All depends of how many coats of paint have been applied, tensid stock a good paint removal acid, could take 3-4 days, do you need a scaffold.
I used an power pole , applied acid, then steamed off, primer was difficult to removed , i priced a terraced house we did at £1900.
To be honest i now try to avoid these jobs , no amount of money is enough.
Remember PPE and if its a terraced next door may need to be masked.