The results are presented of dendrochronological research at six prehistoric pile-dwelling settlements of the Ljubljana Moor in 1995-2001. With the aid of 13 radiocarbon dated chronologies of the annual ring widths, the most reliable absolute chronological framework to date has been established for settlements from the fourth millenniums BC (Hocevarica, Spodnje mostisce 1 and2), and the third millennium (Parte- Iscica, Parte, Zaloznica). It has also been established that the nearby sites of Spodnje mostisce 1 and 2 represent one settlement. The approximately 10 km distant settlements of Parteand Zaloznica existed at the same time. Within the pile-dwelling settlements, the phases of construction and the plans of dwellings have been reconstructed, which shows that buildings were placed at the same spot in varied chronological periods. The advantages and disadvantages of taking samples of archaeological wood from rivers, drainage ditches, previous excavations, and archaeological trenches are discussed.