On the map that HT has linked to in reply #10 there is a large label over the area that says "Charles Knowles & Co
Paper Hanging Factory".
In the 1910 Valuation survey, the ownership of 1-3 Omega Terrace is a little confusing, but it definitely refers to a C Knowles deceased, Executors of C Knowles, and also C.G Knowles. By this date the large building behind Omega Terrace is labelled 'Motor Works'. Chas. Knowles and Co. are occupiers of the nearby premises on the corner of Jubilee Street and Kings road.
In the survey the houses at nos 1-3 are described (under no. 3) as:
Brick built stucco double fronted house on East side of Terrace comprising:—
Top flr. 2 Rooms. Gd flr 2 - Rooms Bst 2 Rooms
Old drains(?). Good order.
Just taking the 1911 census as an example, no.1 has two households while nos 2 and 3 both have three households, suggesting that there was one household per floor.
No. 4 Omega Terrace was in a different league, being recorded as "house shop premises".
Brick built shop & upper part on
East side of Terrace comprising:—
Top flr, 2 Rooms
Gd. Flr. Shop & backroom
Fair order
No 4 was described as a “snug little premises” when advertised in a newsaper for sale as a tobacconists in 1865. The house sold for £1.2 million in 2007.