Worldwide population growth has led to an increase in construction projects, resulting in increased construction and demolition waste (CDW). The CDW generated through construction activities, renovations, and demolitions poses environmental challenges. To mitigate these problems, researchers have focused on recycling CDW for road construction, which requires large amounts of earth material. Recycling waste as a natural aggregate replacement is environmentally beneficial and cost effective. In Thailand, laterite soil (LS) is commonly used in road construction, although it often requires stabilization owing to its low bearing capacity. Recycled concrete aggregate (RCA), produced in large quantities in Thailand, is a viable alternative. In this study, lime was used as a traditional binder that reacts with soils rich in clay, silica, and alumina to form cementitious materials. This study examined the compaction characteristics and unconfined compressive strength (UCS) of laterite soil mixtures with RCA and lime after 7 and 28 d of curing. The results showed that increasing RCA and lime corresponded to higher optimal moisture content (OMC) and lower maximum dry unit weight (MDUW). Additionally, the UCS values improved with longer curing periods. These findings provide valuable insights into the integration of recycled materials into sustainable road-construction practices.