Half the land area of Boston, a quarter of NYC, and 15% of San Francisco were raised from the sea before 1970.
Since then, land values have grown by 30x but land reclamation has ground to a halt.
This failure follows the spread environmental law around the world rather than any geographic, technological, or economic constraint.
Thus, our lack of land reclamation and the severe land constraints in our most important cities are self-imposed and avoidable. We should make more land!
worksinprogress.co/issue/why…
Land reclamation was common practice in American cities in the 19th and 20th centuries. Seattle, Chicago, Boston, Charleston, San Francisco, New York, Philadelphia, Norfolk, DC, Oakland, and LA all had major land reclamation projects that extended residential living space or infrastructure or both.
The Bay Area alone reclaimed an area of land equivalent to ten Manhattans between 1850 and 1957, at an inflation-adjusted cost of $330,000 per acre. Today, an acre of single-family-zoned land in San Francisco County averages $24 million. Even if the cost of land reclamation grew faster than inflation, despite technological leaps in dredging and construction technology, there should be plenty of room for profitable arbitrage.
And yet, land reclamation is extinct in the Bay Area as well as in every other American city. This isn’t because we ran out of good spots to reclaim: Two thirds of the San Francisco Bay is shallower than Boston’s Back Bay was when it was reclaimed in the 1860s. Nor is it because of better transportation: We’ve used up all of the easy suburban expansions enabled by the train and the automobile so prices are rising even in outlying suburbs.
Instead, land reclamation’s death is due to environmental law. Evidence for this claim shows up in the coincident timing of land reclamation’s demise across dozens of cities in the US and in the environmental compliance process of the few reclamation projects still inching along today, but the best evidence is found internationally.
No country has more experience or more reason to reclaim land than the Netherlands. The Dutch built 5% of their country out of the sea over the first half of the 20th century and by 1975 they had another artificial lake in the Zuiderzee ready to drain at the flip of a switch, which would have made tens of thousands of acres of land just east of Amsterdam. But a 1969 environmental review law, similar to NEPA in the US, stopped the project before it was finished and the site is now a protected bird sanctuary. Their one major reclamation since, the Maasvlakte 2 extension of the port of Rotterdam, took 11 years and 6,000 pages of environmental review before construction began.
Inversely, countries without these laws, like China, Singapore, and Japan have continued major land reclamation projects into the 21st century. China has reclaimed over 5,000 square kilometers since 2000, including a city of half a million outside Shanghai and Singapore has grown by a quarter since 1975.
Every major American city has a land shortage. But we have more than enough shallow water, dredging capacity, and market incentive to make more land, just like we did 150 years ago. The only obstacle is our own choice to make making land illegal. The benefits of more land in our most productive cities are large enough to justify the effort of reforming the laws that currently prevent it. Let’s make more land!