Interest in real estate investment in the province of Castellón is growing, particularly in the capital and its metropolitan area. This phenomenon is consolidating as a structural trend, driven by the residential pressure of large cities and the appeal of secondary markets offering greater return potential.
The investor profile is broadening. While previously the predominant figure was the small investor seeking properties under 100,000 euros for renovation and rental purposes, specialized operators are now looking to develop residential products for both investment and end-buyers, identifying a scarcity of supply and absorption capacity.
A report by the real estate investment platform PropHero highlights Almassora for a new residential development, identifying Castellón as a market with excellent profitability and liquidity indicators. The study analyzes 13 municipalities between Castellón and Plana Baixa Sur, with over 407,000 inhabitants, where the average gross rental yield reaches 9.23%, exceeding the national average by more than two points.
Market speed is another key factor. Properties in the studied area remain on the market for an average of 18 weeks, compared to over 33 in Spain. For rentals, a tenant is found in about 16 weeks, versus almost 25 nationwide. These figures reflect the provincial reality of homes selling in just a few days or weeks.
The Association of Real Estate Agencies of the Valencian Community (Asicval) had already noted that properties under 100,000 euros in Castellón were selling within two to three weeks. Now, this dynamic is being reflected in the analysis models of investment platforms.
The reduction in supply is a determining factor. The report estimates that the stock of rental housing in the analyzed municipalities has decreased by 54% in one year, nearly double the national decline. The supply of properties for sale has fallen by about 48%. This lower availability coincides with sustained residential demand driven by population growth and industrial activity.
The province closed 2025 with over 627,000 inhabitants, gaining around 12,400 residents in a year. The economy relies on sectors such as the ceramic industry, logistics, and port activity.
Almassora stands out as a representative case of this new provincial real estate cycle. Its proximity to Castellón, contained access prices, and limited new construction have made it a priority market for PropHero. This move aligns with a broader transformation of the residential market: in contrast to large capitals where the entry price limits profitability margins, investors are beginning to seek intermediate cities with growth potential.
