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Waterfront · Condominium
$3,900,000$1,331 / sqft
430 Grand Bay Dr # 606, Key Biscayne FL 33149
Listed
4
Bedrooms
4
Bathrooms
2,930 sqft
Interior
1999
Year built
$3,370 / mo
HOA
Condominium
Type
About this home
The generously sized 4/4 unit, measuring an impressive 2,930 sf, WITH OCEAN VIEWS, presents a grand living area with formal dining, an oversized master suite with his and her closets, private balconies, a large laundry room with service (elevator) entry, and expansive windows throughout that provide a picturesque view of the Miami Downtown skyline and the beach. Each of the 4 bedrooms come with its own en-suite bathroom, ensuring utmost convenience and privacy for all. Sharing a beautifully curated gated community with The Ritz Carlton, Grand Bay Residences offers pristine pools, a tennis club, paddle courts, first class gym, spa, gardens and top chef restaurants. The building also offers concierge, and beach service, valet parking and more.
Features
- First Floor Entry
- Built-in Features
- Closet Cabinetry
- Cooking Island
- Elevator
- Other
- Skyline
- Water View
Leasing
- Minimum lease
- 365 days
- Leases permitted per year
- 1
Leasing terms as stated in the MLS listing, not verified by us. The association’s governing documents control what is actually permitted and can change — confirm before you buy.
Run the numbers
We fill in the price and the building's HOA dues. That leaves tax, insurance and maintenance — they depend on your exemptions, your insurer and the unit, so we don't guess them. Rent starts from what comparable units are asking nearby. Vacancy and the loan terms below start at common defaults; change them.
Median asking rent for 4-bed rentals across Miami-Dade, from 123 active listings; the middle half ask $15,000–$37,000.That is what landlords ask, not what units let for — edit it if you know better.
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 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. We are not a lender and neither offer nor arrange financing. 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.