Topic 6.10 Notes – Challenges of Urban Changes

What Urban Change Within a City Is

Earlier urban models explained where neighborhoods tend to be. This topic is about what happens when those neighborhoods change over time.

Urban change means movement within the city of people, capital, services, and political attention. The key pattern is unevenness:

• One neighborhood may gain new housing, retail, and transit investment.
• Another may lose jobs, mortgages, grocery stores, and public services.
• The same city can have reinvestment in one area and abandonment in another.

The causes often work together:

• Suburbanization and white flight pull residents and tax money outward.
• Housing discrimination locks groups into certain neighborhoods.
• Deindustrialization removes jobs and weakens local economies.
• Rapid urbanization can outgrow formal housing supply.
• Redevelopment can improve an area but also raise costs.
• Fragmented government makes metro-wide problems hard to solve.

The effects are also connected: segregation, affordability problems, service gaps, crime and vacancy, environmental injustice, squatter settlements, gentrification, and displacement.

Housing, Segregation, and Uneven Neighborhood Decline

Housing is where urban inequality becomes visible on the map.

• Residential segregation means groups are separated by race, ethnicity, or income across neighborhoods.
  • De jure segregation is enforced by law.
  • De facto segregation continues in practice even without current laws, often because older discrimination still shapes wealth and housing choices.

Redlining

Redlining was area-based denial of mortgages, insurance, and investment. A classic example is the 1930s residential security maps that graded whole neighborhoods by lending risk.

1938 HOLC redlining map of Atlanta

• The HOLC maps in the 1930s labeled many minority neighborhoods as risky.
• That made home loans and investment harder to get.
• Long term, this helped produce lower homeownership, less wealth accumulation, disinvestment, and concentrated poverty.
• The Fair Housing Act of 1968 challenged formal housing discrimination, but the spatial effects lasted.

Blockbusting and white flight

• Blockbusting happened when real-estate agents used racial fear to pressure white homeowners to sell cheaply, then profited from rapid turnover.
• Redlining restricts credit by area. Blockbusting manipulates owners for profit. Students mix these up a lot.
• White flight was the movement of many white, often middle-class residents to suburbs.
• Highways, cars, suburban construction, and federally backed mortgages made that move easier.
• Central cities then lost tax base, which weakened schools, transit, and services.

Affordability and services

• Housing affordability becomes a problem when rents and home prices rise faster than incomes.
• Results include overcrowding, long commutes, homelessness, displacement, and concentration of low-income housing.
• Unequal access to services means some neighborhoods have weaker transit, schools, health care, grocery stores, parks, sanitation, or internet.
• Spatial mismatch means jobs are far from workers, often with poor transit links.
• Food deserts are places with limited access to affordable nutritious food.

Disamenities, Environmental Injustice, and Informal Settlements

Urban decline also shows up through harmful conditions on the landscape.

• A disamenity zone has concentrated negatives like pollution, noise, hazards, or poor services.
• A zone of abandonment has withdrawal of residents and institutions, leaving vacancy and deterioration.
• They can overlap, but they are not the same.

Crime in AP Human Geography is usually explained as a cycle of disinvestment + job loss + vacancies + weak institutions + negative perceptions, not as “poor place = crime.”

Environmental injustice

Environmental injustice means hazards fall disproportionately on disadvantaged groups. Environmental racism is the race-linked version.

• The South Bronx is the standard example.
• Highways, truck traffic, industry, and waste facilities have created health burdens in low-income minority neighborhoods.

South Bronx environmental injustice

Squatter settlements and land tenure conflict

A squatter settlement or informal settlement is housing built without secure legal title. Rocinha in Rio is a classic example.

Rocinha informal settlement, Rio de Janeiro

Common traits:

• self-built housing
• irregular street patterns
• limited water, sanitation, or electricity
• hazardous sites
• eviction risk

Land tenure conflict means disputes over ownership, occupancy, eviction, redevelopment, or legal recognition.

Reinvestment, Redevelopment, and Their Trade-Offs

Urban problems can bring responses, but those responses create winners and losers.

• Urban renewal is government-led clearance and redevelopment of “blighted” areas.
  • Benefits include new infrastructure, safer buildings, jobs, and higher tax revenue.
  • Costs include demolition, forced relocation, loss of affordable housing, and loss of community networks.
  • Boston’s West End is the classic example.
• Gentrification happens when higher-income residents and investment move into lower-income or disinvested neighborhoods.
  • Signs include renovation, rising rents, new retail, and higher property values.
  • Benefits include less vacancy and improved services.
  • Costs include direct and indirect displacement and cultural change.
  • Difference to remember: urban renewal is usually state-directed; gentrification is broader and often market-driven.
• Inclusionary zoning requires or encourages affordable units in new developments. The goal is to spread affordable housing more widely. The standard example is Montgomery County, Maryland and its MPDU program.
• Local food movements include community gardens, urban farms, farmers’ markets, and co-ops. In Detroit, vacant land has been reused for urban agriculture in response to food deserts and disinvestment.

Why Urban Problems Are Hard to Fix

Cities function as metros, but government is split up.

• Functional fragmentation means different agencies control housing, transit, schools, sanitation, health, and planning.
• Geographic fragmentation means the metro area is divided among city, suburb, county, state, and special districts.

That matters because housing markets, commuting, pollution, and poverty cross boundaries:

• suburbs may block multifamily housing
• central cities may carry heavier service burdens
• transit may be regional, but zoning near stations is local
• wealthy jurisdictions keep stronger tax bases

Urban problems operate at both the neighborhood scale and the metro scale, so solutions are often partial and uneven.