Housing crisis in Spain and Greece: where to invest without getting it wrong

Rents are skyrocketing on both sides of the Mediterranean. In Madrid, they climbed 15.3 percent in a single year. In Athens, even the most basic long-term rental is vanishing in favour of tourists. The housing crisis in Spain and Greece is reshaping two rental investment markets that appear to be polar opposites, yet share the same engine: demand that vastly outstrips supply. For an investor, this tension creates genuine opportunities. But you still need to know where to put your money, at what price, and under which tax regime. This article compares the two countries without sugar-coating anything, with the numbers to back it up.

Two southern countries, one shared housing shortage

Spain and Greece are living through a housing crisis that follows parallel paths. In both cases, demand for housing has exploded while supply stagnated, or even declined in the most sought-after urban centres.

In Spain, the shortfall is enormous. An estimated 1.2 million homes are missing to meet the population's real needs. In Madrid and Barcelona, annual demand sometimes exceeds double what the market manages to produce. The concrete result for households: the share of income spent on rent rose from 38 percent in 2019 to 50 percent in 2025. Half of a paycheque now goes towards housing. A threshold that has historically signalled acute social tension and fuelled political debate.

Greece presents a different picture in absolute figures but a similar mechanism. The national average rent hovers around 440 euros per month, a modest level compared to Western Europe. But in Athens, the pressure is intense. Rents reach roughly 14 euros per square metre in central districts. Local rental demand runs up against a supply drained by tourism and by years of underinvestment in construction.

What brings these two markets together is the structural imbalance. This is not a cyclical spike tied to a temporary economic cycle. The shortage is settling in for the long haul. For an investor, this gap between supply and demand is precisely what supports rents and secures occupancy rates. To see where this pressure is most acute across the continent, our map of the cities under pressure puts these dynamics into perspective.

There is, however, an important nuance. In Spain, property prices remain roughly 25 percent below their 2008 peak. This means an investor still combines a relatively accessible entry point with rental yield potential. In Greece, the price recovery is already well underway following the debt crisis. The macroeconomic picture therefore differs, even if the housing shortage is real on both sides.

What sent rents spiralling in Barcelona, Madrid and Athens

The surge in rents across these three cities is no accident. It stems from two forces that combine and amplify one another. The first empties the available rental stock. The second prevents it from being rebuilt. Understanding these two mechanisms is essential to assessing whether the tension will persist, and therefore whether the investment still makes sense.

Tourism and short-term rentals draining the long-term stock

The first culprit has been identified everywhere: short-term tourist rentals. In the centres of Barcelona, Madrid and Athens, thousands of apartments have left the long-term rental market to join short-term platforms, which are far more profitable per square metre.

The logic is compelling for a landlord. Renting by the night to tourists often brings in twice as much, sometimes more, than a standard annual lease. The supply aimed at local residents therefore shrinks mechanically. Fewer available homes, more applicants: rents rise.

Athens illustrates this phenomenon perfectly. Some central districts have emptied of their permanent residents in favour of a supply entirely geared towards visitors. It was this observation that prompted the authorities to act as early as 2025, as we will see later. Tourist pressure is not collateral damage. It is the main engine of the crisis in the most highly valued areas.

New construction unable to keep up with demand

The second factor operates on the side of new supply. Even if tourist housing were returned to the long-term market, it would not be enough. New construction simply cannot keep pace with demand.

In Spain, annual output of new housing remains well below the needs of the major metropolitan areas. Rising interest rates have stalled many projects, making developments less profitable for builders. The shortfall of 1.2 million homes is the direct expression of this gap accumulated over years.

The problem is structural. Planning timelines, the cost of land in city centres and the scarcity of buildable plots limit the ability to respond quickly. In short, the shortage will not be resolved in a year or two. For an investor, this means that the pressure on rents is highly likely to hold up over the medium term, which supports the case for rental investment in these areas. This same new construction collapse is playing out across Europe and directly reshapes what landlords can expect from their rents.

Gross and net yields: what the numbers really reveal

Advertised yields are the first argument brandished to promote a market. But they deserve a closer look, because the difference between gross and net changes everything in the final decision.

