>>> Just like where does Craig live?
19a Victoria Street:
https://coronationstreet.fandom.com/wiki/19a_Victoria_Street
>>>Does Maria still have a child as they are never seen
Liam Jr lives with his mother, and with Emma & Bethany, at 2a Coronation Street:
https://coronationstreet.fandom.com/wiki/Liam_Connor_Jr.
https://coronationstreet.fandom.com/wiki/2a_Coronation_Street
>>> Where does Leanne actually work?
She's a PA at Barlow Legal Services:
https://coronationstreet.fandom.com/wiki/Leanne_Battersby
https://coronationstreet.fandom.com/wiki/Barlow_Legal_Services
>>> How many bedrooms are seriously in the Platt house??
Not a clue, but Martin & Gail must have got a real bargain when they bought it for £38,000 in 1991. I sold a house in Sheffield (in an area not greatly different from Coronation Street) for £26,000 in 1991. It was a 2-up, 2-down terrace, with one of the upper bedrooms converted to a bathroom but with an extra bedroom (with just a skylight) in the attic. However it needed re-roofing and I sold it cheaply as the guy buying it was (and still is) a beneficiary of my will. A more realistic price for a house in that road would have been the £42,000 that my near-neighbour got for his 2-bedroom house in that same year.
So (unless Martin & Gail really did get an incredible bargain) it would seem unlikely that 8 Coronation Street has more than 2 or, at the very most, 3 bedrooms. (The type of housing depicted along Coronation Street would also seem to be incompatible with more than 2 or 3 bedrooms). So it must be very crowded with 9 people living there!
https://coronationstreet.fandom.com/wiki/8_Coronation_Street
Ruddy 'eck! Can you tell that I'm really, really bored?
;-)