$29,500,000
Original price: $33,500,000
10 Beds
12 Baths
10,000 sqft (on 3.07 acres)
57783 Morton St, Grassy Key, FL 33050
Est. Mortgage $175,663/mo*
Get Pre-QualifiedHome Highlights
Single-Family Home
Built in 2022
3.07 acre lot
$2,950/sqft
Garage
Local Information
- Map ViewExplore the area around 57783 Morton St.
- Schools1 Preschool School1 Elementary School1 Middle School1 High School
- Shop & Eat
-- mins to
About this House
Newly Built Gulf-front Sanctuary with Panoramic Views, Guest and Pool Houses, Luxe Outdoor Living, and a Deepwater Navigable Dock.
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.
Though private and serene, the estate remains close to everything that defines Keys living. Dining, marinas, and shopping are less than ten minutes away, and the Florida Keys Marathon International Airport lies 4 miles+/- from the property for seamless private aviation access. Deepwater routes, snorkeling coves, and renowned fishing grounds are just moments from the protected 100' dock.
The architecture emphasizes clarity, durability, and immersion in water and light. Walls of impact glass capture views of the Gulf, the bay, and the property's own tidal ponds, allowing natural light to animate the interiors throughout the day. Generous room proportions, ceiling heights of 10' to 12', and open circulation reinforce a sense of airiness and connection.
Every finish, from porcelain flooring to quartzite counters and exterior of shell-stone, was selected for both resilience and refined coastal style. Smart home systems, solar power with battery backup, and integrated storm protection underscore a commitment to performance and longevity.
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.
Though private and serene, the estate remains close to everything that defines Keys living. Dining, marinas, and shopping are less than ten minutes away, and the Florida Keys Marathon International Airport lies 4 miles+/- from the property for seamless private aviation access. Deepwater routes, snorkeling coves, and renowned fishing grounds are just moments from the protected 100' dock.
The architecture emphasizes clarity, durability, and immersion in water and light. Walls of impact glass capture views of the Gulf, the bay, and the property's own tidal ponds, allowing natural light to animate the interiors throughout the day. Generous room proportions, ceiling heights of 10' to 12', and open circulation reinforce a sense of airiness and connection.
Every finish, from porcelain flooring to quartzite counters and exterior of shell-stone, was selected for both resilience and refined coastal style. Smart home systems, solar power with battery backup, and integrated storm protection underscore a commitment to performance and longevity.
Home Details for 57783 Morton St
|
|---|
Interior Details Number of Rooms: 16Types of Rooms: Bedroom 1, Bedroom 2, Bedroom 3, Bedroom 4, Full Bathroom, Half Bathroom, Living Room, Other Room |
Beds & Baths Number of Bedrooms: 10Number of Bathrooms: 13Number of Bathrooms (full): 11Number of Bathrooms (half): 2 |
Dimensions and Layout Living Area: 10000 Square Feet |
Appliances & Utilities Appliances: Washer, Dryer, Refrigerator, Oven, Microwave, Freezer, Ice Maker, Stainless Steel Appliance(s)DryerLaundry: Laundry RoomMicrowaveRefrigeratorWasher |
Heating & Cooling Heating: Has Heating Unspecified TypeHas CoolingAir Conditioning: Central Air,Ceiling Fans(s)Has HeatingHeating Fuel: Has Heating Unspecified Type |
Levels, Entrance, & Accessibility Elevator |
View No View |
|
|---|
Exterior Home Features Patio / Porch: Open Porch/Balcony, Deck, Patio, Screened PatioOther Structures: Guest HouseExterior: Built-in Barbecue, Outdoor Shower, Sandy BeachHas a Private Pool |
Parking & Garage Has a GarageNo Attached GarageParking: Garage |
Pool Pool: In GroundPool |
Frontage WaterfrontOn Waterfront |
|
|---|
Days on Market: 122 |
|
|---|
Year Built Year Built: 2022 |
Property Type / Style Property Type: ResidentialProperty Subtype: Single Family Residence |
Building Construction Materials: StuccoIs a New Construction |
Property Information Condition: New ConstructionParcel Number: 00375000000000 |
|
|---|
Price List Price: $29,500,000Price Per Sqft: $2,950 |
|
|---|
MLS Status: Active |
|
|---|
Direction & Address City: MarathonCommunity: Crains Sub (58.0) |
|
|---|
Listing Agent Listing ID: 619972 |
|
|---|
Building Area Building Area: 10000 Square Feet |
|
|---|
Not Senior Community |
|
|---|
HOA Fee Includes: NoneNo HOAHOA Fee: No HOA Fee |
|
|---|
Lot Area: 3.07 Acres |
|
|---|
Mls Number: 619972 |
Around this home
What Locals Say about Marathon
At least 61 Trulia users voted on each feature.
83 % Say car is needed
79 % Say people would walk alone at night
76 % Say parking is easy
72 % Say it's quiet
70 % Say it's dog friendly
70 % Say yards are well-kept
68 % Say there's holiday spirit
61 % Say it's walkable to restaurants
53 % Say there's wildlife
53 % Say they plan to stay for at least 5 years
51 % Say there are community events
49 % Say kids play outside
45 % Say neighbors are friendly
37 % Say it's walkable to grocery stores
36 % Say there are sidewalks
29 % Say streets are well-lit
Sourced by Trulia users. Learn more about our methodology.
Market trends in Marathon
Last updated August 2026
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
255
7MoM
Home Value
Trulia Estimate
$28.3MSince last month
Decreased$65K (-0.2%)Since last year
Increased$24M (+651.2%)Since last sale
Increased$27M (+1,677.3%)Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.
