D Spencer Engineering, LLC provides Mechanical, Electrical and Plumbing engineering design services for building construction industry. A wide range of expertise and depth of experience enables our team to complete even the most complicated design and engineering projects with ease. Our designs comply with various industry codes and standards, including but not limited to, current International Building/Trades codes, ASHRAE standards, SMACNA standards, and all other requirements of state and/or local Authorities Having Jurisdiction.