All businesses that want to contract with the City must register with iSupplier, to receive bid notifications, to apply for local business certification. For more details about open contracting opportunities, please register or login to the City's iSupplier Portal.Each Agent must: Agreement Form,. 1) Complete and submit a signed, copy of this Online Permitting Contractor User. Once you get to the iSupplier Portal, click on the Government Tab. Oakland County requires that the awarded suppliers will authorize their contract availability on the Cooperative program website. Each Agent must: 1) complete and submit a signed, copy of this Online Permitting Contractor User Agreement Form,. Welcome to the Small Local Emerging Business (SLEB) online registration system for local suppliers. Please register only once per local Alameda County business. Find preferred vendor agreement lawyers for Oakland, CA to hire.