Concentric Zone Model Notes

Central Business District (CBD)

• The original core of a city's economy.
• Present in all urban land use models.
• Services are attracted due to accessibility.
• Real estate is the most expensive.

Concentric Zone Model

• Developed in the 1920s by E.W. Burgess, based on Chicago's urban growth.
• Land use is viewed as a series of rings.
• New rings are added, and older rings change with city expansion.
• Architecture and building functions match each ring.

Invasion and Succession Migration

• New city arrivals move to rings near the CBD.
• This pushes existing residents and economic activities to outer rings.
• Zone in transition: the ring outside the CBD that remains undeveloped due to constant shifts.
• Sometimes called "skid row".

Bid-Rent Curve

• Predicts land prices and population density decrease with distance from the CBD.
• Shows variations in rent different users pay.
• Transportation costs increase with distance, so rent costs decrease.
• Different land uses generate different bid-rent curves.