Cross Laminated Timber (CLT) is one of the most representative Engineered Wood Products, especially for low-and mid-rise timber buildings. Although in the 2000s, its use in Europe increased significantly, Portugal is still at a starting point and Spain needs a boost for its dissemination. Aiming promotion and dissemination of this type of buildings in SUDOE region, Eguralt project promotes research and innovation capacity for its sustainable growth. As a partner, one of SerQ's objectives is to promote the production of CLT solutions with wood from local species.The advantages of CLT are well known. However, the use of CLT in composite solutions requires the study of the overall performance, namely: stiffness; strength; dynamics and acoustic performance. Continuing recent studies in these areas, this paper presents an experimental campaign on the assessment of CLT-concrete connections and its comparison with the design models available. CLT was produced at SerQ's facilities with local maritime pine (Pinus pinasterAit.) wood. In situ concrete casting and precast concrete processes were a study variable. Notch shear connectors with different geometries and screws or U-shape rebar cages to prevent uplift, gives the system its composite behaviour. The load capacity of the connectors was theoretically predicted and validated with shear tests, and the experimental results were then compared with those. The results of the specimens cast in situ were satisfactory, while the results of the precast specimens were below expectations.