<p>Maintaining healthy pollinator communities is vital for both agricultural and natural ecosystems, but there are many threats to pollinator communities globally. Urbanization is a one of these major threats, but urban green spaces present opportunities for pollinator conservation. The effectiveness of designed urban landscapes in supporting pollinators largely depends upon plant selection and design, and there is an increasing emphasis on incorporating more native plants. To provide guidance on how landscape designs and plant selection influence pollinator communities in new residential developments, we compared floral visitors in two recently established neighborhoods: one with conventional landscaping consisting of turfgrass and mostly non-native ornamental plants, and one without turfgrass and mostly native plants. We recorded visual observations of insects visiting blooming flowers and identified 1,361 individuals from 88 different species. While floral abundance was similar between the two communities, pollinator abundance and diversity was 2–3 times higher in the native plant-dominant landscape, showing that plant species selection was more important than floral abundance. Pollinator communities in the conventional landscapes were a subset of the more diverse communities in the native-based landscapes. The short-term addition of potted flowering native plants to the two neighborhoods increased the observed pollinator diversity in the conventional landscapes. Our results show that incorporating diverse native plantings into new and expanding residential developments can lead to the rapid assembly of diverse, abundant pollinator communities.</p>