Taiwan is running out of legal places to dump construction dirt, and the cost is quietly making homes more expensive for everyone.

• A wave of urban renewal, old-building rebuilds, and big public works is producing huge amounts of leftover dirt from digging.
• There aren't enough legal dumping sites, many are full, and hauling costs have jumped as fuel and labor got pricier.
• It now costs more to dump a cubic meter of dirt than to buy the same amount of ready-mixed concrete, and that cost gets passed into home prices and public project bills.
• Strict, complicated rules make legal disposal so expensive that some operators dump illegally instead — one case near Taichung left a three-story pile of waste dirt and 63 people charged.
• Neighbors handle this better: Singapore used spoil to expand its land by over 20%, while Hong Kong and Japan reuse clean dirt for airports and port projects instead of treating it as trash.

Outlook: With costs high and construction booming, the dirt crisis is likely to drag on, though new dumping capacity at Taichung and Kaohsiung ports and a push for a national land-reclamation plan may ease it.