Can a simple reminder letter improve numbering of single-family residences?

To determine if a single mailing from the local volunteer fire department can increase the number of homes with proper, visible address numbering. Proper numbering is essential in rapidly locating a house during an emergency response.The study was conducted at a suburban/rural fire department providing EMS and fire suppression services to a 22 square mile area with residential mailboxes located at the street. During a hazard identification pre-plan tour, each house was examined and assigned a classification: (A) No number visible on the house or mailbox (improper); (B) Number on only one side of the mailbox (improper); (C) Number on both sides or the end of the mailbox, or visible on the house (proper). The homeowners of all residences with improper numbering (A or B) were sent a one-page letter, discussing the need for proper numbering. The tour was repeated six weeks later to determine whether deficiencies had been corrected. It was prospectively determined that a 25% improvement was sought.During the pre-plan tour, 73 houses were classified as type A, 454 as type B, and 1706 as type C. At the re-visit, 135 (26%) of the type A and B homes had been properly numbered. Correction of deficiencies was better at type A homes (37, or 51%) than at type B homes (98, or 22%) (p0.001 by Chi-square).For houses with improper numbering, a single mailing from the fire department can be effective in encouraging residents to post proper numbers.