Two areas of Cardiff will soon be subject to a ban on putting up to let boards.
These parts of the city have a large proportion of private rental sector properties.
The Welsh Government has removed the presumed consent status for the suburbs of Cathay and Plasnewydd, meaning that the local authority in the city must give permission before these boards are displayed from October.
Cardiff City Council says that these areas have over 60% of private renting households, according to the 2011 Census.
The Council studied a report last year that claimed despite to let boards being used effectively around the UK without significant problems, the two areas of Cardiff specified are largely occupied by students. This means that tenancies are mainly 12 months long and most boards are erected in early summer each year.
The Council also states that burglaries in these areas are double the average rate of other parts of the city.
A study in July 2014 found that there were 1,488 to let boards being displayed in the streets of the two areas. This is out of around 7,000 homes.
The Council has revealed that the ban will be enforced from 1st October until 31st December, inclusive. After this period, the boards will have to comply with a uniform size and design.