The world's priciest market per square metre: a reported record deal, an unsold penthouse, studios from about 15 m2, a district built on reclaimed land and what it takes to live there.
Monaco covers about two square kilometres, and almost every property headline about it is a superlative. That is the point of this article: where the extremes are, which numbers are solid and which are only reported, and why a record in the principality tells an ordinary buyer very little. Everything below is a report of what was published, with the source; nothing here is offered through us and prices change.
Why Monaco is the priciest market per square metre
Monaco's statistics office IMSEE reported in early 2026 that the average price in 2025 was 57,569 euros per square metre, with Larvotto at the top at 71,167 euros (as reported by Riviera Radio and Monaco Tribune). One caution: IMSEE changed its method, so the 2025 figure includes first sales of new buildings and is not comparable with the 2024 resale-only average of about 52,000 euros per square metre. Press comparisons of the two mix methods.
Other numbers are looser. A summary of Knight Frank's 2025 Wealth Report relayed by a market guide said that one million dollars buys about 19 square metres of prime property in Monaco, against about 16 in an older edition. We saw this only second-hand, so treat it as indicative. The market is also thin: Riviera Radio reported 493 transactions in 2025, of which 429 were resales worth 3.2 billion euros.
The biggest deal: reported, not confirmed
Monaco Tribune reported on 24 April 2026, citing documents seen by Bloomberg Businessweek and the Monaco land registry, that a 21-room apartment of about 2,500 square metres on five floors in the Le Renzo building at Mareterra changed hands for 471 million euros. We do not name the parties. The article called it the most expensive residential transaction ever recorded worldwide. Neither buyer nor seller confirmed the price in the article, and it gives conflicting completion dates, so we state no year. Read it as a reported record, not a registered one.
The penthouse that was never confirmed sold
For years the Odeon Tower penthouse was billed as the world's most expensive apartment. Coverage between 2014 and 2016 gave asking prices of roughly 335 to 440 million dollars, and later guides give estimated values in the range of 335 to 380 million euros. We found no confirmed sale. One source mentions a sale at about 300 million euros, but nothing corroborates it. It is a good example of how asking prices and estimates travel as if they were deals.
Land taken from the sea: Mareterra
With no room to build up the coast, Monaco builds into the sea. Mareterra, the new district developed by L'Anse du Portier, was reported inaugurated at the end of 2024, with 136 of its 140 apartments sold by mid-2022 (Monaco Life). Prices are disputed. Knight Frank's 2025 report, as summarised in search results, said some units passed 100,000 euros per square metre, and unofficial estimates range from 100,000 to 130,000, while IMSEE's official average for Larvotto, where Mareterra sits, is lower. Official statistics and private estimates measure different things. For the neighbouring French coast, see the Riviera property guide and France's records. Monaco has no islands to sell; its land is what it has reclaimed.
The smallest: studios from about 15 square metres
In October 2026 agency listings included a Monte-Carlo studio of about 15 square metres plus a 4 square metre terrace at 890,000 euros before fees, a studio of about 30 square metres at 1.15 million euros before costs and a new 46 square metre studio at 2.125 million euros. They carry no date, may be sold or withdrawn, and are examples of the range, not offers. For orientation on the principality, see Monaco: surprising facts for a first visit.
Living there is a separate step
Buying is not the same as being allowed to live in Monaco, and the principality's tax reputation is not automatic. According to the official MonServicePublic pages, anyone aged 16 or over who stays more than three months a year needs a residence permit. EEA nationals need an ID card or passport, non-EEA nationals a long-stay visa first. Applicants must show suitable housing, which can be owned or rented, and sufficient resources, for example by a bank reference from a Monaco bank. The sufficient amount depends on the bank, and the basic permit is valid for one year. Third-party guides often quote a deposit of 500,000 euros; we did not find that in the official pages we saw. Whether a non-resident can buy without a permit we could not confirm, so ask a notary.
What an ordinary buyer should take from it
- A record is not a benchmark. Use IMSEE or notary data for the district and building you are considering, and check which method the number uses.
- Count the costs. A guide from a local agency puts the buyer-side agent fee at 3% plus 20% VAT, and registration duty on a resale is reported at about 4.75%, with notary fees on top. Confirm with a Monegasque notary, see total cost of ownership abroad.
- Monaco has no annual property tax and no personal income tax on individuals according to guides, with exceptions, so check your own tax residency, see tax residency when relocating.
- Plan the permit first: housing, funds and a clean record are needed, and the process is the principality's decision, not the seller's.
- Small and unusual means thin resale. A tiny studio or a unit in a new district is hard to compare and may be slow to sell.
If you are weighing a property on the Riviera or in Monaco, an independent buyer-side adviser such as D.H. Realting, based in Warsaw, can help line up local lawyers and agents who have been checked first.