430 Grand Bay Dr, Key Biscayne FL 33149 | Miami-Dade County | A11915787
- $26,000,000
- $26,000,000
Description
Dominating the Key Biscayne skyline, this Geoffrey Bradfield–designed penthouse is a rare display of power, prestige, and absolute luxury. Encompassing 13,630 sq. ft. with 10,421 sq. ft. under air and 3,000+ sq. ft. of oceanfront terraces, it commands 100 feet of unobstructed beachfront with sweeping sunrise and sunset views. Directly adjacent, the $100M+ newly reimagined Ritz-Carlton and its brand-new Beach Club sit at your footsteps, elevating exclusivity to a world-class level. Inside, soaring ceilings showcase a showpiece chef’s kitchen, grand dining, four-private en-suites, a refined executive office, staff quarters, and couture-caliber closets. Includes five premium parking spaces and five oversized private storage cages. A true trophy residence at the apex of coastal luxury.
Property Overview
This is a 4-bedroom, 5-bath condominium of about 9600 square feet at 430 Grand Bay Dr, Key Biscayne FL 33149 (Key Biscayne 33149), listed at $26,000,000.
Monthly Costs, Stated Plainly
The exact monthly HOA is not stated on this listing, but across 3 units in this building it has ranged $3,118-$4,398 (median ~$3,200). Treat that as guidance and confirm the current assessment for this unit.
The tax of record is $153,827 (2024). As an ESTIMATE ONLY — Florida reassesses at sale — at this price and a Miami-Dade rate near 2.0%: without homestead, about $520,000/yr (≈ $43,333/mo); with the homestead exemption on a primary residence, about $519,000/yr (≈ $43,250/mo). Confirm with the Miami-Dade Property Appraiser and a tax professional — these are estimates, not quotes.
Frequently Asked Questions
What is the list price, and what typically conveys with a home like this?
The list price for 430 Grand Bay Dr, Key Biscayne FL 33149 is $26,000,000. With a home of this nature, fixtures and built-in appliances generally convey with the property. However, it is explicitly stated that the furnished status is not specified on the record, so it should not be assumed that any furnishings will be included in the sale. The community offers various amenities such as Bike Storage, Community Room, Exercise Room, and Pool, but these are shared amenities and not part of the property that conveys with the home.
To verify what is included in the sale and to get a clearer understanding of the property, it is recommended that you reach out to Christopher Lazaro, Key Biscayne Real Estate Professional, to discuss the details of this listing and schedule a viewing of the 4bd/5ba ~9600 sqft property. You can contact Christopher Lazaro to confirm the specifics of the sale and to get guidance on the process of purchasing this home. Alternatively, you may want to start by making a list of questions and concerns to address with Christopher Lazaro, ensuring you have a comprehensive understanding of the property before moving forward.
Where exactly is it, and what should I know about the location?
The property at 430 Grand Bay Dr is located in Key Biscayne, FL 33149, situated along the coastal corridor of Key Biscayne. This area is known for its waterfront properties and proximity to the ocean. The property itself is a significant estate, with 4 bedrooms and 5 bathrooms, spanning approximately 9,600 square feet. Its location at $26,000,000 offers a unique opportunity for a buyer looking for a substantial residence in this desirable area.
To verify the details of this listing and schedule a viewing, contact Christopher Lazaro, Key Biscayne Real Estate Professional, who can provide more information and guide you through the process of purchasing this exceptional property at 430 Grand Bay Dr, Key Biscayne, FL 33149, listed at $26,000,000.
What are the HOA / association fees, and what do they cover?
The monthly HOA fee for this unit at 430 Grand Bay Dr, Key Biscayne, FL 33149, is not explicitly stated in the listing, but similar units in the building have ranged from $3,118 to $4,398, with a median of approximately $3,200. According to the record, the monthly HOA fee covers specific expenses, including Common Area, Manager, Security, Sewer, Trash Removal, and Water. It is essential to confirm the current assessment for this unit, as fees can vary. The community is also subject to city ordinances, which can be found in the municipal code at https://library.municode.com/fl/key_biscayne/codes/code_of_ordinances.
