<!doctype html public «-//w3c//dtd html 4.0 transitional//en»> http-equiv=content-type content="text/html; charset=iso-8859–1"> This volume offers practical commentary on the modernization of service descriptions in the new HOAI [German fee scales for architects and engineers]. The commentary aims to educate readers on legal principals resting at the intersection of contract law and price law. It also provides practical assistance for drafting and executing architectural and engineering contracts.