We have been in 2 private let properties in the past, for 4.5 years altogether - 2 years in one, 2.5 in the other, and the rent went up every year in both properties.
Our first private let house was £575 a month rent, and at the end of the year he put it up to £625. Then at the end of the second year he sold it so we had to find somewhere else.
So we found another 3 bed house. For £600 a month.
Annoyingly, the property agent said (when we moved into the second property,) that the rent is £600 a month, and it shouldn't go up because she didn't raise the previous tenant's rent in the 4 years he was there.
Fast forward a year, and she put it up to £635 a month. Then the following year £675 a month! Almost a 15% rise in 2 years. Our wages didn't go up that much though! So when the third year came along, she put it up to £700, and there were other properties that were £100 to £125 a month cheaper, with the same amount of bedrooms, and in a similar area.
She was taking the piss, so we refused to sign the tenancy agreement, and let it fall into a month-by-month tenancy (it has a name but I can't remember it!)
It means you can leave whenever you want and are only obliged to give one month's notice, but the landlord can get you out in only 2 months. We said we didn't wanna sign for another year, as we were getting high up on the social housing list (we had been on it for 4 years.)
We really looked after that house, put new carpets in 2 bedrooms, put curtain poles up, painted 3 or 4 rooms that were jaded and a bit shoddy, and paid our rent a week early every month.
When things went wrong (like a hole in the garage roof, and a blown down fence, or a broken drainpipe or blocked guttering,) she kept saying she can't afford to repair it as the rent only just covers the mortgage on the place!
She kept saying 'I don't make anything on this you know; I barely break even! We thought 'yeah not our fault though is it?'
DH ended up doing the repairs himself!
So anyway, the rent stayed at £675 a month, but the property agent said if we have not moved/been accepted for social housing within 3 or 4 months, we will have to sign the new £700 a month contract, or she will ask us to leave. We bid furiously on every suitable 'social housing' property for 4 months, and eventually me and DH got offered a little social housing property... £350 a month. Half of what she was charging.
This landlady who tried to put our rent up to £700 a month (for the third year in,) tried to re-let our house. Ironically, the house stood empty for 5 months, losing her £3500 in rental income. It was a bit of a rough area, but we knew a few people from there, and our kids were friends with a few kids from there, so we were quite happy there, and our neighbours were lovely.
Yeah we would eventually have left as we did want the security of social housing eventually, but if she had kept the rent the same as it was when we first moved there, we would not have been bidding on so many properties, and may have stayed another 2 or 3 years. (And may possibly have given her more notice/warning to leave than the one month...)