Trulia Estimate
The of this home's value increased by +2,738% in the last 10 years
| Month | Estimated value |
|---|---|
2026 | |
| September 2026 | $28.26M |
| August 2026 | $28.32M |
| March 2026 | $30.08M |
2025 | |
2024 | |
2023 | |
2022 | |
2021 | |
2020 | |
2019 | |
2018 | |
2017 | |
2016 | |
Comparable sales
These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.03 | Single-Family Home | $3,550,000 | 12/05/25 | 6 | 6 | 5,757 | |
0.45 | Single-Family Home | $3,800,000 | 06/08/26 | 3 | 4.5 | 4,000 | |
0.58 | Single-Family Home | $5,200,000 | 09/04/26 | 4 | 4.5 | 5,168 | |
0.34 | Single-Family Home | $2,700,000 | 05/29/26 | 4 | 2.5 | 1,464 | |
0.57 | Single-Family Home | $1,700,000 | 09/01/26 | 3 | 3 | 1,896 | |
0.32 | Single-Family Home | $550,000 | 06/17/26 | 3 | 2 | 1,056 | |
0.99 | Single-Family Home | $2,200,000 | 12/17/25 | 4 | 4.5 | 2,433 | |
0.39 | Single-Family Home | $580,000 | 05/20/26 | 3 | 2 | 1,147 | |
0.41 | Single-Family Home | $525,000 | 12/17/25 | 3 | 1 | 912 |
Nearby home prices
Get a sense of expected prices in the area by checking the value of nearby homes.Address | Distance | Price | Bed | Bath | Sqft | Status |
|---|---|---|---|---|---|---|
0.03 | $3,550,000 | 6 | 6 | 5,757 | Recently Sold | |
0.03 | $14,995,000 | 11 | 8.5 | 8,515 | For Sale | |
0.15 | $599,400 | 2 | 2 | 960 | Off Market | |
0.14 | $15,900 | - | - | - | Recently Sold | |
0.24 | $576,500 | 2 | 2 | 864 | Off Market | |
0.22 | - | - | - | - | Off Market | |
0.22 | - | - | - | - | Off Market | |
0.22 | - | - | - | - | Off Market | |
0.28 | $623,400 | 2 | 2 | 864 | Off Market | |
0.28 | - | - | - | - | Off Market | |
0.28 | - | - | - | - | Off Market |
Price and Tax history
| Date | Event | Price |
|---|---|---|
Apr 30, 2026 Source: MIAMI #A11977067 | PriceChange | $29,500,000 Price decreased by 12% |
Mar 5, 2026 Source: MIAMI #A11977067 | Listed For Sale | $33,500,000 |
Jan 23, 2026 Source: MIAMI #A11925907 | ListingRemoved | $33,500,000 |
Dec 5, 2025 Source: MIAMI #A11925907 | Listed For Sale | $33,500,000 |
Nov 1, 2018 Source: FLKMLS #577677 | Sold | $1,590,000 |
May 24, 2018 Source: Agent Provided | PriceChange | $1,599,000 Price decreased by 3% |
Apr 26, 2018 Source: Agent Provided | PriceChange | $1,649,000 Price decreased by 3% |
Dec 1, 2017 Source: Agent Provided | Listed For Sale | $1,699,000 |
Nov 1, 2017 Source: N/A | ListingRemoved | $1,750,000 |
May 2, 2017 Source: N/A | Listed For Sale | $1,750,000 |
| Year | Property tax | Tax assessment |
|---|---|---|
| 2025 | $33,508 | $5,549,027 |
Home facts updated by county records
LGBTQ Local Legal Protections
LGBTQ Local Legal Protections
Brett Harris PA, Bespoke Real Estate
Agent Phone: (305) 800-9030
MLS Internet Data Exchange (IDX) information is provided exclusively for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing, and that the data is deemed reliable but is not guaranteed accurate by the Florida Keys MLS.
Similar Homes You May Like
NEW CONSTRUCTION1.88 ACRESOcean Sotheby's International Realty
2.82 ACRESColdwell Banker Schmitt Real Estate Co
See more homes for sale inGrassy Key
New Listings near 57783 Morton St
- NEW CONSTRUCTION1.88 ACRESOcean Sotheby's International Realty
NEW CONSTRUCTION1.72 ACRESThe Keyes Company- 2.82 ACRESColdwell Banker Schmitt Real Estate Co
0.86 ACRESColdwell Banker Schmitt Real Estate Co.- See more homes for sale inGrassy Key
Frequently asked questions about 57783 Morton St
- What is the estimated monthly payment for 57783 Morton St?Based on a $29,500,000 list price with 20% down at today's rates, the estimated monthly payment for 57783 Morton St in Grassy Key, FL is approximately $180,555 (about $160,322 principal & interest, $20,158 property taxes, and $75 homeowner's insurance). This is an estimate. Actual payment depends on your loan terms.
- What do residents say about Grassy Key?Residents describe Grassy Key, FL as easy to park in, quiet, and dog-friendly. Most residents say you need a car. See homes for sale in Grassy Key, FL.
- What are the closest schools to 57783 Morton St?The closest schools to 57783 Morton St in Grassy Key, FL are Marathon School (Middle/High, rated 5/10), Stanley Switlik Elementary School (Pre-K, rated 5/10).
- What is 57783 Morton St estimated to be worth?Trulia's estimated value for 57783 Morton St in Grassy Key, FL is $28,323,500.
- Does 57783 Morton St have air conditioning?Yes, 57783 Morton St in Grassy Key, FL has air conditioning.
- Does 57783 Morton St have a pool?Yes, 57783 Morton St in Grassy Key, FL has a pool.
57783 Morton St, Grassy Key, FL 33050 is a 10 bedroom, 13 bathroom, 10,000 sqft single-family home built in 2022. This property is currently available for sale and was listed by FLKMLS on May 20, 2026. The MLS # for this home is MLS# 619972.