This AGREEMENT FOR PROFESSIONAL CONSTRUCTION SERVICES. You and your client should both sign and date the agreement.Partner with contractors in California using our general contractor agreement (Cost plus fee) template. To start drafting your agreement, you can check out LegalZoom's template on this page. Gain Access to SacCounty News! CONTRACTOR'S LICENSE FORM: Each bidder shall complete the Contractor's License. Any legal proceedings arising out of or relating to this Agreement shall be brought in Sacramento County, California. 6. The Contractor shall complete all the work on the. The only universal requirement for all construction contracts is that the contractor must include the California contractor's license number. The only universal requirement for all construction contracts is that the contractor must include the California contractor's license number.