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Condominium at 430 Grand Bay Drive # 1103, Key Biscayne FL 33149Active
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Waterfront · Condominium
$6,850,000$1,887 / sqft

430 Grand Bay Drive # 1103, Key Biscayne FL 33149

3
Bedrooms
4
Bathrooms
3,630 sqft
Interior
1999
Year built
$4,084 / mo
HOA
Condominium
Type

About this home

A truly exceptional opportunity at Grand Bay Tower. This extraordinary residence showcases one of the building’s most unique and highly sought-after floor plans (03 line), a rare offering that combines elegance, comfort, and breathtaking views in perfect harmony. Perched on the 11th floor, the residence enjoys spectacular panoramic vistas of the Atlantic Ocean, Biscayne Bay, and the Miami skyline. Two expansive terraces invite you to experience both sunrise and sunset, while enjoying refreshing ocean breezes and seamless indoor-outdoor living. Impeccably maintained and flooded with natural light, this sophisticated home offers 3 spacious en-suite bedrooms, a powder room, and a spectacular den that serves as a private retreat and truly elevates the living experience. Thoughtfully designed throughout, the residence exudes warmth, character, and a sense of comfort rarely found in condominium living. Located just steps from the beach and within walking distance of restaurants, cafés, and shops, this exceptional residence offers the perfect blend of luxury, sophistication, and convenience. More than just an apartment, it is a place with soul…a true home in one of Key Biscayne’s most desirable addresses.

Features

  • Built-in Features
  • Closet Cabinetry
  • Entrance Foyer
  • Walk-In Closet(s)
  • Den/Library/Office
  • Utility Room/Laundry
  • Open Balcony
  • Ocean View
  • Direct Ocean

Location

Approximate — shows the building, not the unit. Open in maps (opens in a new tab)

Estimated loan & HOA

$38,721

Loan payment and HOA only. Property tax and insurance are significant here and are not included.

Principal & interest
$34,637
HOA
$4,084 / mo

Illustration only — not a loan offer, quote, or commitment. Assumes a 30-year loan at 6.5% with 20% down (rates as of July 2026); your actual terms will differ.

Schedule a tour

Request a private or video tour with a local agent.

Courtesy of
One Sotheby's International Realty

Run the numbers

We fill in the price and the building's HOA dues. That leaves rent, tax, insurance and maintenance — they depend on your exemptions, your insurer and the unit, so we don't guess them. Vacancy and the loan terms below start at common defaults; change them.

Our default, not a market figure
From the listing
Depends on assessed value & exemptions
Varies widely by building
Repairs, turnover, management

Cap rate
Cash-on-cash
Monthly cash flow
Net operating income

Enter rent, property tax, insurance, maintenance to see the returns. A cap rate calculated without every cost overstates the deal — often by half — so we don't show a partial one.

Illustration only — not a loan offer, quote, or investment advice. The loan fields start at 20% down over 30 years at 6.5% (rates as of July 2026); that is a nominal rate for illustration, not an APR, and your actual terms will differ. Cap rate is unlevered; cash-on-cash counts the down payment as invested capital and excludes closing costs.

Listing data from the MIAMI Association of REALTORS® (MIAMIRE) IDX program. Information deemed reliable but not guaranteed. Demo data shown for layout purposes.