Paris · Île de la Cité & Île Saint-Louis

Buying an apartment
on Île Saint-Louis — Prices & Market

Two islands in the heart of Paris, two distinct worlds — the Île de la Cité, home to the institutions, and the Île Saint-Louis, a discreet residential enclave. A guide to prices, quays, and property types for acquiring an exceptional property in this unique area.

View Paris apartments on PDC

15 440 €

Average price per square meter — Île Saint-Louis

18 730 €

Price per square meter — most valuable docks

11 ha

Total surface area of Île Saint-Louis — a very rare market

17th

Dominant century of construction — private mansions

Two islands, two markets

Île de la Cité and Île Saint-Louis — understanding the market

In the heart of Paris, the two natural islands of the Seine occupy a unique place in the capital's heritage. But their real estate reality is radically different — it is essential to distinguish between them before considering a purchase in this exceptional area.

Île de la Cité · Paris 1st & 4th

Île de la Cité

The Île de la Cité, the historical heart of Paris, is more than 90% occupied by institutions—the Palais de Justice, the Police Prefecture, Sainte-Chapelle, Notre-Dame Cathedral, and its surrounding area. Residential space is extremely limited: just a few dozen apartments, tucked away in old buildings between the Square du Vert-Galant and the Pont Saint-Louis. Transactions are extremely rare and almost exclusively off-market. A property becoming available on the Île de la Cité is a major real estate event.

Île Saint-Louis · Paris 4th arrondissement

Île Saint-Louis

The Île Saint-Louis is Paris's most exclusive residential enclave. This 11-hectare island, entirely built upon in the 17th century, houses several hundred apartments converted from former private mansions. The most sought-after addresses are concentrated along the Quai d'Anjou, Quai de Bourbon, Quai d'Orléans, and Quai de Béthune. The market there is structurally closed—few properties are sold, turnover is very low, and a significant portion of transactions are completed without advertising.

Reference addresses

The docks of Île Saint-Louis — hierarchy and price

On Île Saint-Louis, location is more important than size. An apartment on a high floor overlooking the Seine, with unobstructed views of the riverbanks and monuments, commands a price that is incomparable to an equivalent property in the interior of the island. The four quays that border the island each have their own character and market.

🏛️

Quai d'Anjou North bank · Seine and right bank views · most sought-after

The Quai d'Anjou is the most sought-after address on the island. Facing the Right Bank, with views of the Hôtel de Ville and the rooftops of Paris, it houses some of the most remarkable 17th-century private mansions. Rare continuous balconies, ceiling heights of 4 to 5 meters, and period herringbone parquet flooring are among its hallmarks. Apartments on the main floor with balconies overlooking the quayside command the highest prices on the island—up to €18,000 to €20,000 per square meter for exceptional properties.

⛪

Quai d'Orléans South Shore · View of Notre-Dame and Île de la Cité · Highly sought-after

The Quai d'Orléans offers the most iconic view on the island—facing Notre-Dame and the Île de la Cité, with a south-facing aspect. Apartments on this quayside benefit from exceptional natural light and views of the cathedral, which have earned them a worldwide reputation. International demand is particularly strong, driven by American, British, and Swiss buyers drawn to this extraordinary setting.

🌊

Quai de Bourbon Northwest shore · view of the marsh and the Marie bridge · absolute calm

The Quai de Bourbon, at the western tip of the island, offers a panoramic view of the Pont Marie and the banks of the Marais. Quieter and less exposed to traffic, it is a popular alternative to the Quai d'Anjou—with slightly lower prices but often a higher quality of life. Its 17th-century townhouses boast some of the best-preserved interiors on the island.

🌿

Quai de Béthune Southeast bank · view of the left bank of the Seine · residential and quiet

The Quai de Béthune, on the east side of the island, offers views of the Seine on the Left Bank and of the Pont de la Tournelle. More residential and quieter, it attracts buyers who prioritize tranquility over prestigious addresses. The price per square meter is structurally slightly lower than on the Quai d'Anjou and Quai d'Orléans, while still remaining in the upper range of the Parisian market.

Market data · 2026

Real estate prices on Île Saint-Louis

The Île Saint-Louis boasts one of the highest average prices per square meter in Paris—structurally driven upwards by the scarcity of available properties and the architectural quality of its 17th-century buildings. The most common properties (80 to 120 sq m, without riverfront access) sell for around €12,000 to €15,000 per sq m. Apartments on higher floors with Seine views and balconies reach €17,000 to €20,000 per sq m. Very large apartments in private mansions (150 to 220 sq m), which are extremely rare, can exceed this price range.

The average price of apartments on Île Saint-Louis is €15,440/m², with 80% of properties priced between €12,250 and €18,730/m². A five-room apartment averages €18,070/m². *(Efficity, May 2026)*

Source: Efficity, May 2026. These prices are for goods published on portals — the share of off-market transactions remains significant in this micro-market and may include goods at undisclosed prices.

Why do prices remain high?

The Île Saint-Louis is a structurally constrained market. Almost all the buildings are listed or registered as Historical Monuments—which prohibits any exterior alterations, limits interior work, and protects the entire 17th-century architecture. This preservation constraint, combined with the complete absence of new construction, creates an absolute scarcity that sustains prices regardless of real estate cycles. A transaction on the island can wait for years—owners don't sell, they pass on their properties.

🏛️ Apartments in 17th-century private mansions

Most of the island's apartments come from the subdivision of former 17th-century townhouses. Ceiling heights range from 3.50 to 5 meters, and they feature stone staircases, listed painted decorations, and original parquet floors. Average size: 80 to 200 square meters.

🌊 Quayside apartments with Seine views

The most sought-after and highly valued type. Features a balcony or loggia overlooking the river, guaranteed exposure, and views of monuments. Availability is virtually nonexistent at this time—these properties are not listed with agencies.

🔝 Duplexes and top floors with terrace

Top-floor duplexes, sometimes with terraces or rooftop terraces, represent the rarest segment of the island. They offer spectacular living spaces under 17th-century rooftops and unobstructed views of Paris. Only about ten such properties are available on the island in total.

Luxury apartments for sale in Paris on PDC

Propriétés De Charme distributes a selection of prestigious apartments for sale in Paris, published by specialist partner agencies and private owners.

View Paris apartments on PDC

Discover it on Charming Properties