Answer
Do I need permission for artificial grass in my front garden?
Usually no, but the front-garden surface-water rules still apply, so it must drain on site.
In short
Artificial grass itself does not usually need planning permission, but the surface-water rules for front gardens still apply: it should be laid so water drains through or to a permeable area rather than running to the road, especially over a larger area. We lay it on a free-draining base.
A note
General guidance, not advice. Rules vary by site, and Article 4 directions or conditions can change what applies. Check with your local authority and the Planning Portal.
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