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Grand Bay Tower Condos For Sale

Ultra Luxury
Ultra LuxuryAbove $1,000 per SqFt
High-End$650 - $1,000 per SqFt
Mid-Tier$400 - $650 per SqFt
Premium$300 - $400 per SqFt
Entry-LevelBelow $300 per SqFt
High-Rise
Building with 13+ floors or above
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Reviews (
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Market Action
Selling Speed
Slow
2
Inventory Supply
High
50
Sales Activity
Steady
0.8
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Grand Bay Tower, 430 Grand Bay Dr #307, Key Biscayne, Florida 33149, image 1
Grand Bay Tower, 430 Grand Bay Dr #307, Key Biscayne, Florida 33149, image 2
Grand Bay Tower, 430 Grand Bay Dr #307, Key Biscayne, Florida 33149, image 3
$3,400,000
  • 3 Beds
  • 4 Baths
  • 2,840 SqFt
  • $1,197/SqFt
Ultra Luxury
Condo for sale in Grand Bay Tower
430 Grand Bay Dr #307, Key Biscayne, FL 33149
Step off your private elevator into your own foyer and feel instantly at home. This updated, light-filled 3br + maid's quarters / 4ba offers a wonderfully functional layout - open living and dining area, family room, and a partially open kitchen with snack counter, all flowing to a spacious garden terrace with peaceful green views. Three full ensuite bedrooms. The primary suite is bright and spacious with its own private balcony. Impact windows throughout. Move-in ready. Boutique building. Enjoy grand bay's five-star amenities: beach service, pool, fitness center, concierge, valet, tennis and padel courts, and more - all steps from the ritz-carlton! Island living at its finest.
Grand Bay Tower, 430 Grand Bay Dr #708, Key Biscayne, Florida 33149, image 1
Grand Bay Tower, 430 Grand Bay Dr #708, Key Biscayne, Florida 33149, image 2
Grand Bay Tower, 430 Grand Bay Dr #708, Key Biscayne, Florida 33149, image 3
$3,490,000200K
  • 3 Beds
  • 3 Baths
  • 2,840 SqFt
  • $1,229/SqFt
Ultra Luxury
Condo for sale in Grand Bay Tower
430 Grand Bay Dr #708, Key Biscayne, FL 33149
Rare opportunity in one of key biscayne's most sought-after buildings. This corner residence offers sweeping views of biscayne bay and the miami skyline, framed by 3 balconies throughout. The kitchen features top-of-the-line appliances, a center island and a sun-filled breakfast nook — a true chef's dream. Marble flooring flows through the expansive, open living and dining areas, ideal for entertaining, while rich dark wood grounds the bedrooms with warmth. 3 full bedrooms, 2 full baths, plus a maid's quarters with full bath. Generous walk-in closets throughout. A private entrance sets the tone the moment you arrive — your own island getaway, move-in ready.
Grand Bay Tower, 430 Grand Bay Dr #801, Key Biscayne, Florida 33149, image 1
Grand Bay Tower, 430 Grand Bay Dr #801, Key Biscayne, Florida 33149, image 2
Grand Bay Tower, 430 Grand Bay Dr #801, Key Biscayne, Florida 33149, image 3
$6,900,000
  • 2 Beds
  • 31/2 Baths
  • 3,950 SqFt
  • $1,747/SqFt
Ultra Luxury
Condo for sale in Grand Bay Tower
430 Grand Bay Dr #801, Key Biscayne, FL 33149
Commanding breathtaking atlantic vistas from its privileged eighth-floor setting at grand bay tower, this residence is a rare offering on key biscayne. Enjoying an unusually private setting with unobstructed ocean views and minimal visibility from neighboring residences, the home offers a level of seclusion seldom found in oceanfront condominium living. Originally a three-bedroom, five-and-a-half-bath home, it has been masterfully reimagined into a grand two-bedroom, three-and-a-half-bath layout, enhancing scale and flow for refined entertaining and effortless daily living. Spanning approximately 3, 950 square feet, the living and dining areas, a cozy family room, and a bright kitchen with breakfast area are complemented by three terraces totaling approximately 595 square feet, seamlessly integrated to capture sweeping atlantic views from every room. Custom woodwork by renowned designer juan montoya enriches the interiors, while the serene primary suite offers a secluded sitting room, bespoke closets, and a spa-inspired bath, creating a private sanctuary within this singular home. The sale includes a private guest quarters—an increasingly rare and coveted amenity at grand bay—as well as two storage units. Combining exceptional scale, refined finishes, remarkable privacy, unobstructed atlantic views, and desirable ancillary spaces, this residence represents a unique opportunity within one of key biscayne’s most prestigious oceanfront buildings.

Subdivision Amenities

Beach Rights
Bike Storage
Clubhouse
Controlled Access
Elevators
Fitness Center
Guard
Hobby Room
Maintenance
Management
Playground
Pool
Sauna
Security
Storage
Trash

HOA Cost Benchmark

$0.89 / Sq.Ft.

