My house has been on the market for two weeks and we so far have had 6 viewings.
Two separate people provided feedback that the house needs an extension. I find this one very tricky to understand because our floor plan and room dimensions are on the sale advert, so it's clear what the room sizes are. In my road, a handful of houses have had a downstairs extension, most have not, so it is a possibility.
I was asked by another viewer why I hadn't extended. Our house has always suited our needs but we're relocating and had always intended to in the future (we've lived here for 8 years). I didn't wish to disclose this to the viewer either but we inherited money from the death of a relative recently, making our move possible. An extension was never something we could have afforded on our salaries before.
Another viewer(family of 3) said they were looking to spend £500k on a property - mine is up for £400k - so was too small for them. I find it difficult again as to why they viewed when floor plan and room sizes are on Rightmove. FWIW, I live in a fairly desirable town in Essex and £400k doesn't get you a sprawling house and neither does £500k.
Very difficult when the feedback isn't really things we can act upon!