CH8 7PL Flintshire

Streets

• Well Street, Treffynnon / Holywell: 41 addresses
• Unnamed street near Well Street, Treffynnon: 1 address
• Coleshill Street, Treffynnon / Holywell: 1 address
• Unnamed street near Well Street, Treffynnon: 1 address
• Unnamed street near Well Street, Treffynnon: 1 address

Council tax

What each band costs in Flintshire in 2026-27: Band D £2,376 a year on average, including the police and community council charges.

Homes by band in the neighbourhood around this postcode: most are in band B (38% of about 1,120 homes).

Sources: Valuation Office Agency, Council Tax: stock of properties, homes at 31 March 2026 (counts rounded to the nearest 10; some small counts withheld), for the neighbourhood (census area of about 700 homes) around it, not just this postcode; Welsh Government, council tax levels 2026-27. Bands are charged as fixed shares of Band D; the actual bill depends on the parish and on discounts such as the single-person discount. Check a home's own band with the official council tax band checker.

Planning and heritage

• Conservation area: yes, Holywell. Extensions, demolition, some windows and doors, and work on trees need consent.
• Listed buildings within 100 m of this postcode: 13.
• Article 4 directions, tree preservation orders and green belt: Wales has no national record of these; the council's planning department holds them.

Listed buildings

• 1, grade II
• 1 Well Street, grade II
• 1A, grade II
• 2, grade II
• 2, grade II
• 2A, grade II
• 44 Well Street, grade II
• 46 Well Street, grade II
• 8 Well Street, grade II
• Old Vicarage, grade II
• Pillar Box on Pavement (outside no. 6 High Street), grade II
• Presbytery at Catholic Church of St Winefride, grade II
• St Winefride's Roman Catholic Church, grade II

Source: DataMapWales (Welsh Government): conservation areas compiled from the councils, and Cadw's listed buildings. Conservation areas are checked at each postcode's centre; some councils' boundaries in this layer have not been updated for years, so the council's own map is the one to rely on. Listed buildings are counted within 100 m of this postcode. Planning applications are not here: there is no national open record of them.

Flood risk

Rivers, the sea or surface water: of the 45 address points in this postcode, 0 at high risk, 6 at medium risk and 18 at low risk. Each counts once, at the higher of its rivers-and-sea and surface-water risk.

Rivers and the sea alone: none is in an area at risk. Surface water and small watercourses alone: 0 at high risk, 6 at medium risk and 18 at low risk.

High: 3.3% (1 in 30) or more chance of flooding a year. Medium: 1% to 3.3%. Low: 0.1% to 1%. The map allows for flood defences. Address points are every property record (UPRN) in the postcode, each counted if it is in an area or within 5 m of one (the maps stop at building walls); a few are not homes, such as garages, business units or caravan pitches. Counts cover whole postcodes, which can include other streets.

Flood zone for planning: no postcode centre is in flood zone 2 or 3. Welsh zones include an allowance for climate change.

Sources: Natural Resources Wales Flood Risk Assessment Wales: rivers, sea and surface water (loaded 30 October 2026), and Flood Map for Planning: rivers and sea (loaded 29 October 2026); address points from OS Open UPRN and the ONS UPRN Directory. Flood zones are checked at each postcode's centre point. These are models of areas, which their publishers say are not suitable for showing whether an individual property is at risk, and they do not cover flooding from sewers or drains. Check an address on Natural Resources Wales's flood risk map.

Broadband

Superfast 100%, ultrafast 93%, gigabit 93% of premises; 0% cannot get 10 Mbit/s. Ofcom Connected Nations, data as at January 2026.