Price cut $600K3D tour
$17,900,000
350 Ocean Drive #LPH2N, Key Biscayne 33149
Est. $135,354/mo with 20% down incl. HOA
Listing courtesy of BHHS EWM Realty · BeachesMLS
$18,900,000445 Grand Bay Drive #PH-1A, Key Biscayne, FL 33149
Listing courtesy of One Sotheby's International Realty · 305-365-2811 · BeachesMLS
Full disclosure: what this home really costs
12 of 12 answered from real sources. Anything not in the listing says so, and one tap asks Zach. Nothing here is guessed. Source: BeachesMLS listing, updated Oct 30, 2026, unless a row says otherwise.
- Price
- $18,900,000 · $2,241/sqft
- Property taxes
- $54,141/yr (2025 bill). A new owner's bill is reset from the sale price and is usually higher; Zach can pull the county estimate.
- HOA / condo fee
- $9,923/moFrom the listing, unconfirmed
- Fee covers
- Cable TV, Maintenance Grounds, Security, Sewer, Water, Common Areas
- Special assessments
- None listed
- Mandatory club / membership
- Not required per the MLS
- Insurance (estimate)
- About $1,816/yr (HO-6 condo policy, county average). Get a real quote before you offer.Florida OIR county average with wind, data as of Mar 31 2026
- Flood zone
- Zone AE: high-risk flood area, base flood elevation 9 ft. Lenders require flood insurance here; get a quote.FEMA flood map, checked Oct 28, 2026
- Monthly payment (estimate)
- $143,042/mo: $103,043 loan + $29,925 tax + $151 insurance + $9,923 HOA. 20% down, 7.24% rate (Freddie Mac, week of October 29, 2026), 30 years. Change the numberszach.homes calculator (not a loan offer)
- Year built
- 1997 · 14 stories
- Days on market
- About 261 days
- Price history (this listing)
- Listed Feb 14, 2026.
Details
- TypeCondo
- Beds5 bd
- Baths5.5
- Size8,435 sqft
- Year built1997
- PoolCommunity
- WaterfrontYes: Deeded Beach Access, Ocean Access, Ocean Front
- ViewBay, Direct Ocean, Ocean
- FurnishedUnfurnished
- 55+ statusMarked 55+ in MLS - ask Zach to confirm
- NeighborhoodGRAND BAY RESIDENCES COND
- ZIP33149
- MLS #A11954185
- To the beachAbout 0.1 mi (straight line to the nearest ocean beach, OpenStreetMap; not a drive time)
Check your commute (opens maps)
From the listing
High above the turquoise waters of Key Biscayne rises a penthouse that simply cannot be replicated. Once featured in Architectural Digest, this legendary corner residence at Grand Bay is a statement of scale, design, and presence. From sunrise over the Atlantic to glittering sunsets across Biscayne Bay and the Miami skyline, the views are cinematic in every direction, offering endless blue water, golden light, and exceptional privacy. Spanning an extraordinary 8,435 square feet under air and 2,825 square feet of terraces, totaling 11,260 square feet as per the developer’s floor plan, the residence is defined by soaring 12-foot ceilings and grand proportions throughout. A dramatic foyer leads to a spectacular Grand Room designed for both intimate living and large-scale entertaining. The formal dining room is separate and elegant, while the completely remodeled kitchen and family room provide comfort and functionality. The fully renovated private library and custom bar enhance the home’s entertaining appeal. The primary suite is serene and expansive. All the bathrooms have just been completely remodeled, offering a fresh spa-inspired experience finished to today’s highest standards. Four (4) additional en-suite bedrooms ensure comfort and privacy. The terraces offer expansive outdoor living in the sky, perfect for sunrise mornings and sunset evenings overlooking the water and skyline. This is not simply a penthouse. It is a landmark residence, rare and impossible to duplicate.
Monthly payment calculator
Rate: 7.24% 30-year fixed average (Freddie Mac, week of October 29, 2026). Your own rate may differ; you can change it here.
Estimate, not a loan offer. Tax default: the higher of the seller's bill and about 1.9% of price (Florida resets a new owner's assessment). Insurance default: Florida OIR county average with wind, data as of Mar 31 2026. Rate is an assumption; your lender sets the real one. Zach doesn't take lender or title referral fees.
Florida risk facts
- Flood zone
- Zone AE: high-risk flood area. A FEMA Special Flood Hazard Area (about a 1% chance of flooding each year). Lenders require flood insurance for federally backed mortgages here. Source: FEMA National Flood Hazard Layer, checked Oct 28, 2026. This is a map lookup, not an official flood zone determination.
- Wind and building code
- Built in 1997, before the statewide Florida Building Code took effect in 2002. Ask for the wind mitigation report; it can lower insurance. My Safe Florida Home offers free inspections and grants when funded.
- Disclosure
- Florida sellers must give you a flood disclosure about known flood damage, insurance claims and federal assistance (§689.302).
We don't show crime scores or rate neighborhoods. Every listing is open to everyone.
Condo health facts
- Building
- 445
- Year built
- 1997 (29 years old)
- Stories
- 14
- HOA / condo fee
- $9,923/mo (from the listing, unconfirmed)
- Fee covers
- Cable TV, Maintenance Grounds, Security, Sewer, Water, Common Areas
- Pets
- Yes, Pet Restrictions Possible
- Milestone inspection
- Due by Dec 31, 2027 for buildings 3+ stories (local officials can require it at 25 years).
- Reserve study (SIRS)
- Condo buildings 3+ stories must have a structural integrity reserve study. Look up the building's filing in the state condo database (DBPR) or ask Zach for the document pack.
Facts only, from the listing and state law. We don't grade buildings. How Florida's condo safety laws work.
Start an offer
- Pre-approval letter or proof of funds (cash)
- The price you'd offer and your deposit
- Financing type and closing date
- Inspection period you want (often 10-15 days)
- Condo documents review: Florida gives you a review period after you receive the association documents
- A signed buyer agreement with Zach (Florida practice before touring or offering)
Nothing here is a binding offer. Zach calls you, checks the comps and writes the contract with you.
Ask Zach anything
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Zach will reply as soon as he can.
From finding it to the keys, one agent
- Find it
Every home for sale and rent from the MLS, with the real monthly cost. Or tell Zach what you want and he looks for you. - Tour it
Same day when the listing side allows, in person or live video. - Afford it
Real Florida costs up front: taxes, HOA, insurance, flood zone, assessments. Buyers: pre-approval with a lender you choose. Renters: your renter résumé and documents in one place. - Make the offer or apply
Zach writes the offer or the application, negotiates, and handles the association approval. - Close or get the keys
Zach tracks every deadline through inspections, condo documents and closing or lease signing, then stays your agent after.
Report a problem with this listing
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Listing courtesy of One Sotheby's International Realty · 305-365-2811 · BeachesMLS
All listings featuring the BMLS logo are provided by BeachesMLS, Inc. This information is not verified for authenticity or accuracy and is not guaranteed. Copyright ©2026 BeachesMLS, Inc. Listing data last updated Nov 2, 2026, 6:06 AM ET. Listing information is deemed reliable but not guaranteed. zach.homes estimates and Zach's notes are shown separately from MLS data and labeled with their source.