Buying a Short-Term Rental in Key Largo, FL
This site's Florida Keys hub page already makes the single most important structural point for any rental-investment buyer in Monroe County: short-term rental rules are not chain-wide. Each of the five incorporated Keys municipalities -- Key West, Marathon, Islamorada, Key Colony Beach, and Layton -- sets its own ordinance. Key Largo is different from all five in a way that genuinely matters for a rental buyer: it is unincorporated. There is no Key Largo city hall, no city council, and no municipal vacation-rental licensing office of its own. Whatever governs short-term rentals here comes directly from Monroe County government, the same authority that runs the county-wide ROGO/NROGO permitting framework covered at the hub level. That is a structurally different starting point than Key West's capped, license-based transient rental system or Marathon's own licensing system and its live council debate over rental fee levels -- Key Largo has no equivalent municipal system to debate in the first place. This page lays out what that structural difference actually means, is explicit about the specific rules and figures this research could not verify, and covers the genuine, qualitative demand driver behind renting here: proximity to John Pennekamp Coral Reef State Park, the wreck-diving fleet, and the still-operating African Queen.
Key Largo Has No Municipal Rental System -- Monroe County Governs Directly
Key West, Marathon, and Islamorada are each incorporated municipalities, which is why each can run its own vacation-rental licensing system on top of Florida's statewide floor under Section 509.032(7)(b) -- the 2011 law that keeps any Florida local government from banning vacation rentals outright while still leaving room for local registration, licensing, and operational rules. Key Largo is not incorporated. It is an unincorporated community within Monroe County, with no city council, mayor, or municipal building department of its own. That means there is no separate 'City of Key Largo' rental ordinance to look up -- land use, zoning, and short-term rental regulation here fall directly under Monroe County's own county-wide rules, the same authority that administers ROGO/NROGO permitting and the Tier System across unincorporated Keys land.
This page will not invent Monroe County's current short-term rental license categories, any parcel- or zoning-based restriction on where a rental can legally operate in Key Largo, a licensing cap, or a specific fee or occupancy-tax figure -- none of those specifics were confirmed for this research pass, and stating them without a direct, current read of the county's own ordinance text would be worse than disclosing the gap. Go directly to Monroe County's current short-term rental ordinance and permitting pages (monroecounty-fl.gov) and the county's licensing office for the current, address-specific answer on what a given Key Largo property needs, whether it already holds any required license, and whether Tier System or ROGO-related zoning affects it.
Why That's a Different Story Than Key West's Cap or Marathon's Fee Debate
It's worth being explicit about what makes Key Largo's situation genuinely different rather than just another variation on the same theme. Key West runs a numerically capped, license-based transient rental system -- a fixed pool of licenses that can trade in value because scarcity is baked into the structure. Marathon runs its own licensing system and, as of recent Keys Weekly coverage, its city council is actively debating whether to raise vacation-rental fee levels within that existing system. Both of those are stories about a municipal government adjusting a system it already owns. Key Largo has no such system to adjust, no council debate over its own fee schedule, and no citywide cap to buy into or wait out -- because there is no Key Largo city government to hold that debate.
That does not mean Key Largo rentals are unregulated. It means the regulator is Monroe County itself, operating county-wide rules that also apply to other unincorporated Keys communities, rather than a Key Largo-specific ordinance. A buyer comparing a Key West license purchase, a Marathon fee-schedule question, and a Key Largo purchase should treat these as three structurally different due-diligence paths, not three versions of the same city-hall phone call. For Key Largo specifically, that phone call goes to Monroe County directly.
Why Key Largo Draws Rental Demand: The Reef, the Wrecks, and the African Queen
Whatever the current licensing specifics turn out to be, Key Largo's underlying appeal as a rental market rests on a genuinely distinctive set of attractions. John Pennekamp Coral Reef State Park, widely and consistently described across state-park and news sources as the first underwater park in the United States, anchors a marketing identity -- 'Dive Capital of the World' -- that is in current, wide commercial use by numerous local dive shops and tourism sites. That identity is backed by real, concrete draws rather than a single official title: the submerged Christ of the Abyss statue near Key Largo Dry Rocks, and a deliberately-sunk wreck-diving fleet that includes the Spiegel Grove (sunk in 2002 and reported by multiple outlets as the world's third-largest intentionally-sunk ship) along with the USCGC Duane and USCGC Bibb, both still actively dived today.
Separately, the real African Queen boat -- used in the 1951 Bogart/Hepburn film of the same name -- was brought to the Florida Keys, restored, and is based in Key Largo today, with a currently operating tour business offering bookable trips. Worth a direct correction while on the subject of film history: the 1948 Bogart/Bacall film actually titled 'Key Largo' was shot on Warner Bros. soundstages in Hollywood, not on location here, despite being referenced uncritically by several current tourism sites -- treat that connection as branding heritage, not filming history. Together, the reef, the wreck fleet, and the African Queen give Key Largo a visitor identity distinct from Key West's nightlife-and-cruise-ship draw and Islamorada's sport-fishing branding: a dive- and reef-tourism audience that is a genuine, qualitative demand driver. This page does not state an occupancy rate, average daily rate, or any specific rental-income figure for Key Largo -- no platform-level rental-performance data (AirDNA, Rabbu, AirROI, or similar) was gathered for this page. These attractions support a qualitative case for demand; they are not a substitute for pulling current occupancy and rate data from a rental-performance platform or a local property manager before underwriting a specific property's rental income.
