The square footage method of estimating is typically not recommended for which type of contracts?

The square footage method of estimating is not recommended for lump-sum contracts because this type of contract requires a fixed total price for specified work, making precise estimation critical. In a lump-sum contract, the contractor assumes the risk for any deviations from the estimate, leading to difficulties if the square footage method oversimplifies complexities such as design variations, material selections, or labor requirements.

Square footage estimates can be too generalized and may not adequately account for the specific details and variables involved in a project, which are vital in ensuring accurate pricing in lump-sum contracts. This could lead to either underbidding or overbidding, both of which can be detrimental to the project's financial outcome and the contractor's obligations. Hence, more detailed and nuanced estimating methods, such as detailed quantity take-offs or price breakdowns based on specific project components, are more suitable for lump-sum contracts.