Good coupling of ground‐borne vibration to a building structure is obtained with piled foundations and with a raft and casement construction. The magnitude of the response of the structure depends on how close the natural frequencies of its main components are to the predominant input frequency. With separate foundation blocks or footings dynamic coupling through the soil can arise between adjacent foundations in different modes. Results will be given of computation of the coupling between foundations resting on an infinite elastic half space and a comparison with some experiments will be made. The transmission of vibration through the buildings will depend upon the degree of damping. Some estimates will be given of theQfactors for modern buildings. Where the expected vibration levels in a building due to ground borne vibration are too high, a degree of decoupling can be achieved at the foundations by mounting the structure on rubber bearings and examples will be shown of actual installations.