If you sell to cities, counties, water districts, or transit agencies in California — and increasingly across the rest of the country — you will run into PlanetBids fast. It is one of the most common electronic bid systems in local government, and each agency runs its own separate PlanetBids Vendor Portal(often reached through a link on the agency’s purchasing page or a web address containing planetbids.com). This guide takes you from “never used PlanetBids” to submitting a compliant response.

The good news for suppliers: PlanetBids is free. You never pay the vendor to register, receive notifications, or submit a bid. The one thing that trips up newcomers is the submission method — some agencies accept a fully electronic bid, while many still also require sealed paper copies delivered by the deadline. Always confirm which before you build your response.

What PlanetBids is (and who uses it)

PlanetBids is a hosted procurement platform where a public agency posts its open solicitations — Invitations for Bid (IFBs), Requests for Proposals (RFPs), Requests for Qualifications (RFQs), and similar — and manages vendor lists, bid distribution, and (where enabled) electronic bid submission. Because each agency licenses its own portal, there is no single national PlanetBids marketplace. You register separately with each agency you want to do business with, on that agency’s specific vendor portal.

The fastest way to reach the right portal is to start from the opportunity. On our bids directory each PlanetBids listing links straight to the source portal — open the listing, click through, and you land on the exact page where you register, download the bid package, and submit.

Step 1 — Register as a vendor

From an agency’s PlanetBids Vendor Portal, create a free account with your business email. You confirm the email, set a password, and enter company details — legal name, address, contact, and (importantly) the commodity categories you supply. PlanetBids uses these categories to decide which bid notifications you receive, so pick them carefully: too few and you miss opportunities, too many and you drown in irrelevant emails. Many agencies use NAICS or their own category lists; if you are unsure which apply, see our guide to NAICS codes.

Registering on the portal is not always the same as being an approved vendor with the agency. Some governments also require you to be in their financial/vendor system (a W-9, insurance on file, a local business license, or a small-business certification) before they can award or pay you. Read the solicitation to see whether separate registration is required, and handle it early — not the night before the deadline.

Step 2 — Find and download the bid package

Once registered, the portal’s Bid Opportunitieslist shows the agency’s current open solicitations. Open the one you want and read the summary first: the bid due date and time (note the time zone), the project scope, and any pre-bid meeting or site-visit requirements — some are mandatory, and skipping a mandatory walk-through disqualifies you no matter how good your bid is. Then download the full bid package: the specifications, plans or drawings, the bid form or pricing schedule, and any required certifications and forms.

Downloading the documents typically adds you to the agency’s prospective biddersor plan-holders list for that solicitation, which is how the portal reaches you with addenda. That matters — missing an addendum is one of the most common ways an otherwise strong bid gets rejected. Before you commit days to a response, do a quick bid/no-bid read; our guide on how to read an RFP shows how to find the evaluation criteria fast and decide whether you can win.

Step 3 — Prepare your response

Fill out the agency’s bid form exactly as provided — do not substitute your own quote sheet unless the solicitation allows it. Complete every required attachment: the pricing schedule (line by line), signed addenda acknowledgements, references, proof of insurance, bonding for construction, non-collusion declarations, and any set-aside or diversity certifications. If you hold a small-, minority-, women-, or disabled-veteran-business certification, have the paperwork ready — see set-asides and certifications for which ones matter.

Watch for math and completeness errors on the bid form: unit prices that do not multiply out, blank lines, or a missing signature are the classic reasons a public agency deems a low bid “non-responsive” and throws it out. Have someone double-check the totals before you finalize.

Step 4 — Know your submission method (this is the big one)

This is where PlanetBids differs from a pure online portal. There are two possible submission methods, and the solicitation tells you which applies:

  • Electronic bidding (eBidding). Where the agency has enabled it, you enter your pricing and upload your documents directly in the portal and click submit. The portal timestamps and locks the bid at the deadline.
  • Sealed paper submission. Many PlanetBids agencies use the portal only to distribute documents and manage the plan-holders list, but still require one or more sealed paper copies physically delivered to a specified address by the deadline. Some require both an electronic upload and paper originals.

Never assume. Read the “submission” or “instructions to bidders” section of the solicitation and do exactly what it says. If it calls for sealed paper, plan your printing, binding, and delivery (courier or hand-delivery) with real buffer — a bid that arrives one minute late at the counter is rejected just as firmly as a late electronic upload.

Step 5 — Submit before the deadline

For electronic bids, the portal clock is the clock. PlanetBids locks precisely at the posted due date and time, in the agency’s stated time zone, and will not accept a late upload — no grace period, no email workaround. Upload early: large files and slow connections are the number-one reason a bid misses the deadline. You can usually revise or withdraw and re-submit right up until close, so submit a complete draft early and refine it if you have time. For sealed paper, aim to deliver well before the stated hour and get a time-stamped receipt.

Costs, questions, and after you submit

PlanetBids is free to vendors — there is no charge to register, download, or submit. If a solicitation is unclear, submit your questions through the portal’s question function before the questions deadline; agencies typically answer all bidders at once via a posted addendum, which you must acknowledge. After the close, many agencies post a bid tabulation showing who bid and at what price; award of larger contracts often needs governing-board approval, so expect a wait.

The bottom line

Bidding on PlanetBids comes down to four habits: register and pick your commodity categories so you actually hear about bids, download the package to get on the plan-holders list for addenda, confirm the exact submission method (electronic, sealed paper, or both), and submit with hours to spare. For the wider view of finding these opportunities, see how to find local government contracts — then browse open bids near you and follow each listing straight to its portal.