105 Avenue D

Marathon, FL 33050

$414,000

1Beds

1Baths

—Sq ft

1974Year built

CondoType

About this home

This beautifully updated waterfront condominium captures the essence of the Florida Keys lifestyle along a serene 200-ft-wide deep-water canal with 6+ ft control depth and no bridge clearance restrictions—The residence includes an assigned boat slip accommodating vessels up to approximately 43 ft, providing effortless access to open water. Hurricane-panel-protected sliding glass doors fill the home with natural light and open to a private waterfront balcony, creating seamless indoor-outdoor living for morning coffee or evening relaxation. Inside, modern finishes and a clean coastal design, a turnkey presentation. The property offers flexibility as a primary residence, second home, or income-producing vacation rental. Short-term rentals are permitted with a 7-night minimum. Community amenities include a heated pool, waterfront tiki huts with grilling areas, boat trailer parking, and maintained dockage—perfect for owners and guests. Ideally located in the Middle Keys, the property is minutes from Marathon Airport and about 40 miles from both Key West and Miami via US-1, offering convenient access while preserving a peaceful island setting. Coco Plum Beach is less than a mile away for kayaking, shoreline walks, and unforgettable sunsets. Boat slip fee is $500 annually and has been paid for 2026. Showings accommodated around current bookings; please provide notice when possible. Offered furnished and equipped; a short exclusion list of personal items is available upon request.

Features

Waterfront

Property details

Listing

MLS #: A11975802
Status: For sale
Listed on: Feb 6, 2026
Days on market: 184 days
Listing data updated: Aug 3, 2026

Interior

Beds: 1
Baths: 1
Unit: 113

Building & community

Type: Condo
Year built: 1974
HOA fee: $640/mo
County: Monroe

Lot & exterior

Waterfront: Yes

Days on market, price per ft² and the monthly HOA amount are calculated by this site from the MLS data shown; the association fee is normalized to a monthly figure.

True monthly cost

Mortgage (principal & interest): $2,093
Property taxes (est.): $379
Home insurance (est.): $317
Flood insurance (est.): —
HOA fee: $640

Estimated total$3,429*/mo

* Some cost lines aren't available yet for this listing; the total shown is incomplete.

Based on 20% down, a 6.5% rate and a 30-year loan, plus this home's estimated Florida carrying costs. All figures are illustrative estimates — not quotes, not financial or insurance advice.

Sources: flood zone — FEMA National Flood Hazard Layer; mortgage, taxes and insurance figures — this site's own estimates; HOA / CDD — as reported for this listing.

What will this home really cost you?

Building structural health (SIRS)

No filing record found

We couldn't find a SIRS filing record for this building in Florida's public DBPR database. That is not a red flag by itself: buildings under three stories are exempt, recent or mailed-in filings may not appear yet, and the name or address on file may differ from this listing.

Questions about this

What is a SIRS and why does it matter?

Since the Surfside collapse, Florida requires condo and co-op buildings three stories or taller to complete a Structural Integrity Reserve Study: an inspection-based plan that forces the association to fund structural repairs (roof, load-bearing walls, plumbing, electrical) instead of deferring them. It matters because underfunded buildings are the ones that surprise owners with large special assessments.

Has this building filed its SIRS?

We didn't find a filing record for this building in the DBPR's public database. Absence of a record does not mean the building is out of compliance — it may be exempt (under three stories), the filing may be recent or on paper, or the recorded name/address may differ. It IS the right question to ask before offering.

What is a special assessment?

A one-off charge the association levies on every owner when reserves don't cover a needed repair — in older coastal buildings they have ranged from a few thousand to over $100,000 per unit. The SIRS exists precisely to make these predictable and funded in advance. Always review the building's budget, reserves and meeting minutes before buying.

What should I check before buying in this building?

Florida law gives buyers the right to review the association's SIRS, milestone inspection reports, budget and reserves — the full study is available from the association by written request. Nilyan requests and walks through these documents with her buyers as part of the offer process.

Source: Florida DBPR public SIRS reporting database. Filing status is self-reported by the association; this is not an audit, inspection or safety certification, and absence of a record does not mean non-compliance. Data as of July 30, 2026.

Want the full structural picture of this building before you offer?