Buy Property in Le Portier / Mareterra, Monaco
Monaco's newest waterfront quarter, inaugurated 4 December 2024. Reclaimed land between Larvotto and Monte-Carlo, home to Le Renzo, Les Jardins d'Eau and the Villas Collection.
Le Portier is the quieter and more deliberate end of Monaco. Built on approximately six hectares of land reclaimed from the Mediterranean between Larvotto and Monte-Carlo, it is the first genuinely new neighbourhood the Principality has added in decades. For MonacoViews users, we present it here as Monaco's ninth district.
A note on naming and status. Whether Le Portier officially constitutes Monaco's ninth district depends on the source. Some regard it as a full official district following its inauguration on 4 December 2024; others treat it primarily as a major new eco-district and land-reclamation project sitting within existing administrative boundaries. For user-experience purposes MonacoViews presents it as the ninth district. The two names are largely interchangeable: Mareterra is most often used for the land reclamation and the development as a whole, while Le Portier is most often used for the new private marina at the seaward edge and for the district in administrative contexts.
Six things that set Le Portier apart
Three residential components
Le Renzo by Renzo Piano Building Workshop, Les Jardins d'Eau by Valode & Pistre, and the Villas Collection — a small enclave of private villas with direct sea access.
Private Le Portier marina
A protected marina for day boats and resident use, screened from Larvotto beach and the Mediterranean by Le Renzo and Le Mirabeau.
Extended Japanese Garden
The Principality's Japanese Garden was extended across the new land, physically connecting Larvotto beach to Mareterra via the Pinède Belvédère Gérard Brianti walkway.
BREEAM and HQE eco-architecture
Photovoltaic roofs, rainwater recovery, solar hot water, and 30 per cent planted surface area. Monaco's only photovoltaic-roofed residential buildings sit here.
Scarcity and discretion
The total residential stock is small. Turnover is low, recorded sales are rare, and most transactions are handled privately — the defining character of the address.
Record-setting prices
The April 2026 sale of a five-floor apartment in Le Renzo for €471 million is believed to be one of the largest single residential transactions in history.
A €471 million apartment, instantly redefining the global top of the market
In April 2026, Ukrainian businessman Rinat Akhmetov reportedly purchased a five-floor, 21-room waterfront apartment in Le Renzo for €471 million. The transaction is believed to be one of the most expensive single residential property sales in history, and instantly positioned Le Portier as one of the most prestigious and exclusive residential addresses not only in Monaco but globally.
What the sale confirms about the district is simple: supply is small, water frontage is finite, and the addresses here trade on scarcity. Reliable resale comparables will be rare for years to come.
Read the full MonacoViews report: Ukrainian billionaire breaks world property record with €471m Monaco penthouse purchase
Three signature buildings and one shared landscape
Le Renzo
Designed by the Renzo Piano Building Workshop. The landmark apartment building at the water's edge, distinguished by cascading terraces, photovoltaic roofs, and a mirrored water feature on the ground floor. Home to the record-breaking April 2026 sale.
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Les Jardins d'Eau
Designed by Valode & Pistre. The quieter apartment building set slightly inland from the water, wrapping the extended Japanese Garden and the Pinède Belvédère walkway with large private terraces.
View building profile
The Villas Collection
A small enclave of private villas with direct sea access, arranged along the seaward side of the peninsula. Ownership is discreet and rarely publicly discussed.
Le Portier through the MonacoViews lens
Original photographs by the MonacoViews team, captured on location at Mareterra, the Le Portier marina, and the extended Japanese Garden. Coordinates are GPS-recorded on site.
Where Le Portier sits
Le Portier bridges Larvotto beach to the east and Monte-Carlo to the west. The Pinède Belvédère Gérard Brianti walkway runs along the upper level of the peninsula, linking Larvotto directly through the Japanese Garden and Les Jardins d'Eau to the water's edge at Le Renzo.
From the district, Casino Square is approximately five minutes on foot, the Grimaldi Forum is immediately adjacent, and the Japanese Garden is both a public amenity and a private landscape for residents.
Adjacent districts and landmarks
- Larvotto — directly accessible via the Pinède Belvédère walkway. Larvotto beach is Monaco's principal stretch of sand.
- Monte-Carlo — five minutes on foot via the coastal route. Casino Square, the Hôtel de Paris, and the Carré d'Or.
- The new Le Portier private marina — day-boat moorings and protected berthing at the seaward edge.
- The extended Japanese Garden — connecting Larvotto to Mareterra through stone, water and sculpted pines.
- Grimaldi Forum — convention centre immediately adjacent.
Mostly off-market, almost always private
Le Portier residences rarely appear on open portals. The residential stock is small by Monaco standards, the developer's original allocations are largely complete, and most transactions are handled privately through preferred agents or direct introductions.
If you are serious about the address, the practical path is to register a specific buyer brief with MonacoViews. We will route credible opportunities to you as they surface.