Dover is the largest city on Perham’s list and the northern end of the New Hampshire range, up the Spaulding Turnpike from Kittery. The old Cocheco mill buildings downtown have been turned into offices, condos and apartments, and Central Avenue is lined with restaurants, shops and professional offices, which makes Dover a mix of office cleaning and residential work in the same few blocks. Wentworth-Douglass Hospital and the medical and professional offices around it book evening cleans. The residential neighbourhoods, from the older streets off Silver Street and Central Avenue to the newer subdivisions toward Somersworth and Madbury, book weekly and bi-weekly house cleaning at the published bedroom price. Mill-conversion condos with big multi-pane windows and original wood or polished concrete floors are exactly the buildings where window washing and proper floor care matter, and both are booked on their own or added to a recurring clean.