In the 30 May 2026 snapshot of asking prices for Spanish apartments, unusual yield signals are heavily skewed toward the high-yield side. That makes this cut useful for investors screening for potential mispricing, but it also underlines a basic market pattern: unusually high gross yields can reflect either comparatively low entry prices, comparatively strong rents, or a mix of both, while unusually low yields often sit in markets where sale prices are carrying a premium.

Spain’s outlier map is mostly a high-yield story

In the 30 May 2026 snapshot, 16 of the 17 listed apartment markets fall into the high-yield outlier band, leaving only one city in the low-yield camp. That imbalance matters because outlier screens are not showing a balanced national ranking here; they are isolating the places where the rent-to-price relationship looks most stretched relative to the wider market.

At the top of the list, Santa Coloma de Gramenet posts a gross yield of 15.57%, with a median asking sale price of €178,222 and median asking rent of €2,313/month. Badalona follows at 11.58%, with €170,898 on the sale side and €1,649/month on the rent side. L'Hospitalet de Llobregat comes next at 9.92%, again with a €178,222 median asking sale price and €1,474/month median asking rent.

Below those leaders, the high-yield cluster remains broad rather than concentrated in one price bracket. Castelldefels reaches 9.56% on a much higher €319,823 sale median and €2,548/month rent median, while Sabadell records 9.46% at €175,781 and €1,386/month. Castell d'Aro, Platja d'Aro i s'Agaró sits at 9.20% with €324,706 and €2,490/month, showing that high outlier status is not confined to lower-ticket apartment markets.

A second tier still clears 7% comfortably. El Ejido records 9.03%, Esplugues de Llobregat 8.93%, Mazarrón 8.11%, Palamós 8.00%, Linares 7.98%, Terrassa 7.95%, Tarragona 7.58%, Murcia 7.57%, Almería 7.43%, and Sagunto / Sagunt 7.23%.

The strongest outliers cluster around Barcelona’s orbit

In the 30 May 2026 snapshot, several of the most extreme high-yield readings sit in and around the Barcelona metropolitan area. For readers, that is a reminder that yield outliers do not have to be peripheral markets; they can also appear in dense urban belts where apartment stock is deep and pricing differences between municipalities remain pronounced.

Santa Coloma de Gramenet leads the entire list at 15.57%. Badalona ranks second at 11.58%, and L'Hospitalet de Llobregat ranks third at 9.92%. Esplugues de Llobregat also appears at 8.93%, while Sabadell posts 9.46%, Terrassa 7.95%, and Castelldefels 9.56%.

The pricing spread inside this cluster is notable. Median asking sale prices run from €170,898 in Badalona and €170,898 in Terrassa to €319,823 in Castelldefels and €300,292 in Esplugues de Llobregat. On the rent side, medians range from €1,132/month in Terrassa to €2,548/month in Castelldefels.

That combination is why gross yield screens often surface smaller or mid-priced apartments markets near large employment centres: when sale prices do not rise in lockstep with rents, the yield ratio can look unusually strong. The data here does not prove why each municipality lands where it does, but it clearly shows that the outlier phenomenon is not limited to Spain’s cheapest apartment markets.

High yield is appearing in both large cities and small resort towns

In the 30 May 2026 snapshot, the high-yield list spans municipalities with populations from 12,982 to 479,405. For market watchers, that breadth is important because it shows the outlier screen is picking up very different local market types rather than one uniform category.

At the large-city end, Murcia has a population of 479,405 and a gross yield of 7.57%. L'Hospitalet de Llobregat stands at 289,510 people with 9.92%, Terrassa at 233,270 with 7.95%, Badalona at 231,542 with 11.58%, Sabadell at 225,368 with 9.46%, and Almería at 205,468 with 7.43%.

At the smaller end, Castell d'Aro, Platja d'Aro i s'Agaró has a population of 12,982 and still records 9.20%. Palamós, with 18,933 residents, posts 8.00%, while Mazarrón, with 35,449, reaches 8.11%. Esplugues de Llobregat, though part of the Barcelona area, has 48,221 residents and still appears as a high-yield outlier at 8.93%.

This mix matters because investors often assume that unusually high gross yields are mainly a feature of lower-demand small towns. The list does not support that simple reading. Instead, it includes dense urban municipalities, regional capitals, commuter belts, and smaller coastal locations in the same outlier band.

A relevant media backdrop appears in "Pepe Álvarez (UGT): “No hay convenio que pueda aguantar la subida de la vivienda”" from murciaeconomia.com, published on 2026-04-29, which coincides with Murcia appearing on this high-yield list at 7.57% alongside a median asking rent of €878/month and median asking sale price of €139,159.

San Sebastián stands alone as the premium low-yield outlier

In the 30 May 2026 snapshot, San Sebastián - Donostia is the only apartment market in the low-yield outlier band. That is the clearest premium-market signal in the dataset, and it fits a common pattern in high-demand cities where sale prices become so elevated that gross yields compress even when rents are substantial in cash terms.

San Sebastián records a gross yield of 2.74%, far below the high-yield group’s readings. Its median asking sale price is €593,260, the highest figure in the list by a wide margin, while median asking rent stands at €1,357/month. No other city in this outlier set comes close on the sale side: the next-highest asking sale prices are €324,706 in Castell d'Aro, Platja d'Aro i s'Agaró, €319,823 in Castelldefels, and €314,941 in Palamós.

That makes San Sebastián the clearest example here of a market where investors screening purely for gross income return would see a very different profile from buyers prioritising wealth preservation, prestige, or prime-location exposure. A low-yield outlier does not automatically mean overvaluation, just as a high-yield outlier does not automatically mean a bargain; it means the price-to-rent relationship is unusually tilted in one direction.

The spread between outliers is exceptionally wide

In the 30 May 2026 snapshot, apartment yields in the outlier set run from 15.57% down to 2.74%. For readers using yield as a first-pass filter, that wide spread is the main takeaway: Spain’s apartment market is not producing one national return profile but a very uneven local map.

The upper end is led by Santa Coloma de Gramenet at 15.57%, followed by Badalona at 11.58%. A broad middle of high-yield outliers then ranges from 9.92% in L'Hospitalet de Llobregat to 7.23% in Sagunto / Sagunt. Only after that long high-yield tail does the list drop to San Sebastián’s 2.74%.

The associated asking prices are just as varied. Linares has the lowest median asking sale price in the set at €80,566, while San Sebastián has the highest at €593,260. On the rent side, Linares is lowest at €536/month, while Castelldefels is highest at €2,548/month.

For practical screening, that means a headline yield figure should be read together with the city’s price level and market type. Gross yield is useful precisely because it surfaces unusual combinations, but those combinations can point to very different kinds of market positioning across Spain’s apartment landscape.

Explore further

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Published: April 28, 2026