$18,900,000
5 bd · 6 ba · 8,435 sqft
445 Grand Bay Drive # PH-1A, Key Biscayne, FL 33149
GRAND BAY
Grand Bay Residences Building Guide
445 Grand Bay Dr, Key Biscayne, FL 33149 · Key Biscayne
Inside Grand Bay Residences
On 445 Grand Bay Dr in Key Biscayne, Grand Bay Residences is a residential condominium. We follow this building unit by unit: each line, floor and exposure trades at its own level, so the listings below are sorted by status — available, under contract and recently closed — rather than blended into a single average.
The layouts seen in recent MLS activity run from 2-bedroom plans up to 5-bedroom residences. Shared facilities on record for the building include exercise room, fire sprinklers, lobby secured, pool, bike storage and card entry — worth confirming with the association which are covered by the monthly dues and which carry their own fees. For closed prices, rents and time-to-sell by bedroom count, scroll to the twelve-month market report for Grand Bay Residences further down.
Building Record
- Address
- 445 Grand Bay Dr, Key Biscayne, FL 33149
- Median Price / SqFt
- $1,755
Shared Amenities at Grand Bay Residences
- Exercise Room
- Fire Sprinklers
- Lobby Secured
- Pool
- Bike Storage
- Card Entry
- Child Play Area
- Community Room
- Doorman
- Elevator Secure
- Fire Alarm
- Guard At Site
- Heated Pool
- Kitchen Facilities
- Secured Garage/Parking
- Security Patrol
- Smoke Detector
- Trash Chute
In-Unit Features at Grand Bay Residences
- Utility Room/Laundry
- Closet Cabinetry
- Dishwasher
- Disposal
- Dryer
- Electric Range
- Fire Sprinklers
- Microwave
- Open Balcony
- Refrigerator
- Cooking Island
- Direct Ocean
- Electric Water Heater
- Entrance Foyer
- Family Room
- Laundry Tub
- Media Room
- Ocean View
- Storage
- Walk-In Closet(s)
- Washer
- Bay
- Blinds
- Built-in Features
Finishes differ from unit to unit; check any feature against the specific listing before relying on it.
Layouts & Floor Plans in Grand Bay Residences
Unit layouts recorded in Grand Bay Residences listings, active and recently closed:
| Residence | Size Range | For Sale | For Rent | Sale Pricing | Avg $/SqFt |
|---|---|---|---|---|---|
| 2 Bed / 3 Bath | 1,760–2,950 sqft | — | 1 | — | — |
| 2 Bed / 4 Bath | 2,490–3,950 sqft | 1 | — | $6.9M | $1,747 |
| 3 Bed / 3 Bath | 2,840–2,950 sqft | — | — | — | — |
| 4 Bed / 5 Bath | 3,250–3,480 sqft | 1 | 1 | $4.0M | $1,215 |
Compiled from MLS records. Ask for the official plan of a particular line and we will send the developer drawing.
Grand Bay Residences Listings
Grand Bay Residences — Units for Sale
Grand Bay Residences — Units for Lease
Grand Bay Residences — Sales Under Contract
Grand Bay Residences — Closed Sales, Past Year
Grand Bay Residences — Leases Signed, Past Year
Grand Bay Residences: Twelve-Month Condo Readout
A rolling year of recorded closings and signed leases for Grand Bay Residences, recalculated as new MLS closings post. Switch the metric or bedroom count below to isolate the part of the building stock you are shopping.
