Resale vs New Build in Castellón: How the Extra Costs Compare

In Castellón, buyers often get as far as comparing asking prices between a resale apartment and a new-build unit, then discover that the final bill is shaped just as much by taxes and fees as by the purchase price itself. A resale home carries a regional transfer tax, while a new build adds VAT and a stamp duty instead, on top of notary, land registry, gestoría and valuation costs that apply either way.

For a non-resident buyer coming from the UK, these differences also interact with the mortgage: the bank will ask for proof of income, bank statements and details of existing debts from the UK, usually with a sworn translation, before it can confirm how much of the purchase it is willing to finance.

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.

What follows are measured, dated figures for Castellón (province) — who lives there, what homes are advertised for, how to get there and the climate — each one sourced. They help you build a realistic picture of Castellón (province) as you work out the budget for a Spanish mortgage.

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. The province of Castellón registers 118,810 residents of foreign nationality, about 19 out of every 100 people. That share is notable yet far from dominant, and it varies widely between towns within the province.

INE counted only 1,423 British nationals registered in the whole province of Castellón on 1 January 2025, a small number of compatriots. Remember that the padrón only reflects people living there most of the year, not second-home owners. Below are the main foreign nationalities registered in Castellón (province) as of 1 January 2025, taken from the figures INE publishes municipality by municipality.

For nationalities the census groups together rather than listing them individually, such as Germans, Italians, Dutch, Belgians or Scandinavians, we turn to the detailed INE register for Castellón province. Unlike the table above, this count dates from 1 January 2022, the most recent detailed edition.

Across the province of Castellón, 3,955 homes currently listed carry a median price of €1,740/m² and a median ticket of €179,000. These figures fall below the €3,135/m² median we see across the 130 towns we track nationwide, placing the province among the more affordable ones we follow. Among current adverts, the central half cluster between €1,230 and €2,370 per square metre; some properties are listed well below this band, others well above it.

In Castellón (province), the regional transfer tax rate of 9 % applied to the median asking price of €179,000 gives a tax bill of about €16,100, plus roughly €2,100 for notary, registry and gestoría charges. That puts the total near €18,300, money the mortgage will not cover. These are asking prices taken from adverts active on 2026-11-01, not confirmed sale prices. What a buyer actually pays is negotiated, and depends on the condition, exact location and orientation of each home.

The table below brings together the towns we track across Castellón (province), listing inhabitants, foreign residents per 100 people and median asking price per square metre, to show how much these markets differ.

INE's experimental statistic, based on listings from the main holiday-rental platforms, counted 6,990 holiday-let homes in Castellón (province) in 05/2026 (37,362 bed places), about 11 per 1,000 residents. That is a moderate presence, and tourist letting still requires a regional licence.

Castellón has a single commercial airport, Aeropuerto de Castellón (CDT); depending on where exactly in the province your property is located, an airport in a neighbouring province may actually sit closer to your door. The climate figures below were recorded in or near Castellón de la Plana, the provincial capital, and conditions elsewhere in the province, inland, at altitude or on other islands, can differ noticeably. With January averaging 10.6 °C and overnight lows around 5.8 °C, against an August mean of 25.6 °C and highs near 30.3 °C, winters are mild rather than warm. Checking the heating in any home is a sensible step. With about 467 mm of rain a year on roughly 46 days, rain is neither scarce nor abundant here. Annual sunshine here runs to around 2,755 hours. These figures are the official climate normals (1981-2010) from AEMET, Spain's state weather agency, at its Castelló - Almassora station, about 4 km away; conditions at the exact property can differ slightly, especially inland or at altitude.

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.

When you buy a resale home in Castellón, the main extra cost is the transfer tax, known in Spain as ITP. It is set by the regional government, not nationally, so the exact rate depends on where in Castellón the property sits and sometimes on the price bracket. This tax is paid once, shortly after completion, and your gestoría normally handles the filing.

Because ITP is calculated on the property's value rather than on a fixed scale, it is worth asking your adviser or notary for the current regional rate before you commit, since it can change from one year to the next and differs from one Spanish region to another.

A new-build purchase in Castellón is taxed differently: instead of ITP, you pay VAT at 10% on the price, plus a stamp duty that is also set regionally. Both are usually settled at completion, and your gestoría should confirm the exact stamp duty rate that applies in Castellón before you sign.

Because VAT and stamp duty are calculated on the full purchase price, buyers sometimes assume a new build is automatically more expensive than a resale home once tax is added. That is not always the case: the comparison depends on the resale property's ITP rate and on the new build's stamp duty rate, both of which vary.

Beyond transfer tax or VAT and stamp duty, every purchase in Castellón involves the same group of costs: notary fees for signing the deed, land registry fees for recording your ownership, gestoría fees for handling paperwork and filings, and a bank valuation if you are applying for a mortgage. None of these depend on whether the home is resale or new build, though the land registry can take longer to process at busy times.

For a non-resident buyer there is one more line to plan for: currency conversion. Since the United Kingdom uses the pound sterling rather than the euro, the exchange rate on the day you transfer funds can move the final amount you actually pay, so it is worth asking your bank or currency provider for a clear quote before completion.

Spanish banks usually ask non-resident buyers for a larger deposit than they would ask a resident, and the exact share depends on the bank, your country and your personal profile — it does not change because the property is resale rather than new build. Mortgage terms in Spain usually run until the borrower is around 70 to 75 years old, with fixed, variable (linked to Euribor) and mixed-rate options available.

At Colibrí Finances we compare more than 20 Spanish banks, prepare your file and translate what each one asks for, whether you are buying a resale home or reserving a new-build unit still under construction. The study is free and without obligation, and our fees are agreed in writing beforehand, and we support you all the way to signing.

If you are weighing a resale home against a new build in Castellón, ask for the exact regional transfer tax rate or the exact stamp duty rate in writing, since both affect your final budget more than most buyers expect. Also note that the Spanish Golden Visa route for property investors ended on 3 April 2025, so residence through a property purchase is no longer an option to plan around.

Spain and the United Kingdom have a double taxation agreement, and once you own property here you will need to file an annual non-resident income tax return (Modelo 210); a local tax adviser can confirm exactly how this interacts with what you report to HMRC.

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.