Doing Business With the City

The City of Napa purchases a wide variety of merchandise and services through a decentralized purchasing system. Our goal is to assist you in your marketing efforts and promote partnerships with the City of Napa. The following information will help familiarize you with the City of Napa’s purchasing policies and procedures.

Before supplying any goods or services to the City of Napa, the vendor must obtain a Purchase Order (PO), or Agreement. This PO or Agreement must be provided in written form. Verbal orders are not acceptable. Failure to obtain a written purchase document (PO or Agreement), will result in the delay, or non-payment of any invoice.

Vendor Registration

The City of Napa uses an online bid management system called Public Purchase. You can register with Public Purchase if you want to do business with the City.

By registering with Public Purchase, you will automatically be notified when bid opportunities of company interest, become available. As a registered user you will also have access to respond to bids electronically. Learn about how to register (PDF).

Please make sure to maintain your contact information (email addresses) and keep your vendor profile up to date to ensure you receive all matching bid opportunities.

Coming Soon!

The City has partnered with OpenGov to replace our current online bidding platform, Public Purchase. This new platform will include a more robust user experience and new tools for vendors.

Vendors interested in working with the City or want to continue working with the City can CLICK HERE to register early! Registration is 100% free for vendors. 

Once the new platform is live on July 1st, 2024, a link will be posted here on this page and our social media platforms.

Stay tuned!


To ensure that you are aware of all formal bidding opportunities, periodically check our website and click on the button titled BIDS on the Home Page, where you can preview a list of current bids. To view a solicitation, click on the title and you will be redirected to Public Purchase. You must be registered in order to view and respond to the bid.


Bidder's response must comply with all specifications, terms and conditions stated in the bid request. The Department in which issued the bid request will reject any and all bids that do not comply with all mandatory elements of the bid request.

If this information does not answer all your questions, please contact the Finance Department.


All orders must be delivered to the address specified on the Purchase Order. Vendors should not deliver goods to an alternate address unless authorized by the Purchasing Services Division as the processing of your payment will be delayed.

Changes in Orders

The Purchase Order is the City's contract with you. Any changes to the contract must be approved in writing by the Purchasing Services Division.

Licenses & Permits

Vendors doing business with the City must have a City of Napa Business License. View information on obtaining a business license.


The City pays California State sales and use taxes when applicable and is exempt from Federal Excise tax.