Complex sentence: Sometimes a real estate trend evolves to meet a specific need, while others evolve when new products or solutions are launched; at other times, a trend from another industry spills over into the real estate industry and is adopted.
Split into simpler sentences: Sometimes a real estate trend evolves to meet a specific need, while others evolve when new products or solutions are launched. At other times, a trend from another industry spills over into the real estate industry and is adopted.