I didn't find any definitive guidance on which physical address to use, but can confirm that places such as RV and houseboats that can be classified as homes are eligible. Additionally, there is no lifetime or dollar limit to the credit. The credit is for a new system not based on location. So if someone installs a system and takes a credit in one year they are not precluded from installing and taking a credit on a new system in another year on the same property. Also, the home does not need to be one's principal residence one just has to be the or one of the owners.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
