Florida Keys, Fla. — Private Island Near Sweeney's Mansion Lists

A private island located minutes from Sydney Sweeney's Florida Keys mansion has hit the market, marketed with off-grid living and a private sandy beach, according to a Realtor.com report surfaced through Google News on Oct. 18, 2026.

What does the listing describe?

The report identifies the property as a private island in the Florida Keys, pitched to buyers on two features: an off-grid setup and a sandy beach. The aggregated listing summary does not include a listing price, lot acreage, square footage, or the island's exact name — figures that would normally anchor a real-estate data story but are not present in the available reporting.

How close is it to Sydney Sweeney's mansion?

The only distance figure offered is qualitative: the island sits "minutes" from Sweeney's Florida Keys mansion, per the Realtor.com headline relayed by Google News. No mileage, boat-travel time, or address appears in the sourced material, so the proximity claim should be read as a marketing distance, not a measured one.

What off-grid features are confirmed — and what isn't?

The word "off-grid" appears in the original headline, but the underlying report available here does not break out which systems make the property off-grid — solar arrays, cisterns, generators, or septic fields are common on remote Keys islands, yet none is specifically attributed to this listing in the sourced text. The sandy beach is the one physical amenity named directly.

By the numbers

Two figures anchor what's verifiable today. First: zero — the number of dollar, acreage, or square-footage figures disclosed in the available Realtor.com summary, a gap worth flagging for buyers comparing Keys island listings. Second: two — the number of off-grid-living pieces HTT News's Alternative Amie desk published on Sept. 16, 2026, covering a couple's path from homelessness to building an off-grid dome home and a practical guide to joining a community tool library for self-sufficiency projects. Together they show off-grid living spans from budget-driven dome construction to seven-figure island real estate marketing, without a single standardized cost metric connecting the two ends.

How does this fit the broader off-grid trend?

The island listing and HTT's dome-home report both use "off-grid" as a selling point, but for different audiences and at different price points implied by context rather than stated figures. The dome-home story centers on a couple building self-sufficient housing after homelessness, while the island listing markets off-grid status as a luxury amenity near a celebrity-owned property. Readers comparing the two should note that neither the Realtor.com summary nor HTT's prior coverage publishes a direct cost-per-square-foot or utility-savings figure that would make the comparison numerically precise.

What should a buyer ask before pursuing a listing like this?

Based on the gaps in the available report, prospective buyers would need to request the listing price, acreage, specific power and water infrastructure, and any homeowners' association or conservation restrictions directly from the listing agent, since none of those figures appear in the sourced coverage reviewed for this report.