The penalty for the late filing of a final walk through checklist can vary depending on the specific circumstances and jurisdiction. In some cases, there may not be a direct penalty for late filing, but it can potentially delay the processing of necessary paperwork or the resolution of any issues discovered during the walk through. Additionally, if the late filing is due to negligence or intentional non-compliance with regulations, there may be additional consequences, such as fines or legal ramifications. It is essential to consult with local authorities or legal professionals for specific penalties related to late filing in your jurisdiction.