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To get a construction contract with the City of Ontario, the City must have a current contractor's prequalification application from you. The application must be updated annually. Once you have prequalified, you may bid on construction projects.

The City is not currently soliciting bids. Please check back later.









The unofficial bid files supplied on this page are not true "bid sets" (aka "bid documents"); true bid sets must be purchased from the City of Ontario Engineering Division. The unofficial files are provided for information only. They are usually compressed in the .ZIP format, see our File Type Information page if you don't know what that means.

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