Searching for construction companies in Berkshire. Look no further. GSM Builders is a one stop solution for all your construction needs. With our great customer service and guaranteed less then 12 hour response, we are the natural choice for the majority. We make your dream a reality. With our architect services, planning liaison and building control know-how, and last but not the least our skilled construction workers. We can help you get the permissions in place to make your existing home everything you need. Whether it be creating an extra bedroom, extending existing rooms or creating a single storey space, we have all the required skills, many years of experience and many satisfied customers.