A Lisbon Teacher in 2035: When Annual Rent Exceeds Annual Salary

Portugal's Housing Crisis Is Not News

Portugal's housing crisis is no longer news. Lisbon rents have more than doubled since 2018. Teachers commute 90 minutes from towns they can afford to schools in the capital they cannot. Banco de Portugal now flags housing affordability as the country's most pressing macro risk.

So I ran Portugal through WorldSim to 2035. Average path, no extreme tilts, 5,000 Monte Carlo trajectories across 26 KPIs connected by 100+ structural coupling rules. 24 fired in this run, 12 positive and 12 negative.

The Country-Level Picture

• GDP per capita: $31,415 → $33,101 by 2035 (+5% over a decade).
• Unemployment: 6.5% → 5.4%.
• Renewable share: rises to 44%.
• Fertility: 1.44 → 1.53.
• Housing rent index: 112 → 153 (+37%).
• Price-to-income: 11.6x → 16.9x.

That country-level snapshot looks fine on the headline indicators. Some growth, some demographic recovery, an energy transition on track. The pressure is hidden in the coupling rules.

What the Coupling Rules Did

Twelve negative rules attacked the growth side:

• Migration Pressure drove rents and price-to-rent.
• Solar Integration Cost nudged household electricity higher.
• Tax Wedge Employment Drag compressed real wages.
• Ageing Drag shaved potential output.

Twelve positive rules pulled the other way: the unemployment fall, the renewable rise, the fertility uptick, R&D climbing to 1.90% of GDP, net migration positive. The total cancels to a 5% decade GDP increase.

The Personal Layer

This is where the country-level picture stops working. WorldSim's Personal Mode takes the country baseline and projects a specific household.

The household: a Lisbon public-school teacher, no spouse income, paying market rent.

• Teacher salary: €21,600 → €22,500 by 2035 (+4%).
• Real purchasing power loss: −28% (after compounded inflation).
• Median Lisbon rent in 2035: €2,190/month.
• Annual rent / teacher income: 117%.
• Teacher's personal price-to-income: 22.8x.

Annual rent exceeds annual salary. Not for a low-wage worker. For a teacher. That is the labour-market failure.

The Question

A country where GDP grows 5% over a decade, rents grow 37%, and the people teaching the next generation cannot afford to live in the capital where they teach.

At what point does that stop being a structural curiosity and start being a labour-market failure?