Multi-story residential and commercial timber buildings are an efficient solution for sustainable cities. Numerous projects have been and are expected to be realized in Sweden. In-situ wind-induced ambient vibrations tests have been conducted on a six-story light-weight timber-frame building in Varberg (Sweden). The load-bearing structure is composed of outer walls and some interior walls. For horizontal stabilization, the walls are supported by a bracings system realized with steel rods. To perform the in-situ measurements, multiple battery-driven data acquisition units, with uni-axial accelerometers have been used. Repeated measurements at different positions have been performed to be able to collect data at each floor and along both directions (longitudinal and transversal). Two different Operational Modal Analysis (OMA) methods have been used to evaluate the modal parameters: frequency, damping and mode shapes. The in-situ dynamics properties have been compared with the dynamic properties obtained from the Finite Element (FE) model of the structure.