The cost value for the LEED calculation is determined by weight or volume as a percentage of the total. See the example below, and a spreadsheet you can use in the Documentation Toolkit.
A single product or material can contribute to multiple credits. For example, cabinetry made both locally and with certified wood contributes to MRc5 as well as MRc7. Focusing on products and materials with multiple environmental attributes can also limit the overall number of items that must be tracked.
For some CI projects, like high-end offices, furniture costs can be equal to or greater than costs for building materials. Make sure to choose furniture that helps the project gain multiple MR points (for example, furniture that is locally harvested and made of certified wood).
Use your estimated budget as a guide throughout the project. Many projects fail to earn this credit because they wait until all the materials have been purchased before calculating whether they have purchased enough
Using the estimated budget to integrate certified wood into the design and specs early in the process can help prevent costly change orders during construction.