Buying a Property with Existing Tenants in Castellón

Landlords sell tenanted homes for all sorts of reasons — they want to release equity, they are retiring from the rental business, or the property forms part of a wider portfolio being wound down. For a buyer, an occupied property in Castellón can mean immediate rental income and a tenant who already knows the home, but it also means stepping into a legal relationship you did not create.

Spanish tenancy law generally protects sitting tenants when a property changes hands, so the first task before any offer is understanding the contract you would be inheriting, not just the bricks and mortar.

Castellón province lies along the northern Costa del Azahar, offering a coastline with towns such as Peñíscola alongside inland mountainous areas. It tends to appeal to buyers seeking a quieter, less developed coastal environment compared to areas further south, including those interested in traditional Spanish towns and countryside.

The region is generally accessed via Valencia or Castellón airports, with more limited direct international flight options than larger hubs. Property types include coastal apartments, traditional village houses, and rural fincas, with activity increasing during the summer tourist season.

This section sets out dated, sourced figures for Castellón (province) — residents, advertised prices, access and climate — so you can see the place as it is now. They help you judge, realistically, whether Castellón (province) suits what you have in mind, whether living there, holidaying or renting it out.

On 1 January 2025 the INE recorded 627,620 residents across the entire province of Castellón, a figure that includes every municipality, not just the capital that shares its name. These official population data set the context for the local market figures below. Across the province of Castellón, 118,810 residents carry a foreign nationality, near 19 of every 100. This is a solid but moderate presence, one that differs a great deal from town to town across the province.

According to INE, only 1,423 British nationals were registered across the province of Castellón as of 1 January 2025. That low figure reflects the padrón's focus on year-round residents, excluding owners who use a property there only part-time. The following table shows the leading foreign nationalities registered in Castellón (province) on 1 January 2025, according to the municipal-level data INE makes available.

A further table sets out nationalities not broken down above, among them Germans, Italians, Dutch, Belgians and Scandinavians, registered throughout Castellón province. Unlike that earlier table, this one uses data from 1 January 2022, the latest edition with full nationality detail.

In our own price bank, the 3,955 homes currently advertised for sale across the province of Castellón show a median asking price of €1,740/m² and a median ticket of €179,000. Both sit below the €3,135/m² median across the 130 towns we track across Spain, making the province one of the more affordable among them. Prices vary considerably from one listing to the next, though the bulk of the market, its middle half, falls between €1,230 and €2,370 per square metre.

On the median asking price in Castellón (province) of €179,000, transfer tax on a resale home at the regional rate of 9 % comes to about €16,100, plus roughly €2,100 for notary, land registry and gestoría. That brings the extra amount a buyer needs on top of the price to about €18,300, money that has to come from savings rather than the mortgage. The figures reflect asking prices in listings live on 2026-11-01, rather than prices actually paid. Final amounts are agreed through negotiation and vary with the state, location and orientation of each property.

Below is a comparison of the towns we follow in Castellón, covering inhabitants, foreign residents per 100 inhabitants and median asking prices per square metre across the province.

In 05/2026, Castellón (province) had an estimated 6,990 tourist homes according to INE's experimental platform-based statistic, equivalent to 37,362 bed places and roughly 11 per 1,000 residents. The level is moderate, though letting a home to tourists still needs a regional licence. According to the Ministry of Housing's reference system, the median rent for a flat in Castellón (province) under long-term contracts in 2024 was €440 a month, from 29,530 tax-declared rentals. It is a past figure for long-term lets, not a forecast or holiday-let income, and rents can rise or fall. According to the same official data, the middle half of long-term rental flats cost between €350 and €550 a month.

The only commercial airport within the province of Castellón is Aeropuerto de Castellón (CDT), so it is worth checking in advance whether it operates in the season you plan to travel, since schedules can vary through the year. These weather readings come from Castellón de la Plana, the capital of the province, so inland areas, higher ground or other islands within the same province can show noticeably different conditions. The mean temperature in January is 10.6 °C (average daily minimum 5.8 °C) and in August 25.6 °C (average daily maximum 30.3 °C), a cool-mild winter pattern. It is worth confirming how any property is heated before buying. Annual rainfall sits around 467 mm, falling on roughly 46 days, neither particularly dry nor wet. The area records about 2,755 hours of sunshine a year. Climate data come from AEMET's 1981-2010 normals, recorded at its Castelló - Almassora station around 4 km away; the actual spot may vary a little, particularly further inland or higher up.

In the twelve months to 07/2026, 14,098 homes changed hands in the province of Castellón, INE figures show. Such activity tends to bring more reference prices and a larger selection for anyone searching. The figures above cover the whole province of Castellón, but they vary widely from town to town and from property to property. Share what you are searching for and we can review the details with you.

The transfer tax on a resale home is set by each Spanish region. In Castellón the general rate is 9 %, and on top of it come notary, land registry and gestoría (roughly one more percent). On a new build you pay 10 % VAT plus stamp duty instead of the transfer tax. This money is not lent by the bank.

Under Spanish law, selling a rented home does not usually end the lease. The new owner steps into the previous landlord's position by operation of law, and the tenant keeps occupying the property under the agreed terms until the contract runs its course or is properly terminated. You cannot simply ask a sitting tenant to leave because the property has changed hands.

There are limited situations, tied to whether the lease was registered at the Land Registry and when it was signed, where a buyer may not be bound in the same way. These exceptions are narrow and fact-specific, so treat continuity as the default and have your lawyer confirm the exact position in writing before you sign anything.

A tenanted sale should come with a paper trail. Ask the seller's agent for the signed lease, proof that the deposit was lodged with the relevant regional body, and recent evidence that rent has been paid on time. A gap in any of these should slow you down, not speed you up.

Alongside the property documents, UK buyers typically need proof of income such as a recent P60 and payslips, a last filed Self Assessment tax return, bank statements from the last three to six months, evidence of any existing loans or mortgage commitments, and a valid passport or national identity document. A lawyer coordinates these with the notary and bank so the purchase, tenanted or not, proceeds in the usual way.

Spain and the United Kingdom have a double taxation agreement, and a local tax adviser should confirm how rental income collected from an existing tenant, or any future gain, must be declared in Spain and reported to HMRC. As the United Kingdom is no longer an EU member state, British buyers can stay up to 90 days in any 180-day period without a visa, so plan viewing trips and completion dates with that limit in mind. The Golden Visa route for property investors ended on 3 April 2025 and is not an option for residence planning.

Spain is a relatively short flight away from most UK airports, making regular visits to a Spanish property straightforward for owners based in Britain. Many British buyers are drawn to Spain for its climate, coastal lifestyle and established expatriate communities. One practical point to bear in mind is that Spanish inheritance law differs from UK rules, so it is worth taking specific advice on how it may affect the property and one's estate. Currency movements between sterling and the euro can also affect the overall cost of purchase and ongoing expenses.

Spain and the United Kingdom have a double taxation agreement in place, and a local tax adviser should confirm how rental income or gains from Spanish property must be declared and reported to HMRC.

As the United Kingdom is no longer an EU member state, British citizens may stay in Spain for up to 90 days in any 180-day period without a visa, and must apply for a visa or residence permit for longer stays.

Since the United Kingdom uses the pound sterling (GBP) rather than the euro, buyers should factor in exchange-rate movements and currency conversion costs when paying for a property or transferring funds to Spain.