This joint venture agreement template can be filled out in minutes, helping you and your partner establish a legally-binding joint venture agreement. Easily customize proposals in the format that the owner requires through the construction proposal software feature menu within HeavyBid.The Proposal Lab is here to guide you in elevating your proposal writing and securing the contracts you deserve. What is a construction proposal? What to include in a construction proposal. Instantly draft and send a business proposal template to establish the terms and conditions between your business and clients. Download Massachusetts Business Proposal template, modify and send for signing using BoloForms Signature. Download Massachusetts Request for Proposal template, modify and send for signing using BoloForms Signature.