LL21 9UP Denbighshire

Streets

• B5105, Sir Ddinbych - Denbighshire: 13 addresses
• Unnamed street, Llanfihangel Glyn Myfyr: 5 addresses
• B5105, Sir Ddinbych - Denbighshire: 2 addresses
• B5105, Sir Ddinbych - Denbighshire: 1 address
• Unnamed street, Bettws Gwerfil Goch: 1 address

Council tax

What each band costs in Denbighshire in 2026-27: Band D £2,339 a year on average, including the police and community council charges.

Homes by band in the neighbourhood around this postcode: most are in band E (27% of about 700 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: no postcode centre in this postcode is in one.
• Listed buildings within 100 m of this postcode: none.
• Article 4 directions, tree preservation orders and green belt: Wales has no national record of these; the council's planning department holds them.

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

Natural Resources Wales's flood risk map has not been checked against this postcode yet.

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 0%, ultrafast 0%, gigabit 0% of premises; 43% cannot get 10 Mbit/s. Ofcom Connected Nations, data as at January 2026.