Pitfalls and Mistakes to Avoid Before Investing in Real Estate in Monaco

Published on May 26, 2026 and written by Cyril Jarnias

Entering the Monaco real estate market means playing in the global major league. Price per square foot is the highest on the planet, supply is structurally limited, and the regulatory framework—tax, banking, urban planning—is stricter than almost anywhere else. In this context, even a minor mistake can quickly cost hundreds of thousands of euros, or even millions.

Understanding the Reality of the Market Before Getting Started

The first pitfall is projecting onto Monaco habits acquired in other real estate markets, even very high-end ones. Here, the rules of the game are different.

The market is both ultra-expensive, structurally scarce, and surprisingly resilient. The Monaco Statistics Institute observed an increase of nearly 15% in the average price per square meter in 2024, reaching over €58,000 per m². In 2025, this average price slightly declined by about 1.4%, to around €57,500 per m², but remains at a historic high. Over the decade, data from the Real Estate Observatory shows a progression of approximately 67%, or nearly 3.8% per year, in a market that has not experienced a major crash and has always rebounded quickly after global cycles.

The “Recalibration” of 2026: Strong Market, But More Selective

In 2026, several major agencies speak of a phase of “recalibration”. Transactions continue, international capital remains present, but buyers are no longer willing to pay “any price” for just a Monaco address. They scrutinize much more finely the orientation, quality of the building, services, privacy, resale prospects, and long-term liquidity.

Properties offering true scarcity – panoramic sea views, large areas, generous terraces, parking, security, full services, and renowned buildings – continue to sell at record levels. Conversely, anything that does not check these boxes takes longer to sell, and the gap is widening between “best-in-class” assets and the rest of the market.

Mistake #1: Believing that “All of Monaco Goes Up”

It is common, especially among foreign investors, to view Monaco as a homogeneous block where “everything eventually goes up.” The data shows exactly the opposite: progress is highly selective. Neighborhoods like Larvotto or Carré d’Or, or certain parts of the “billionaires’ triangle,” have driven the market upward with values well exceeding €70,000 per m² and five-year performance above 30%. Conversely, older apartments without a view, in buildings needing heavy renovations or with fragile condominiums, see their selling times lengthen and their prices subject to heavy negotiation.

Looking only at an average price per square meter, without considering micro-location, the building, and the precise characteristics of the property, is one of the costliest mistakes one can make.

Underestimating the True Cost of a Purchase: A Classic at Monaco Prices

Second major source of disappointment: systematically forgetting ancillary costs. In Monaco, the listed price is never the final cost of the transaction.

Acquisition Costs: A Massive Surcharge on the Entry Ticket

Depending on the nature of the property (new or resale) and the acquisition structure (individual, Monaco company, foreign structure), the additional bill varies significantly.

The main orders of magnitude can be summarized as follows:

Failing to include these percentages in your overall budget means miscalculating your price range. On a resale apartment for €10 million purchased directly by an individual, registration duties can reach 4.5%, i.e., €450,000, plus likely 1.5% in notary fees (€150,000). Just the tax and notary portion therefore amounts to around €600,000.

Agencies and Commissions: Who Pays What?

Another often misunderstood point: the structure of agency fees. In Monaco, they are regulated by the Real Estate Chamber and, in the most common arrangement, split between seller and buyer. The market standard is typically as follows:

For a purchase of €10 million, the agency fee on the buyer’s side can therefore climb to €360,000. Some platforms or agencies break this pattern by charging only the seller, but this is not the norm. A common mistake is to aggressively negotiate the property price without factoring these fees into the total investment cost calculation.

Recurring Charges: A “Hidden Rent” for Owners

Many new buyers take comfort in noting that there is no annual property tax in Monaco. They thus forget an item that, in luxury buildings, often far exceeds a classic property tax: condominium fees.

The observed ranges give a good idea of the annual “maintenance ticket”:

For a large apartment in a very high-end building, it is not uncommon for “condominium fees + insurance” to approach €30,000 to €50,000 per year, not including personal services (domestic staff, drivers, etc.). For a rental investor, these costs significantly eat into an already modest yield, with market gross returns typically between 1.5% and 2.5%.

Mistake #2: Building a Business Plan on the Purchase Price Alone

One of the most recurring pitfalls is reasoning solely in terms of acquisition price without integrating:

In a market where the dominant logic is capital preservation and long-term appreciation rather than yield, getting these parameters wrong means adopting a financial strategy that is not aligned with the Monaco reality.

