Techno-commercial bid evaluation: separating the technically compliant from the merely cheap.

So that technical judgement is made without knowledge of prices. Once evaluators know who is cheapest, technical assessment becomes very hard to keep independent. The two-envelope sequence protects the integrity of the compliance decision and is standard practice in both public and disciplined private procurement.

Where a bidder offers terms different from the tender (a shorter warranty, an excluded item, different payment terms) the evaluation assigns a monetary value to that difference and adds it to the bid price for comparison purposes. Without loading, an apparently cheaper bid may simply be a smaller scope, and the comparison is meaningless.

In many public procurements the lowest technically compliant bid, L1: is the default, but that is after compliance and loading, not on the raw figure. Where quality of approach matters materially, a quality-and-cost-based selection with stated weightings may be used instead. Whichever method applies must be declared in the tender document, not chosen after bids are opened.

An unusually low price often reflects an error, an omission in scope, or a deliberate strategy of recovering margin through variations and claims during execution. Evaluation should identify such bids, seek justification of the rates, and put the risk in front of the owner explicitly, so that a decision to accept is taken knowingly rather than by default.

Yes, for clarification of what has been submitted, but not to allow a bidder to change its offer or to make a non-compliant bid compliant. The distinction matters: clarification preserves a level field, negotiation of substance after opening does not, and in public procurement the latter is a serious procedural defect.

The owner, through its tender committee or delegated authority. A project management consultant evaluates and recommends; it does not award. Keeping that separation clear is part of what makes the process defensible if the award is later questioned.

Criteria stated in advance and applied consistently, every deviation identified and valued, clarifications recorded in writing, arithmetic corrections shown, and a recommendation that follows visibly from the analysis. A report that reaches a conclusion without showing the working invites exactly the challenge it should prevent.