Cefn Parc Tredegar, Blaenau Gwent
21 addresses across 2 postcodes (NP22), about 140 m long, classed as a local road. USRN 3100195.
- Sales: 20 recorded sales since 1995; in 2024 the median was £190,000 across 1 sale.
- Prices and rents: A typical home in Blaenau Gwent cost £143,243 in August 2026 (+2.1% on a year); private rents averaged £682 a month.
- Energy: 15 homes have an energy certificate (C: 3, D: 10, E: 1, F: 1).
- Flood: No postcode centre on the street is in flood zone 2 or 3.
- Recorded floods: No recorded flood covers the centre of any of its postcodes.
- Coal mining: 1 of its postcodes is in a coal mining high risk area; ask for a coal mining search.
- Radon: Up to 3 to 5% of homes in the 1 km squares around it are estimated to be at or above the radon Action Level.
- Energy projects: 6 renewable energy projects nearby are planned or being built; the nearest, Wauntysswg Farm, near Tredagar, is 1.7 km (1.1 miles) away.
- Council tax: Most homes around it are in council tax band A; Band D in Blaenau Gwent costs £2,531 a year in 2026-27.
- Broadband: Gigabit broadband is available to 100% of premises.
- Transport: The nearest railway station is Rhymney, about 3 km (1.9 miles) away in a straight line.
- Green space: The nearest park or garden, Bedwellty Park, is about 340 m away.
- Air: Background air pollution in 2024 was 5.3 µg/m³ of nitrogen dioxide and 5.1 of PM2.5, within UK legal limits.
- Height: Its addresses are 336 to 347 m above sea level.
- Noise: 1 of its 21 addresses is modelled at 55 dB or more from road traffic.
- Doctors: The nearest GP surgery is Health Centre, about 430 m (0.3 miles) away, with 2 practices within 1.6 km (1 mile).
- People: About 260 people lived in the census areas around it in 2021; 84% of households owned their home and 31% of adults held a degree or other higher qualification.
- Crime: 63 crimes were recorded within 250 m between September 2025 and August 2026, most often violence and sexual offences.
- Road safety: 2 collisions in which someone was hurt were reported on and around it in 2021 to 2025, 1 of them fatal or serious.
£9.99 The Street Dossier Full Report for a home on Cefn Parc: its own records, questions to ask the seller and everything on this page, in one PDF. Choose the home
House sales on this street
| Year | Sales | Median price | Lowest | Highest |
|---|---|---|---|---|
| 2024 | 1 | £190,000 | £190,000 | £190,000 |
| 2021 | 3 | £150,000 | £150,000 | £270,000 |
| 2018 | 2 | £155,000 | £155,000 | £155,000 |
| 2017 | 1 | £125,000 | £125,000 | £125,000 |
| 2016 | 1 | £154,500 | £154,500 | £154,500 |
| 2014 | 1 | £135,000 | £135,000 | £135,000 |
| 2013 | 1 | £124,950 | £124,950 | £124,950 |
| 2012 | 2 | £107,750 | £71,500 | £144,000 |
| 2011 | 1 | £143,500 | £143,500 | £143,500 |
| 2010 | 1 | £125,000 | £125,000 | £125,000 |
| 2006 | 1 | £172,500 | £172,500 | £172,500 |
| 2003 | 2 | £80,750 | £76,500 | £85,000 |
| Date | Address | Type | Price | Notes |
|---|---|---|---|---|
| 26 Oct 2012 | 1 NP22 3PH | Semi-detached | £71,500 | |
| 19 Mar 2021 | 2 NP22 3PH | Semi-detached | £150,000 | |
| 27 Aug 2021 | 7 NP22 3PH | Semi-detached | £150,000 | |
| 18 Mar 1997 | 7 NP22 3PH | Semi-detached | £41,000 | |
| 15 Jan 1997 | 8 NP22 3PH | Detached | £30,000 | |
| 3 Dec 2018 | 9 NP22 3PH | Detached | £155,000 | |
| 21 Feb 2012 | 9 NP22 3PH | Detached | £144,000 | |
| 24 Sep 2003 | 9 NP22 3PH | Detached | £85,000 | |
| 30 May 2014 | 10 NP22 3PH | Detached | £135,000 | |
| 12 Jul 2006 | 10 NP22 3PH | Semi-detached | £172,500 | |
| 4 Apr 2024 | 11 NP22 3PH | Detached | £190,000 | |
| 6 Sep 2013 | 12 NP22 3PH | Detached | £124,950 | |
| 29 Jun 2021 | 13 NP22 3PH | Detached | £270,000 | |
| 19 Mar 2018 | 13 NP22 3PH | Detached | £155,000 | |
| 17 Jun 2016 | 13 NP22 3PH | Detached | £154,500 | |
| 18 Jun 2010 | 13 NP22 3PH | Detached | £125,000 | |
| 15 Aug 2011 | 17 NP22 3PH | Detached | £143,500 | |
| 11 Sep 2003 | 18 NP22 3PH | Semi-detached | £76,500 | |
| 4 Mar 1998 | 19 NP22 3PH | Detached | £57,000 | |
| 25 Jul 2017 | 21 NP22 3PH | Detached | £125,000 |
House prices and rents in Blaenau Gwent
A typical home in Blaenau Gwent cost £143,243 in August 2026, 2.1% more than a year before. That is 28% more than five years earlier and 84% more than ten years earlier.
