1960-1980
From 1960 through to 1967 all the episodes of Coronation Street were filmed in the Granada studios in Manchester. The houses were reduced to 3/4 scale and the actors had to walk slower than normal so that it looked real. The street was too big to be set up in one go, it was split into two halves the pavement and road was actually painted onto the floor, although it was small there were some dramatic episodes filmed on this small set, e.g. the collapse of no.7 in 1965 and the train crash in 1967.
in 1967 Granada made an outdoor set on some old railway sidings in central manchester, the transition from the studio to the outdoor set was made easier by linking it in with a storyline in which the raincoat factory and mission hall were demolished and new houses built on the street.
1968 saw the use of the outdoor set for the first time, the only real difference was that there was natural light on the street. The actors disliked the set and named it 'the coldest place on earth' because there was a constant wind straight down the 'street'. Granada preferred not to actually film on the outdoor set for two reasons, one - Filming outdoor was a lot more expensive than filming in the studio, two - The actors disliked filming on site due to the cold winds.
1980-Present
in 1982 there was a full scale set built in the Granada backlot, the cobbles ran in the right direction alongt the houses, The set was officially opened by Queen Elizabeth II.
Because the new set was intended to be permanent Granada reclaimed Salford brick and the roof slates were ment to look real. However the houses dont have many interior walls and ones that dont take a major role in the show are used as store rooms for props and offices for writers.
The take away, betting shop and butcher shop are all built to be filmed in. The chimneys were originaly fibreglass because there wasnt enough support for brick ones, but in the preperation for High Definition tv they were converted to brick.
In 1989 the factory and community centre were demolished and were replaced with 3 new houses 2 shops a garage and a new factory. This was the brainchild of new executive producer, David liddiment.