Why would a landscape contractor use different materials than we agreed?

Substitutions can happen, but only with your knowledge and approval. Common reasons include supplier shortages, unforeseen site conditions, or discovering that a different material will perform better in Utah’s climate. For example, if the specified paver is unavailable, a contractor might suggest a similar product from another manufacturer. That’s acceptable only if the alternative is equivalent or better and if you approve it before installation. The correct process is a written change order that lists the brand, model, color, and any impact on cost or schedule. If the reason for the substitution isn’t clear, ask for packaging, labels, or supplier notes to stay on site until you sign off. If you’re not satisfied with the alternative, you’re within your rights to request the original material or a credit. Transparency and documentation are non-negotiable here—don’t accept verbal explanations alone.