Monthly ownership cost
1%below peers
1%above city avg
This Community
$0.89
Comparable Ultra Luxury Avg
$0.90
Key Biscayne, FL Avg
$0.88
$0.00
$0.63
$1.25
Lower than peers, higher than the city average
Peer Set · 15 comparable communities
See Cost Context

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Nearby Subdivisions

High-End
0.08 miles
For Sale (2)
$2.5M - $18.9M
For Rent (1)
$10K - $10K
Ultra Luxury
0.09 miles
For Sale (1)
$1.1M - $1.1M
Ultra Luxury
0.10 miles
For Sale (6)
$3.7M - $17.9M
For Rent (9)
$18K - $32K
High-End
0.16 miles
For Rent (1)
$27K - $27K
Mid-Tier
0.19 miles
For Sale (1)
$720K - $720K

Schools

Scores

Walk Score®
Somewhat Walkable. Some errands can be accomplished on foot
52

100
Bike Score®
Bikeable. Some bike infrastructure
52

100
Sound Score®
Bearable noise
84

100
Airport Score
Close to airports. Noticeable airport activity
0

100
Traffic Score
Congested area. Frequent traffic delays
20

100
Local Score
Limited local amenities nearby
0

100

Grand Bay Communities in Key Biscayne, FL

Community Residences

Stack/LineFloor
Bed/Bath
Size SqFt
ExposureView
011‑125.5/33,950
East
Southeast
Ocean
Water
Pool
Garden
022‑125.5/33,950
East
Ocean
032‑125.5/33,630
Northeast
Ocean
City
042‑126.5/43,680
South
Ocean
Water
Pool
053‑123.5/32,930
East
Ocean
063‑123.5/32,930
North
City
Water
073‑124/32,840
Southeast
Garden
Ocean
083‑124.5/32,840
Northeast
North
Ocean
Bay
Garden
Stack/Line: 01
Floor: 1‑12
Bed/Bath: 5.5/3
Size SqFt: 3,950
Exposure:
East
Southeast
View:
Ocean
Water
Pool
Garden
Stack/Line: 02
Floor: 2‑12
Bed/Bath: 5.5/3
Size SqFt: 3,950
Exposure:
East
View:
Ocean
Stack/Line: 03
Floor: 2‑12
Bed/Bath: 5.5/3
Size SqFt: 3,630
Exposure:
Northeast
View:
Ocean
City
Stack/Line: 04
Floor: 2‑12
Bed/Bath: 6.5/4
Size SqFt: 3,680
Exposure:
South
View:
Ocean
Water
Pool
Stack/Line: 05
Floor: 3‑12
Bed/Bath: 3.5/3
Size SqFt: 2,930
Exposure:
East
View:
Ocean
Stack/Line: 06
Floor: 3‑12
Bed/Bath: 3.5/3
Size SqFt: 2,930
Exposure:
North
View:
City
Water
Stack/Line: 07
Floor: 3‑12
Bed/Bath: 4/3
Size SqFt: 2,840
Exposure:
Southeast
View:
Garden
Ocean
Stack/Line: 08
Floor: 3‑12
Bed/Bath: 4.5/3
Size SqFt: 2,840
Exposure:
Northeast
North
View:
Ocean
Bay
Garden

Penthouses & Tower Suites

Stack/LineFloor
Bed/Bath
Size SqFt
ExposureView
PH1ANPH5.5/59,600
Bay
Ocean
PH1CSPH‑/‑3,680
PH1DNPH‑/‑2,930
PH1DSPH‑/‑2,930
PH1ESPH‑/‑4,420
PH2ANPH‑/‑5,350
PH2ASPH‑/‑5,350
PH2CSPH‑/‑3,680
PH2DNPH‑/‑2,930
PH2DSPH3.5/32,930
Ocean
Stack/Line: PH1AN
Floor: PH
Bed/Bath: 5.5/5
Size SqFt: 9,600
Exposure:
View:
Bay
Ocean
Stack/Line: PH1CS
Floor: PH
Bed/Bath: ‑/‑
Size SqFt: 3,680
Exposure:
View:
Stack/Line: PH1DN
Floor: PH
Bed/Bath: ‑/‑
Size SqFt: 2,930
Exposure:
View:
Stack/Line: PH1DS
Floor: PH
Bed/Bath: ‑/‑
Size SqFt: 2,930
Exposure:
View:
Stack/Line: PH1ES
Floor: PH
Bed/Bath: ‑/‑
Size SqFt: 4,420
Exposure:
View:
Stack/Line: PH2AN
Floor: PH
Bed/Bath: ‑/‑
Size SqFt: 5,350
Exposure:
View:
Stack/Line: PH2AS
Floor: PH
Bed/Bath: ‑/‑
Size SqFt: 5,350
Exposure:
View:
Stack/Line: PH2CS
Floor: PH
Bed/Bath: ‑/‑
Size SqFt: 3,680
Exposure:
View:
Stack/Line: PH2DN
Floor: PH
Bed/Bath: ‑/‑
Size SqFt: 2,930
Exposure:
View:
Stack/Line: PH2DS
Floor: PH
Bed/Bath: 3.5/3
Size SqFt: 2,930
Exposure:
View:
Ocean

Key Biscayne
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