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Williams Island

4000 ISLAND BLVD

Verified Data
This building structure and line mapping have been reviewed in the admin verification workflow and aligned with recorded unit and sales data.

Other buildings in Williams Island

  • Williams Island — 1000 island blvd
  • Williams Island — 2000 island blvd
  • Residence Du Cap
  • Williams Island — 2800 island blvd
  • Williams Island — 3000 island blvd
  • Bellini
  • Bella Mare
  • Villa Marina

These buildings are independent condominiums that are part of The Williams Island Property Owners' Association, which is the master association.

Image coming soon for Williams Island

SFCT Analysis

Valuation & Best Buy Analysis

Explore South Florida Condo Trends valuation and active-listing analysis for Williams Island.

Verified building

Specific Unit Valuation

Select a unit to view its SFCT estimated value and confidence.

No units with usable square footage are available for valuation.

SFCT estimates and Best Buy rankings are informational tools and are not appraisals, investment advice, or guarantees of market value. Listing and market data may change. Legal Disclaimer

Building Overview

Year Built

1985

Towers

1

Total Units

163

Sales (Last 12M)

14

Median Sale Price

$951,000

Median Price / Sq Ft

$412.03

Structural Integrity Reserve Study (SIRS)

SIRS Status Unverified

Source: Florida Department of Business and Professional Regulation · Data last updated: 2026-10-10 · View DBPR SIRS Reporting

We have not yet confirmed this building's association in Florida DBPR's SIRS Reporting Database.

Building structure and line configuration reviewed against unit and sales data.

Data available as of 2026-08-31.

Recent Sales Transactions

Sales data for the last 12 months.

14 rows
DateUnitSale Price
2026-06-151704$1,100,000
2026-06-021105$360,000
2026-05-291007$716,000
2026-05-202402$975,000
2026-04-291503$490,000
2026-02-101507$820,000
2025-12-08906$1,215,000
2025-10-282607$927,000
2025-10-142606$1,025,000
2025-09-261906$1,100,000
2025-09-19605$150,000
2025-09-032002$1,150,000
2025-08-212503$499,000
2025-07-31906$1,075,000

Bulk / Portfolio Transfers

Multiple units recorded together on one deed or at one price. Shown for reference only and not included in sale charts, medians, or price per square foot.

17 rows
DateUnitRecorded Price
2021-03-012905$880,000
2021-03-012906$880,000
2018-09-05PH3$2,067,700
2018-09-05PH4$2,067,700
2015-07-13805$1,070,000
2015-07-13806$1,070,000
2013-07-312905$542,500
2013-07-312905$817,500
2013-07-312906$542,500
2013-07-312906$817,500
2004-04-01805$655,000
2004-04-01806$655,000
1997-08-01805$455,000
1997-08-01806$455,000
1987-03-011102$1,004,000
1987-03-011405$1,004,000
1987-03-012102$1,004,000

Year Filters

These filters apply to both Sales by Line and Sales by Unit Size.

Chart Filters

Filter the charts by line or enable comparison groups to color-code multiple sets of lines.

Lines
Showing 132 sales used for price-per-square-foot calculations · All lines
Filtered Sales Count
132
Filtered Median Sale Price
$600,000
Filtered Median Price / Sq Ft
$327.79

Williams Island Sale Price History

Each point represents one recorded residential sale for 2015–2026. The line shows yearly median sale price. Line and unit filters apply to this chart. All residential sales are included, including non-standard lower-floor and upper-floor units.

Williams Island Price Per Sq Ft (PPSF) Sales History

Each point represents one recorded sale for 2015–2026, normalized by interior square footage. The line shows yearly median price per square foot. Data reflects building-wide sales included in the current analysis.

View Matching Sales

Review the exact sales used for the current chart filters.

