Grand Bay Tower Condos for Sale & Rent in Key Biscayne
Grand Bay Tower condos in Key Biscayne, FL: 2 for sale from $3,900,000, rentals, recent sales, price per square foot and association fees from live MLS data, updated daily.
Grand Bay Tower at a Glance
| Address | 430 GRAND BAY DR |
|---|---|
| Year built | 1999 |
| Units for sale | 2 |
| Asking prices | $3,900,000 to $6,900,000 |
| Median asking price per sq ft | $1,539/sq ft |
| Median association fee | $4,241/mo |
| Units for rent | 0 |
| Median asking rent | n/a |
| Sold in the last 12 months | 2 |
| Median sold price | $5,695,000 |
| Sale price as % of list | 96.3% |
| Leased in the last 12 months | 6 |
| Median leased rent | $19,000/mo |
| Median leased rent per sq ft | $5.25/sq ft |
| Average days to lease | 82 days |
| Leased rent as % of asking | 97.2% |
| Water frontage | Ocean Front, Ocean Access, No Fixed Bridge |
| Pet policy (per listings) | No, Pet Restrictions Possible |
Source: BeachesMLS, every listing at the building's address; figures refresh daily. Not an appraisal.
About Grand Bay Tower
Grand Bay Tower is an oceanfront condominium at 430 Grand Bay Drive in Key Biscayne. Its address is 430 Grand Bay Drive, built in 1999 according to the MLS. Listings describe its water frontage as ocean front, ocean access, no fixed bridge. Listings in the building are marked age restricted (55 and over); confirm the association's rule for the unit. This page gathers every unit the MLS shows at the building's address: the ones for sale, the rentals and the closings of the last twelve months.
Grand Bay Tower Condos for Sale
2 units are for sale at Grand Bay Tower right now, from $3,900,000 to $6,900,000, at a median $1,539 per square foot, with 2 to 4 bedrooms. The median association fee on these listings is $4,241 a month; what it covers differs by building, so confirm it for the unit.
Recent Sales and Rentals at Grand Bay Tower
2 units closed in the last twelve months at a median $5,695,000 ($1,511 per square foot), at 96.3% of the asking price after 45 days on market. No unit is listed for rent right now; the association sets whether and how often units may be leased.
Before You Buy at Grand Bay Tower
Florida requires milestone structural inspections and fully funded structural reserves for condominium buildings three stories and taller, so the building's inspection reports, its reserve study, the current budget and any special assessment matter as much as the unit. We also read the rules on leasing, pets, renovations and the association's approval process, and check the insurance and the flood zone, before you make an offer at Grand Bay Tower.
Units for Sale at Grand Bay Tower
Units for Rent at Grand Bay Tower
No unit is listed for rent right now.
Recently Sold at Grand Bay Tower
Sold $6,150,000
Closed Oct 30, 2026 · 430 Grand Bay Drive 1103, Key Biscayne FL 33149
3 bd · 4 ba · 3,630 sq ft · $1,694/sq ft · 86 days on market · 89.8% of list priceSold $5,240,000
Closed Apr 20, 2026 · 430 Grand Bay Drive 902, Key Biscayne FL 33149
3 bd · 6 ba · 3,950 sq ft · $1,327/sq ft · 3 days on market · 102.7% of list price
Own a Condo at Grand Bay Tower?
A buyer working with BreakThru Realty may already be looking for a residence like yours. BreakThru Realty works with hundreds of prequalified buyers searching for properties. Request a review of recent sales at Grand Bay Tower, the competing listings in the building and your selling options, with no buyer named and nothing shared until you decide.
- A value range built from comparable Grand Bay Tower sales, with the reasoning
- Whether a buyer already working with BreakThru Realty is looking for a property like yours
- The plan that reaches the rest of the market if no buyer on file fits
- An estimate of your selling costs and what you would keep after closing
Explore My Grand Bay Tower Selling Options · Get My Key Biscayne Home Value
Leased at Grand Bay Tower in the Last 12 Months
What units at the building actually rented for: each closed lease with the rent it closed at, the days it took and how it compared with the asking rent. Rental portals show asking rents; these are achieved rents from BeachesMLS.