Going Astray with Taxation and Residency

Monaco’s tax system is a dream, but it is also the source of some of the costliest misunderstandings. The myth of a simple and universal “tax haven” masks a much more nuanced reality.

The Explosive Case of French Nationals

The costliest misunderstanding, repeated every year, concerns French nationals who imagine that by moving to Monaco they will no longer pay income tax. The 1963 Franco-Monegasque tax treaty provides exactly the opposite: with a few historical exceptions, a French national domiciled in Monaco remains taxable in France on their worldwide income. In other words, buying an apartment in Monaco, obtaining a residence permit, and living there does not exempt a French national from declaring and paying income tax to the French tax authorities.

For a high-income taxpayer, this “oversight” can result in very heavy tax reassessments, interest, and penalties. This is clearly one of the biggest tax traps related to Monaco real estate.

Who Actually Benefits from Monaco’s Tax System?

The system is, however, extremely attractive for a well-defined profile: non-French, non-American, with non-salaried income exceeding $1.5 million per year and willing to spend most of the year in the Principality. For these individuals, the absence of income tax, wealth tax, and capital gains tax on real estate can represent an annual tax saving on the order of $680,000 to $820,000 on $1.5 to $2 million in capital income, according to some estimates.

Residency: Conditions, Timelines, Classic Mistakes

Obtaining residency in Monaco (and therefore its tax advantages, for those who can benefit) is based on four cumulative conditions:

Here again, misunderstandings are common. A few examples:

The process, once the file is complete, generally takes three to six months. To align with a specific tax calendar (e.g., leaving a country at the end of a fiscal year), it is prudent to start the procedures at least nine months in advance. Not anticipating this timeline can lead to overlapping residencies, tough discussions with the tax authorities of the home country, and risks of double taxation.

Mistake #3: Planning Taxes After Buying

One of the worst reflexes is to buy first in Monaco, and then ask tax questions. The correct sequence is exactly the opposite:

– Audit your current country’s tax system (exit tax, declaration obligations),

– Check the compatibility of your passport and status with Monaco rules (especially for French and American nationals),

– Structure your assets (companies, trusts, holdings, etc.) before any change of residence,

– Then and only then commit significant amounts to Monaco real estate, in line with your long-term tax strategy.

Getting Lost in Legal Structures and Transparency

Another major risk area: the choice of holding structure. Between direct ownership, a Monaco SCI, a foreign company, or a more complex vehicle, foreign investors are quickly tempted by sophisticated arrangements. Recent Monaco regulations, aligned with international transparency standards, severely penalize opaque structures.

Transparent vs. Opaque Structures: A Matter of Cost and Risk

The legislation now clearly distinguishes two worlds: “transparent” structures, whose ultimate beneficial owners are clearly identified, and opaque arrangements, often foreign or offshore, that hide the true ownership.

The consequences are multiple:

The tax authorities have clearly shown their willingness to penalize opaque arrangements and encourage transparent structures (notably properly declared Monaco civil companies).

Mistake #4: Prioritizing Secrecy Over Compliance

Since the reforms adopted between 2011 and 2024, Monaco is no longer a territory of complacency for structures of indeterminate origin. Non-transparent entities (companies, trusts, foundations) holding Monaco real estate must appoint an approved tax representative, maintain a register of ultimate beneficial owners, and file a detailed annual declaration.

Neglecting Legal and Technical Due Diligence: A Dangerous Gamble

In Monaco, there is no legal withdrawal period once the preliminary sales agreement (compromis de vente) is signed. The promise therefore firmly commits both buyer and seller, with the deposit (often 10% of the price) held by the notary. In short, most checks must be done before this signature, not after.

Not Reading the Condominium Documents: A Pitfall of Renovation Costs and Fees

For any apartment purchase, the primary source of information is the condominium bylaws (règlement de copropriété) and all general assembly resolutions from recent years. Not diving into them means buying blind.

Before any signature, it is essential to ask the building manager (syndic) for:

An insufficiently provisioned reserve fund, recurring conflicts between owners, unfunded work programs, or an abnormally high turnover of the concierge/management team are all warning signals. They can result, in the medium term, in special assessments and a deterioration in the quality of life in the building.

