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$999,997
317 Tropical Avenue
Marathon, FL 33050
MLS# 620206
4 beds  |  3 baths  |  1740 sqft


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Property Description
Currently in Marathon, Duck Key & Key Colony there is no other New Construction Home available below $1.1M besides this Brand New Under Construction 4 Bed, 3 Bath, 1786 sqft living Concrete Above Flood Home, built by the local well-respected Design Center. It also happens to be located on a Corner Lot that backups to non-buildable protected land offering more privacy in the Grassy Key neighborhood, which has quickly become a highly desired area for many locals. It's a great family neighborhood with a community waterfront Sunset park and only a mile from a boat ramp. This home features poured solid concrete 16x16 columns plus an Energy Efficient Seamless Metal Roof, Hurricane Impact Windows & Doors, Spray Foam Insulation along with a High Efficiency 4 Ton A/C System, & even an Electrical Sub Panel Box prewired for a generator hook up. Pre-Cast Concrete Floors allowing for no center columns, which maximizes usable space in the 2 car garage. Step inside & find Maintenance Free Wide Plank Luxury Vinyl Flooring thru out the home, 8FT High Interior Doors, 9'6'' Ceilings, 5 ¼'' Baseboards, LED Recess Lighting, Modern Fans in each Bedroom & the Living Room, an Open Kitchen with Shaker Soft Close Wood Cabinets with Crown Molding & Hardware including 42'' Uppers, Quartz Countertops including a Large 1 level island, a Tile or Quartz Backsplash, Pendant Lighting, a Full Stainless Steel Appliance Package & Modern Single Sink & Faucet. All 3 bathrooms feature Designer Tiled Floors, Custom Tiled Showers including LED underlighting and lit shower nooks with the Primary & 1 Guest Bath having Frameless Glass Enclosures & the 2nd Guest having a Tub/Shower Combo. They all have Wood Vanities with Quartz Counters, Modern Vanity Lighting & Mirrors, Modern Faucets & Toilets. Home comes with a 1-year Builders Warranty and can be offered Furnished by a local interior designer for an additional cost making it Vacation Rental Ready. ETA for completion is Dec 2026.

