The 33070 Line: Why A Tavernier Canal Home And A Plantation Key Canal Home Aren't The Same Asset

Pull up any portal and search 33070. You will get listings on Gardenia Street in Plantation Key next to listings on Dove Avenue in Key Largo and cottages on Atlantic Circle in Tavernier, all in the same price band, often on similar canals, sometimes closing within a hundred thousand dollars of each other. The median tells you they are comparable. They are not.

The single largest hidden variable in an Upper Keys canal purchase is a municipal boundary that runs invisibly through that zip code. Plantation Key sits inside the Village of Islamorada. Tavernier is unincorporated Monroe County. Two houses a quarter mile apart, on canals of similar depth with similar dockage, live under two different rental regimes, two different license systems, and two different resale buyer pools. If you are buying for lifestyle only, the line is trivia. If income, exit, or optionality matters at all, the line is the deal.

The Rental Rule Is The Price

Start with what the two jurisdictions actually allow, because that is where the value gap begins.

In unincorporated Monroe County, which covers Tavernier and Key Largo, the default minimum stay is 28 days. Shorter rentals are legal only with a Special Vacation Rental Permit, and only if the property sits in one of five eligible land use districts: Suburban Residential, Mixed Use, Urban Residential, Improved Subdivision Vacation Rental, or Offshore Islands. Homes in Improved Subdivision, Urban Residential Mobile Home, or IS-M districts are shut out entirely, per the county's Special Vacation Rental Program. The permit itself runs $490, plus a $110 Special Vacation Rental Manager License, and the manager has to live in the same section of the Keys as the property and be reachable 24/7.

The Village of Islamorada, which includes all of Plantation Key, runs a completely different system. It operates under a grandfathered ordinance predating June 2011, with a hard cap of 331 vacation rental licenses village-wide. Weekly rentals are permitted in eligible zones, but the property has to clear an assessed-valuation floor of 600% of the Monroe County median income for Residential High and Mixed Use districts. Canal-front single-family homes in the Village generally cannot rent under 28 days at all. And the license does not travel with the property. When a licensed vacation rental sells in Islamorada, the license terminates at closing. The new owner applies fresh, from the back of a line that may already be full.

Read those paragraphs again with a buyer's eyes. On the Tavernier side of the line, a qualifying canal home in the right zoning can be permitted for weekly rentals for about $600 in fees, and the permit is renewable. On the Plantation Key side, most single-family canal homes cannot run weekly at all, and the licenses that do exist do not transfer. The portal median has no way to show you which side of that math you are on.

What This Does To Comparable Listings

Consider what the current Upper Keys market actually looks like as of July 2026. Plantation Key inventory is clustered roughly between $1.0M and $2.05M for two- to four-bedroom homes on or near canals: 132 Gardenia at $1.20M, 157 Caloosa at $1.30M, 234 Mohawk at $1.68M, 214 Pueblo at $1.95M. A 3-bed on Plantation Avenue closed at $1.48M on July 1, 2026. Cross into Tavernier proper or the Key Largo end of 33070 and you find comparable footprints in the same range.

The homes look like peers. The income potential does not.

A canal home in Tavernier that sits in one of the eligible county land use districts can pencil out with weekly rental income at Monroe County's 12.5% combined tax load, which is 7.5% Florida state sales tax plus a 5% Monroe County Tourist Development Tax on any rental of six months or less. A canal home on Plantation Key with an identical layout, unless it is in a narrow slice of eligible zoning and the buyer can acquire one of the 331 licenses, is a 28-day-minimum property. That is a longer-stay, lower-turn, snowbird-and-project-worker market with a different revenue curve.

The reasonable buyer response is not "avoid Plantation Key." Plantation Key homes carry other value drivers, including proximity to the Village amenities, the ocean-side lots at higher elevation, and communities like Plantation Key Colony with a private boat ramp and quick Tavernier Creek access to both the Atlantic and Florida Bay. The point is that when a Plantation Key list price sits at parity with a Tavernier list price, the two houses are not the same asset, and the pricing should reflect it. Sometimes it does. Often it does not, and that is where a well-briefed buyer or a well-priced seller finds the edge.

