The short answer
Because Hilperton lies in Wiltshire, planning queries go to Wiltshire Council, while notifiable roof work is checked by Wiltshire Council's building control team or by a registered building control approver. A listed building also needs listed building consent for alterations touching its character.
Plenty of roof jobs in Hilperton never touch the planning system. A few new tiles, a refixed ridge, a length of replacement flashing: that is upkeep. Bigger or more visible work follows other rules, laid out below, and it pays to understand them before you sign a contract.
Q3.1How large can a re-roof grow before it needs sign-off?
The Planning Portal sets two limits for this. Stay under 25 per cent of the total building envelope and under 50 per cent of the roof, and re-covering normally needs no building control application. Go past either mark and you need approval, with better insulation possibly following. Separately, a covering that makes the roof 15 per cent or more heavier needs approval. Tell us what you are planning and we place the job against those limits, then look after the Building Regulations notification wherever work is notifiable.
Q3.2What about the two conservation areas and Hilperton House?
Putting back what was there leaves a street looking as it did, so a repair that copies the existing roof seldom needs a planning application. Changing the material, or adding something new to a slope people can see, is another matter, so raise it with Wiltshire Council before the job is priced. Hilperton House is listed Grade II*; on a listed building, works altering its special character need listed building consent, covering included.
Q3.3Does the parish church follow different rules?
The parish church here is Church of England, and a church that is in worship use sits under the ecclesiastical exemption, with changes decided through the faculty system rather than by the council. If you look after the church or a building it owns, start with the diocese. A written survey from us can go with the request.