Star Island Miami Real Estate Guide

Star Island is a small gated, man-made island in Biscayne Bay connected to the MacArthur Causeway by a single bridge, made up of large waterfront and interior lots. It is one of the highest-priced residential enclaves in the Miami Beach market, though transaction volume is very low, so individual sales set the tone. Over a recent trailing 12-month window, the broader Star, Palm, and Hibiscus island group carried a median sale price near $9.4 million, and homes there averaged well over 200 days on the market before selling [1]. A single 2025 sale on Star Island (26 Star Island Drive) closed at $120 million, which illustrates how wide the range runs [2]. This guide covers lot structure, pricing dynamics, and diligence for waterfront buyers.

Last updated: July 2026

The structure of the island

Star Island was developed in the 1920s as part of Carl Fisher's Miami Beach work, and it is defined by oversized lots, many exceeding 40,000 square feet. That lot size is the reason the island supports large single-structure homes and multi-building compounds rather than the tighter siting found in most Miami Beach neighborhoods. Access is through a single guarded bridge, which is the mechanical basis for the island's low density and privacy.

The architectural mix is shifting. Older Mediterranean-revival estates still trade, but newer construction leans toward contemporary design with large glass spans and deep-water dockage. For buyers, the practical distinction is not style but condition and seawall: an older estate may carry deferred structural and marine work that a new build does not.

What Star Island real estate costs in 2026

Because so few homes trade in any given year, "median" here is a rough guide. Across the Star, Palm, and Hibiscus island group, the trailing 12-month median was near $9.4 million, reportedly down about 20% from the prior period, which reflects a change in which homes happened to sell rather than a broad decline [1]. Active listings on Star Island have ranged from the high teens into the tens of millions, with at least one verifiable 2025 closing at $120 million [1][2].

The underwriting lesson: never price a Star Island home off a neighborhood median. Each property is close to unique in lot size, water frontage, dockage, and condition, so valuation is a bespoke comp exercise. If you are evaluating a specific estate, a buyer consultation is where that comp work starts.

Days on market and negotiating dynamics

Homes in this island group have recently averaged well over 200 days on the market before selling [1]. Long marketing times are normal at this price point and reflect the thin buyer pool, not a defect in a given property. For a buyer, that pace usually means there is room to negotiate on a listing that has sat, provided your offer is supported by defensible comps and a clear read on the seawall, dock, and structure.

Diligence specific to waterfront island estates

Seawall and dock condition. Deep-water frontage is a core value driver and a core liability. Get a marine inspection of the seawall and dockage, and confirm permits for any existing dock or lift.
Elevation, flood zone, and insurance. Confirm the flood zone, base flood elevation, and current insurance cost before removing contingencies. Coastal premiums have risen across South Florida.
Permit and construction history. For any recent or in-progress construction, pull the permit history and confirm closed permits, especially for waterfront and structural work.
Homeowners association and access rules. Confirm gate and guest-access rules and any architectural review requirements before you plan a renovation or rebuild.

Why individual sales matter more than any index here

At this price point, the transaction pool is small enough that the identity of each sale drives the statistics. The reported roughly 20% decline in the trailing 12-month median for the island group is a good example: it can reflect a period where a few interior or teardown lots traded while the largest waterfront estates did not, rather than any broad softening [1]. When someone quotes you a median for Star Island, ask what closed and when. A single $120 million sale like 26 Star Island Drive can distort a small sample in the opposite direction [2].

For the same reason, appraisal and financing on Star Island are their own diligence track. Lenders often require multiple qualified comps, and at this rarity level defensible comps can be scarce, which pushes many transactions toward cash or bespoke lending. If financing is part of your plan, involve your lender early so the appraisal path is clear before you are under contract.

Renovation, teardown, and rebuild considerations

Many Star Island trades are effectively land plus improvements, where the buyer intends a significant renovation or a full rebuild. If that is your plan, the diligence shifts to entitlements: current zoning and setback rules, height and coverage limits, seawall and dock permitting, and the timeline for architectural review. Coastal construction near the seawall carries additional permitting layers, and Florida's construction and elevation requirements have tightened. Price the entitlement timeline and the marine work into your basis, because on a large lot those items can rival the cost of the vertical construction.

How Star Island compares to other high-end options

If a single-bridge gated island is the goal, Key Biscayne offers island living at a broader range of price points, while the large-lot estate sections of Coral Gables offer mainland privacy without the marine-structure exposure. The right comparison depends on how much you value deep-water dockage and gated seclusion against carrying cost and insurance. If you are still deciding among these markets, my buyer consultation is where I lay out the tradeoffs against your specific requirements.

What to assemble before an offer

For a Star Island estate, the pre-offer package is heavier than a typical home purchase. Order a marine inspection of the seawall and dock, a full structural inspection of the residence, and a survey that confirms lot lines, easements, and any encroachments. Pull the permit history to verify closed permits on prior work, confirm the flood zone and elevation, and get a current insurance quote, since coastal premiums are a material carry. If you plan to rebuild, get a preliminary read from an architect or land-use attorney on zoning, setbacks, and coastal permitting before you commit. On a property of this size and value, that diligence spend is small relative to the basis and can change your offer materially.

Frequently asked questions

How much do homes on Star Island cost?

Pricing is highly property-specific. The broader Star, Palm, and Hibiscus island group carried a trailing 12-month median near $9.4 million [1], but individual sales run far higher, including a 2025 Star Island closing at $120 million [2].

How big are Star Island lots?

Many lots exceed 40,000 square feet, which is why the island supports large single-structure homes and multi-building compounds rather than tightly sited houses.

How do you get to Star Island?

By a single guarded bridge off the MacArthur Causeway. The island is gated, which is the basis for its low density and privacy.

How long do Star Island homes take to sell?

Homes in this island group have recently averaged well over 200 days on the market [1], which is typical at this price point and usually gives disciplined buyers negotiating room.

Gabriel

Sources

Gabriel A. Moyers, PA. eXp Realty. Florida License #3407280. Equal Housing Opportunity. This article is general information as of July 2026 and is not legal, tax, or financial advice. Verify current figures against authoritative sources before acting.