You can extend in Conservation Areas but your Permitted Development rights are limited so any application would need to be submitted as a Planning Application and comply with the Waltham Forest's SPD, and the relevant Conservation Area Design Guide.
In reality, this manifests itself that you cannot do monstrous rear/infill extensions and full-width dormers up to the roof ridgeline. House type depending, the first should be fine and there are loads of precedents for extensions along with internal remodelling works that meet most people's briefs. The second potentially limits loft/dormer extensions and it depends on the floor-ceiling height/stair placement. As others have mentioned, look at recent applications along the road for a good indication of what will be allowed.
@Tenderloin
You can extend in Conservation Areas but your Permitted Development rights are limited so any application would need to be submitted as a Planning Application and comply with the Waltham Forest's SPD, and the relevant Conservation Area Design Guide.
In reality, this manifests itself that you cannot do monstrous rear/infill extensions and full-width dormers up to the roof ridgeline. House type depending, the first should be fine and there are loads of precedents for extensions along with internal remodelling works that meet most people's briefs. The second potentially limits loft/dormer extensions and it depends on the floor-ceiling height/stair placement. As others have mentioned, look at recent applications along the road for a good indication of what will be allowed.