San Leon's housing is shaped by the water. The community includes older cottages and modest homes from its fishing-era past, alongside waterfront and canal-front properties oriented toward boating and bay views. Because San Leon is unincorporated, development patterns are looser than in nearby cities, and the housing stock is a mix of primary residences and weekend or summer homes. Buyers are typically drawn by bay access, water views, and the community's relaxed, non-suburban character rather than by formal subdivision amenities.

San Leon is organized around its peninsula and the roads that run along and across it, with homes distributed between the bayfront, the canals, and the interior blocks. Waterfront and canal-side streets hold many of the community's most desirable properties, while the interior mixes older cottages with newer construction. There are no incorporated subdivisions in the formal sense; the community's identity is defined by its waterfront orientation and its position on Galveston Bay, with most homes within a short drive of the water.

Life in San Leon revolves around Galveston Bay. Fishing, boating, crabbing, and oystering are part of the everyday fabric, and the community's seafood restaurants and dockside bars anchor its social scene. The pace is laid-back and distinctly coastal, with little of the formality of an incorporated city. Residents value the water access, the working-waterfront character, and the sense of a place that has stayed true to its fishing roots, all within commuting distance of Houston and the Galveston area.

San Leon is served by the Dickinson Independent School District, which operates San Leon Elementary School within the community and serves students through high school across the surrounding area. The district is part of Galveston County's public education landscape, and families in San Leon enroll through its schools. The community's unincorporated status means no municipal school system of its own, so Dickinson ISD is the local public option.

San Leon is reached via State Highway 146 and the roads of the Galveston Bay shoreline, connecting the community north toward the Houston metro area via Interstate 45 and south toward Galveston and Texas City. The community sits roughly midway between Houston and Galveston Island, making both reachable within about 30 to 45 minutes by car. A personal vehicle is essential, and the area's bayfront roads provide the main local circulation.

Galveston Bay is San Leon's recreation center, with fishing, crabbing, boating, and kayaking available from the community's waterfront and marinas. The area's seafood restaurants and dockside spots double as gathering places. Nearby, the Kemah Boardwalk and the Clear Lake recreational boating scene are minutes away, and Galveston Island's beaches and attractions lie to the south. For residents, the bay itself — its water, its wildlife, and its fishing — is the primary draw.