Construction contractors interested in performing construction contracts with the department must first complete the Vendor Registration process. Upon project completion, an itemized final invoice and completed NCP Form are required to be supplied to the municipality from the contractor.For more information, A Guide to Business. Welcome to Pennsylvania's online application to register as a home improvement contractor. Contractors must complete and submit the following forms with their proposals. Complete and submit this application for a NEW Contractor License. Name of Pennsylvania Corporation. Title. Use a construction proposal template to automate the creation of contracts and make sure you never put the wrong name or figure in a proposal again.