Large and functional project, which constituted of extending the existing mezzanine and building another floor. In total, we have enlarged the family’s living space by almost 40m2 and 3 new rooms. Mezzanine prepared for self-finishing (oiling, waxing or painting). Additional works: installation of light wooden partition wall, railings, adaptation of the stair hatch. Location: Warsaw Białołęka. Material used: pine / scandinavian spruce.