On Sunset Islands, a Teardown and a New House Sell for the Same Price. What Is the Buyer Paying For?

What does $34 million buy on the Sunset Islands? In October 2025 it bought a house built in 1940 on Sunset Island II. That house was marketed as a teardown, so the buyer was expected to demolish it. In June 2026 the same $34 million bought a house on Sunset Island III that had been finished that year, with a rooftop deck, a waterfront pool and stone finishes.

The price was the same, but the products were very different. A buyer comparing Miami Beach's gated bay islands needs to understand why those two numbers match before reading any listing here. On these four islands, the land sets the price. A finished house mostly buys you time.

The Same Money Bought Two Different Things

The Sunset Islands have no condos and no commercial strip. They are four man-made islands in Biscayne Bay between the Venetian Causeway and the Julia Tuttle Causeway. The supply of waterfront lots is fixed, and the past year of reported sales shows how the market prices that limit.

The Real Deal reported the 1821 West 27th Street sale in October 2025 and the 2288 Sunset Drive sale the week before. Its June 10, 2026 report covered the finished home at 1745 West 24th Street. Its June 23, 2026 deals roundup put 2131 Lake Avenue at the top of South Florida's home sales recorded that day. The property sold off-market, and the seller had owned it for decades.

The highest price on that list went to land. The 2131 Lake Avenue property sold for $35 million as an apparent development site. The Sunset Island II teardown and the finished house at 1745 West 24th Street tied for second at $34 million, and the finished house sits on a lot half the size of the teardown's.

Price Per Waterfront Foot Ran Backward

Waterfront footage explains these prices better than interior square footage does. Two of the deals in the table were reported within a week of each other in October 2025, and both disclosed their frontage:

• 1821 W. 27th St., the teardown. $34 million for 150 feet of waterfront works out to about $227,000 per foot of shoreline, for a house the buyer was expected to demolish.
• 2288 Sunset Dr., the finished 2024 home. $25.4 million for 170 feet of waterfront works out to about $149,000 per foot, with a new 6,600-square-foot house included.

The property with the older house and less shoreline sold for more per foot. That makes sense once the house is treated as the smaller part of the price. The 1821 parcel covers 0.6 acre, twice the 0.3 acre at 2288 Sunset Drive. Its value came from the size of the lot and from where it sits, next to a property the same buyer already owned.

The Six-Year Clock Behind a Finished House

The clearest example is 1745 West 24th Street, which has a reported sale at both ends. According to The Real Deal, the developer LLC that built the house paid $5.7 million for the lot in 2020. The finished home was completed in 2026 and sold that year for $34 million.

The $28.3 million gap between those two numbers covered four things.

1. Design and construction of a six-bedroom, 6,200-square-foot house.
2. About six years of holding the land, from the 2020 purchase to the 2026 sale.
3. The developer's return for taking on that risk.
4. Whatever the 0.3-acre lot itself gained in value while the house went up.

A sale price does not separate those parts. The teardown sales show how big the fourth part became. By 2025 and 2026, a waterfront teardown and a development site on these islands sold for $34 million and $35 million, so most of the 2026 value at 1745 West 24th Street could have been the ground under the house.

For a buyer, that changes the decision. Someone who pays $34 million for a teardown gets more land and starts the process the 1745 developer finished in 2026, with the design, construction and waiting all still ahead. Someone who pays $34 million for a finished house gets less land and gets to skip those years. On Sunset Islands right now, that time is the main thing the extra construction spending buys.

Away From the Water, the Lot Still Sets the Price

If land is what buyers pay for here, interior lots should carry a large premium too, even without shoreline. They do.

In January 2026, The Real Deal reported a signed contract on a non-waterfront Sunset Islands home asking nearly $18 million. That contract was the most expensive of the seven signed in Miami-Dade between December 29 and January 4 among listings asking $4 million and up. The property is 1800 West 27th Street on Sunset Island II, a new home completed in 2025 on nearly a third of an acre.

That asking price is about half of what the waterfront teardown at 1821 West 27th Street brought on the same island. A brand-new house on an interior lot asked about half the price of an older waterfront house slated for demolition. The difference comes down to the water and the dock.

Why Land Holds Its Price Here

The Q3 2026 numbers for the wider coastal market show how little is for sale. For the Miami Beaches segment, which runs from Sunny Isles Beach to Key Biscayne, Haute Living's October 2026 market report recorded the following for Q3 2026:

• Single-family closings rose 20% to 95.
• The median price rose 17% to $3.3 million.
• The average price rose 28% to $7.7 million.
• Single-family inventory fell 27% to 256 homes, the lowest level since 2014.

Those figures cover a coastline far larger than four islands in the bay. They still show the conditions behind the Sunset Islands sales. When there is little inventory, a buyer who wants a waterfront single-family home inside a guard gate has few alternatives. A lot that comes up for sale competes mainly with other lots, and there are very few of those. That is how a decades-old house on a large lot can sell at a finished-home price.

The Next Step Is Assembling Lots

If land sets the price, the next move is to buy the lot next door, and that has already happened twice on these islands.

The Real Deal reported that Abode18 LLC paid $26.5 million in 2024 for 1835 West 27th Street. It then paid $34 million for the adjacent 1821 West 27th Street parcel, bringing its reported spending on the two to $60.5 million.

Sunset Estates shows what a finished assembly looks like. According to Robb Report, developer Todd Michael Glaser and architect Kobi Karp built the main residence, completed around 2020. In 2022 the owner tore down the neighboring home and replaced it with a guesthouse. The two-home compound was completed in 2025 and covers about three-quarters of an acre with 187 feet of waterfront. As of the magazine's May 27, 2026 article, it was offered at $110 million.

The asking price at Sunset Estates is far above the $60.5 million Abode18 paid for its two parcels. Here again, combining lots and finishing the build is what takes most of the time and adds most of the value. The value of two adjacent lots on a fixed supply of islands depends on how hard it is to put them together.

Questions Buyers Ask

Does a teardown on Sunset Islands cost less than a finished home? Not in the sales reported in 2025 and 2026. A waterfront teardown sold for $34 million, and a development site sold for $35 million. Finished waterfront homes sold for $25.4 million and $34 million.

What is the better yardstick, price per square foot or price per waterfront foot? On these islands, lot size and shoreline explained the prices better than interior space did. The teardown at 1821 West 27th Street sold for about $227,000 per foot of waterfront. The finished home at 2288 Sunset Drive sold for about $149,000 per foot.

Is there city work on the islands right now? The City of Miami Beach's Sunset Islands II and III infrastructure project replaced decommissioned water and sewer mains under the water by horizontal directional drilling. The work started in September 2025, and the City forecast full restoration by fall 2026. In its September 8, 2026 update, the City said road resurfacing was complete and final striping was being prepared.

Gilles Rais Fine Homes can help you weigh lot size, waterfront footage and the time a build takes against each other on any parcel you are considering, and handle the conversation discreetly. Request a Private Consultation.