- Closed sales:
- 3
- Median closed:
- $3.5M
- Per sqft:
- $1,006
- Median days to sell:
- 45
- Year over year:
- +27.3%
- Leases signed:
- 4
- Median rent:
- $13,000/mo ($6.25/sqft)
$3.5M
Median (12 mo)
3
Sales (12 mo)
45 days
Median DOM
Last 12 Months by Bedroom Count
| Residence | Sales | Median Sold | Sold $/SqFt | DOM | Leases | Median Rent | Rent $/SqFt |
|---|---|---|---|---|---|---|---|
| 2 Bed | 1 | $2.7M | $925 | 47 | 2 | $11,000 | $6.25 |
| 3 Bed | 1 | $5.2M | $1,327 | 3 | 2 | $22,000 | $6.32 |
| 4+ Bed | 1 | $3.5M | $1,006 | 45 | — | — | — |
Month-by-month table — All
| Month | Sales | Median Sold | Sold $/SqFt | DOM | Leases | Median Rent | Rent $/SqFt |
|---|---|---|---|---|---|---|---|
| Dec 2025 | — | — | — | — | — | — | — |
| Jan 2026 | — | — | — | — | 1 | $13,000 | $4.41 |
| Feb 2026 | 2 | $3.5M | $1,006 | 47 | — | — | — |
| Mar 2026 | — | — | — | — | — | — | — |
| Apr 2026 | 1 | $5.2M | $1,327 | 3 | — | — | — |
| May 2026 | — | — | — | — | 1 | $11,000 | $6.25 |
| Jun 2026 | — | — | — | — | 1 | $10,000 | $3.89 |
| Jul 2026 | — | — | — | — | — | — | — |
| Aug 2026 | — | — | — | — | — | — | — |
| Sep 2026 | — | — | — | — | — | — | — |
| Oct 2026 | — | — | — | — | 1 | $22,000 | $6.32 |
| Nov 2026 | — | — | — | — | — | — | — |
Where Grand Bay Residences Sits
Towers to Compare With Grand Bay Residences
Comparable Key Biscayne buildings whose current listings overlap the Grand Bay Residences price band — worth touring side by side:
Questions Buyers Ask About Grand Bay Residences
Which association documents should I review before buying at Grand Bay Residences?
Request the current budget, the reserve study, at least a year of board minutes, the rules and regulations, and a written statement of any special assessment that is approved or under discussion. Florida's condo-safety laws now require milestone structural inspections and structural integrity reserve studies for buildings of three or more stories, so ask where Grand Bay Residences stands on both.
Does Grand Bay Residences allow pets?
Pet policy is set by the Grand Bay Residences association and can limit the number, size or type of animals — and a board vote can change it. Get the current rule in writing before you make an offer; we request it as a standard step on every condo purchase we handle.
What leasing rules apply to owners at Grand Bay Residences?
Minimum lease length, how many times a year a unit may be leased, tenant approval and any waiting period for new owners are association decisions. If you plan to rent the unit out, verify the current policy first; the rental and leased tabs on this page show the lease activity recorded here.
How do view lines and floor height affect value at Grand Bay Residences?
Inside one tower, price follows the stack: exposure, view corridor, floor height and whether the line is a corner unit all matter. Compare closed prices by bedroom count in the market report, then ask us which lines in Grand Bay Residences face which direction before you build a shortlist.
Does a unit at Grand Bay Residences come with parking?
Parking arrangements differ by building and sometimes by unit — assigned spaces, valet, or spaces conveyed as limited common elements. Confirm how many spaces transfer with the specific residence and whether guest parking or storage costs extra.
How does Gromadzki Real Estate price a unit in Grand Bay Residences?
Building first: closings in the same line and bedroom count, then nearby floors, then comparable towers in Key Biscayne. The association's health — reserves, assessments and insurance — gets equal weight, because it shapes the monthly cost of ownership as much as the purchase price does.
What is the street address of Grand Bay Residences?
The building's address is 445 Grand Bay Dr, Key Biscayne, FL 33149 — part of Key Biscayne. The map lower on this page pins its exact location.
Grand Bay Residences: Building Notes
Building file: Grand Bay Residences, Key Biscayne, Key Biscayne, Florida 33149 (Miami-Dade County). Before any offer here we pull the association's current budget, reserve funding, recent board minutes, any approved or proposed special assessment and the building's milestone-inspection status, then price the unit against closings in its own line before looking at neighboring towers. Buyers weighing Grand Bay Residences usually tour Oceana Key Biscayne, Grand Bay Tower and Ocean Towers as well. To see a specific unit or ask which lines face which direction, call Matthew Gromadzki at +1 786-370-8570.