In Spain, gross rental yield generally falls within a range of 3 to 6 percent depending on the city and segment. Some estimates push it as high as 5 to 7 percent in favourable configurations. Major metropolitan areas like Madrid and Barcelona tend towards the lower end of the range, because purchase prices are high there. Secondary cities or tourist rentals offer higher yields, at the cost of more intensive management.

In Greece, gross yield on long-term rentals sits around 6 percent per year. An attractive figure on paper, driven by purchase prices that remain contained in several cities. Short-term rentals can go higher, but they now run up against a stricter regulatory framework that erodes this advantage.

The classic trap is to stop at the gross yield. That figure ignores everything that reduces real income: taxation, service charges, maintenance, rental void periods, management and any agency fees. Once these items are deducted, the gap between gross and net can be considerable, sometimes two to three percentage points.

It is precisely on the net figure that the comparison becomes tricky. Reliable and recent net data remain scarce for both markets. A gross yield of 6 percent in Greece may prove less advantageous than a gross yield of 5 percent in Spain depending on the tax structure that applies to the investor, as we are about to see.

Remember one simple rule. A gross yield only has comparative value if you know the tax regime, the level of charges and the expected occupancy rate. Two properties advertising the same gross figure can produce radically different net returns. Before choosing a market, always demand a net projection, line by line. That is the only honest basis for a decision. If you want to understand exactly how taxes reshape the yield in your pocket, the gap between the advertised figure and what you actually keep is often larger than expected.

Taxation for non-residents: the real gap between the two markets

Taxation is often the factor that tips a decision, and this is where the gap between the two countries becomes concrete for a foreign investor.

Let us start with Spain, whose regime is the best documented. Treatment depends directly on your place of tax residence. A non-resident based in the European Union or the European Economic Area can deduct certain charges from the rents received before taxation. This advantage significantly reduces the taxable base and improves the net yield.

By contrast, a non-resident based outside the European Union faces a much heavier regime. The applicable rate reaches 24 percent on gross income, with no deduction of charges possible. This distinction is major. For an investor residing within the European Union, Spain remains manageable from a tax standpoint. For an investor based outside the EU, the bill rises sharply.

This gap illustrates a principle that is often overlooked: nationality matters less than tax residence. The same property, the same rent, but two investors with different residences will obtain very different net yields.

On the Greek side, the situation is harder to pin down with precision. Greece is promoting a tax incentive designed to redirect supply from short-term to long-term rentals. Homes switched to long-term letting could benefit from an exemption on rental income tax for three years. If this scheme is confirmed and applies to your situation, it represents a powerful lever for net yield, especially compared to the Spanish regime for non-residents outside the EU.

That said, this point warrants thorough verification with an official Greek tax source or a recognised firm before any commitment. The exact terms, eligibility conditions and precise duration must be confirmed on a case-by-case basis. Never base an investment decision on an unverified tax incentive.

The practical conclusion is clear. Before buying, have your actual tax liability calculated by a local professional, based on your tax residence and the type of rental targeted. It is this projection, not the advertised gross yield, that determines the effective profitability of your investment.

Rent regulation: where political risk weighs heaviest

Investing in rental property also means accepting exposure to regulatory risk. When a housing crisis becomes a burning political issue, governments legislate, sometimes quickly, sometimes in ways unfavourable to landlords. This risk must factor into your calculation.

In Spain, social pressure is strong. With half of household income absorbed by rent, the housing question has become central to public debate. The country has adopted a legal framework aimed at capping rents in high-demand areas, with the option for municipalities to limit increases. The actual application of these measures nonetheless remains uneven across regions and cities. Some local authorities have activated these mechanisms, others have not. This uncertainty over effective implementation is in itself a risk factor to watch closely before buying in a major Spanish metropolitan area.

Greece has taken a different approach, targeted at short-term rentals. Since 1 January 2025, Athens has restricted new short-term furnished rentals in three heavily touristed central districts. The aim is to return homes to the long-term market and ease the pressure on residents.

