The Summerside neighbourhood is located within the Ellerslie Area Structure Plan (ASP) and is found at the centre of the ASP. The neighbourhood is bounded by Ellerslie Road (9th Avenue SW) to the north, 66th Street to the east, 25th Avenue to the south, and Parsons Road (91st Street) to the west. Construction in Summerside began in the early 2000s and is still actively under way. The plan for Summerside was to create a community that provides for a range of low- to medium-density residential and business development opportunities, in addition to a good mixture of institutional and recreational land use. When completed, residential units in Summerside will be 75 percent low-density in character and 25 percent medium-density. The ratio between low- and medium-density housing as of 2006 was 80/20, but that will change once development is complete.
The neighbourhood will also contain a variety of park spaces and two school sites once complete. A business and office park is located along Parsons Road on the neighbourhood’s western border, and small community-level commercial facilities are located along Ellerslie Road to the north. Summerside's most significant feature is the 13-hectare and 28-foot-deep Summerside Lake, located in the western portion of the neighbourhood. Summerside Lake was Edmonton’s first purpose-built man-made lake. All other lakes in Edmonton constructed before Summerside Lake were stormwater management lakes, designed to effectively handle drainage within neighbourhoods. By contrast, Summerside was created for the sole purpose of providing residents with recreational space where they can swim, fish, and use non-motorized vehicles. Residents pay a maintenance fee to enjoy exclusive use of the lake. Summerside was named after a city on Prince Edward Island. The neighbourhood exudes a nautical character reminiscent of an east coast resort community.