Thinking of an extension down the side of the house (1930s semi) which would give us an internal width of 1.8m/6ft. Plan is for study, enlarged downstairs loo (currently under the stairs) and storage (no garage at the mo).
Have already extended to rear (double storey) so have large open plan kitchen diner lounge, small separate utility, separate lounge and 4 bedrooms - but have 3 children so no spare room. Should have gone out to the side at the same time but couldn't afford it. The side extension would simply be added on, we wouldn't want to "un-do" any of the work we've already done to re-arrange the layout of the existing house. But desperate for a study (even with easing of lockdown, one or both of us will be WFH for a while - H currently in front lounge (needs to be on the phone about 4hrs a day), I'm in our bedroom. Its all getting a bit much.
So, we'd only get 1.8m (by about 12m long). Does it really add anything? Is the faff having lived through one extension already and expense worth it for a really narrow study etc? H says WFH will be the norm soon so if we need to sell (although no plans for several years) it'll make the house more saleable albeit not necessarily worth more.