I agree your lease agreement seems a bit draconian. Are you in a flat or terraced? I bet your neighbours use their washers past 9...
I live in a terraced house smack in the middle of York city centre.
We love it - both the house and the location - and all the crazy stuff on the lease is worth it.
Our tenancy agreement seems to be a generic lease that everyone who rents from the letting agent gets - for example it says we can't make noise in the entranceway and we live in a house, not a flat - there is no entranceway.
Our inspections are every 6 months. I posted about them once before and I was told that these types of inspections are common with letting agencies.
I can kind of understand why they wouldn't want clothing hung out on a washing line though since they might think it looks tacky - our garden faces a holiday home that gets rented out to tourists.
Although we could just not have the washing out when they came to check the house. It's more that it rains so much we would still have to keep it inside the house a lot anyway.
Plus, we feed birds and they poo on things.
My neighbours on both sides are old people, one of whom knocks on our door to complain about the slightest noise - I posted about him when I moved in here last year - so he would definitely be bothered by a washing machine late at night.
He is in bed by 9 - he has complained about the TV being on too late in the evening.
The not Hoovering and not using a washing machine in the evening has more to do with his complaining than with the tenancy agreement.
The neighbours are lovely people but they have nothing to do all day.
Once, when I was home from work, I discovered that the old woman on the other side waits until the bin man comes on rubbish day and hands him her bags of rubbish. (This is not someone who is stressed about not having enough time to get her washing and her ironing done.)
She also knocked on our door twice (we didn't answer it the first time because we thought it might be the old man on the other side complaining about noise) to let us know that she thought we should water our tree - which we had just bought earlier that day.
FYI, we finally ordered a new washing machine to replace the old one that came with the house. (We were given permission to do so.) The old one is tiny, it takes forever to do a load, and it seems to be ruining some of our clothes, so that will help a lot.
I think I am just going to try to hang up my clothes more carefully and only iron on occasions where we need to see an important client or something like that.