I'm helping out a family member with some possible home improvements and just looking for experiences really. House is in a conservation area, but is not nationally or locally listed. The "best practice" guide is lengthy and excludes a lot of modernisation, including things for energy efficiency like double glazing and solar panels. Also, some parts are nonsense like paint colours that go against listed building requirements in some cases (I know people with listed properties). So I'm wondering how hard and fast is conservation area best practice and can it be challenged? Is conservation area worse than planning permission, and worse case, what are the consequences for not following best practice?