Castleton Way Mid Suffolk

202 addresses across 22 postcodes (IP23), about 1.1 km (0.7 miles) long, classed as a minor road. USRN 25500314.

  • Sales: 47 recorded sales since 1995; in 2026 the median was £256,000 across 1 sale.
  • Energy: 110 homes have an energy certificate (A: 27, B: 57, C: 11, D: 14, E: 1).
  • Flood: 4 addresses on its postcodes are in areas at high or medium risk of flooding from rivers, the sea or surface water.
  • Council tax: Most homes around it are in council tax band B; Band D in Mid Suffolk costs £2,317 a year in 2026-27.
  • Broadband: Gigabit broadband is available to 0% to 100% of premises.
  • Transport: The nearest railway station is Diss, about 5.5 km (3.4 miles) away in a straight line.
  • Green space: The nearest park or garden is about 1 km (0.6 miles) away.
  • Air: Background air pollution in 2024 was 5.9 µg/m³ of nitrogen dioxide and 6.8 of PM2.5, within UK legal limits.
  • Height: Its addresses are 31 to 47 m above sea level.
  • Noise: 1 of its 207 addresses is modelled at 55 dB or more from road traffic.
  • Doctors: The nearest GP surgery is Eye Health Centre, about 640 m (0.4 miles) away.
  • People: About 1,910 people lived in the census areas around it in 2021; 74% of households owned their home and 26% of adults held a degree or other higher qualification.

Sales on this street

Source: HM Land Registry Price Paid Data, sales registered up to 28 August 2026, loaded 28 October 2026. Sales reach the register two weeks to two months after completion, so the last two months are incomplete. Matched by postcode and street name.

Sales by year (standard sales only; repossessions and buy-to-let transfers excluded)
YearSalesMedian priceLowestHighest
20261£256,000£256,000£256,000
20251£320,000£320,000£320,000
20242£520,000£390,000£650,000
20231£235,000£235,000£235,000
20222£328,750£272,500£385,000
20213£225,000£190,000£400,000
20181£267,500£267,500£267,500
20171£212,000£212,000£212,000
20163£200,000£179,000£387,500
20151£155,000£155,000£155,000
20143£242,500£230,000£440,000
20131£235,000£235,000£235,000
Most recent sales (47)
DateAddressTypePriceNotes
17 Apr 2026PIPPIN COTTAGE IP23 7BJTerraced£256,000
6 Aug 20257 IP23 7BLDetached£320,000
30 Sep 20241A IP23 7BJDetached£650,000
26 Jul 20241 IP23 7BJDetached£390,000
18 Oct 20231, MILL HOUSE, 25 IP23 7BLSemi-detached£235,000
15 Dec 20228 IP23 7BLDetached£385,000
29 Jul 202212 IP23 7BLSemi-detached£272,500
1 Feb 2022PREMISES AT, HARTISMERE HOSPITAL IP23 7BHOther£70,200,000Leasehold. Not a standard sale (repossession, buy-to-let or transfer).
9 Jul 20213 IP23 7BJDetached£400,000
20 Apr 202110 IP23 7BLSemi-detached£190,000
13 Apr 20211, MILL HOUSE, 25 IP23 7BLSemi-detached£225,000
30 Jul 20184 IP23 7BJDetached£267,500
4 Jul 2017RODEEN IP23 7BJTerraced£212,000
16 Sep 201612 IP23 7BLSemi-detached£179,000
4 Mar 2016PIPPIN COTTAGE IP23 7BJTerraced£200,000
25 Feb 2016OAK TREE HOUSE IP23 7BJDetached£387,500
21 Aug 201513 IP23 7BLSemi-detached£155,000
15 Jan 2015PREMISES AT, HARTISMERE HOSPITAL IP23 7BHOther£1,207,903Leasehold. Not a standard sale (repossession, buy-to-let or transfer).
3 Oct 20145 IP23 7BJDetached£242,500
30 Sep 20141A IP23 7BJDetached£440,000
11 Mar 20144 IP23 7BJDetached£230,000
2 Aug 20136 IP23 7BLDetached£235,000
29 Jun 20113 IP23 7BJDetached£218,500
27 Sep 2007HEATHER COTTAGE IP23 7BJTerraced£165,000
30 May 20076 IP23 7BLDetached£230,000
11 May 200719 IP23 7BLSemi-detached£154,500
20 Feb 200710 IP23 7BLSemi-detached£157,500
4 Jul 20069 IP23 7BLSemi-detached£157,500
7 Oct 20052 IP23 7BJSemi-detached£175,000
12 Feb 2004JUNIPER COTTAGE IP23 7BJDetached£125,000
7 Oct 20035 IP23 7BJDetached£176,000
30 Aug 2002CAMELOT IP23 7BJSemi-detached£96,500
9 Aug 20021 IP23 7BJDetached£170,000
5 Aug 2002RYEDALE IP23 7BJTerraced£99,250New build.
26 Jul 2002JUNIPER COTTAGE IP23 7BJDetached£99,750New build.
28 Jun 2002OAK COTTAGE IP23 7BJTerraced£95,750New build.
21 Jun 2002PIPPIN COTTAGE IP23 7BJTerraced£96,500New build.
12 Jun 2002RODEEN IP23 7BJTerraced£95,000New build.
31 May 2002HEATHER COTTAGE IP23 7BJTerraced£96,500New build.
19 Oct 20019 IP23 7BLSemi-detached£72,500
10 May 200119 IP23 7BLSemi-detached£65,000
21 Feb 2001OAK TREE HOUSE IP23 7BJDetached£187,500New build.
24 Sep 199915 IP23 7BLSemi-detached£64,000
22 Dec 19989 IP23 7BLSemi-detached£49,000
6 Aug 19981A IP23 7BJDetached£215,000
24 Oct 19971, MILL HOUSE, 25 IP23 7BLSemi-detached£47,000
13 Aug 19961 IP23 7BJDetached£58,250