Not Verifying Zoning, Diagnostics, and Compliance: A Double Mistake

Monaco imposes a very high level of technical and planning compliance. Before buying, you should systematically:

Omitting these checks means risking discovering after the purchase that the property is not compliant, that costly works are mandated by the city, or that certain intended uses (e.g., short-term furnished rentals) are prohibited.

Mistake #5: Signing Too Quickly Under Pressure of Scarcity

The “there’s nothing left on the market, you have to decide today” speech is unsettling, especially in Monaco where scarcity is very real. Yet, the buyer’s best protection remains discipline: refuse to sign a preliminary agreement until you can explain, in simple terms, what you are buying, what you are allowed to do with it, what charges await you, and what works are foreseeable.

Scarcity never justifies skipping due diligence. If the file is not clear, it is often better to let an opportunity pass than to commit to a poorly understood asset in this type of market.

Underestimating the Cost, Complexity, and Limits of Renovations

Many investors see in the price differential between new “turnkey” apartments and older stock an opportunity for a “renovation gap.” The strategy can be relevant, but it is fraught with pitfalls in Monaco, where the cost and regulatory framework of works are among the most restrictive in Europe.

Renovation Costs Significantly Higher Than Elsewhere

Several factors mechanically increase renovation costs:

– Obligation to use Monaco companies or specifically authorized foreign companies,

– Limited work hours (often 9am–12pm and 2pm–5pm, four effective days per week), with frequent bans on work in August and sometimes July,

– High logistical costs (limited space, difficult access, restricted deliveries, materials often imported),

– Technical requirements (resistance to sea humidity, acoustic standards, fire safety, etc.),

– Systematic checks by approved engineering firms and DPUM verification before occupancy authorization.

To this, add a safety margin of 10 to 20% for technical or administrative contingencies. Failing to include these cost levels leads to severely underestimating the overall budget.

Permits, DPUM, Syndic: A Process to Anticipate Before Buying

Another common mistake: buying a property imagining drastic transformations, without checking if they are authorized. Monaco regulations require prior approval for many types of work:

– Creation or removal of full-height partitions,

– Modification of external openings, windows, French doors,

– Transformation of balconies, terraces, or loggias,

– Change of use (residential to commercial, for example),

– Alteration of the facade or visible exterior appearance.

The review of the file falls under the DPUM, but the building’s syndic is also a key player: without the condominium’s approval for certain structural works, the project may be simply impossible. Furthermore, the permit is personal: it is not automatically transferred to a new buyer.

Mistake #6: Overpaying for a “Fixer-Upper” Without Real Margin

Investing in an apartment to renovate can create value, but only if the gap between the purchase price + renovation costs + acquisition costs and the expected value of a finished “turnkey” product leaves sufficient margin. However, in Monaco, the market for already renovated very high-standard properties commands a high price, and the cost of renovations leaves little room for error.

Many buyers, fascinated by the prospect of “getting a good deal” on a tired apartment, forget to precisely estimate the works according to local standards, factor in administrative delays and time constraints, and compare with actual sales of comparable already-renovated properties. Result: a project that seemed profitable on paper turns into a simple long-term bet with no real short-term value gain.

Neglecting the AML / KYC Dimension: A Possible Transaction Block

Monaco is today one of the strictest states in the world regarding anti-money laundering and counter-terrorism financing. Since real estate is considered a high-risk sector, authorities have strengthened controls on real estate transactions in recent years.

Agents, Notaries, Banks: Triple Vigilance

The actors in the real estate chain – agencies, notaries, banks, property dealers, civil companies, lawyers – are subject to enhanced due diligence obligations. Concretely, this involves:

A client unable to satisfactorily document the origin of their funds, or who refuses to cooperate on these matters, may see the relationship terminated outright. In extreme cases, this blocks bank account opening, the signing of the deed before the notary, or even triggers a report.

Mistake #7: Arriving Without a Structured “Source of Wealth” File

For an international investor, showing up at a Monaco bank or notary without a complete file (proof of income, documentation on companies held, sale of holdings, inheritances, etc.) is a major mistake. In Monaco, you don’t “tell” your wealth story; you prove it with supporting documents.

Poorly Choosing Your Advisors: A Risk That Costs Millions

Given the technical nature of the Monaco framework, not surrounding yourself with the right professionals is probably one of the biggest risks.

