Builder bags must be placed so that they do not obstruct pedestrians and other passers by on sidewalks. To place a bag in a public space you also need a permit from the police.
If you have already placed a builder bag in a public space without a permit make sure to get it picked up and removed as soon as possible! And for the next one make sure to get a permit and place it in a correct way.
The main problems misplaced builder bags may cause
Risk of injuries
Littering and vermin
Get the correct permits
To place anything, for example a builder bag, in a public space you need a permit. Even with a permit you are not allowed to place bags anywhere, and basically never on the sidewalk.
Please contact the police to start the permit process. This web page has an explanation in English.
You can also read more about builder bags and how to place them correctly on the City of Stockholm web page. This page has more info on placement of builder bags. At the top right corner you can press “Languages” to get the page google translated.
Get your bags picked up
Usually info about how to get your builder bag picked up is written on the bag itself. If you do not know where to turn for removal of your bag you for example can use one of these companies;