# 521 United Street, Key West, FL 33040

> **TL;DR:** commercial, $20,350,000 ($4250/sqft), built 1938, 4,788 sqft.
> View. Est. $88,183/mo. Listed 636 days.

## Property at a Glance

| Attribute | Value |
|-----------|-------|
| Price | $20,350,000 |
| Price/sqft | $4250 |
| Square Feet | 4,788 |
| Year Built | 1938 |
| Lot Size | 21,780 sqft (0.50 acres) |
| Stories | 3 |
| Property Type | Commercial (Other) |
| Status | For Sale |
| Days on Market | 636 |

## Why This Home Stands Out

- **Views** - Water

## Estimated Monthly Costs

| Category | Amount |
|----------|--------|
| Mortgage (20% down, 6.5%) | $88,183 |
| **Total** | **$88,183** |

## Key Amenities

- View

## Property Highlights

- Built in 1938
- 0.50 acre lot
- 3 stories

## Description

### Agent Description
Located at 521 United Street, the Southernmost Inn was originally built in the 1800s as a Francisco Marrero cigar factory. With much of the old cigar factory features restored, the award-winning transformation allowed the old Key West designs to live on throughout a modern-day establishment. The Southernmost Inn offers 38 newly renovated rooms featuring modern interiors with a classic neo-colonial design. All guestrooms feature en-suite bathrooms, flat screen TVs, and colonial wooden blinds. The Boutique also boasts a gorgeous outdoor common area with lush gardens, two pools, one jacuzzi, a bar (currently closed), and a relaxing dining area.

## Location

- **Address:** 521 United Street, Key West, FL 33040
- **County:** Monroe
- **Neighborhood:** Old Town - Unrecord (1.0)
- **Coordinates:** 24.548987, -81.796508
- **Google Maps:** https://www.google.com/maps?q=24.548987,-81.796508

## Listing Agent

- **Name:** Team Gardner/Langley
- **Brokerage:** Berkshire Hathaway HomeServices Knight & Gardner Realty
- **Phone:** 3059022447
- **Email:** commercial@keysrealestate.com

## Primary Photo

![521 United Street - Primary Photo](http://lh.rdcpix.com/f5e97eeb9dcf7feb42fda2bb700ac94al-f3012905718r.jpg)

*25 total photos available on [listing page](https://www.propertysimple.com/listing/521-united-street-key-west-fl-33040-l611311)*

---

**MLS#:** 611311 | **Updated:** 2026-06-18
**Source:** listhub

*Copyright © 2026 Key West 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/521-united-street-key-west-fl-33040-l611311)

---

## Structured Data

```json
{
  "@context": "https://schema.org",
  "@type": "RealEstateListing",
  "name": "521 United Street, Key West, FL 33040",
  "description": "Located at 521 United Street, the Southernmost Inn was originally built in the 1800s as a Francisco Marrero cigar factory. With much of the old cigar factory features restored, the award-winning transformation allowed the old Key West designs to live on throughout a modern-day establishment. The Southernmost Inn offers 38 newly renovated rooms featuring modern interiors with a classic neo-colonial design. All guestrooms feature en-suite bathrooms, flat screen TVs, and colonial wooden blinds. The",
  "url": "https://www.propertysimple.com/listing/521-united-street-key-west-fl-33040-l611311",
  "image": "http://lh.rdcpix.com/f5e97eeb9dcf7feb42fda2bb700ac94al-f3012905718r.jpg",
  "datePosted": "2026-06-18",
  "price": 20350000,
  "priceCurrency": "USD",
  "address": {
    "@type": "PostalAddress",
    "streetAddress": "521 United Street",
    "addressLocality": "Key West",
    "addressRegion": "FL",
    "postalCode": "33040",
    "addressCountry": "US"
  },
  "geo": {
    "@type": "GeoCoordinates",
    "latitude": 24.548987,
    "longitude": -81.796508
  },
  "floorSize": {
    "@type": "QuantitativeValue",
    "value": 4788,
    "unitCode": "FTK"
  },
  "yearBuilt": 1938
}
```