132 rows
Sale DateUnitLineInterior Sq FtSale PricePrice / Sq Ft
6/15/20261704043,365$1,100,000$326.89
6/2/20261105051,235$360,000$291.50
5/29/20261007072,120$716,000$337.74
5/20/20262402022,130$975,000$457.75
4/29/20261503031,508$490,000$324.93
2/10/20261507072,120$820,000$386.79
12/8/2025906062,120$1,215,000$573.11
10/28/20252607072,120$927,000$437.26
10/14/20252606062,120$1,025,000$483.49
9/26/20251906062,120$1,100,000$518.87
9/19/2025605051,495$150,000$100.33
9/3/20252002022,130$1,150,000$539.91
8/21/20252503031,508$499,000$330.90
7/31/2025906062,120$1,075,000$507.08
5/29/2025905051,495$300,000$200.67
5/21/2025904041,840$551,000$299.46
4/21/20252106063,335$1,650,000$494.75
4/1/20251206062,120$526,000$248.11
3/25/20252803031,508$600,000$397.88
11/21/20241805051,235$415,000$336.03
9/9/20242301012,470$825,000$334.01
4/20/20241205051,235$485,000$392.71
2/22/20241906062,120$1,160,000$547.17
2/13/20242504042,130$1,155,000$542.25
1/30/2024101011,027$350,000$340.80
1/10/20242403031,508$660,000$437.67
1/8/20242701012,470$825,000$334.01
8/23/20232406062,120$1,225,000$577.83
8/10/2023805051,495$690,000$461.54
7/19/20232903031,508$562,500$373.01
6/6/20231605051,235$404,000$327.13
5/4/20232701012,470$915,500$370.65
4/26/20232506063,335$1,900,000$569.72
4/18/20231603031,508$680,000$450.93
3/20/2023801011,495$490,000$327.76
2/21/2023PH-1014,446$2,675,000$601.66
11/14/20221603031,508$640,000$424.40
11/4/20221606062,120$835,000$393.87
10/7/20222403031,508$618,000$409.81
9/7/2022PH-1014,446$2,157,000$485.16
7/18/20222206062,120$1,150,000$542.45
6/30/20222803031,508$414,300$274.73
6/15/20221207072,120$770,000$363.21
6/2/20222002022,130$950,000$446.01
5/17/20221106062,120$967,600$456.42
4/20/20222302022,130$776,300$364.46
4/1/20221703031,508$475,000$314.99
3/28/20222903031,508$425,000$281.83
3/28/20222506063,335$1,950,000$584.71
3/11/20222901012,470$1,850,000$748.99
2/15/20222103031,508$564,000$374.01
2/11/2022901011,495$570,000$381.27
2/9/20221605051,235$342,500$277.33
1/5/2022507072,120$975,000$459.91
12/28/20211807072,120$825,000$389.15
12/20/2021707072,120$890,000$419.81
12/14/2021704041,840$520,000$282.61
12/2/2021606062,120$850,000$400.94
11/19/2021603031,508$350,000$232.10
11/15/20212305051,235$430,000$348.18
11/12/2021803031,508$365,000$242.04
10/8/20211904042,130$793,000$372.30
9/16/20211503031,508$360,000$238.73
9/9/20211005051,235$374,800$303.48
8/24/20212706064,590$2,350,000$511.98
8/16/2021903031,508$335,000$222.15
8/10/2021806062,120$750,000$353.77
7/30/2021805051,495$540,000$361.20
7/8/2021601011,495$290,000$193.98
6/7/20211905051,235$230,000$186.23
6/2/20211707072,120$560,000$264.15
5/26/2021904041,840$450,000$244.57
5/13/20211104042,130$745,000$349.77
5/7/20211701012,470$620,000$251.01
4/15/20211204042,130$797,500$374.41
3/31/2021603031,508$220,000$145.89
3/1/20211205051,235$355,000$287.45
2/24/20211404042,130$503,000$236.15
2/18/2021605051,495$231,500$154.85
1/26/20212804042,130$700,000$328.64
1/25/20211107072,120$475,000$224.06
12/10/20202907072,120$505,000$238.21
12/7/20202206062,120$695,000$327.83
11/27/20202003031,508$220,000$145.89
10/26/20202404043,365$790,000$234.77
10/16/2020503031,508$259,500$172.08
8/30/20202101012,470$620,000$251.01
8/14/20201407072,120$550,000$259.43
6/15/2020707072,120$405,000$191.04
2/14/20201006062,120$540,000$254.72
2/7/20201906062,120$620,000$292.45
10/31/20192704042,130$600,000$281.69
10/16/20192607072,120$740,000$349.06
8/30/20191904042,130$742,400$348.54
8/1/20191506062,120$620,000$292.45
7/26/20191002022,130$599,000$281.22
6/25/20191205051,235$212,000$171.66
4/4/20191201012,470$600,000$242.91
1/30/20191104042,130$607,500$285.21
11/30/2018604041,840$535,000$290.76
8/8/20181807072,120$500,000$235.85
5/25/2018901011,495$437,000$292.31
4/20/2018506062,120$480,000$226.42
2/27/2018906062,120$527,500$248.82
9/21/20172506063,335$975,000$292.35
6/14/2017705051,495$375,000$250.84
6/12/20171005051,235$395,000$319.84
5/24/20172403031,508$375,000$248.67
3/16/20171703031,508$325,000$215.52
3/8/20172103031,508$390,000$258.62
2/1/2017905051,495$360,000$240.80
12/27/20162103031,508$375,000$248.67
12/8/20162204042,130$950,000$446.01
11/1/2016PH2024,078$1,450,000$355.57
9/30/20161004042,130$650,000$305.16
9/15/2016901011,495$557,500$372.91
8/25/2016602021,840$430,000$233.70
6/30/20161603031,508$365,000$242.04
4/1/20162107072,120$750,000$353.77
3/28/20162302022,130$777,500$365.02
3/4/2016507072,120$600,000$283.02
3/2/20162204042,130$550,000$258.22
2/11/20161204042,130$780,000$366.20
1/29/20162002022,130$850,000$399.06
1/25/20162804042,130$217,500$102.11
10/27/20152203031,508$560,000$371.35
10/20/20152901012,470$1,275,000$516.19
7/31/20151002022,130$725,000$340.38
7/30/20151003031,508$350,000$232.10
6/3/20151603031,508$291,300$193.17
4/14/20151006062,120$637,500$300.71
4/13/2015901011,495$547,500$366.22

