Hope for Disabilities

When you are making plans to go to a new building for the first time, whether it is for an appointment of some kind, or for a social event or activity, whose responsibility should it be to know ahead of time if the building is accessible for assistive devices like wheelchairs, walkers, canes, etc? How have you handled it, if you have gone to a new place for the first time expecting and assuming that it is accessible and you get there to find out that it is not? Do you put in a complaint about it or just let it go? If you do put in a complaint about a place of business not being accessible, who do you talk to, the store owner, the building owner if the store is just leasing the space from someone else, or do you take it to the City Hall office to file a complaint with the code enforcement officer and they give the building owner a specific amount of time to have the repairs done to bring the building up to code or face fines and maybe even jail time.