To verify the current HOA fee and assessment for this unit, as well as to discuss the details of the property, including its 4 bedrooms, 5 bathrooms, and approximately 9,600 square feet of living space, listed at $26,000,000, we recommend contacting Christopher Lazaro, Key Biscayne Real Estate Professional, to schedule a consultation and review the most up-to-date information available.
What are the property taxes and homestead implications?
The property taxes for 430 Grand Bay Dr, Key Biscayne FL 33149, listed at $26,000,000, can be estimated in two ways. The tax of record is $153,827 (2024), but as an ESTIMATE ONLY, considering Florida reassesses at sale and a Miami-Dade rate near 2.0%, the annual tax would be about $520,000/yr (approximately $43,333/mo) without homestead, and about $519,000/yr (approximately $43,250/mo) with the homestead exemption, which lowers the taxable value only for a primary residence. These are ESTIMATES, not quotes, and should be confirmed with the Miami-Dade Property Appraiser and a tax professional.
To verify these ESTIMATES and understand how they apply to your situation, it is recommended that you reach out to Christopher Lazaro, Key Biscayne Real Estate Professional, who can provide more detailed information and guidance on the property tax implications for this luxury property, including the potential impact of the homestead exemption on your tax liability, and help you navigate the complexities of the Miami-Dade tax system.
Is the home in a flood zone, and what does that mean?
The property at 430 Grand Bay Dr, Key Biscayne FL 33149, listed at $26,000,000, is located in a flood zone. Flood zones are areas that the Federal Emergency Management Agency (FEMA) has identified as being at risk for flooding, which can be caused by heavy rainfall, storm surges, or other factors. To understand the different types of flood zones, you can visit the FEMA definitions page. For specific information about the flood zone designation for this property, you can View the FEMA flood map for this address.
Lenders often require flood insurance for properties located in high-risk flood zones, which can impact the cost of owning the property. If you are considering purchasing this 4 bedroom, 5 bathroom, ~9600 sqft home, it is essential to verify the flood zone designation and understand any potential implications. To get more information and verify the details, contact Christopher Lazaro, Key Biscayne Real Estate Professional, to discuss your specific situation and determine the best course of action for your purchase.
Are pets allowed?
According to the MLS record for 430 Grand Bay Dr, Key Biscayne FL 33149, the pet policy indicates 'Restrictions Or Possible Restrictions', which means pets are allowed, with restrictions or possible restrictions. To confirm the exact current pet rules for this unit, we can pull the association's documentation on request. If a documented service animal or ESA is involved, separate federal accommodation rules can apply.
To verify the pet policy and other details of this $26,000,000, 4bd/5ba ~9600 sqft property, contact Christopher Lazaro, Key Biscayne Real Estate Professional, for accurate and up-to-date information to inform your purchase decision.
How is the price set and is there room to negotiate?
Miami-Dade condos have recently been closing at 94% of list, about 64 days on market, according to MIAMI REALTORS®, May 2026. This statistic provides context for the negotiability of the list price of $26,000,000 for the property at 430 Grand Bay Dr, Key Biscayne FL 33149. A more specific understanding of the property's value can be gained from a Comparative Market Analysis (CMA) that takes into account the unique characteristics of the building and its vicinity. For a property like this, with 4 bedrooms, 5 bathrooms, and approximately 9600 square feet, a Key Biscayne-specific CMA would be essential in determining a fair offer price. To verify the market value and discuss potential negotiation strategies, contact Christopher Lazaro, Key Biscayne Real Estate Professional, to review a customized CMA and explore the best approach for your offer.
What financing step do you recommend before touring?
