Wondering if anyone lives in the area whether they knew if either of these houses were still there, and if they were the originals from the dates below or whether they've been replaced with newer houses. Looking at the live maps view, seems they might be newer than the dates I have?
Unsure if this will help, but it's a good resource to have: http://www.toxteth.net/maps/index.htm There are some amazing old streetview photos - click on the red arrows on the maps.
If you find Warwick Street on Google Maps and switch to satellite view, you will see that it is long gone.
Ken
UPDATE: 147 Wellington Road is next but one to the corner of Greaves Street on this map - http://www.toxteth.net/maps/liverpool/lpool4c.htm on the corner nearest the school, which was John the Baptist National School (in 1881).
So Ken, it looks like if you click on the second arrow up Wellington Road, which shows a photo of the school, you JUST miss out on seeing the house that Spongebob is looking for!