Sales Count by Year

Showing recorded sales counts for 2015–2026.

20157
201614
20177
20185
20198
202010
202127
202219
20239
20248
202513
20266

Unit Sales History

Review recorded sales over time for a specific unit.

% Change compares each sale to the next older recorded sale for the same unit.

Select a unit to view its recorded sales history.

Sales by Line

Showing line-level sales for 2015–2026.

LineSales CountMedian Sale PriceMedian Price / Sq Ft
0117$620,000$340.80
0210$813,750$364.74
0327$390,000$258.62
0420$675,000$302.31
0518$367,400$289.48
0625$967,600$400.94
0716$728,000$343.40

Units

163 units shown for this building

Building work

Permits on the association's common areas and systems.

  1. 1. Suncoast Restoration And Painting, LLC

    Last permit May 2026Licensed

    6 jobs

  2. 2. Affordable Irrigation, Inc.

    Last permit Jun 2026

    2 jobs

  3. 3. Premier Fire Alarm & Integration Systems, Inc.

    Last permit Aug 2026

    1 job

  4. 4. MV Luxury Glass Corp

    Last permit Jun 2026

    1 job

  5. 5. Hoosier Plumbing LLC

    Last permit May 2026Licensed

    1 job

  6. 6. Bond Electric Inc.

    Last permit May 2026Licensed

    1 job

  7. 7. American Fire Sprinkler Services LLC

    Last permit Mar 2026

    1 job

Work in units

Permits for work inside individual units.

  1. 1. Infinity At Your Service LLC

    Last permit Aug 2026Licensed

    37 jobs

  2. 2. Sunshine Electrical Contractors Corp.

    Last permit Aug 2026Licensed

    9 jobs

  3. 3. Maury Engineering & Const Grou

    Last permit Jul 2026

    6 jobs

  4. 4. American Fire Sprinkler Services LLC

    Last permit Jun 2026

    5 jobs

  5. 5. MV Luxury Glass Corp

    Last permit Sep 2026

    3 jobs

  6. 6. The Clever Style LLC

    Last permit Aug 2026Licensed

    3 jobs

  7. 7. High Voltage Services LLC

    Last permit Aug 2026Licensed

    3 jobs

  8. 8. Properties Of Elegant Distinction LLC

    Last permit Aug 2026Licensed

    3 jobs

Counts are permitted jobs from city building-permit records (2024-10-03 to 2026-10-03). A job that covers several trades counts once in each trade. Permit records do not show all work performed and are not an endorsement. "Licensed" means the company holds a matching Florida DBPR contractor license.