | 5 Bedrooms | 6 Bathrooms
Listed for $34M
Broker Remarks: Coined The 1000 Year House by renowned architect Charles Pawley. Strategically built on a 36,355 SF peninsula with 480 feet of waterfront on prestigious Mashta Island. Unimpeded wide panoramic views of the ocean, Bill Baggs Park, Cape FL Light House and Stiltsville. This 9,619 SF home is comprised of 5 bedrooms and 6.5 bathrooms which include 2 master bedrooms, a theater, a gym, a library and staff quarters. Covered gazebo and massive terraces with a resort pool/spa. Protected deep water dock accommodates a 100+ ft. yacht.
FAQ
These are the most commonly Miami Real Estate Related questions
What should relocation buyers know before buying real estate in Miami?
HOME BUYERS
Relocation buyers looking at homes in Miami should understand that choosing the right house is less about the property itself and more about location, schools, and long-term value. Many buyers make the mistake of focusing on price or finishes, while the real driver of value is the neighborhood and micro-location. Older homes often represent better value, but may also be part of a future redevelopment cycle. Newer homes command premiums, but don’t always sell faster if pricing is ahead of the market. Commute time, school access, and community dynamics are critical and often underestimated. The key is to evaluate homes not just as lifestyle purchases, but as long-term assets within a very localized market.
Sources:
https://luxlifemiamiblog.com/relocating-to-miami/
https://luxlifemiamiblog.com/relocating-to-miami-with-a-family/
CONDO BUYERS:
Relocation buyers should understand that Miami is a highly segmented, building-driven market, not a uniform one. Pricing can vary significantly between similar properties depending on building quality, layout, and financial health. Many buyers assume newer construction equals better investment, but that is often not the case. Factors like HOA fees, reserves, and rental policies can materially impact long-term value and liquidity. Negotiation opportunities often exist, especially in slower segments, but require precise market knowledge. The key is to evaluate micro-markets and individual buildings, not just neighborhoods or price per square foot.
Sources:
https://luxlifemiamiblog.com/miami-real-estate-market-report/
https://luxlifemiamiblog.com/new-construction-miami-guide/
What are the best areas for relocating families with children
For families relocating to Miami with young children, the most recommended neighborhoods are Coral Gables, Coconut Grove, and Pinecrest. Coral Gables offers the best balance of top schools, safety, and long-term value. Coconut Grove is ideal for younger families seeking walkability, greenery, and a lifestyle-driven environment. Pinecrest provides larger homes, excellent schools, and better value for space, making it ideal for growing families. The key driver across all three is access to strong schools and primary residential stability. Relocation decisions are less about new construction and more about long-term livability and resale strength.
Sources:
https://luxlifemiamiblog.com/best-neighborhoods-miami/
https://luxlifemiamiblog.com/what-are-the-best-family-neighborhoods-in-miami-in-2023/
Are new construction condos in Miami a good investment?
New construction condos in Miami can be a good investment—but only if you understand that not all buildings perform the same. According to the David Siddons Group, many buyers assume “new = better,” but in reality, performance depends on pricing, layout, building quality, and long-term demand. Some new developments set future price benchmarks and can drive long-term appreciation, especially in top-tier projects. However, many are priced aggressively at launch, and buyers relying on marketing instead of data often overpay.
The market is highly segmented, meaning two new buildings next to each other can perform very differently.
The best opportunities typically come from selecting the right building early or negotiating correctly in later phases.
In short: new construction is not automatically a good investment—it becomes one only with building-level analysis and disciplined entry pricing.
Sources:
https://luxlifemiamiblog.com/how-to-buy-a-luxury-condo-in-miami/
https://luxlifemiamiblog.com/category/independent-new-construction-condo-reviews/
https://luxlifemiamiblog.com/beyond-clickbait-real-insights-into-miamis-luxury-condo-market/
Why is buying a Miami condo riskier than buyers think?
