Neighborhoods of only bungalows offer more privacy than similar neighborhoods with two-story houses. As bungalows are one or one and a half stories, strategically planted trees and shrubs are usually sufficient to block the view of neighbors. With two-story houses, the extra height requires much taller trees to accomplish the same, and it may not be practical to place such tall trees close to the building to obscure the view from the second floor of the next door neighbor. Bungalows provide cost-effective residences. On the other hand, even closely spaced bungalows make for quite low-density neighborhoods, contributing to urban sprawl. In Australia, bungalows have broad verandas to shade the interior from intense sun. But as a result they are often excessively dark inside, requiring artificial light even in daytime.