The Condo Wrinkle

Condominiums complicate the picture in a way owner-occupier buyers rarely think about until they try to model income.

Inside the Village of Islamorada, eligibility depends on the annually reset assessed-value threshold. Futura Yacht Club on Plantation Key is the cleanest example: the townhouses can qualify for weekly rental, while the "flat" units typically do not clear the valuation floor and drop back to 28-day-minimum. Two units in the same complex, same marina, same pool, different rental futures.

In unincorporated Monroe County, Ocean Pointe in Tavernier has historically operated with nightly rentals, which is a category exception most buyers never realize exists in the Upper Keys. It works because the underlying land use and the original condominium approval permit it. A buyer shopping "Upper Keys condo with rental income" who never asks which jurisdiction the building sits in, and which class of unit qualifies, is shopping blind.

The Friction That Only Surfaces At Closing

Three transaction points regularly catch out-of-market buyers.

• License non-transferability in Islamorada. If a Plantation Key listing is marketed as an active vacation rental, the license expires at the sale. The value is in the property's eligibility to be re-licensed, not in the paper the seller holds. A listing agent who conflates the two is either uninformed or hoping the buyer is.
• Zoning verification in the county. A Tavernier canal home listed as "STR-eligible" is only eligible if its actual land use district is one of the five permitted categories. The Monroe County Property Appraiser's record card, not the listing sheet, is the document that settles it.
• Tax collection gaps. Booking platforms remit Florida state sales tax on hosts' behalf but generally do not remit the 5% Monroe County Tourist Development Tax. Owners are responsible for the county piece directly, and the county audits against platform data. Inherited liabilities on a property with a sloppy prior operator are a real closing-table conversation.

None of this is exotic. It is the standard due-diligence loop for any Upper Keys income property. It is also the loop that gets skipped when a buyer falls in love with a canal view on a Sunday afternoon.

How To Read A 33070 Search

The practical read for a buyer comparing across the boundary:

1. Confirm the municipality before you tour. Plantation Key addresses read "Islamorada" on the Village's rolls even when the mailing address is Tavernier or Plantation Key.
2. If income matters, pull the land use district from the county appraiser's record card, then match it against the eligible list.
3. In Islamorada, ask the listing side for the current license count against the 331 cap and the wait-list posture. Assume the license does not convey.
4. In Monroe County, budget the Special Vacation Rental Permit and Manager License fees, and identify a compliant on-island manager before you write an offer contingent on rental use.
5. Price the 28-day floor into any pro forma where weekly is not available. It is a different asset class, not a lower-yield version of the same one.

For a broader look at how canal geometry, bridge clearance, and depth affect resale, our Florida Keys canals and dockage guide covers the water side of the same buying decision.

FAQ

Does the 33070 zip mean my property is in Tavernier? No. The 33070 zip covers portions of Plantation Key that fall under the Village of Islamorada, plus unincorporated Tavernier and slices of southern Key Largo. Municipality, not zip, is what controls rental rules.

Can I buy an Islamorada vacation rental license separately from a house? No. Licenses in the Village are tied to specific properties, capped at 331 total, and terminate at sale. A new owner applies fresh.

Are Plantation Key homes worth less because of the tighter rental rules? Not categorically. The Village's regulatory posture also protects residential character, which supports owner-occupier demand and long-term appreciation on higher-end waterfront. The question is whether the price on any given listing accurately reflects that trade.

What if I only plan to rent seasonally, three to six months? Both sides of the line accommodate longer stays without a special vacation rental permit. The 12.5% bed tax applies to any rental of six months or less, so a five-month lease is still a taxed lodging transaction.

The 33070 boundary is the kind of local mechanic that decides real dollars at closing and again at resale. If you are weighing a specific Tavernier or Plantation Key property and want a candid read on how the rental rules, valuation floor, and license posture will shape your basis and your exit, Kelsey Caputo-Frins can walk the parcel with you and pull the appraiser and Village records before you write the offer. Request a Valuation & Design Consult to start the conversation.