Energy performance certificates

Source: Energy Performance of Buildings Register (MHCLG), register as at 1 November 2026. Latest certificate per address; certificates last ten years, so the oldest here dates from December 2012 and some homes have none. Address data © Ordnance Survey and Royal Mail, shown for understanding the energy efficiency of buildings only.

110 homes with a current certificate; median floor area 93 m². Most common: House, detached (49); House, semi-detached (31); Bungalow, detached (14). Built: 2022 (46); 2023 (22); 2025 (16). Tenure at assessment: owner-occupied (105); rented (social) (3); rented (private) (1).

Each home's certificates and sales (18 addresses)

Council tax

What each band costs in Mid Suffolk in 2026-27: Band D £2,317 a year on average, including the police, fire and any county and parish charges.

ABCDEFGH
£1,545£1,802£2,059£2,317£2,832£3,347£3,861£4,634

Homes by band in the neighbourhoods around this street: most are in band B (22% of about 2,850 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 3 neighbourhoods (census areas of about 700 homes each) around it, not just this street; 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, Eye (council page). Extensions, demolition, some windows and doors, and work on trees need consent.
  • Listed buildings on or by this street: 3.
  • 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

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 on or by this street. 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.

Roadworks

Started, not reported finished by 30 September 2026

  • 21 August 2026 to 30 October 2026: ESSEX AND SUFFOLK WATER, Utility repair and maintenance works, two-way signals, on the carriageway (immediate - urgent works)

Finished in the last three months

  • 14 September 2026: SUFFOLK COUNTY COUNCIL, Highway repair and maintenance works, no carriageway incursion, on the footway (minor works)

Source: Department for Transport, Street Manager open data, permits and works up to 30 September 2026. It is published once a month, so works arranged or started since then are not shown, and dates are the ones planned unless the works have started or finished. Emergency works are often permitted after they begin.

Flood risk

Rivers, the sea or surface water: in this street's postcodes, 3 addresses are in areas at high risk, 1 at medium risk and 5 at low risk. Each address counts once, at the higher of its rivers-and-sea and surface-water risk.