Sold $18,000
Closed Jul 13, 2026 · 430 Grand Bay Drive 904, Key Biscayne FL 33149
4 bd · 6 ba · 3,680 sq ft · $5/sq ft · 175 days on market · 100% of list priceSold $16,000
Closed Jul 1, 2026 · 430 Grand Bay Drive 207, Key Biscayne FL 33149
5 bd · 5 ba · 3,170 sq ft · $5/sq ft · 0 days on market · 88.9% of list priceSold $17,000
Closed Jun 1, 2026 · 430 Grand Bay Drive 608, Key Biscayne FL 33149
3 bd · 5 ba · 2,840 sq ft · $6/sq ft · 0 days on market · 94.4% of list priceSold $20,000
Closed May 8, 2026 · 430 Grand Bay Drive 1204, Key Biscayne FL 33149
3 bd · 5 ba · 3,680 sq ft · $5/sq ft · 112 days on market · 100% of list priceSold $20,000
Closed May 1, 2026 · 430 Grand Bay Drive 302, Key Biscayne FL 33149
3 bd · 6 ba · 3,950 sq ft · $5/sq ft · 206 days on market · 80% of list priceSold $20,000
Closed Nov 15, 2025 · 430 Grand Bay Drive 608, Key Biscayne FL 33149
3 bd · 5 ba · 2,840 sq ft · $7/sq ft · 0 days on market · 111.1% of list price
Grand Bay Tower: Frequently Asked Questions
- How much do condos at Grand Bay Tower cost?
- Units at Grand Bay Tower are listed from $3,900,000 to $6,900,000 right now, a median $1,539 per square foot. Over the last twelve months units closed at a median $5,695,000. Floor, view and renovation drive the spread; these figures refresh daily from the MLS.
- What are the association fees at Grand Bay Tower?
- The median association fee on current and recent listings at Grand Bay Tower is $4,241 a month. Fees vary by unit size and what the association covers, and older buildings may add special assessments for inspections and repairs, so we confirm the fee, the budget and any assessment for the specific unit.
- Can I rent out a unit at Grand Bay Tower?
- The Grand Bay Tower association decides: most South Florida condominiums set a minimum lease term, limit how many times a year a unit may be leased and require tenant approval, and some require an owner to hold the unit for a period first. we read the current rules before you buy.
- Are pets allowed at Grand Bay Tower?
- Listings at Grand Bay Tower describe the pet policy as "No, Pet Restrictions Possible". Weight, breed and number limits are set by the association and can change, so we confirm the current rule for your pet before you offer or apply.
- How do I see a unit at Grand Bay Tower?
- Request a showing from any listing on this page, or ask a BreakThru agent to arrange a private tour of the units for sale or for rent at Grand Bay Tower. We also compare the building with similar Key Biscayne condominiums so you can see the choice side by side.
To request a tour, call (786) 914-1017 or email sales@breakthrurealty.com.
Explore
- Key Biscayne condos
- Key Biscayne oceanfront condos
- Key Biscayne waterfront condos
- Key Biscayne luxury condos
- Key Biscayne condos under $500,000
- Key Biscayne new construction
- Oceana Key Biscayne condos
- Casa del Mar condos
- Club Tower Three at The Ocean Club condos
- Club Tower Two at The Ocean Club condos
- Commodore Club East condos
- Commodore Club South condos
- Emerald Bay at Key Colony condos
- Gardens of Key Biscayne townhomes
- Grand Bay Residences condos
- Key Biscayne Ambassador condos
- Key Colony No. 1 condos
- Lake Tower at The Ocean Club condos
- Lake Villa II at The Ocean Club condos
- Mar Azul condos
- Ocean Tower One at The Ocean Club condos
- Ocean Tower Two at The Ocean Club condos
- The Sands of Key Biscayne condos
- Towers of Key Biscayne condos
- Key Biscayne real estate
- Key Biscayne housing market report
- Sell your Key Biscayne unit
- Lease out your Key Biscayne unit: landlord services