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M09.L01 — Price Ceilings: Rent Control and Shortages

Module: Module 09 — Price Regulation, Taxes, and Subsidies Lesson: L01 of 05 Duration: ~30 minutes Level: Introductory Provenance: OpenStax Principles of Microeconomics 3e | Microeconomics 1e (Medeiros)

Learning Objective

Understand how price ceilings create persistent shortages and unintended consequences in markets.

Price Ceilings in the Housing Market

In Sydney and Melbourne, rent control policies (a type of price ceiling) set maximum prices below equilibrium levels, leading to persistent housing shortages. Rent control aims to make housing affordable but often reduces the quantity and quality of available housing. Landlords may under-maintain properties, and black markets can emerge where tenants pay additional fees to secure housing.

Worked Example

Rent Control in Sydney

  1. Equilibrium without control: Market rent = $500/week, Quantity = 1,000 units.
  2. Price ceiling imposed: Maximum rent = $400/week.
  3. Result: Quantity demanded rises (more people seek cheap rent), but quantity supplied falls (landlords exit the market). Shortage = 300 units.
  4. Long-term effects: Landlords reduce maintenance, leading to poorer housing quality.

Common Misconception

"Rent control helps all low-income renters."

Rent control benefits current tenants but harms future renters by reducing supply. It also creates inefficiencies like black markets and quality deterioration.

Key Takeaways

  • Price ceilings set below equilibrium cause shortages.
  • Rent control can reduce housing quality and supply.
  • Black markets may emerge to circumvent price controls.
  • Long-run effects depend on elasticity of supply and demand.

Practice

  1. Why does a price ceiling below equilibrium create a shortage?
  2. How might landlords respond to rent control in the long run?
  3. Who benefits and who loses from rent control policies?

Further Resources

Provenance: OpenStax Principles of Microeconomics 3e | Microeconomics 1e (Medeiros)