AP® Microeconomics · Unit 6 · Topic 6.2
Property Rights and Private Bargaining
When property rights are clearly assigned and bargaining is costless, affected parties can negotiate their way to the efficient outcome themselves, regardless of who initially holds the right.
Nobody dumps trash in your yard because it's yours; you can sue, charge, or say no. Nobody owns the sky, so anybody can dump carbon into it for free. That's the whole story of why some externalities get solved privately and others need government: a clear, enforceable property right turns a free side effect into something somebody must pay for.
Once a right exists, the two sides have something to trade. Say the orchard has the right to be free of bees, but the beekeeper's hives would also pollinate the blossoms, adding value. The beekeeper can pay the orchard for permission to keep bees up to the point where the extra pollination value just covers the extra cost of keeping them. Flip the right to the beekeeper instead, and the orchard now pays the beekeeper to keep expanding, since the pollination benefit to the orchard still exceeds the cost. Either way bargaining pushes bee-keeping to the same efficient level; only the direction of payment flips. This is the Coase result: with well-defined rights and low bargaining costs, the market internalizes the externality on its own.
That last condition is the hinge to the rest of the unit. Two neighbors can bargain cheaply. Ten thousand people breathing the same smoggy air cannot; finding everyone, agreeing on shares, and stopping free riders costs more than the deal is worth. When bargaining costs are high, private deals collapse and the case for taxes, subsidies, or regulation appears.
Key terms
- Property right
- A legally enforceable claim to use, exclude others from, or transfer a resource.
- Coase theorem
- The idea that with clear property rights and costless bargaining, parties reach the efficient outcome regardless of who holds the right.
- Bargaining costs
- The time, effort, and difficulty of identifying parties, negotiating, and enforcing a private agreement.
- Externality
- A cost or benefit from an activity that falls on someone who is not party to the decision.
- Efficient outcome
- The quantity of an activity at which the marginal benefit to all affected parties equals the marginal cost.
Watch it explained
- How it worksHow does assigning a clear property right let two parties bargain to the efficient outcome?
- How it worksWalk me through a beekeeper and an orchard settling an externality between themselves.
- Going furtherWhat happens to private bargaining when ten thousand parties are affected instead of two?
- Common mistakeWhy isn't the efficient outcome different depending on who gets the property right?
Check yourself
End of topic.