To ensure a smooth process when considering a property like 430 Grand Bay Dr, listed at $26,000,000, it's essential to take a crucial step before touring: getting pre-approved for a mortgage. This involves consulting a Florida Licensed Mortgage Loan Originator, which can be done by visiting https://Get-PreApproved.com. Pre-approval provides clarity on your budget and demonstrates seriousness to sellers, making your offer more competitive. For a property of this caliber, with 4 bedrooms, 5 bathrooms, and approximately 9,600 square feet of living space, being prepared is key.
Once you have your pre-approval in place, you can confidently reach out to Christopher Lazaro, Key Biscayne Real Estate Professional, to verify the details of this exceptional property and schedule a viewing at your convenience, or discuss other properties that fit your criteria and budget, by contacting him directly to arrange a meeting or tour.
Monthly Fees & Carrying Costs
- Membership Required: No
- Application Fee: $150 (one-time)
Have a question about this Key Biscayne listing?
Talk directly with Christopher Lazaro, your Key Biscayne real estate advisor. No pressure — real answers.
Address
Open on Google Maps-
Address: Grand Bay Dr
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City: Key Biscayne
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State/county: Miami-Dade County
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Zip/Postal Code: 33149
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Area: GRAND BAY TOWER CONDO
Details
Updated on August 15, 2026 at 5:39 am-
Property ID A11915787
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Price $26,000,000
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Property Size 9600 Sq Ft
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Bedrooms 4
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Room 0
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Bathrooms 5
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Garage 0
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Year Built 1999
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Type Condominium
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Property Status Active, Residential
Additional details
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Flooring Ceramic Floor
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Waterfront Features Ocean Access, Ocean Front
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Bedroom Features Other, Primary Bath Shower, Primary Bath Tub, Sitting Area - Primary Bedroom
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Cooling Electric
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Association Type Condo
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Building GRAND BAY TOWER
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Association Fee Frequency Monthly
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Area Grand Bay Tower Condo
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Annual Tax 153827
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Association Yes
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Elementary School Keybiscayne
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Private Pool No
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Listing Terms All Cash, Conventional
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Waterfront Yes
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Full Bathrooms 4
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Subdivision GRAND BAY TOWER CONDO
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Total Stories 14
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Restrictions Ok To Lease
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Maintenance Includes Common Area, Manager, Security, Sewer, Trash Removal, Water
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Amenities Bike Storage, Community Room, Exercise Room, Pool
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Parking 2 Or More Spaces, Guest, Valet, No Rv/Boats
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Heating Electric
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Structure Type Condo 5+ Stories, Condo
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Tax Year 2024
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Construction CBS Construction
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Building Area 9600
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Covered Spaces 0
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Middle School Ponce De Leon
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Unit Floor 14
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View Bay, Ocean View, Direct Ocean
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Year Built Details Resale
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High School Coral Gables
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Pets Allowed Yes
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Unit Number PH-1AN
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Inclusions Deeded Beach Access
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Half Bathrooms 2
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Flood Zone AE
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Patio / Porch Open Balcony
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New Construction No
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Garage Spaces 0
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Style Condo 5+ Stories
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Association Fee 0
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Lot Size (Sq Ft) 0
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Membership Purchase Required No
Features
- Built-in Features
- Closet Cabinetry
- Den/Library/Office
- Dishwasher
- Disposal
- Dryer
- Electric Range
- Electric Water Heater
- Entrance Foyer
- Family Room
- Fire Sprinklers
- Great Room
- Has a View
- Has Cooling System
- Has Heating System
- Has Waterfront
- Home Owners Association
- Maid/In-Law Quarters
- Microwave
- Open Balcony
- Refrigerator
- Storage
- Utility Room/Laundry
- Volume Ceilings
- Walk-In Closet(s)
- Wall Oven
- Washer
Mortgage Calculator
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Down Payment
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Loan Amount
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Monthly Mortgage Payment
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Property Tax
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Home Insurance
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PMI
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Monthly HOA Fees