Which statement best describes brownfield sites?

• A. Greenfield sites with no contamination.
• B. Land previously developed and contaminated, with redevelopment potential.
• C. Previously developed lands that may be contaminated but offer opportunities for sustainable redevelopment.
• D. Land designated for industrial use only.

Answer: (C)

Brownfield sites are parcels of land that have been previously developed, typically in urban areas, and may carry contamination from past uses. The value in these sites comes from reusing existing urban infrastructure and helping urban regeneration, which aligns with sustainable development goals. Redeveloping them usually involves environmental site assessments, risk evaluations, and appropriate cleanup to make the land safe for the new use. Because contamination can vary, saying the land “may be contaminated” captures the reality without assuming heavy pollution. This description—previously developed land with potential contamination and opportunities for sustainable redevelopment—best fits how brownfields are understood in construction and planning. It also contrasts with greenfield sites, which are untouched by development, and with land designated for industrial use only, which ignores the redevelopment and sustainability aspects.