380. Exclusion of remedies.

The ordinary rules relating to all commercial contracts apply to building contracts (unless with a consumer) in determining whether a provision has the effect of excluding or restricting the right or remedy that would otherwise be available1. Some building contracts do, however, limit the right of the parties to question the subject matter of certificates unless a specific step is taken at or about the time when that certificate is issued2. Such provisions are subject to the test of reasonableness in the