Rivers and the sea alone: of the 13 homes the Environment Agency counts, 1 are in areas at high risk, 0 medium, 0 low and 0 very low.

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: at least one postcode centre is in flood zone 3. Zone 3 is a 1% (1 in 100) or greater annual chance of flooding from rivers, or 0.5% from the sea, ignoring defences.

PostcodePlanning zoneAddresses at high / medium / low riskGroundwater
IP23 7FEnot in 2 or 3
IP23 7BLnot in 2 or 3 2 / 0 / 0 unlikely
IP23 7BJnot in 2 or 3 0 / 1 / 2 unlikely
IP23 7GFnot in 2 or 3
IP23 7GAnot in 2 or 3
IP23 7FZnot in 2 or 3
IP23 7GEnot in 2 or 3
IP23 7FDnot in 2 or 3
IP23 7FJnot in 2 or 3
IP23 7FLnot in 2 or 3
IP23 7FFnot in 2 or 3
IP23 7FHnot in 2 or 3
IP23 7DDnot in 2 or 3 0 / 0 / 0 unlikely
IP23 7BHnot in 2 or 3 0 / 0 / 0 unlikely
IP23 7FGnot in 2 or 3
IP23 7FPnot in 2 or 3
IP23 7FUnot in 2 or 3
IP23 7DEnot in 2 or 3 0 / 0 / 2 unlikely
IP23 7FQnot in 2 or 3
IP23 7AQzone 3 1 / 0 / 1 unlikely
IP23 7FNnot in 2 or 3
IP23 8BWnot in 2 or 3 0 / 0 / 0 unlikely

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.

© Environment Agency copyright and/or database right 2026. All rights reserved. Some features are based on digital spatial data from the Centre for Ecology & Hydrology, © NERC (CEH); the postcode data is produced in part from PAF® and Multiple Residence Data, © Royal Mail Group Limited.

Height above sea level

The street's 207 addresses are between 31 m and 47 m above sea level (39 m on average); the ground rises about 16 m from the lowest to the highest.

Source: Ordnance Survey, OS Terrain 50, July 2026: the height of the ground on a 50 m grid, read at each address, in metres above Ordnance Datum (mean sea level at Newlyn). It is the lie of the land, not floor or threshold levels, and is accurate to a few metres. Being low-lying is not in itself a flood risk; the flood section above says what the flood maps show.

Broadband

Source: Ofcom Connected Nations, data as at January 2026. Percentages are of premises in each postcode that can get the service, not take-up or speed achieved.

Availability by postcode (% of premises)
PostcodeSuperfast (30 Mbit/s+)Ultrafast (300 Mbit/s+)GigabitBelow 10 Mbit/s
IP23 7AQ100%100%100%0%
IP23 7BH100%100%100%0%
IP23 7BJ100%53%53%0%
IP23 7BL100%96%96%0%
IP23 7DD100%50%50%0%
IP23 7DE100%100%100%0%
IP23 7FD100%87%87%0%
IP23 7FE100%93%93%0%
IP23 7FF100%100%100%0%
IP23 7FG100%100%100%0%
IP23 7FH100%100%100%0%
IP23 7FJ100%100%100%0%
IP23 7FL100%90%90%0%
IP23 7FN100%100%100%0%
IP23 7FQ100%100%100%0%
IP23 8BW0%0%0%0%

Getting around

Sources: Department for Transport, NaPTAN (every public transport stop), as at 31 October 2026; Office of Rail and Road, Estimates of station usage 2024–25 (which stations are on the National Rail network, and their journeys: entries and exits in the year to March); OurAirports (public domain, kept by volunteers); car parks and charging points from Overture Maps Foundation, release 2026-10-21.0, which gathers business listings from Meta, Microsoft, Foursquare and others: not an official register, so some will be missing, private or out of date. Distances are straight lines from the middle of the street, not routes, and say nothing about how often anything runs. Stations opened since the end of ORR's year appear when ORR publishes the next one, each December; heritage railways are left out.

