New construction

$33,500,000

57783 Morton St, Grassy Key, FL 33050

10beds

8,648sqft

Est.:

Single Family Residence

Built in 2025

3.07 Acres Lot

$-- Zestimate^®

$3,874/sqft

$-- HOA

What's special

A Private Waterfront Estate at The Edge of the Gulf of America. Set on 3 secluded acres+/- along one of the most protected stretches of the Gulf of America, 57783 Morton Street is a newly completed estate of rare scale, privacy, and modern coastal design. Surrounded by water, sandscape, and tidal ponds alive with marine life, the property offers more than 200’+/- of direct water frontage and uninterrupted views across the open Gulf. Completed in 2025 by builder and developer Alderuccio Corporation, this resilient, elevated retreat is constructed entirely of concrete and impact glass and is designed for effortless indoor–outdoor living. With three distinct finished living spaces totaling approximately 10,000 SF+/-, the estate functions as a private resort offering privacy, recreation, and exceptional access to the best of the Florida Keys.

27 days

5,074

166

Tour with a local agent

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 10
Bathrooms: 13
Full bathrooms: 11
1/2 bathrooms: 2

Rooms

Room types: Den/Library/Office, Recreation Room

Heating

Central, Electric, Solar

Cooling

Central Air, Electric, Zoned

Appliances

Included: Ice Maker, Other, Refrigerator
Laundry: Laundry Room

Features

Elevator, Other, Pantry, Separate Guest/In-Law Quarters
Doors: High Impact Doors
Has fireplace: Yes

Interior area

Total structure area: 11,318
Total interior livable area: 8,648 sqft

Video & virtual tour

View virtual tour

Property

Parking

Total spaces: 10
Parking features: Additional Spaces Available, Driveway, Rv/Boat Parking, Garage Apartment
Garage spaces: 10
Has uncovered spaces: Yes

Features

Stories: 2
Entry location: Second Floor Entry
Exterior features: Built-in Barbecue, Lighting, Balcony, Outdoor Shower
Has private pool: Yes
Pool features: Gunite, Heated
Has spa: Yes
Has view: Yes
View description: Bay, Water
Has water view: Yes
Water view: Bay,Water
Waterfront features: Ocean Access, Navigable Water, Seawall, WF/Pool/Ocean Access
Frontage length: 200

Lot

Size: 3.07 Acres
Features: 2 To Less Than 3 Acre Lot

Details

Additional structures: Guest House
Parcel number: 00375000000000
Zoning: SINGLE FAMILY RESID
Other equipment: Other

Construction

Type & style

Home type: SingleFamily
Architectural style: Modern/Contemporary
Property subtype: Single Family Residence

Materials

CBS Construction, Stucco
Foundation: Raised
Roof: Concrete

Condition

New Construction
New construction: Yes
Year built: 2025

Utilities & green energy

Sewer: Public Sewer
Water: Municipal Water

Community & HOA

Community

Features: Fitness Center, None, Exercise Room, No Subdiv/Park Info
Subdivision: Crains Subd

HOA

Has HOA: No

Location

Region: Grassy Key

Financial & listing details

Price per square foot: $3,874/sqft
Tax assessed value: $5,549,027
Annual tax amount: $33,508
Date on market: 3/5/2026
Listing terms: All Cash,Conventional

Estimated market value

Not available

Estimated sales range

Not available

Price history

Date	Event	Price
3/5/2026	Listed for sale	$33,500,000$3,874/sqft
Source: MIAMI #A11977067 Report a problem
1/23/2026	Listing removed	$33,500,000$3,874/sqft
Source: MIAMI #A11925907 Report a problem
12/5/2025	Listed for sale	$33,500,000+2006.9%$3,874/sqft
Source: MIAMI #A11925907 Report a problem
11/1/2018	Sold	$1,590,000-0.6%$184/sqft
Source: FLKMLS #577677 Report a problem
5/24/2018	Price change	$1,599,000-3%$185/sqft
Source: Water Vista Realty LLC #577677 Report a problem
4/26/2018	Price change	$1,649,000-2.9%$191/sqft
Source: Water Vista Realty LLC #577677 Report a problem
12/1/2017	Listed for sale	$1,699,000-2.9%$196/sqft
Source: Water Vista Realty LLC #577677 Report a problem
11/1/2017	Listing removed	$1,750,000$202/sqft
Source: Owner Report a problem
5/2/2017	Listed for sale	$1,750,000$202/sqft
Source: Owner Report a problem

Public tax history

Year	Property taxes	Tax assessment
2025	$33,508 -2.6%	$3,852,382 +2.9%
2024	$34,409 +92.4%	$3,743,812 +100.9%
2023	$17,887 +79%	$1,863,068 +79.2%
2022	$9,994 +8.9%	$1,039,497 +14.7%
2021	$9,179 +2.8%	$906,195 +1.4%
2020	$8,928	$893,684 -26.6%
2019	$8,928 -28.6%	$1,217,976 +30.1%
2018	$12,503 +34.6%	$935,920 +21.2%
2017	$9,292 +12.1%	$772,333 -5%
2016	$8,287 -7.2%	$813,398 -2.1%
2015	$8,926	$830,813