Details
Maps
Contract Information
Listing Board: Marathon/Lower Keys
As is Rght to Inspct: No
Current Price: $999,997
Listing Date: 2026-06-01
List Price: $999,997
Location, Tax & Legal
City: MARATHON
Off Shore Island: No
Mile Marker: 57.5
Marathon Neighborhood: Grassy Key
Side: Bay/Gulf
Alternate Key #: 1456101
Parcel #: 00373010000000
Zoning: RM-1 - Residential Medium - 1
Deed Restrictions: No
Legal: Bk 48 Lt 16 Crains Subd Of Grassy Key Pb 1-51 Pt Secs24-25-26 Twp65s R 33E Or154-71 Or1263-388D/C Or1399-1446 Or1866-178
Taxes: 500.07
Tax Year: 2025
Pub Sewer HkUp: Yes
Street #: 317
Street Name: Tropical
Street Suffix: Avenue
Key/Island: Marathon
State/Province: FL
Zip Code: 33050
County: Monroe
Subdivision: Crains Sub (58.0)
Area: 19 - Crawl Key & Grassy Key
General Property Description
Realtor.COM Type: Residential - Single Family
Waterfront: No
Control Depth: 0
Lot Size: 60 X 125
Lot SqFt: 7500
Pool: No
Total Units: 1
Acres: 0.17
SqFt Source: Blue Print
Rentals Allowed: Yes
Min Rental Days: 7
Style: Single Family
Year Built: 2026
Living Apx SqFt: 1740
Total Bedrooms: 4
Full Baths: 3
Total Baths: 3
Remarks & Misc
Remarks – Consumer: Currently in Marathon, Duck Key & Key Colony there is no other New Construction Home available below $1.1M besides this Brand New Under Construction 4 Bed, 3 Bath, 1786 sqft living Concrete Above Flood Home, built by the local well-respected Design Center. It also happens to be located on a Corner Lot that backups to non-buildable protected land offering more privacy in the Grassy Key neighborhood, which has quickly become a highly desired area for many locals. It's a great family neighborhood with a community waterfront Sunset park and only a mile from a boat ramp. This home features poured solid concrete 16x16 columns plus an Energy Efficient Seamless Metal Roof, Hurricane Impact Windows & Doors, Spray Foam Insulation along with a High Efficiency 4 Ton A/C System, & even an Electrical Sub Panel Box prewired for a generator hook up. Pre-Cast Concrete Floors allowing for no center columns, which maximizes usable space in the 2 car garage. Step inside & find Maintenance Free Wide Plank Luxury Vinyl Flooring thru out the home, 8FT High Interior Doors, 9'6'' Ceilings, 5 ¼'' Baseboards, LED Recess Lighting, Modern Fans in each Bedroom & the Living Room, an Open Kitchen with Shaker Soft Close Wood Cabinets with Crown Molding & Hardware including 42'' Uppers, Quartz Countertops including a Large 1 level island, a Tile or Quartz Backsplash, Pendant Lighting, a Full Stainless Steel Appliance Package & Modern Single Sink & Faucet. All 3 bathrooms feature Designer Tiled Floors, Custom Tiled Showers including LED underlighting and lit shower nooks with the Primary & 1 Guest Bath having Frameless Glass Enclosures & the 2nd Guest having a Tub/Shower Combo. They all have Wood Vanities with Quartz Counters, Modern Vanity Lighting & Mirrors, Modern Faucets & Toilets. Home comes with a 1-year Builders Warranty and can be offered Furnished by a local interior designer for an additional cost making it Vacation Rental Ready. ETA for completion is Dec 2026.
Association Info
Mandatory Home Owners Asc: No
1st Right of Refusal: No
Association Fee $: 0
Fee Includes
None: 1
Dockage
None: 1
Tax Exemptions
Homestead: 1
Appliances
Dishwasher: 1
Disposal: 1
Dryer: 1
Microwave: 1
Oven: 1
Range: 1
Refrigerator: 1
Washer: 1
Pets
Pets Allowed: 1
Cooling
Ceiling Fans(s): 1
Central Air: 1
Heating
Central: 1
Waterfront
None: 1
Waterview
No Waterview: 1
Floor
Vinyl: 1
Neighborhood Feature
Other Area Features: 1
Property Condition
New Construction: 1
Building Style
Above Flood: Yes
Stilt Column Height: Medium - 5Ft - 9Ft
Windows/Doors
Impact Rstnce Doors: 1
Impact Rstnce Window: 1
Vehicle Storage
Car(s): 4+
Garage: 1
Attached: 1
Off Street Parking: 1
Construction
CBS: 1
Concrete: 1
Stucco: 1
Land Size
Less Than 1/4 Acre: 1
Furnished
Negotiable: 1
Terms
Cash: 1
Conventional: 1
FHA: 1
Utilities
FKAA: 1
Municipal Sewer: 1
Porch/Balcony
Open Porch/Balcony: 1
Roof
Metal Roof: 1
GF-Interior Features
LED Lighting: 1
Status Change Info
Status: Active
Property Features
Fee Includes: None
Tax Exemptions: Homestead
Waterfront: None
Waterview: No Waterview
Dockage: None
Property Condition: New Construction
Vehicle Storage: Garage; Attached; Off Street Parking
Furnished: Negotiable
Cooling: Ceiling Fans(s); Central Air
Heating: Central
Utilities: FKAA; Municipal Sewer
Appliances: Dishwasher; Disposal; Dryer; Microwave; Oven; Range; Refrigerator; Washer
Construction: CBS; Concrete; Stucco
Floor: Vinyl
Roof: Metal Roof
Pets: Pets Allowed
Neighborhood Feature: Other Area Features
Land Size: Less Than 1/4 Acre
Terms: Cash; Conventional; FHA
GF-Interior Features: LED Lighting

Listing Office: No Nonsense Real Estate Branch Office

Last Updated: June - 08 - 2026

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