Castagna Consulting Group, © Copyright 2014. We provide interactive Development Services and Cost Control. Our proven track record for accuracy gives you the peace of mind that your project is on budget. We begin by establishing a detailed understanding of your goals and constraints for the project. This understanding provides us with the context to monitor the development and costs of your project. As we proceed through the design process, we will work closely with you to ensure that all parties understand the cost implications of the various design and program issues