| Home | Typical price, Aug 2026 |
|---|---|
| Detached | £233,483 |
| Semi-detached | £156,998 |
| Terraced | £131,350 |
| Flat or maisonette | £81,379 |
| Bought by a first-time buyer | £136,700 |
Private renters in Blaenau Gwent paid £682 a month on average in September 2026, 5.9% more than a year before. That is 52% more than five years earlier.
| Home | Average rent a month, Sep 2026 |
|---|---|
| One bedroom | £504 |
| Two bedrooms | £605 |
| Three bedrooms | £689 |
| Four or more bedrooms | £902 |
Energy performance certificates
15 homes with a current certificate; median floor area 96 m². Most common: House, detached (11); Bungalow, semi-detached (4). Built: 1967-1975 (10); 1950-1966 (3); 1976-1982 (2). Tenure at assessment: owner-occupied (11).
Each home's certificates and sales (15 addresses)
Gas and electricity use
Homes with gas used 15,387 kWh of it on average in 2024, 31% more than the district's 11,766 kWh, and 2,844 kWh of electricity, about the same as the district. There are gas meters for about 100% of the homes.
| Postcode | Electricity meters | Typical electricity | Gas meters | Typical gas |
|---|---|---|---|---|
| NP22 3PH | 19 | 2,426 kWh | 20 | 15,901 kWh |
| NP22 3NP | 22 | 2,123 kWh | 22 | 13,533 kWh |
These are all the homes on each postcode, whatever their size and however many live in them, so they show the kind of homes and heating here rather than what any one home uses. The typical figure is the median: half the homes used less. The district is NP22.
Council tax
What each band costs in Blaenau Gwent in 2026-27: Band D £2,531 a year on average, including the police and community council charges.
| A | B | C | D | E | F | G | H | I |
|---|---|---|---|---|---|---|---|---|
| £1,688 | £1,969 | £2,250 | £2,531 | £3,094 | £3,656 | £4,219 | £5,063 | £5,906 |
Homes by band in the neighbourhood around this street: most are in band A (43% of about 690 homes).
Planning and heritage
- Conservation area: no postcode centre in this street's postcodes is in one.
- Listed buildings on or by this street: none.
- Article 4 directions, tree preservation orders and green belt: Wales has no national record of these; the council's planning department holds them.
Energy projects nearby
9 energy projects near the street's postcodes, 6 of them not yet operating.
| Project | Kind | Size | Stage | Distance |
|---|---|---|---|---|
| Wauntysswg Farm, near Tredagar Welsh Government (NSIP) DNS/3213639 | Solar farm | 30 MW | Permission granted, not yet built Aug 2019 | 1.7 km (1.1 miles) |
| Pen Bryn Oer Wind Farm Caerphilly 13/0483/FULL | Wind 3 turbines | 4 MW | Operational Jan 2018 | 2.1 km (1.3 miles) |
| Manmoel Wind Farm Welsh Government (NSIP) DNS/3239181 | Wind 5 turbines, 180 m tall | 28 MW | Permission granted, not yet built Oct 2024 | 3 km (1.9 miles) |
| Trecatti | Landfill Gas | 7 MW | Operational Jul 2002 | 3.4 km (2.1 miles) |
| Rassau Industrial Estate Blaenau Gwent C/2018/0293 | Wind 1 turbine | 1.5 MW | Permission granted, not yet built Jul 2019 | 4.1 km (2.5 miles) |
| Rassau Industrial Estate, Unit 19 - Wind Turbine Blaenau Gwent C/2020/0301 | Wind 1 turbine | Planning application made Dec 2020 | 4.1 km (2.5 miles) | |
| Rassau Industrial Estate , Rassau - Biomass Boiler Blaenau Gwent C/2023/0021 | Biomass | Permission granted, not yet built Mar 2023 | 4.1 km (2.6 miles) | |
| Silent Valley Landfill Scheme | Landfill Gas | 2.7 MW | Operational Mar 2006 | 4.6 km (2.9 miles) |
| Pen-Yr-Heol Farm, Hollybush Caerphilly 21/0083/FULL | Wind 1 turbine, 77 m tall | Permission granted, not yet built May 2021 | 4.7 km (2.9 miles) |
Planned projects can change or not go ahead; search the planning authority's applications by the reference shown for the plans, conditions and any objections. Construction brings traffic for some months; once built, solar farms and batteries are usually quiet, while turbines and waste plants can be seen or heard further away.