NearestDistance
Railway stationDiss 701,000 journeys in 2024–255.5 km (3.4 miles)
Bus stops0 stops within 400 m (0.2 miles), 4 within 800 m (0.5 miles); nearest High School Eye410 m (0.3 miles)
Bus or coach stationBus Station Diss5.8 km (3.6 miles)
EV charging pointsMFG Charging Station5.5 km (3.4 miles)
Airport with scheduled flightsNorwich Airport NWI40.5 km (25 miles)
Nearest large airportLondon Stansted Airport STN78.5 km (49 miles)

Local services

Sources: NHS Organisation Data Service, as at 31 October 2026: GP practices, community pharmacies and dental practices with an NHS contract, open now, each placed at the centre of its postcode; hospitals are NHS trust and Welsh health board sites named as hospitals, and may not have an emergency department. Police stations and cash machines from Overture Maps Foundation, release 2026-10-21.0, which gathers business listings: not an official register, so some will be missing or out of date. Distances are straight lines from the middle of the street. Nothing here says whether a practice is taking new patients or a dentist new NHS patients.

NearestDistance
GP surgeries1 practices within 1.6 km (1 mile); nearest Eye Health Centre640 m (0.4 miles)
Pharmacies1 pharmacies within 1.6 km (1 mile); nearest Wellbeing Pharmacy1.1 km (0.7 miles)
NHS dentistsDiss Dental Care Centre5.6 km (3.5 miles)
HospitalHartismere Hospital610 m (0.4 miles)
Police stationNorfolk Police - Diss Public Enquiry Office5.9 km (3.7 miles)
Cash machinesEye Cashzone1.2 km (0.7 miles)

Parks and green space

Source: Ordnance Survey, OS Open Greenspace, April 2026: public parks and gardens, play spaces, playing fields and allotments, with their entrances. Distances are straight lines from the middle of the street to a site's nearest entrance (or its edge where none is recorded), not walking routes; sizes are the area OS maps for each site. Some sites, such as school playing fields, may not be open to the public.

NearestDistance
Park or gardenUnnamed 8,950 m²1 km (0.6 miles)
Play areaUnnamed 440 m²1 km (0.6 miles)
Playing fieldUnnamed 3.6 ha900 m (0.6 miles)
Allotments1 within 800 m (0.5 miles); nearest Unnamed 1.4 ha490 m (0.3 miles)

Landmarks

The nearest historic landmark is Eye Castle, the remains of a motte and bailey castle and its defensive ditch 120m west of St Peter's Church, a scheduled monument, 1.4 km (0.9 miles) east. 5 listed buildings are within 1 km (0.6 miles).

Historic places
NameWhat it isFrom the middle of the street
Eye Castle, the remains of a motte and bailey castle and its defensive ditch 120m west of St Peter's ChurchScheduled monument1.4 km (0.9 miles) east
Remains of Eye Priory at Abbey FarmScheduled monument1.9 km (1.2 miles) east
Natural landmarks within 5 km (3.1 miles)
NameWhat it isFrom the middle of the street
Long PlantationWood1.7 km (1.1 miles) south-west
Fir GroveWood1.7 km (1.1 miles) north-east
Moorhall PlantationWood1.8 km (1.1 miles) south
Dragon HillHill2.8 km (1.8 miles) east
Thorndon PoolLake or reservoir3.8 km (2.3 miles) south
Nut Tree ValeValley4.8 km (3 miles) east

Sources: Historic England's registers through planning.data.gov.uk (MHCLG), and Cadw through DataMapWales (Welsh Government): World Heritage Sites within 10 km (6.2 miles), battlefields within 5 km (3.1 miles), registered parks and gardens within 3 km (1.9 miles), scheduled monuments within 2 km (1.2 miles), and Grade I and II* listed buildings within 1 km (0.6 miles). Ordnance Survey, OS Open Names, October 2026: named hills, valleys, lakes, woods, wetlands and coast (it has no rivers). Distances are in a straight line to the middle of each site, and being on a register does not mean there is public access.

