Berlin Township is a separate municipality from Berlin Borough, and the figures here describe the township alone. Its housing mix records 72.0% single-family detached homes, 8.7% in buildings of two to nine units and 10.7% in buildings of ten to forty-nine units, so apartment buildings form a noticeable part of the stock alongside houses.
The median construction year is 1970 across 2,494 housing units. The age record shows 24.7% of homes built before 1960 and 16.0% built in 2000 or later, which leaves the largest part of the stock from the decades in between.
Tenure covers 2,494 occupied units: 67.1% are owner-occupied and 32.9% renter-occupied, so roughly one home in three is rented. Average household size is 2.38 people overall, with 2.54 in owner-occupied homes and 2.07 in renter-occupied homes. The recorded township population is 5,963 residents.
Because the township mixes detached houses with larger apartment buildings, it helps to mention the building type, floor and parking or access arrangements when asking for a written cleaning quote, alongside the rooms to be included.