If you live in a townhouse who is responsible for insuring against flood damage?

For townhouses, you should make sure your homeowners association carries appropriate federal flood insurance which protects you and you neighbors from rising water from a stream, river, ocean or canal. If a flood in your house is caused by sewer backup or a broken pipes, you need to make sure your personal homeowners insurance covers those problems. Also, ask your homeowners insurance company how to insure common walls of a townhouse in case your neighbor has a broken pipe or some other internal problem.