A Newly Built Oceanfront Compound in the Florida Keys With Its Own Sandy Beach Lists for $40 Million
The land was previously owned by the late naturalist Herbert Zim, the founder of the Golden Guides nature book series.
The land was previously owned by the late naturalist Herbert Zim, the founder of the Golden Guides nature book series.
It’s the second-most-expensive listing in all of the Keys, topped by a property just down the road that’s asking $42 million.
The roughly 7-acre spread on Plantation Key was previously home to the five-house compound of the late naturalist Herbert Zim, the founder and editor in chief of the Golden Guides nature book series.
The main house and guest house are available separately or as a package. Ginger Monteleone
For many decades, it was both Zim’s family estate and where he produced his Golden Guides, according to the current owner, Todd Maino. He bought the property, which encompasses six parcels, from Zim’s estate, he said. Mansion Global couldn’t determine what Maino paid.
Over the course of about four years, Maino, a commercial and residential developer, transformed the property into a new compound that was completed last year. There’s a new 8,200-square-foot main house with five bedrooms and a renovated three-bedroom guest house. Maino said he left some cosmetic details unfinished to allow the next owner to personalize the home.
“They can make it their own instead of buying somebody else’s vision,” he said.
The pool stretches 120 feet long. Ginger Monteleone
Off the main house, there’s a 120-foot pool with a hot tub, and beyond that, a sandy beach extends along the property’s 480 feet of water frontage. There’s a dock within a grandfathered-in boat basin that’s larger and deeper than what would be allowed today.
“The drag is over 6 feet, so you can have a pretty large boat there,” listing agent Angel Nicolas of the Nicolas Group at Serhant said. He and his colleague Courtney Conley listed the property a week ago.
The property is full of Florida wildlife, from osprey and sandpiper nests to peacocks that wander around.
“I actually had a manatee have a baby in the boat basin,” Maino said. “It’s ecologically balanced with nature. It’s not concrete jungle—it’s not Miami.”
Because much of the property is open land and not covered in protected trees, there’s opportunity to further develop the estate, whether that be adding another house or amenities like a tennis court or a helipad.
The main house and guest house, which stand on their own waterfront parcels, are also available for sale separately. The lot with the guest house is priced at $15 million, while the main-house lot is asking $27 million, Nicolas said.
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Mirvac’s 45-level Trielle has topped out at Yarra’s Edge, pairing riverfront apartments with wellness facilities, private dining and resident services.
Mirvac has topped out Trielle at Melbourne’s Yarra’s Edge, with more than 70 per cent of the riverfront development sold and approximately 80 per cent of purchasers intending to make their apartment a home.
The figures, released on September 22, point to an owner-occupier audience for one of the precinct’s final residential towers. Mirvac began developing Yarra’s Edge in 2003, and its latest addition occupies one of the remaining absolute riverfront sites.
Mirvac CEO of Development Stuart Penklis said existing residents were among those moving up within the neighbourhood.
“Many purchasers already have a connection to Yarra’s Edge,” Mr Penklis said, describing buyers whose changing needs were encouraging an upgrade within the precinct.
“As one of the final residential towers within Yarra’s Edge, Trielle represents the culmination of more than two decades of creating one of Melbourne’s most established and sought-after waterfront communities,” Penklis said.
“Positioned on the Collins Street axis with absolute river frontage, Trielle offers residents a rare opportunity to enjoy sweeping views across the Yarra River, Melbourne skyline and Port Phillip Bay, while remaining seamlessly connected to the CBD. With Trielle now more than 70 per cent sold, we’re continuing to see strong demand from buyers seeking quality homes in established locations.”

The developer also flagged a penthouse and sub-penthouse collection with larger layouts, premium finishes and broad outlooks. The planned wellness centrepiece, The Oasis, encompasses a 900-square-metre elevated urban rainforest.
Mirvac General Manager Residential Development Victoria Elysa Anderson said Trielle had resonated strongly with buyers seeking a rare lifestyle offering in Melbourne.
“Opportunities to secure a new luxury residence on a riverfront site of this calibre are incredibly rare, particularly within a community like Yarra’s Edge,” Anderson said.
“What makes Trielle unique is the combination of exceptional views, world-class residential facilities and the lifestyle that already exists around it. Residents are buying into a mature waterfront community with parks, promenades, dining, wellness and strong community connections already in place.”
The 45-level tower brings a substantial new presence to that waterfront. Its residential offering spans one-, two-, three- and four-bedroom apartments, with Signature, Prestige and Sub-Penthouse collections accommodating different household sizes. The north-facing position connects the apartments visually to the river and city beyond.
Seven storeys above the promenade, the planned Oasis combines planting and a running stream with a Scandinavian-inspired wellness club developed with spa specialist Naomi Gregory. Facilities include a 25-metre lap pool, hot magnesium pool, sauna, hydrotherapy, a gym, yoga and Pilates room, and treatment spaces.

The amenity extends beyond exercise. Residents will have access to The Biblioteca library and workspaces, ground-floor work pods, and The Salone piano lounge. A private Chef’s Table dining room offers a setting for larger gatherings, while a cinema, games room and sports lounge broaden the entertaining options. Concierge services and a dog-wash area support everyday routines.
Trielle comprises a collection of one, two, three and four-bedroom residences. Reflecting strong demand from owner occupiers, approximately 80 per cent of purchasers to date intend to live in their homes, highlighting the project’s appeal to those seeking a long-term waterfront lifestyle.
Mirvac has recently delivered The Albertine, a premium apartment development on the edge of Melbourne’s CBD, and is nearing completion of Prince & Parade in Brunswick, further strengthening its portfolio of thoughtfully designed apartment communities in some of Melbourne’s most sought-after urban locations.
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