Start with the decision
An effective plumbing invitation to bid tells a business what to price, which information controls and how to respond. Include a scope sheet, current references, known constraints and one clarification route. Make clear whether you need a budget estimate or a firm quotation.
This guide is for business-to-business project planning in the United States and Canada. For the wider trade context, visit the plumbing resource hub.
Assemble the pricing information
| Package | Source information | Requested pricing distinction |
|---|---|---|
| Fixtures | fixture schedule, quantities and supply responsibility | fixture supply, trim, accessories and installation |
| Distribution piping | system boundaries and approved routing information | supports, insulation and concealed access |
| Tie-ins | identified connection points and operating constraints | isolation coordination and temporary service arrangements |
Download the plumbing bid package worksheet (CSV)
Fill in the response, owner or source, and date checked. Keep unresolved items visible. The file contains planning prompts only; it does not calculate quantities or make an approval decision.
Put the checklist to work
- Identify the issuer, project location, response deadline and time zone. State the permitted submission route and document-access arrangements.
- List drawing revisions and addenda. Include relevant information about fixture selection, access to connection points and agreed service-interruption windows, not simply an intended start date.
- Ask bidders to identify excavation, coring, firestopping, equipment supply and restoration of walls or ceilings as included, excluded or separately offered. Request stated assumptions for unresolved items.
- Explain how questions and revised information will be distributed. Confirm receipt of important changes before relying on an earlier price.
A scope gap worth discussing
Illustrative example — not a Build Accord client project
A washroom quotation assumes existing connection points can be reused. The site visit identifies a different layout. Reconcile the revised routes before comparing the price with another proposal.
Apply this to your decision: A consistent invitation with enough information for comparable responses and a clear record of the documents each bidder received.
Using this in the US and Canada
For a project in the United States
Record the state, local jurisdiction and actual service area. Confirm the project location and the scope of the business’s authority with the responsible project team. The U.S. Small Business Administration provides a starting point for business licensing resources.
For a project in Canada
Record the province or territory, municipality and actual service area. Use Canada’s permits and licences resources to locate relevant checks, including the linked BizPaL service. Confirm requirements for the actual activity and location.
For either market, state the currency, units and deadline time zone. This worksheet is general planning guidance, not a determination of licensing, procurement eligibility or technical compliance.
The next useful step
Continue with how to compare plumbing contractor quotes. For the other side of the conversation, see the plumbing bid proposal guide.
Build Accord coordinates introductions between construction project teams and trade contractors. An inquiry starts a discussion of fit and availability; it does not guarantee a contractor, an invitation to bid or an award. These guides are not a listing of currently available crews or projects.