What should a commercial steel building quotation include?

A commercial steel building quotation should provide a traceable description of the proposed work, the basis on which it has been priced and the responsibilities of each party. It should allow the client, architect or contractor to compare quotations on a like-for-like basis and identify what must be arranged separately before an order is placed.

Start with the project scope. The quotation should identify the building or phase to which it applies, the revision of any information used for pricing and the intended function of the structure. Where a project has several areas, such as storage, production, office or welfare accommodation, the quotation should distinguish between them rather than treating the building as one undefined package. Any optional elements should be listed separately from the core scope.

Check the design responsibility. A quotation should state whether the supplier is responsible for the structural design, detailing, fabrication information and coordination with other consultants, or whether those items are being provided by the client’s design team. It should also identify the design standards and loading information used as the basis of the proposal. If calculations, connection design or certified design documentation are included, the quotation should say what will be issued and at which stage.

This distinction matters because a fabrication drawing package, a planning drawing package and a structural calculation package serve different purposes. The quotation should describe the intended drawing deliverables, their format and the number of design review or approval stages allowed for. It should also explain how revisions requested after approval will be assessed, particularly where they affect fabrication or previously completed design work.

Look for a properly itemised specification. The document should identify the principal components and relevant performance requirements, not simply describe them as a standard steel frame. Useful details may include:

• the frame arrangement and connection approach;
• roof and wall build-up, including insulation or lining requirements where applicable;
• openings and ancillary items such as doors, windows, rooflights, ventilators, gutters and flashings;
• protective treatment and the required finish for the intended environment;
• internal floors, mezzanines, crane beams or other specialist elements if they form part of the proposal; and
• interfaces with cladding, drainage, electrical installations, mechanical services and other packages.

Items that are not required should be marked as excluded rather than left ambiguous. For example, a door opening shown on a drawing does not necessarily mean that the door itself, its controls or associated electrical work is included. Clear item descriptions prevent assumptions being made from drawings alone.

Confirm how the price has been built up. A good quotation makes clear whether prices are fixed for the stated scope, subject to confirmation, or dependent on later information. It should identify the treatment of VAT and any allowances, provisional sums or design-development costs. If transport, lifting, access equipment, temporary works, surveys or specialist subcontractors are priced on assumptions, those assumptions should be visible rather than concealed within a single total.

The quotation should also explain what happens if the client changes the design, dimensions, openings, finishes or specification after approval. A useful variation procedure states how changes are instructed, priced and authorised, and whether they can affect the programme or manufacture. This is particularly important where steelwork has already been detailed or produced.

Examine the site interface carefully. The quotation should identify the information the supplier has relied upon, such as a site survey, ground investigation, existing drawings or confirmed levels. It should state which party is responsible for setting out, foundations, holding-down bolts, slab tolerances, access routes, storage space and readiness of the site. Where the steel supplier is not undertaking these works, the boundary between the steel package and the groundworks package should be explicit.

For an occupied, restricted or operational site, the quotation should record any access restrictions, delivery constraints, working-area requirements and lifting assumptions that affect the method of installation. These points are not merely logistical: inadequate access or incorrect foundation positions can result in additional work even when the steelwork itself has been priced correctly.

Check regulatory and approval-related responsibilities. The quotation should identify which party is expected to obtain planning permission, building control approval, environmental permissions or other consents, and which documents the supplier will provide to support those applications. It should distinguish design information supplied for approval from approvals that the supplier is not responsible for obtaining. Fire strategy, escape arrangements, insulation performance and service installations may also involve other designers, so the quotation should state where coordination begins and ends.

Review delivery and installation assumptions. If erection is included, the quotation should describe the extent of the installation service, including unloading, positioning, temporary stability measures, fixing of secondary components and handover requirements. It should state what the client must provide, such as a suitable access route, prepared foundations, lifting area, welfare facilities or other site resources. If the client is buying a building kit for third-party erection, the quotation should not imply that installation supervision, site management or remedial work is included unless it is expressly listed.

Finally, check the document’s administrative details: quotation reference, issue date, validity period, project contact, order requirements and the documents that take precedence if information conflicts. The accepted quotation should be read alongside its drawings, specification and terms rather than in isolation. Before approval, ask the supplier to resolve every undefined abbreviation, allowance and boundary of responsibility. The strongest quotation is not necessarily the shortest or lowest-priced one; it is the one that leaves the fewest material decisions to assumption.