A Notary is Essential but Not Sufficient

The notary in Monaco plays a central role: they verify the chain of title, the absence of undisclosed liens or mortgages, draft the deeds (preliminary and final sale), collect and distribute funds, and register the transaction. However, their mission is limited and does not cover the full spectrum of risk for the buyer.

Choosing Your Agency Well: Reputation, Network, Transparency

In a market where some of the best opportunities circulate confidentially, the real estate agency is not just about opening doors. A good agency in Monaco is recognized notably by:

Conversely, negative signals are numerous: absence of client reviews, online comments reporting lack of follow-up or unfulfilled promises, disproportionate insistence on closing quickly, systematic avoidance of topics related to real costs or regulatory constraints.

Mistake #8: Relying on a “Friend of a Friend” Without Verifying Their Status

Monaco attracts a host of more or less official intermediaries. A basic prudence reflex is to verify that the person presenting themselves as a real estate agent has the required legal status, is attached to an authorized structure, and is able to present their professional guarantees.

Failing to do these checks risks collusion of interests, biased information, or even transactions involving disputed or poorly documented properties.

Mismanaging the Search, Viewing, and Negotiation Phase

Even with a good financial file and good advisors, many investors get lost in the practical phase: property selection, viewings, comparisons, offers, and negotiation.

Seeing Only One Property, Rushing Into a Crush

Limiting your search to a single opportunity, or getting carried away by a crush without putting the apartment in perspective against other products, often leads to overpaying or overlooking important flaws.

Taking the time to:

– Clearly define your priorities (size, floor, view, neighborhood, use – primary residence, pied-à-terre, rental investment),

– Visit several comparable properties in different neighborhoods,

– Return to selected properties at different times of day (light, noise, traffic),

– Systematically request the exact breakdown of areas (interior vs. terraces),

allows you to anchor your judgment much better in market reality.

Overvaluing the View at the Expense of Daily Comfort

The sea view is one of the most powerful machines for creating premium values in Monaco. But overpaying for an apartment for its view while neglecting actual sunlight, noise nuisance, layout, building quality, and parking convenience can backfire on the buyer, especially at resale.

Poor Negotiation: Either Too Much or Too Little

Negotiation in Monaco does not follow the same codes as elsewhere. On new developments and some ultra-prime assets, the margin is almost nonexistent: the price is the price. Conversely, on secondary or poorly positioned properties, the gap between listed price and final price can exceed 20%, or even 40 to 60% in extreme cases.

Two symmetrical errors dominate

Observation

– Presenting ultra-low offers without justification, which antagonize the seller and damage the buyer’s reputation with agencies,

– Not negotiating at all, for fear of “losing” the property, and accepting a starting price clearly disconnected from actual transactions.

The right approach is to rely on comparable recent sales (not just listed prices), adjust the offer based on the specific flaws of the property (works, lesser view, lack of parking, high fees), and argue factually. The best agents and notaries often have anonymized examples that help frame a realistic range.

Conclusion: Investing in Monaco, an Exercise in Precision

Real estate in Monaco is neither a speculative El Dorado nor a simple “comfort” investment. It is an ultra-prime market, structurally scarce, fiscally unique, and legally demanding, where every decision must be weighed carefully.

Conversely, by accepting the inherent logic of the Monaco market – capital preservation, long-term horizon, extreme selectivity, regulatory transparency – and surrounding yourself with seasoned professionals (lawyer, notary, specialized agent, international tax experts), it is possible to benefit from the remarkable market stability, its absence of systemic corrections in over fifty years, and the Principality’s tax attractiveness for profiles for whom it truly makes sense.

In this micro-market more than anywhere else, the winning investment is not the one made fastest, but the one best prepared.

Cyril Jarnias

Cyril Jarnias is an independent expert in international wealth management with over 20 years of experience. As an expatriate himself, he is dedicated to helping individuals and business leaders build, protect, and pass on their wealth with complete peace of mind.

On his website, cyriljarnias.com, he shares his expertise on international real estate, offshore company formation, and expatriation.

Thanks to his expertise, he offers sound advice to optimize his clients' wealth management. Cyril Jarnias is also recognized for his appearances in many prestigious media outlets such as BFM Business, les Français de l’étranger, Le Figaro, Les Echos, and Mieux vivre votre argent, where he shares his knowledge and know-how in wealth management.

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