HOME Mackay Design Services offer a first class service to both installation contractors and end user clients. Projects are undertaken up to a value of £2million, however we pride ourselves on being extremely flexible and are  happy to undertake any building services work that is required by our clients. Down to earth and practical is our  motto. Sometimes all a client requires is a simple heat loss calculation for example, this is fine and we will be glad to help, it may lead to something bigger later on. We also offer cad drafting services, operation and maintenance manual production to name just a few, see  services page for details.  We hope you will find our website of interest and look forward to hearing from you shortly.