Original: Around a quarter of Sheffield's housing stock is social rented either from the council or registered housing providers.
Simplified: About a quarter of Sheffield's housing invesments is social rented either from the council or registered housing providers.
Simplified: Around a quarter of Sheffield's houses are  social rented either from the council or registered housing providers.
Simplified: Around a quarter of Sheffield's housing is social housing rented either from the council or registered housing providers.