Air quality

Source: Defra, modelled background air pollution, annual means for 2024, for the 1 km square that holds the middle of the street. These are background levels, away from the kerb: beside a busy road nitrogen dioxide in particular can be several times higher. UK limits are the legal annual limits for England and Wales; the World Health Organization's 2021 guidelines are much stricter, and most towns and cities are above them.

Annual means in µg/m³ (micrograms per cubic metre of air)
PollutantHereUK limitWHO guideline
Nitrogen dioxide (NO2)5.94010
Fine particles (PM2.5)6.8205
Particles (PM10)12.14015

All three are within the UK legal limits; PM2.5 is above the WHO guideline, as in most towns and cities.

Road and rail noise

Source: Defra, strategic noise mapping Round 4 (England), modelled for 2021 and published in December 2023, and its airport maps of the same round for the fifteen largest English airports, published in April 2026: Lden, the average sound level over a whole day with extra weight for the evening and night, on a 10 m grid, read at each address. These are models of traffic, not measurements; they leave out smaller airports and airfields, industry and neighbours, and a room at the back of a house is often much quieter than the front. The World Health Organization's guidelines are 53 dB for road traffic, 54 dB for railways and 45 dB for aircraft (below the lowest level shown here).

Addresses by modelled noise level (Lden, dB)
LevelRoad trafficRailways
65 to 6910
Under 55206207

1 of the street's 207 addresses is modelled at 55 dB or more from road traffic, above the WHO guidelines.

Climate, daylight and earthquakes

Monthly temperatures and rainfall, sunrise and sunset through the year, and earthquakes recorded nearby since 1970 are much the same across the area, so they are worked out once for Mid Suffolk: see them on the Mid Suffolk page.

Nearest schools

Source: Get Information About Schools (Department for Education), 1 November 2026; Ofsted monthly management information as at September 2026. Distances are straight lines from the middle of the street to the school; catchments and admissions are not shown. Since November 2025 Ofsted gives report-card grades by area, not one overall grade; older grades stand until a school is re-inspected.

SchoolPhaseAgesDistanceInspection
Hartismere SchoolSecondary11–18400 m (0.2 miles) No overall grade (Feb 2025, graded inspection without an overall judgement): Quality of education: Good; Behaviour and attitudes: Good; Personal development: Outstanding; Leadership and management: Good
St Peter and St Paul Church of England Primary School, EyePrimary3–111.5 km (0.9 miles) Good (Sep 2022, overall grade under the previous framework)

Food hygiene ratings nearby

Source: Food Standards Agency, Food Hygiene Rating Scheme, extract of 1 November 2026. Each rating is shown with the date it was given; a business may have been re-inspected since the extract. Within 500 m (0.3 miles) of the middle of the street.

BusinessTypeDistanceRatingRated
Hartismere School IP23 7BLSchool/college/university390 m4 Good26 Nov 2025

Crime within 250 m

Source: data.police.uk street-level crime, September 2025 to August 2026. Police forces move every crime to the nearest of about 760,000 anonymised map points before publishing, so these are crimes near this street, not on it, and a busy point can collect crimes from a wider area. Counts are of records, not convictions.

No crimes recorded at anonymised points within 250 m in this period (suffolk).

People and work

Source: ONS Census 2021, taken on 21 March 2021, for the 5 Output Areas (small census areas of about 125 households each) that this street's postcodes are in: 1,912 residents in 806 households. The census was taken during a lockdown, so working from home is high and travel to work low compared with now. ONS swaps a few records between neighbouring areas and adds small amounts of noise to counts to protect privacy, so small differences mean little. Industry is not published for areas this small.

