The City of Sioux City Purchasing office's function is to purchase goods and services in a fair, competitive and cost-effective manner.

If you would like to be included as a vendor in the City's Purchasing System you will need to submit an IRS Form W-9, a listing of goods and services that your company provides, contact name, company phone number, company fax machine, and email address. You can mail, email or fax the information to the department. A blank W-9 form is available for download

• Blank W-9 Form

The City of Sioux City requires a service provider agreement when work is performed on City property and vendors must comply with general conditions; If the service provider agreement is greater than $25,000 then the long form service provider agreement is used along with long form general conditions. If the service provider agreement is $25,000 or less then the short form service provider agreement along with short form general conditions are used. A bidder status form is also required when services are being performed on City property.

The forms are available for download as follows:

• Long Form Service Provider Agreement
• Long Form General Conditions
• Short Form Service Provider Agreement
• Short Form General Conditions
• Bidder Status Form

Proposals to bid are mailed, emailed or faxed to vendors and may be returned via mail, email or fax depending on the bid's requirements.  Bid tabs are available by contacting our office.

To be notified of upcoming projects that require a public notice, register on the City's Engineering website.