Mr. and Mrs. Richard Bucket were decidedly middle class and their home in Coventry reflected this rather well. Richard Bucket was a civil servant (on local council) but didn't have a title nor was in same league (or pay grade) as say Sir Humphrey Applebee.
House used for outdoor next door location shots in KUA was recently for sale and we can see how place is laid out.
In keeping with often dear housing costs in UK the home might seem compact by American standards, but many in England make do. In this instance owners took down wall between dining area and kitchen to make an open floor plan. Notice they do have a cooker (range) but fridge still is compact under counter model.
Hyacinths' house differs in that it was single floor with all bedrooms on same ground floor level. This would be another reason why home (and that kitchen) seems cramped by American standards. To fit two bedrooms (assuming Sheridan had one of his own), sitting room, dining room and kitchen all on one floor in a comparatively small home takes work.
Whole joke about Hyacinth Bucket was her being decidedly middle class (from a low or working class background) desperately trying to be something she wasn't; upper class. To her credit (and that of set designers) Mrs. Bucket did her best to create some sort of illusion of upper class via furniture and furnishings, but that's far as things went.
Edwina Monsoon OTOH was quite well off, this both in her own right due to her businesses and fact she was bleeding both her ex-husbands dry for years in maintenance and child support payments.
Hyacinth Bucket would never have moved to Shepard's Bush (Holland Park) back when it was affordable to do so as area didn't have status and cachet she craved. Eds bought early when prices were low (or as Saffy says "before everyone else moved here), so she got a bargain. But remember again Eds had both of her ex husbands; Marshall and Justin paying for that house. Well until they found out and cut her off.
https://www.dailymail.co.uk/propert...featured-Keeping-Appearances-sale-Zoopla.html