IP18 6EX East Suffolk

Streets

• South Green, Southwold: 8 addresses
• Constitution Hill, Southwold: 1 address

Council tax

What each band costs in East Suffolk in 2026-27: Band D £2,335 a year on average, including the police, fire and any county and parish charges.

Homes by band in the neighbourhood around this postcode: most are in band D (33% of about 1,960 homes).

Sources: Valuation Office Agency, Council Tax: stock of properties, homes at 31 March 2026 (counts rounded to the nearest 10), for the neighbourhood (census area of about 700 homes) around it, not just this postcode; Ministry of Housing, Communities and Local 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, Southwold (council page). Extensions, demolition, some windows and doors, and work on trees need consent.
• Listed buildings within 100 m of this postcode: 34.
• Article 4 direction (removing permitted development rights): none recorded, though not every council has published theirs.
• Tree preservation orders: none recorded, though not every council has published theirs.
• Green belt: no.

Listed buildings

• 10 AND 12, PARK LANE, grade II
• 10A, 10B, 10C AND 10D, SOUTH GREEN, grade II
• 13 AND 15, PARK LANE, grade II
• 14 AND 14A, SOUTH GREEN, grade II
• 14, PARK LANE, grade II
• 16 AND 18, PARK LANE, grade II
• 18, QUEEN STREET, grade II
• 20, PARK LANE, grade II
• 21 AND 23, PARK LANE, grade II
• 24, SOUTH GREEN, grade II
• 6, PINKNEY'S LANE, grade II
• 7, SOUTH GREEN, grade II
• 9, PARK LANE, grade II
• ADNAMS WINE MERCHANTS, grade II
• BRADWELL HOUSE (NUMBER 6), grade II
• CANNON LODGE, grade II
• DARTMOUTH COTTAGE, grade II
• GREYFRIARS NORTH AND GREYFRIARS SOUTH AND REGENCY HOUSE, grade II
• HILL HOUSE AND WOLDSIDE, grade II
• HONEYSUCKLE COTTAGE (NUMBER 17), grade II
• IONA COTTAGE AND IONA FLAT, grade II
• LYDSTEP HOUSE AND COIGN, grade II
• MAY PLACE MAY PLACE COTTAGE (NUMBER 7A), grade II
• PROVIDENCE COTTAGE, grade II
• RED LION INN, grade II
• ROWAN COTTAGE, grade II
• SOLE BAY COTTAGE, grade II
• SOUTH GREEN COTTAGE, grade II
• SOUTH GREEN HOUSE, grade II
• SOUTH HOUSE, grade II

And 4 more.

Source: planning.data.gov.uk (Ministry of Housing, Communities and Local Government), compiled from councils and, for listed buildings, Historic England's National Heritage List. Conservation areas, Article 4 directions, tree preservation areas and the green belt are checked at each postcode's centre. Listed buildings and protected trees are counted within 100 m of this postcode. Councils publish Article 4 directions, tree preservation orders and brownfield registers to different standards, and some not yet. Planning applications are not here: there is no national open record of them yet.

Flood risk

No address in this postcode is in an area at high, medium or low risk of flooding from rivers, the sea or surface water. The rest are in areas at very low risk: less than a 0.1% (1 in 1,000) chance a year.

Rivers and the sea alone: no home is in an area at risk.

High: 3.3% (1 in 30) or more chance of flooding a year. Medium: 1% to 3.3%. Low: 0.1% to 1%. Very low: under 0.1%. The rivers and sea figures allow for flood defences. Counts cover whole postcodes, which can include other streets.

Flood zone for planning: no postcode centre is in flood zone 2 or 3.

Sources: Environment Agency Flood risk: postcode search tool data (loaded 29 October 2026), Risk of Flooding from Rivers and Sea: postcodes in areas at risk (loaded 29 October 2026) and Flood Map for Planning (loaded 28 October 2026). 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 the official long-term flood risk service.

Broadband

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