All manufacturer's installation requirements are incorporated into your local building code in addition to their local requirements. The stricter rule is the one that must be complied with if your local codes are more lax or more stringent.

Future MIL in VA, installed an extra electric W & D in her detached garage. The building inspector made her raise it off the garage floor. Not sure of height. But, I agree that you may have to do so to meet the building code. Check with your locality.

Thank you very much for all your help, and thank Barryv for sharing your experience. I found amazon sells plywood pedestal but only 14" high. Where can I check building code?

Really appreciate your help.

Call your local county/city administration office and they will have an inspection office they can connect you to. I should also mention future MIL built a platform as well instead of buying a pedestal. Those pedestals are expensive! HTH :)

Just call your local towns building permit office and someone there will explain what you need.

Sreedesq and Jakvis, thank you very much for your help.

One other thing to check is the height - width of your favorite detergent. Like is much easier if the platform is high enough that you can store your extra laundry detergent under your dryer. Since most dryers are front load, not top load, going a few inches higher than code is not a problem, actually makes it easier to get clothes in and out, so if you are getting a platform, I would make it high enough to store things under it.