# Housing and transport: commuter rail that brings cheap land closer

> Commuter rail lowers housing costs when it puts cheap land within an hour of the jobs and when homes get built around the new stations. A radical-centre plan would set up metropolitan rail-and-housing companies, on Copenhagen's Ørestad model, that secure land along Cercanías and Rodalies lines before the upgrade is announced, let builders compete for dense station plots, keep the protected-housing share Spanish law already requires, and repay the line from the land value it creates. Success is measured by how many jobs a household can reach within an hour.

- URL: https://www.radicalcentre.eu/en/articles/housing-and-transport-commuter-rail-cheap-land
- Language: en
- Publisher: radical centre / centro radical
- Published: 2026-10-30
- Topic: Housing
- Author: radical centre
- Licence: CC BY 4.0

## Key points

- Alain Bertaud treats a city as a labour market: the planner's task is to keep commutes short so that workers can reach as many jobs as possible.
- Copenhagen paid for its first metro line largely through the Ørestad Development Corporation, which sold land whose value rose with the metro and rezoning.
- Société du Grand Paris planned about 8,000 homes, 20% of them social, in 68 new station quarters of the Grand Paris Express by 2030.
- Spain is spending heavily on Cercanías: €1,350 million on Madrid's C-5 line and more than €6,300 million under the Rodalies plan to 2030.
- Spanish law already lets councils take 5–15% of buildable floor space and reserves 40% of new residential floor space for protected housing; station quarters should use both in full.

Yesterday's [first part of our housing exercise](/en/articles/exercise-housing-25-percent-cheaper-build-more-faster) ended with a move we only sketched: lay commuter rail that brings cheaper land within reach of the jobs, and recover the cost from the value the works create. This piece fills it in. It is a radical-centre proposal for Spain's Cercanías and Rodalies, built on two books from this week's reading list and on Copenhagen and Paris.

Start with Alain Bertaud. In *Order without Design* he treats a city as a labour market. M. Nolan Gray, reviewing the book in City Journal, puts the consequence plainly: people will travel well beyond their own neighbourhood for work, so the planner's job is to allocate scarce road and rail space to keep commutes short. Our [explainer on Bertaud](/en/articles/alain-bertaud-order-without-design-explained) goes further into the book.

Seen this way, a commuter line is housing policy. Land an hour and a half from Madrid's jobs is cheap because hardly anyone can live there and keep their job. Put a fast, frequent train on it and that land joins the labour market. Each household that can now live there and still get to work is one household fewer bidding for a flat in the centre.

Edward Glaeser adds the condition. In *Triumph of the City* he makes a forceful case for density and for letting successful places build, and, as a review in Governing reports, he wants public policy to help poor people wherever they choose to live. For rail, that means two things. Lines go where the jobs are, which in Spain means the big metropolitan areas. And the stations get dense housing around them, because a train to a field of detached houses or a protected landscape does little for the people priced out of the city. Our piece on [Glaeser](/en/articles/edward-glaeser-triumph-of-the-city-explained) covers his argument in full.

## What Copenhagen and Paris did

Copenhagen is the clearest case of rail and land planned as one project. In 1992 the Danish Parliament passed the Ørestad Act, which set up a development corporation to build a new district on about 1.5 km² of former military training ground, together with a metro to serve it. According to a case study by the Eno Center for Transportation, the land belonged 55% to the City of Copenhagen and 45% to the Danish Ministry of Finance. The corporation borrowed at low interest with a state guarantee, against future fares and land sales. The metro and the rezoning raised the value of the land, the corporation sold plots to developers, and land sales and fares serviced the loans. The first lines opened in 2002 and were completed in 2007, with 22 stations. That year the transport and development arms were split into Metroselskabet and the CPH City & Port Development Corporation. Eno counts this as a rare case of value capture on a transit project of that size.

Paris is doing it at a larger scale and with more mixed results so far. The Grand Paris Express is building new automated lines around the capital, and in November 2022 the Société du Grand Paris announced that about 8,000 homes would be built in its 68 new station quarters by 2030, around 20% of them social and 10% intermediate, as Batiweb reported. The company holds about a million square metres of buildable space on its own land. The SGP itself acknowledged that new transport sets off a bidding war on prices, and the mayor of Bagneux answered with a charter for developers that limits the sale price of new homes.

The lesson from both: the authority that builds the line should hold land around the stations before the line raises its value. Copenhagen did, and paid for its metro. Paris is catching up plot by plot.

