Civil Registration.
Hamburg Civil registration records and images are available on Ancestry.com. Collection is being indexed and updated until complete.
Help in determining a registration office for the area of Hamburg can be found at this link. pdf
A master index to Hamburg civil registration records can be found online at the Staatsarchiv Hamburg website www.hamburg.de. A direct link is listed below:
Hamburg suburbs and gazetteer of places: http://wiki-de.genealogy.net/Hamburg#gaz
Death notices for the previous six months appearing in the Hamburger Abendblatt can be found online at: Death notices. Do a search on a surname or browse through the alphabetical lists.