# 100 Ave I, Marathon, FL 33050

> **TL;DR:** land, $455,000, built 1987.
> Waterfront. Est. $2,431/mo. Listed 692 days.

## Property at a Glance

| Attribute | Value |
|-----------|-------|
| Price | $455,000 |
| Year Built | 1987 |
| Property Type | Land (Other) |
| Status | For Sale |
| Days on Market | 692 |

## Why This Home Stands Out

- **Waterfront** - Direct water access

## Estimated Monthly Costs

| Category | Amount |
|----------|--------|
| Mortgage (20% down, 6.5%) | $1,972 |
| HOA | $459 |
| **Total** | **$2,431** |

## Key Amenities

- Waterfront

## Property Highlights

- Built in 1987
- Waterfront

## Description

### Agent Description
Discover a rare opportunity to own an oversized boat slip with live-aboard approval in the desirable Cocoplum neighborhood of Marathon. Offering an impressive 22' width, 80' length, and 6' draft, this slip easily accommodates larger vessels, and a recently removed piling maximizes your available space. Nestled on the ocean side, you'll enjoy direct, fast, no-bridge access to the open water, perfect for avid boaters and anglers. Positioned at the end of the marina in a secure, gated section, the slip offers added privacy and quicker navigation straight to the ocean. A spacious Tiki hut extends your living area onto land, creating an inviting space for relaxing, entertaining, and embracing the island lifestyle. Stylish faux-wall panels on each side provide privacy while still capturing refreshing tropical breezes. It's a versatile, blank canvas ready for your personal touch. The marina features a community pavilion, bath house, and laundry facility, and this slip includes multiple storage units for all your gear and equipment. With a strong monthly rental potential and an unbeatable location, large slips with dedicated land-living amenities like this are truly hard to find. Don't miss the chance to experience this exceptional boat slip in paradise. Your ideal Keys retreat awaits!

## Location

- **Address:** 100 Ave I, Marathon, FL 33050
- **County:** Monroe
- **Neighborhood:** Maries Yacht Harbor (54.5)
- **Coordinates:** 24.732399, -81.004673
- **Google Maps:** https://www.google.com/maps?q=24.732399,-81.004673

## Listing Agent

- **Name:** Donna L. Halstead
- **Brokerage:** Coldwell Banker Schmitt RE Co.
- **Phone:** 3056808148
- **Email:** donnah@cbschmitt.com

## Primary Photo

![100 Ave I - Primary Photo](http://lh.rdcpix.com/97f0d1b17e0503a879533715e49d0374l-f2161728320r.jpg)

*14 total photos available on [listing page](https://www.propertysimple.com/listing/100-ave-i-marathon-fl-33050-l610716)*

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**MLS#:** 610716 | **Updated:** 2026-06-17
**Source:** listhub

*Copyright © 2026 Marathon and Lower Keys Association of Realtors. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.*

[View on PropertySimple](https://www.propertysimple.com/listing/100-ave-i-marathon-fl-33050-l610716)

---

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