Find out whether the vendor will be constructing your pre-fab buildings or outsourcing construction.

If you are working with an integrated pre-fab buildings dealer manufacturer, check how long the company has been selling directly to end- users. Be sure that the company has had a strong handling end users directly to ensure a smooth building process.

If you work with a dealer, make sure to find out which manufacturer will be creating the pre-fab buildings.

Do not purchase pre-fab buildings without a complete set of specifications and defined scope of work agreed upon.

Read the contract carefully. Make sure the contract does not allow the manufacturer to substitute materials without specifying that they be the same or higher quality than the materials included in the specification.

Check a builder's reputation. Shoddy pre-fab buildings construction can be hard to identify, even if you are an expert. Speak with references that have had pre-fab buildings for multiple years to see how they have lasted.

Check the seller's experience in building the type and size building you want. You do not want them to learn at your expense.

Ask about the building quality control and inspection process. Knowing what steps builders take to ensure that the finished product meets expectations will help you minimize the risk of disappointment when the final product is delivered.

If you are leasing an already-made building, ask for digital photos and inquire about its last refurbishment.