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Palm Beach, Florida
Winthrop House holds 122 residences on eight floors at 100 Worth Avenue, where the avenue meets South Ocean Boulevard. Architect Mike Burrows designed it in 1970, and its signature survives every renovation cycle: a private tunnel that carries owners from the building directly to the beach. Plans run two to three bedrooms from roughly 1,500 to 3,500 square feet.
Market Intelligence
Closed sales in the selected window, grouped by price tier.
Winthrop House closed sales by price tier, trailing twelve months, data through July 31, 2026. Source: Beaches MLS. · Updated September 4, 2026
Closed sales, Beaches MLS. Select any tier to view its recent sales. Tiers with fewer than three sales list each sale but show no median.
The Building
Winthrop House anchors the town’s most famous intersection from the north corner, 100 Worth Avenue at South Ocean Boulevard, one address across from Kirkland House at 101. Mike Burrows designed the eight story building in 1970, and it has traded ever since on a combination nothing else at this entry point offers: the avenue out the lobby and a private tunnel under the boulevard to the sand.
Residences run two to three bedrooms from roughly 1,500 to 3,500 square feet, with a heated pool, rooftop sundeck, fitness center, club room and two garage spaces, behind a full time manager and 24 hour security. A July 2026 sale closed at $3.675M.
| Address | 100 Worth Avenue, at South Ocean Boulevard |
|---|---|
| Residences | 122, on eight floors |
| Built | 1970, by architect Mike Burrows |
| Plans | Two to three bedrooms, roughly 1,500 to 3,500 square feet |
| The Tunnel | Private passage from the building directly to the beach |
| Amenities | Heated pool, rooftop sundeck, fitness center, club room, two garage spaces |
| Security | Full time manager, 24 hours |
| How It Trades | Ocean view corners lead, renovated lines follow |
Addresses do the talking in this town, and 100 Worth Avenue says everything in three characters. The building stands where the avenue's shops, galleries and restaurants end at the ocean, sharing the corner with Kirkland House across the street. Owners live on the town's main stage with the beach as the backyard.
The private tunnel is the detail visitors remember: from the elevator to the sand without crossing a road, a convenience the town approved in another era and would never permit again.
With 122 residences from roughly 1,500 square feet, Winthrop House opens the Worth Avenue corner to buyers the boutique buildings cannot fit. Renovated lines with ocean views over the boulevard carry the building's top, and a July 2026 sale closed at $3.675M.
The scale also means steadier inventory than the twenty unit buildings nearby, which makes Winthrop House the practical first look for avenue buyers.
Side by side
Market data is pulled live from the MLS on a trailing twelve-month basis, across all property types. Building details below are reference.
View All Luxury Condos →Common Questions
At 100 Worth Avenue, the corner where Worth Avenue meets South Ocean Boulevard, directly across the street from Kirkland House. The avenue’s shops and restaurants start at the lobby door.
A July 2026 sale closed at $3.675M and a February 2025 sale at $2.86M. Current closings, medians and inventory are in the market table on this page, which updates automatically.
Yes. A private tunnel runs from the building under South Ocean Boulevard directly to the sand, an original 1970 feature the town would never approve today. It remains the building’s signature.
Two to three bedrooms from roughly 1,500 to 3,500 square feet across 122 residences on eight floors. Ocean view corners over the boulevard carry the premium.
A heated pool, a rooftop sundeck, a fitness center, a club room and two garage parking spaces, with a full time manager and 24 hour security. The beach tunnel completes the list.
They share the town’s best corner and split its buyers. Kirkland House is twenty residences directly on the sand at the top of the market, while Winthrop House offers the same address at a broader entry with steadier inventory. Many buyers tour both in the same afternoon.
We'd welcome the conversation.
