# Grand Bay Tower

As of 2026-10-30, Grand Bay Tower in Key Biscayne has 2 units for sale at a median asking price of $5.4M ($1,539/sqft); 2 units sold in the last 12 months.

Grand Bay Tower is a 12-story, 100-unit waterfront condominium at 430 Grand Bay Dr on Key Biscayne, built in 1999 and located in FEMA flood zone AE.

## Key facts

| | |
|---|---|
| Address | 430 Grand Bay Dr |
| Neighborhood | Key Biscayne |
| Year built | 1999 |
| Floors | 12 |
| Units | 100 |
| Waterfront | yes |
| Developer | Grand BAY Tower Associates, A Florida General Partnership |
| For sale | 2 |
| Pending | 2 |
| Median asking price | $5,400,000 |
| Median asking $/sqft | $1,539/sqft |
| Sold, last 12 months | 2 |
| Median sold $/sqft, 12 months | $1,510/sqft |
| Months of inventory | 12.0 |
| Median HOA | $3,884/mo |
| Parking | 1 assigned parking space, 1 valet |

## Own Miami measures

- **own.miami Building Score: 66 (B+)**
  - Value: 17 — $1,539/sqft — vs. Key Biscayne condos, then all of Miami
  - Momentum: 92 — +27.7% $/sqft over 6 months
  - Liquidity: 42 — 12.0 months of supply · 100 days on market
  - Health: 100 — Public records checked — no liens, lawsuits or complaints on file
  - Waterfront: 90 — Waterfront building
  - Age: 59 — Built 1999 — vs. Key Biscayne buildings
- **Own Miami Condo Index: 181** (above_market; 100 = the market-median building, 200 = twice its $/sqft; rank 81 of 698 tracked Miami condos)
- **Financeability Index: 33** (limited; 12-month window, 1 recorded mortgages, — of sales bank-financed, lowest down payment —, as of 2026-10-31)
- Special-assessment outlook: elevated (next structural milestone inspection due 2034)

## Building health (verified public records)

- Public records checked 2026-10-29: no liens, lawsuits or regulatory complaints found
- Legal & regulatory: 0 material cases active, 0 disputes active, 0 DBPR complaints (36 months) (2026-10-29)

## Frequently asked questions

**How much do condos at Grand Bay Tower cost?**

There are 2 condos for sale at Grand Bay Tower, from $3,900,000, with a median asking price of $5,400,000 ($1,539/sqft).

**How much are the HOA fees at Grand Bay Tower?**

HOA / maintenance fees at Grand Bay Tower run around $3,884 per month among units currently for sale; the exact fee varies by unit size and line, so confirm the current amount with the listing or the condo association.

**Is Grand Bay Tower a waterfront building?**

Yes — Grand Bay Tower is a waterfront building (Key Biscayne).

**When was Grand Bay Tower built?**

Grand Bay Tower was built in 1999, 12 stories, 100 residences.

**Who developed Grand Bay Tower?**

Grand Bay Tower was developed by Grand BAY Tower Associates, A Florida General Partnership.

## Related pages

- [Key Biscayne — neighborhood guide](https://own.miami/key-biscayne)
- [All units for sale at Grand Bay Tower](https://own.miami/buildings/grand-bay-tower/for-sale)
- [Ocean Club – Ocean Tower One](https://own.miami/buildings/ocean-club-ocean-tower-one)
- [Ocean Club – Ocean Tower Two](https://own.miami/buildings/ocean-club-ocean-tower-two)
- [Ocean Club – Club Tower Three](https://own.miami/buildings/ocean-club-club-tower-three)
- [Ocean Club – Club Tower Two](https://own.miami/buildings/ocean-club-club-tower-two)

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Source: Own.Miami — https://own.miami · data as of 2026-10-30
Canonical page: https://own.miami/buildings/grand-bay-tower
License: CC BY 4.0 — https://creativecommons.org/licenses/by/4.0/
Methodology: https://own.miami/methodology · For AI assistants: https://own.miami/for-ai