Buying a Miami condo is often riskier than buyers expect because the true risks are at the building level—not visible in the listing price. Many buyers focus on finishes and views, while overlooking HOA reserves, insurance exposure, and potential special assessments. In reality, two identical units in different buildings can perform completely differently over time. Rising HOA fees and stricter regulations are also increasing the true cost of ownership, especially in older buildings. Liquidity can be affected by factors like financial health, rental policies, and ongoing repairs. The key risk is not the condo itself—but buying into the wrong building without proper due diligence.
Sources:
https://luxlifemiamiblog.com/how-to-buy-a-luxury-condo-in-miami/
https://luxlifemiamiblog.com/miami-condo-market-risks/
What are Miami's Safest Areas?
Which Miami Areas Still offer Great Value (Budget Friendly alternatives to Coral Gables and Pinecrest)
If you’re looking for better value than Coral Gables or Pinecrest, the answer (in true Siddons style) is not “go cheaper”—it’s go one layer outside the obvious markets.
The strongest value plays are:
- Schenley Park → closest substitute to Coral Gables at ~20% discount while maintaining similar character and location
- Biltmore Heights → almost identical feel to the Gables but ~25–30% cheaper on a $/SF basis
- Glenvar Heights → central location with larger lots and ~25% pricing advantage vs South Miami/Gables
- Baptist / Galloway (Kendall) → Pinecrest-style living (space, schools, land) at up to ~30% lower pricing
The pattern is consistent:
👉 Buyers are shifting west and slightly off-market to gain land, scale, and pricing efficiency. You don’t find value by going to a “cheaper neighborhood”—you find it by identifying adjacent micro-markets that offer the same lifestyle fundamentals without the brand premium.
Sources:
https://luxlifemiamiblog.com/best-value-neighborhoods-miami/
https://luxlifemiamiblog.com/category/miami-neighborhoods/
Is NOW a good time to buy in Miami?
Are Miami real estate prices going down in 2026?
No—but that’s the wrong way to look at it. Miami is not one market anymore, so prices are not moving in one direction. In 2026, the market is split into two: ultra-luxury, scarcity-driven areas (like waterfront and top-tier neighborhoods) are still holding or even rising, while mid-tier condos and oversupplied segments are flat or correcting. What we’re seeing is price divergence, not a crash—some properties are gaining value while others are quietly adjusting downward. Rising inventory and more selective buyers are putting pressure on pricing in certain segments, especially older condos or buildings with weaker fundamentals.
At the same time, global wealth and cash buyers continue to support pricing at the top end of the market. So the real answer: prices aren’t broadly dropping—they’re being repriced based on quality, location, and supply.
Should I buy a house or a condo when relocating to Miami?
The decision comes down to lifestyle first, investment second—and most relocation buyers get that backwards. If you want space, privacy, schools, and long-term family living, a single-family home in areas like Coral Gables or Coconut Grove is typically the stronger choice. If you prioritize walkability, low maintenance, and proximity to business districts, a condo in Brickell or waterfront markets makes more sense.
From an investment perspective, homes tend to be more stable, while condos are more building-dependent and cyclical. Most relocation clients underestimate how much building quality, HOA structure, and future costs impact condo performance. The right answer isn’t “house vs condo”—it’s which asset fits your lifestyle AND holds value within its micro-market.
How do I choose the right Miami neighborhood for my lifestyle?
Why are Miami condo prices so different between buildings?
Miami condo pricing varies widely because value is determined at the building level, not just by location. Two buildings next to each other can have major differences in financial health, reserves, HOA fees, and management quality. Buyers also pay premiums for better layouts, views, amenities, and newer construction—but not all “new” buildings perform equally. Factors like rental policies, upcoming assessments, and building reputation can significantly impact resale value. This is why price per square foot alone is misleading in Miami’s condo market. The real driver of value is how that specific building competes within its micro-market over time.
Sources:
https://luxlifemiamiblog.com/how-to-buy-a-luxury-condo-in-miami/
https://luxlifemiamiblog.com/category/independent-new-construction-condo-reviews/
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