Roadworks
Street works permits come from the Department for Transport's Street Manager, which covers England only.
Flood risk
Rivers, the sea or surface water: of the 44 address points in this street's postcodes, 3 at high risk, 5 at medium risk and 11 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: 3 at high risk, 5 at medium risk and 11 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 on this street is in flood zone 2 or 3. Welsh zones include an allowance for climate change.
| Postcode | Planning zone | Addresses at high / medium / low risk |
|---|---|---|
| NP22 3PH | not in 2 or 3 | 0 / 0 / 0 |
| NP22 3NP | not in 2 or 3 | 3 / 5 / 11 |
Recorded floods
No recorded flood covers the centre of any of this street's postcodes.
Recorded floods are where floodwater was seen or surveyed after a flood. Many floods were never mapped, an outline over a postcode's centre does not mean every home in it flooded, and homes outside one may have. Ask the seller whether the home itself has flooded.
Coastal erosion
No projected coastal erosion zone is within 1 km (0.6 miles) of the street's postcodes.
Storm overflows
No storm overflow outlet is within 1 km (0.6 miles) of the street's postcodes in this record, which covers the overflows reported to the Environment Agency: most of Wales's are reported to Natural Resources Wales instead.
Coal mining
1 of the street's 2 postcodes is in a coal mining high risk area, where coal mining features at or near the surface, such as shallow workings or old mine shafts, are recorded or likely and could affect the ground. 1 more is elsewhere in the coalfield, at low risk.
Ask your conveyancer for a coal mining search (CON29M) on the home: it says what is recorded beneath and near it, and whether there have been claims for subsidence damage.
Radon
The highest radon potential in the 1 km squares around the street's postcodes is 3 to 5%: up to that share of homes there is estimated to be at or above the Action Level of 200 becquerels per cubic metre. At least part of that area is a radon Affected Area, where 1% or more of homes are.
Radon is a natural radioactive gas from the ground that can build up indoors; long exposure raises the risk of lung cancer. A three-month test with two small detectors is the only way to know a home's level, and a high level can usually be brought down with a sump or better ventilation. Homes built here in recent decades should have radon protection under the building regulations (basic protection from 3%, full protection from 10%). UKHSA sells a radon report for a single address from its detailed map at ukradon.org.
Historic landfill
No historic landfill site is within 500 m (0.3 miles) of the street's postcodes.
Height above sea level
The street's 21 addresses are between 336 m and 347 m above sea level (341 m on average); the ground rises about 12 m from the lowest to the highest.
Broadband
| Postcode | Superfast (30 Mbit/s+) | Ultrafast (300 Mbit/s+) | Gigabit | Below 10 Mbit/s |
|---|---|---|---|---|
| NP22 3NP | 100% | 100% | 100% | 0% |
| NP22 3PH | 100% | 100% | 100% | 0% |
Getting around
| Nearest | Distance | |
|---|---|---|
| Railway stations | Rhymney 123,000 journeys in 2024–25 | 3 km (1.9 miles) |
| Pontlottyn 32,000 journeys in 2024–25 | 3.1 km (1.9 miles) | |
| Ebbw Vale Town 249,000 journeys in 2024–25 | 3.3 km (2 miles) | |
| Bus stops | 5 stops within 400 m (0.2 miles), 32 within 800 m (0.5 miles); nearest Park Hill Cefn Golau | 200 m |
| Bus or coach station | Tredegar Bus Station | 830 m (0.5 miles) |
| EV charging points | 7 within 1.6 km (1 mile); nearest Connected Kerb Charging Stations | 570 m (0.4 miles) |
| Airport with scheduled flights | Cardiff International Airport CWL | 41.6 km (26 miles) |
Local services
| Nearest | Distance | |
|---|---|---|
| GP surgeries | 2 practices within 1.6 km (1 mile); nearest Health Centre | 430 m (0.3 miles) |
| Pharmacies | 3 pharmacies within 1.6 km (1 mile); nearest Tredegar Health Centre Pharmacy | 430 m (0.3 miles) |
| NHS dentists | 3 practices within 1.6 km (1 mile); nearest Ty Dant Dental Practice | 430 m (0.3 miles) |
| Hospital | Ysbyty Aneurin Bevan | 3.1 km (2 miles) |
| Police station | Rhymney Police Station | 2.6 km (1.6 miles) |
| Cash machines | 2 machines within 800 m (0.5 miles); nearest ATM | 470 m (0.3 miles) |
Parks and green space
| