The puzzle takes you to a quiet, residential, suburban location. You do not need to go on private property, but you should be respectful of the residents. Do not seek this cache at night. Please use care when replacing the final container.
Note the last two digits of the street address associated with the initial coordinates. To find the new north coordinates, take these last two digits and subtract 41. Subtract this number from the original north coords. To find the new west coordinates, subtract 21 from these last two digits. Add this number to the original west coords.