Taxes and HOA Restrictions Layer on Top of Whatever Monroe County Requires
Regardless of Key Largo's unincorporated status, a handful of statewide and county-level tax obligations apply to any legal short-term rental here the same way they do elsewhere in the Keys: a Florida Department of Business and Professional Regulation (DBPR) transient public lodging license, Florida's 6% state sales tax on rental income, and Monroe County's Tourist Development Tax (bed tax) on stays under six months, collected through the Monroe County Tax Collector. This page did not independently confirm the exact current combined Monroe County bed tax rate, and it did not confirm any current occupancy-tax figure specific to unincorporated areas versus incorporated municipalities -- confirm the current rate directly with the Monroe County Tax Collector before building a rental pro forma.
A property's condominium or homeowners' association -- and this matters in Key Largo, where communities range from canal-front subdivisions to Ocean Reef Club's ultra-exclusive private setting at the island's north end -- can independently restrict or ban short-term rentals through its own recorded declaration, entirely separate from whatever Monroe County allows. This research did not catalog any specific Key Largo building's or community's declaration language. Pull the specific property's governing documents, if any apply, before assuming rental potential from a listing or a verbal assurance.
What This Page Confirmed, What It Didn't, and What That Means for a Buyer
Confirmed: Key Largo is unincorporated, with no city hall, city council, or municipal building department of its own, meaning short-term rental regulation here runs directly through Monroe County rather than a Key Largo-specific ordinance -- a structurally different starting point than Key West's capped-license system or Marathon's own licensing system and council fee debate; John Pennekamp Coral Reef State Park, the Christ of the Abyss statue, and the Spiegel Grove/Duane/Bibb wreck fleet are real, concrete attractions behind the widely-used 'Dive Capital of the World' identity; and the real African Queen boat is currently based in Key Largo and operating bookable tours.
Not resolved, and not something this page will invent: Monroe County's current short-term rental license categories, application steps, any licensing cap, or zoning restriction that applies to a specific Key Largo parcel; any specific rental license fee or occupancy-tax figure; and any occupancy, rate, or rental-income figures for Key Largo. Before writing an offer with short-term rental income in the plan, get the specific property's current, legal short-term rental status and any applicable licensing requirement confirmed in writing by Monroe County's licensing and building offices, confirm ROGO/Tier System status for the parcel if new construction or a rebuild is part of the plan, confirm the current bed tax rate with the Monroe County Tax Collector, pull any condo or HOA declaration that applies, and have a Florida real estate attorney experienced in Monroe County/Keys -- ideally unincorporated Key Largo-specific -- transactions, along with a CPA, review the numbers before you buy. Nothing on this page is legal, tax, or investment advice.
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Get a Free Agent Referral →Independent research. No ads. No sponsored listings. This page covers only Key Largo-specific vacation-rental-investment content; chain-wide Florida Keys facts -- the five-municipality patchwork, county-wide ROGO/NROGO, and the point that STR rules vary by jurisdiction -- are covered on this site's Florida Keys hub page and not repeated here. Data sourced from: Florida Statute Section 509.032(7)(b) (the 2011 statewide short-term-rental preemption law), consistent with this site's other Florida Keys pages; Monroe County's own site (monroecounty-fl.gov) as the authoritative source for unincorporated-area permitting, the Tier System, and short-term rental rules that apply directly to Key Largo; Wikipedia's "Key Largo, Florida" entry and the Key Largo Chamber of Commerce's "Local Government" page on Key Largo's unincorporated status; NPR and Florida State Parks on John Pennekamp Coral Reef State Park's history as the first underwater park in the US; Atlas Obscura and Wikipedia on the Christ of the Abyss statue; Fox Weather, Fox13 Tampa Bay, NBC News, and Keys Weekly on the Spiegel Grove, USCGC Duane, and USCGC Bibb wreck-diving sites; Wikipedia's "African Queen (boat)" entry, NBC News, Florida Rambler, and africanqueenflkeys.com's active booking page on the African Queen's current operation in Key Largo; and Wikipedia's "Key Largo (film)" entry on the 1948 film's Hollywood soundstage filming. Honest gaps disclosed rather than filled with invented figures: this research did not confirm, through a direct current read of Monroe County's own ordinance text, current short-term rental license categories, application steps, any licensing cap, or zoning restrictions specific to a Key Largo parcel; it did not confirm any specific rental license fee or occupancy-tax figure; it did not confirm the exact current combined Monroe County bed tax rate; and it did not confirm any occupancy, average-daily-rate, or rental-income figures for Key Largo (no AirDNA, Rabbu, AirROI, or similar platform data was gathered). Confirm current short-term rental rules directly with Monroe County's licensing and building offices, ROGO/Tier System status with the county's planning department, current bed tax rates with the Monroe County Tax Collector, and consult a Florida real estate attorney experienced in Monroe County/Keys -- ideally unincorporated Key Largo-specific -- transactions, along with a CPA and a local property manager, before purchasing a property in Key Largo for rental income. Nothing on this page is legal, tax, investment, or real estate advice.