725 LEGO Basic Building Set

LEGO 725-1 Basic Building Set is a Basic set released in 1990, containing 319 pieces and 2 minifigures. It was also marketed as “Basic Advanced Builder Set” and “Basic Advanced Builder Set – Girl's Special.” The assortment includes core bricks and plates with accessories such as a black horse with harness, doors and lattice windows, a vehicle mudguard, palm tree elements, kitchen utensils, and printed parts like a rotary phone slope. Designed for open-ended construction typical of the Basic line, it supports multiple small builds and play scenarios rather than a single model.

A new and sealed Basic Building Set is currently valued at around $220, with annual growth of 6.0% that is expected to level off to around 1.5% in the coming year. The average used price is $94 for those in good overall condition. Based on current trends, this set could be valued near $222 within the next year. The 2 included minifigs account for approximately 10% of the set's total value.