IP20 9BE South Norfolk

Streets

• Old Market Place, Harleston: 34 addresses
• Mendham Lane, South Norfolk: 1 address
• Briar Walk, Harleston: 1 address
• Keeleys Yard, Harleston: 1 address
• Shipps Close, Harleston: 1 address
• Green Dragon Lane, Harleston: 1 address

Council tax

What each band costs in South Norfolk in 2026-27: Band D £2,483 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 B (36% of about 1,200 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; 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, Harleston Conservation Area (council page). Extensions, demolition, some windows and doors, and work on trees need consent.
• Listed buildings within 100 m of this postcode: 61.
• 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

• 16 AND 18, OLD MARKET PLACE, grade II*
• SWAN HOTEL, grade II*
• 1 AND 3, MENDHAM LANE, grade II
• 1, BRIAR WALK, grade II
• 1, KEELEY'S YARD, grade II
• 10 AND 12, OLD MARKET PLACE, grade II
• 10 Market Place, grade II
• 10, CHURCH STREET, grade II
• 11, BROAD STREET, grade II
• 11, OLD MARKET PLACE, grade II
• 12, THE THOROUGHFARE, grade II
• 14, OLD MARKET PLACE, grade II
• 14, THE THOROUGHFARE, grade II
• 16, THE THOROUGHFARE, grade II
• 17, OLD MARKET PLACE (See details for further address information), grade II
• 17, THE THOROUGHFARE, grade II
• 18, THE THOROUGHFARE, grade II
• 2 AND 4, THE THOROUGHFARE, grade II
• 20, 22 AND 24, OLD MARKET PLACE, grade II
• 21, THE THOROUGHFARE, grade II
• 3 AND 5, BROAD STREET, grade II
• 3 AND 5, OLD MARKET PLACE, grade II
• 3 AND 5, UNION STREET, grade II
• 3, 5 AND 7, THE THOROUGHFARE, grade II
• 4 AND 6, OLD MARKET PLACE, grade II
• 5, CHURCH STREET, grade II
• 6 AND 8, EXCHANGE STREET, grade II
• 6 AND 8, THE THOROUGHFARE, grade II
• 6, CHURCH STREET, grade II
• 7 AND 9, OLD MARKET PLACE, grade II

And 31 more.

Brownfield land registered for housing within 1.0 km

• Maltings, Tudor Rose Way, Harleston, permissioned (280 m)
• Maltings, Tudor Rose Way, Harleston, Planning Permission (290 m)
• Apollo Club, Mendham Lane, Harleston, Planning Permission (330 m)
• Apollo Club, Mendham Lane, Hartleston, not permissioned (330 m)
• Former Howard Rotavator Works, Mendham Lane, Harleston, Local Plan Allocation with Planning Permission (510 m)
• Former Howard Rotavator Works, Mendham Lane, Harleston, permissioned (520 m)
• Land off Station Hill, Planning Permission (560 m)

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

Rivers, the sea or surface water: in this postcode, 0 addresses are in areas at high risk, 0 at medium risk and 3 at low risk. Each address counts once, at the higher of its rivers-and-sea and surface-water risk.

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 96%, ultrafast 96%, gigabit 96% of premises; 0% cannot get 10 Mbit/s. Ofcom Connected Nations, data as at January 2026.