Williams Island 4000
4000 Island Blvd, Aventura, FL 33160
ALERTS FOR WILLIAMS ISLAND 4000
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Mark Zilbert is a Aventura real estate agent who follows every listing and sale at Williams Island 4000. Buyers and sellers can call or text Mark at (786) 280-0201.
Building Facts
| Developer | The Trump Group with Mutual Benefit Life |
|---|---|
| Architect | Robert M. Swedroe |
| Year Built | 1985 |
| Units | 180 |
| Floors | 32 |
| Unit sizes | 660 – 5,313 SqFt |
About Williams Island 4000
Williams Island 4000 holds 180 condo residences at 4000 Island Boulevard and was the island's first tower, in 1985. Robert M. Swedroe drew it for the Trump Group, which built Williams Island with Mutual Benefit Life on 84 acres bounded by Maule Lake and the canal to Dumfoundling Bay. Its studios to five-bedroom residences measure 660 to 5,313 SqFt, with Intracoastal views. Residents share the gated island's grounds, which include the Williams Island Club, a 27,000-SqFt spa, 16 lighted tennis courts and a 106-slip marina on the Intracoastal.
By Mark Zilbert, Global Real Estate Advisor · updated October 2026
Asking prices by bedrooms: 1 bed $340K to $750K · 2 beds $815K to $2.4M · 3 beds $1.9M to $2.2M · 4 beds from $1.4M

For Sale
8 units · avg asking $687/SqFt
| Unit ⇅ | Price ⇅ | Listed ⇅ |
|---|---|---|
| W-STE3Under Contract1 bed · 1,238 SqFt | $340,000$275/SqFt | 6/22/266/22 |
| 12051 bed · 1,235 SqFt | $749,999$607/SqFt | 9/29/269/29 |
| 4022 bed · 1,840 SqFt | $815,000$443/SqFt | 9/11/269/11 |
| 701New2 bed · 1,495 SqFt | $1,275,000$853/SqFt | 10/25/2610/25 |
| 26024 bed · 2,884 SqFt | $1,395,000$484/SqFt · ▼7.0% | 2/6/262/6 |
| 27013 bed · 2,470 SqFt | $1,850,000$749/SqFt | 1/7/261/7 |
| 23013 bed · 2,470 SqFt | $2,199,000$890/SqFt | 5/4/265/4 |
| W-STE62 bed · 2,463 SqFt | $2,430,000$987/SqFt · ▲86.9% | 11/2/1911/2/19 |
Pending Sales
Under contract, awaiting closing. The freshest signal of where prices are settling. In the MLS: For sale is Active or Active with Contract; these are Pending. The price shown is the asking price. The closed price appears in Sold when it records.
| Unit ⇅ | Price ⇅ | Pending ⇅ |
|---|---|---|
| 18043 bed · 2,130 SqFt | $999,000$469/SqFt | 10/23/2610/23 |
| 16043 bed · 2,130 SqFt | $845,000$397/SqFt | 10/3/2610/3 |
2 residences under contract
Sold · Last 12 Months
9 closed sales · avg $390/SqFt · avg 91% of last asking price
| Unit ⇅ | Sold Price ⇅ | % of Ask ⇅ | Closed ⇅ |
|---|---|---|---|
| 17044 bed · 3,365 SqFt | $1,250,000list $1,400,000 | 89% | 10/20/2610/20 |
| 22043 bed · 2,130 SqFt | $1,450,000list $1,500,000 | 97% | 10/14/2610/14 |
| 16043 bed · 2,130 SqFt | $675,000list $675,000 | 100% | 9/8/269/8 |
| 17043 bed · 3,365 SqFt | $1,100,000list $1,299,000 | 85% | 6/15/266/15 |
| 11051 bed · 1,235 SqFt | $360,000list $389,000 | 93% | 6/15/266/15 |
| 10072 bed · 2,120 SqFt | $716,000list $920,000 | 78% | 6/2/266/2 |
| 24023 bed · 2,130 SqFt | $975,000list $975,000 | 100% | 5/21/265/21 |
| 15032 bed · 1,508 SqFt | $490,000list $579,000 | 85% | 5/1/265/1 |
| 15072 bed · 2,120 SqFt | $820,000list $895,000 | 92% | 2/13/262/13 |
% of ask compares the closed price to the final list price. The building's full sold history, 172 sales, lives on the archive view.
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Location
4000 Island Blvd · Williams Island
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Williams Island 4000, 4000 Island Blvd, Aventura
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