10881 7th Avenue Gulf, Marathon, FL 33050

$1,200,000

Virtual Tour

https://tours.keyspropertyvisuals.com/cvtnb/366230

Virtual Tour

https://tours.keyspropertyvisuals.com/cvtnb/366230

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Property Type: Residential Bedrooms: 4 Baths: 4 Square Footage: 1,888 Lot Size (sq. ft.): 9,613 Status: Active

Current Price: $1,200,000 List Date: 10/08/2026 Last Modified: 10/09/2026

Overview

Description

Duplex opportunity in the heart of Marathon with two legal addresses: 10881 7th Avenue Gulf and 10883 7th Avenue Gulf. This updated DUPLEX offers excellent flexibility for investors, owner occupants, or those looking to live in one unit and rent the other. The first floor residence features 3 bedrooms, 2.5 baths, a private entrance, its own patio area, separate laundry, and separate electric and water meters. It is currently rented for $3,700/month on a month to month basis, with the tenant open to a one year lease. The second floor unit offers 1 bedroom, 1 bath, its own private staircase and entrance, a dedicated outdoor sitting area, separate laundry, and separate utility meters. The upstairs unit is currently vacant and was most recently rented for $3,000/month, providing demonstrated combined rental potential of approximately $6,700/month or $80,400 annually. The property has been renovated and updated and offers exceptional parking for 5+ vehicles, with ample room for cars, bo ... (Read more)

Listing Details MLS# 621548

Location, Tax & Legal

Street #: 10881
Street Name: 7th Avenue Gulf
Key/Island: Marathon
State/Province: FL
Zip Code: 33050
County: Monroe
Subdivision: Key Colony Sub (53.0)
Area: 15 - Sombrero Bch Rd to Vaca Cut Gulfside
City: MARATHON
Off Shore Island: No
Mile Marker: 53
Marathon Neighborhood: Marathon East - Gulf (Airport to Vaca)
Senior Community YN: No
Side: Bay/Gulf
Alternate Key #: 1412830
Add'l Parcel #1: 00335170-000100
Parcel #: 00335170-0000000
Zoning: RM - Residential Medium
Deed Restrictions: Unknown
Legal: BK 3 LT 6 LESS THE NORTH 34.85 FT OF THE EAST 35 FT & LESS SECOND FLOOR UNIT KEY COLONY SUBD 4 PB4-23 KEY VACA
Taxes: 6356.06
Tax Year: 2025
Pub Sewer HkUp: Yes

Contract Information

Listing Board: Marathon/Lower Keys
As is Rght to Inspct: Yes
Potential Short Sale: No
Bank Owned: No
Species List: No

General Property Description

Realtor.COM Type: Multi-family
Style: Duplex
Waterfront: No
Pool: No
Year Built: 1973
Total Units: 2
Lot SqFt: 9613
Lot Sqft Source: Property Data Card
Acres: 0.22
Living Apx SqFt: 1888
SqFt Source: Property Data Card
Total Bedrooms: 4
Full Baths: 3
Half Baths: Yes
Total Baths: 4
Rentals Allowed: With Restrictions
Min Rental Days: 7
Control Depth: 0

Association Info

Mandatory Home Owners Asc: No
1st Right of Refusal: No
Association Fee $: 0

Building Style

Above Flood: Unknown

More Information

Vehicle Storage

Car(s): 4+
Off Street Parking: Yes
Trailer Storage: Yes

Financial Status

Auction: No
Bank Owned: No
Potential Short Sale: No
Standard Sale: Yes

Remarks & Misc

Remarks – Consumer: Duplex opportunity in the heart of Marathon with two legal addresses: 10881 7th Avenue Gulf and 10883 7th Avenue Gulf. This updated DUPLEX offers excellent flexibility for investors, owner occupants, or those looking to live in one unit and rent the other. The first floor residence features 3 bedrooms, 2.5 baths, a private entrance, its own patio area, separate laundry, and separate electric and water meters. It is currently rented for $3,700/month on a month to month basis, with the tenant open to a one year lease. The second floor unit offers 1 bedroom, 1 bath, its own private staircase and entrance, a dedicated outdoor sitting area, separate laundry, and separate utility meters. The upstairs unit is currently vacant and was most recently rented for $3,000/month, providing demonstrated combined rental potential of approximately $6,700/month or $80,400 annually. The property has been renovated and updated and offers exceptional parking for 5+ vehicles, with ample room for cars, boats, trailers and more. Adding even more value, approved plans convey with the sale for a substantial two-story garage and storage building at the rear of the property. The approved design includes approximately 2,768 sq. ft. of enclosed space, with a 1,440 sq. ft. shared garage on the first floor and additional dedicated and shared storage areas, two bathrooms, and mechanical space upstairs. A rare opportunity to combine strong rental income, separate living spaces, extensive parking, and future garage/storage potential, all offered at $1,200,000.
Directions: From US-1, turn onto 107th Street Gulf. Continue toward the Gulf, then turn onto 7th Avenue Gulf. Property is located at 10881 & 10883 7th Avenue Gulf.

Fee Includes

None: Yes

Dockage

None: Yes

Tax Exemptions

None: Yes

Appliances

Dishwasher: Yes
Dryer: Yes
Freezer: Yes
Microwave: Yes
Oven: Yes
Range: Yes
Refrigerator: Yes
Washer: Yes

Pets

Pets Allowed: Yes

Cooling

Central Air: Yes

Waterfront

None: Yes

Waterview

Open Water View: Yes

Floor

Vinyl: Yes

Interior Features

Built-in Cabinets: Yes
Storage: Yes
Walk-in Closet(s): Yes

Property Condition

Updated/Remodeled: Yes

Construction

CBS: Yes

Land Size

Less Than 1/4 Acre: Yes

Furnished

Unfurnished: Yes

Utilities

Buyer to Verify: Yes
Cable Available: Yes
Elect Separate Meter: Yes
FKAA: Yes
Municipal Sewer: Yes
Water Separate Meter: Yes

Title

Title Ins - Buyer: Yes

Exterior Features

Storage: Yes

Property Features

Fee Includes: None Tax Exemptions: None Waterfront: None Waterview: Open Water View Dockage: None Property Condition: Updated/Remodeled Vehicle Storage: Off Street Parking; Trailer Storage Furnished: Unfurnished Cooling: Central Air Utilities: Buyer to Verify; Cable Available; Elect Separate Meter; FKAA; Municipal Sewer; Water Separate Meter Interior Features: Built-in Cabinets; Storage; Walk-in Closet(s) Appliances: Dishwasher; Dryer; Freezer; Microwave; Oven; Range; Refrigerator; Washer Exterior Features: Storage Construction: CBS Floor: Vinyl Pets: Pets Allowed Land Size: Less Than 1/4 Acre Title: Title Ins - Buyer

Documents

Survey 10881 & 10883 7th Avenue Gulf MTH ›

Listing Office: Coldwell Banker Schmitt Real Estate Co.

Last Updated: October - 09 - 2026

The data relating to real estate for sale on this web site comes in part from the Florida Keys MLS, Inc. Information provided is deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. The information being provided is for consumers’ personal, non-commeral use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. IDX data is deemed reliable but is not guaranteed accurate by the MLS.

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