Housing supply and the limits of the market: Spain’s path to an investable social stock
Affordable housing
Fecha: julio 2026
Enrique Martín and Irene Peña
SEFO, Spanish and International Economic & Financial Outlook, V. 15 N.º 4 (July 2026)
Spain’s housing crisis reflects a structural supply-demand imbalance that has deepened over the past decade, pushing not only vulnerable households but middleincome groups out of urban rental and purchase markets. Net investment in social housing has been virtually stagnant since 2013, with much of the earlier public effort eroded as subsidised homes were deregulated back into the open market. Private developers have retreated from the affordable segment because regulated rents and price caps routinely fail to cover construction and land costs, producing a funding gap that, absent public compensation, makes investment unviable regardless of demand. The decisive regulatory shift comes from the revised EU SGEI Decision of late 2025, which formally designates affordable housing as a service of general economic interest, allowing public authorities to compensate developers without prior Commission notification, provided compensation does not exceed net costs plus a reasonable return. Activating this framework requires Spanish authorities to define public service obligations, model funding gaps precisely, and establish transparent compensation parameters, disciplines that would sharpen housing policy while giving patient private capital the legal certainty it has lacked. The framework’s main virtue is that it integrates available instruments, allowing land transfers, subsidies, and construction grants from different levels of government to be bundled within a single project without triggering state aid accumulation rules.