Construction bidding has three major categories namely open bidding, selective bidding and negotiated bidding. Open bidding permits the display of the proposal by any qualified contractor, a usual situation in various public works. Selective bidding welcomes pre-qualified list of contractors, which is of good quality and reliable. Negotiated bidding refers to the case where there is direct negotiation with one contractor usually on complex or fast track projects. Both techniques have advantages and disadvantages and this depends on the project size, scope as well as urgency.

That’s a great explanation of the main types of construction bidding. Each method—open, selective, and negotiated—serves different project needs based on complexity, time, and budget requirements. To support accurate bid preparation and cost planning, many contractors now rely on Construction Estimation Services like those offered by Vertex Estimation. These services help ensure that project estimates are detailed, realistic, and competitive, improving the chances of winning bids while maintaining profitability.

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