The country went a step further with a national law that came into force on 1 October 2025. It imposes minimum standards on all properties rented short-term: natural lighting, ventilation, liability insurance, fire safety measures, a ban on renting basements and a minimum dwelling size. Fines for non-compliance range from 5,000 to 20,000 euros. Joint inspections by the Ministry of Tourism and the tax administration are planned, including on-site audits.

The message is unmistakable. An investor who was betting exclusively on tourist rentals in Greece must rethink their model. Short-term profitability is now regulated, monitored and potentially restricted depending on location. Conversely, the country is actively pushing towards long-term rentals, notably through its tax incentive.

In summary, Spanish political risk weighs mainly on rent caps in high-demand areas. Greek risk weighs mainly on short-term rentals. Your strategy should align with these constraints rather than suffer them.

Spain or Greece: the verdict based on your investor profile

There is no good market in absolute terms. There is a market suited to your profile, your tax residence and your appetite for risk. Here is how to decide based on your situation.

If you are a tax resident in the European Union and you are seeking stability, Spain offers a balanced profile. The tax regime allows you to deduct charges, which protects your net yield. With prices still below the 2008 peak, the entry point remains reasonable in several cities. The shortage of 1.2 million homes durably supports rental demand. The main point of caution remains rent caps in high-demand areas, which must be checked city by city.

If you favour a high gross yield and are prepared to adapt to the regulatory framework, Greece is worth examining. The gross yield of around 6 percent on long-term rentals is attractive, and the tax incentive, if confirmed, can significantly boost the net figure. The trade-off is a more constrained environment for short-term rentals and a greater need for tax verification, in the absence of data as transparent as in Spain.

If you reside outside the European Union, the equation changes radically. The Spanish rate of 24 percent on gross income with no deduction sharply erodes profitability. In that case, the Greek orientation towards long-term rentals, potentially exempt for three years, may become more attractive. But this conclusion depends entirely on confirmation of the Greek tax scheme applicable to your case.

If you are looking above all for liquidity and simplicity, neither market in direct purchase will fully suit you. Buying a property abroad involves high transaction costs, remote management, complex taxation and a slow resale. These constraints weigh heavily, whatever the advertised yield.

The verdict therefore comes down to a single phrase. Spain suits the European investor who wants clarity and a measured entry point. Greece appeals to those aiming for a higher gross yield who accept a shifting framework. In both cases, direct purchase remains a heavy burden to carry alone.

Putting your savings into these markets without buying directly

Buying an apartment in Madrid or Athens from abroad is an uphill battle. You have to mobilise substantial capital, deal with a foreign notary, open a local bank account, find a trustworthy manager, navigate a tax system you barely master and accept a slow, uncertain resale. For most savers, these barriers cancel out the appeal of the yield.

Yet there are ways to gain exposure to these markets without shouldering the full weight. Listed property companies specialising in Southern European real estate offer indirect exposure, but they track stock market volatility and do not faithfully reflect the performance of a specific asset. Diversified property funds offer pooling, but dilute your choice within a portfolio over which you have no individual visibility.

Another approach is gaining ground: fractional investment in real, identified property assets. The principle is to invest a modest amount in a specific operation, where you know in advance the property involved, the duration and the target return. You earn income linked to the rents distributed or to the operation's margins, without bearing alone the weight of a full purchase abroad.

This is exactly the model Shelters offers. The platform gives access to concrete property operations through digital bonds backed by physical assets. Each operation is presented with the identified property, the exact duration and the target return, within a range that runs from 8 to 15 percent depending on the type. You invest from small amounts, from any device, after quick registration and identity verification. A liquidity objective via a secondary market is planned, which directly addresses the problem of slow resale in direct purchase.

Another key difference: Shelters systematically co-invests in every project offered. The platform takes a stake alongside you, which aligns its interests with yours. It does more than simply act as an intermediary.

The housing crisis in Spain and Greece creates genuine rental investment opportunities, driven by a lasting shortage and gross yields higher than those of many Western European markets. But direct purchase remains complex, fraught with tax pitfalls and illiquid. Before committing, always compare net yields, verify your real tax regime and gauge the regulatory risk of each market. And if you want to capture this momentum without the constraints of direct ownership, explore the operations available on Shelters to invest in a simple, transparent and fractional way.