Cellars are not as popular as they once were. Most people no longer wish to access their cellar or basement via a door from the outside. Instead, people try to secure their home by allowing access to the basement or cellar through the interior of the home, not the exterior.
If you don't own your home, you may not be aware that sidewalks are maintained not by the city, but by the people who own the property abutting them. If you suffer an injury due to broken, slanting, or otherwise poorly installed or maintained sidewalks, the city is not liable for your injuries. Instead, it is the property owner who may be held liable for any damages you incurred as a result of improperly maintained sidewalks. Sidewalk maintenance is critical to city safety and accessibility.