## A plan for Cercanías and Rodalies

Spain is spending real money on commuter rail. In March 2026 the transport ministry presented €1,350 million to modernise Madrid's C-5, a line used by around a million people and carrying 29% of all trips on the Madrid Cercanías network. The plan buys 35 new trains and promises 60% more capacity. In Catalonia, the Rodalies plan to 2030 foresees more than €6,300 million, and in January 2026 the state and the Generalitat signed up a new company, Rodalies de Catalunya, to run the service, starting with the Maresme line. Most of this money goes to repairing and modernising lines that people already use, which is the right first call.

What is missing is any link to housing. The C-5 will have 60% more capacity, and nothing in the plan says where the homes for the extra passengers will be built. So here is the proposal.

**A rail-and-housing company for each big metropolitan area.** Owned by the state, the region and the councils, on the Ørestad model, and attached to the metropolitan housing compacts we proposed in part one. It borrows with a state guarantee to extend or upgrade lines, and it secures land around the new or improved stations at rural or current-use prices before the project is announced. Spanish land law gives it tools for this. The public administration already receives between 5% and 15% of the average buildable floor space in new developments, up to 20% where land values are unusually high, and 40% of the residential floor space on newly urbanised land must be reserved for protected housing.

**Dense station quarters, built by right.** Within walking distance of each station the company plans streets and plots for flats, shops and offices, and the plan comes with permits by right, so a builder whose project fits it can start straight away. Plots go to competing builders, cooperatives and limited-profit housing companies by tender, on price and delivery dates.

**The line is paid for by the land.** Sales and long leases of plots repay the loans. A new line that cannot cover a good part of its own cost from the land it opens up should go back to the drawing board. Maintenance and safety stay with the state budget, across the whole network, because a commuter system that breaks down raises nobody's land values.

**Judge it by jobs within reach.** Bertaud's labour market gives the yardstick. Each compact publishes how many jobs a resident of each station quarter can reach within an hour, before and after, and the company's managers are judged on that number and on homes completed.

The Rodalies transfer is the place to try this first. The new company already brings the Generalitat and Renfe together; the Generalitat also plans land and housing in Catalonia. Putting station-quarter planning into the same hands as the service is a short step. Madrid, with the C-5 works under way and a regional government that controls planning, can do the same along the corridor to Móstoles and Fuenlabrada.

One warning from the Copenhagen case studies deserves a place in the statutes. The Global Infrastructure Hub notes that a financial crisis can cut land values and investors' appetite just when the loans fall due, and Spain learned in 2008 what that looks like. So the company sells plots steadily over the years, keeps a share on long leases that bring in rent through the cycle, and holds the state guarantee in reserve for bad years. The protected homes in each station quarter give it a floor of demand that does not depend on the market at all, which is the public housing side of the plan doing financial work for the rail side.

## FAQ

### How does commuter rail make housing cheaper?

A fast, frequent line brings land that was too far from the jobs within an acceptable commute. That land is cheaper, and once homes are built on it the whole metropolitan market gets more supply. The line has to come with permission to build densely around its stations, or the gain goes into the price of existing homes.

### What is land value capture?

Recovering part of the rise in land value that public investment creates and using it to pay for that investment. Copenhagen did it by having a public company own the land around the new metro, rezone it, sell it and repay the metro's loans with the proceeds.

### Who should pay for new Cercanías lines in Spain?

The state should keep paying for maintenance and safety across the network. New lines and big capacity upgrades should be paid for in large part by the land they make valuable, through a public company that holds that land and sells or leases it to builders.

## Sources

- [Cities As Labor Markets (review of Order without Design)](https://www.city-journal.org/alain-bertaud-urban-planning-markets), City Journal (2019)
- [The Triumph of the City](https://www.governing.com/archive/The-Triumph-of-the-City.html), Governing (2011)
- [Copenhagen case study](https://projectdelivery.enotrans.org/case-studies/copenhagen/), Eno Center for Transportation (2021)
- [Des logements sociaux vont être construits autour des gares du Grand Paris Express](https://www.batiweb.com/actualites/urbanisme/des-logements-sociaux-vont-etre-construits-autour-des-gares-du-grand-paris-express-41312), Batiweb (2022)
- [Óscar Puente presenta una inversión de 1.350 millones de euros para modernizar la C-5 de Cercanías Madrid](https://www.lamoncloa.gob.es/serviciosdeprensa/notasprensa/transportes-movilidad-sostenible/paginas/2026/040326-puente-inversion-c5-cercanias-madrid.aspx), La Moncloa (2026)
- [Con la empresa de Rodalies de Catalunya acercamos la gestión a las personas y al territorio](https://www.lamoncloa.gob.es/serviciosdeprensa/notasprensa/transportes-movilidad-sostenible/Paginas/2026/120126-puente-rodalies-catalunya.aspx), La Moncloa (2026)