Who lives here

Around this streetEngland
Median age5440
Children under 1513%17%
Aged 65 and over34%18%

Homes

Around this streetEngland
Owned (outright or with a mortgage)74%61%
Owned outright47%33%
Shared ownershipunder 1%1%
Social rented15%17%
Private rented11%21%

Work and commuting

Around this streetEngland
Adults (16 and over) in work50%57%
Unemployment (of those working or looking for work)4%6%
Retired (of adults)37%22%
Long-term sick or disabled (of adults)3%4%
Work mainly from home (of those in work)30%32%
Travel to work by car or van62%48%
By train, Underground, metro or tramunder 1%4%
By any public transport, including bus1%8%
On foot or by bicycle6%10%
Work within 10 km (6 miles) of home (of those who travel to work)48%65%
Work 30 km (19 miles) or more away14%8%

Education and languages

Around this streetEngland
Degree or other higher qualification, Level 4+ (of adults)26%34%
No qualifications21%18%
Apprenticeship as highest qualification6%5%
Main language English (aged 3 and over)99%91%
Cannot speak English well or at allunder 1%2%

Deprivation

The 3 neighbourhoods around this street are in deciles 5 to 7 of 10 on the English Indices of Deprivation 2025, where 1 is the most deprived tenth of England's 33,755 neighbourhoods and 10 the least.

Source: English Indices of Deprivation 2025 (Ministry of Housing, Communities and Local Government), by LSOA (about 1,500 people), through the ONS Postcode Directory. The index combines income, employment, health, education, crime, housing and living environment; it ranks areas against each other and does not describe any one household. Ranks in England and Wales are worked out separately and cannot be compared.

What has changed

  • Energy certificates New energy certificate: band B, bungalow, detached (lodged 15 October 2026) found 2 November 2026
  • Energy certificates New energy certificate: band B, house, detached (lodged 23 October 2026) found 2 November 2026

Everything that has changed on and near this street

Postcodes on this street

Source: ONS Postcode Directory August 2026, ONS UPRN Directory September 2026, OS Open Linked Identifiers September 2026. A postcode can cover more than one street; the share shows how many of its addresses are on this one.

  • IP23 7FE: 51 addresses of 93 in the postcode
  • IP23 7BL: 37 addresses
  • IP23 7BJ: 17 addresses of 20 in the postcode
  • IP23 7GF: 12 addresses of 39 in the postcode
  • IP23 7GA: 11 addresses of 18 in the postcode
  • IP23 7FZ: 10 addresses of 17 in the postcode
  • IP23 7GE: 9 addresses of 17 in the postcode
  • IP23 7FD: 8 addresses of 17 in the postcode
  • IP23 7FJ: 7 addresses of 14 in the postcode
  • IP23 7FL: 7 addresses of 20 in the postcode
  • IP23 7FF: 5 addresses of 7 in the postcode
  • IP23 7FH: 5 addresses of 8 in the postcode
  • IP23 7DD: 4 addresses of 10 in the postcode
  • IP23 7BH: 3 addresses
  • IP23 7FG: 3 addresses of 11 in the postcode
  • IP23 7FP: 3 addresses of 8 in the postcode
  • IP23 7FU: 3 addresses
  • IP23 7DE: 2 addresses of 50 in the postcode
  • IP23 7FQ: 2 addresses of 7 in the postcode
  • IP23 7AQ: 1 address of 20 in the postcode
  • IP23 7FN: 1 address of 6 in the postcode
  • IP23 8BW: 1 address of 33 in the postcode

Nearby streets

Jervis Close · Clyde Way · Navy Row

All the streets in IP23 and across Mid Suffolk.

What this page cannot tell you

  • Whether a particular house is at risk of flooding, subsiding or anything else: the flood map is a model of areas and there is no property-level data here.
  • What a home is worth now: sales are historic prices for the homes that happened to sell.
  • How safe the street is: crime points are moved to anonymised locations and many crimes are never reported.
  • Whether you would get a place at a school: distances are straight lines, not catchments.
  • Who lives on the street now: census figures describe the small areas around it in March 2021, during a lockdown.
  • How long a journey takes or how often anything runs: transport distances are straight lines to the nearest stops.
  • Whether a GP practice is taking new patients, or a dentist new NHS patients.
  • How loud a home is inside, or noise from industry, neighbours or smaller airfields: noise figures are models of road, rail and air traffic outside.

How each figure on this page is matched to the street and worked out: methodology.