Spain's inefficient homes face mandatory upgrades by 2030

Most of the housing stock fails to meet standards and must be upgraded

Can a European regulation remove your apartment from the market? The starting point is an uncomfortable estimate: most of Spain's real estate stock does not meet the energy efficiency requirements demanded by Europe and must be rehabilitated to obtain the required certificate. Some argue that much of the housing cannot be sold or rented without works, though this figure is not from any official register. The deadline is: 2030.

What Europe demands from housing from 2030

The framework is the European energy efficiency directives, which push the entire built environment toward a decent label and contained emissions. In the harshest version of the story circulating, from 2030, housing that does not reach the verified rating will be unable to be leased. The certificate is no longer an add-on to the folder: the notary requests it before signing. And the fine print in the Official State Gazette (BOE) —disposition 4279, published in issue 56 of 2024— opens the door to aid to finance these works, although anyone doing the math soon discovers that the subsidy covers only a small part of the gap.

There is a detail that irritates anyone who has gone through an inspection. If the Technical Building Inspection (ITE) is reviewed every ten years and Spain is still full of buildings that bypass it, what prevents energy certificates from being bypassed in the same way? The most repeated answer is not legal, but resigned: they will be bypassed.

How much does it cost to rehabilitate a home to pass the certificate

It depends on the starting point, and the Spanish starting point is poor. Changing windows, insulating the facade, replacing the boiler, updating air conditioning, sealing joints. The first bill that appears is for the certificate itself: around 100 euros in areas with little competition, pocket change that adds up. The second is no longer pocket change. Some place the floor of a new, efficient single-family home at 300,000 euros, a figure that excludes most from the equation. And then there is the monthly fee: a community with an elevator, central heating, and gardens that, according to the cited case, is already reaching 165 to 180 euros per month, before the energy surcharge.

Here, positions split in two. For some, the cost will eventually be passed on in the price or rent and paid by young people entering the market. For others, requiring renovation before selling is directly absurd: the buyer will do it to their liking, and a seller needing money cannot spend it before receiving it. Renovating before selling is wasted money, in short. And the tax suspicion arises: first, you pay tax on the work, then on the sale.

Those who already regret having rehabilitated

Energy efficiency has a fruta problem that does not stem from the regulation, but from the works. In a central area, a community installed a ventilated facade twelve years ago, one of those that costs a fortune. Today, the panels are falling off, everything must be redone, and neighbors are still paying the first special levy. The case is the best argument against mandatory rehabilitation, and it is not signed by someone who denies climate change, but by someone who knows those affected.

Added to this is material antiestéticar: insulations that burn and facades that turn a fire into a trap. Traditional construction also has defenders: good brick, fireproof mortar, aluminum with thermal break, and porcelain instead of drywall. Against this, technicians remember that a Passivhaus-style home is achievable with good joint sealing and an airtightness test that verifies 0.6 air renewals per hour of the standard.

Why is the energy certificate mixed with inheritance?

Because part of the analysis suspects the objective is not the climate. The circulating hypothesis suggests the regulation serves to tighten the market, push ownership toward renting, and put wealth transmission under suspicion. It includes a thesis—the end of inheritances and a sort of housing distribution based on individual behavior—that has no evidentiary backing and is nonetheless repeated insistently.

What some foresee is even more prosaic: public companies and crony concessions to enable housing with the proper label, and a precedent no one has forgotten, that of car labels, which started as informative and ended up deciding where you drive. Meanwhile, the underlying numbers remain. In 2019, the average Spaniard spent 40% of their income on rent. Those under 30 cannot buy or rent alone in any region. And there are 700,000 fewer unemancipated young people than in 2008.

And if demand falls, who pays for the renovation?

Then appears the uncomfortable counterpoint to alarmism. Population pyramids suggest that in two decades, internal demand could fall, and the only pressure supporting prices would be external, with construction at historic lows. Others respond that this does not comfort someone who must decide today between renovating or selling at a loss.

In the end, the efficient home everyone dreams of will have new windows, good insulation, and an impeccable certificate. All that will be missing is someone with 300,000 euros to enter it.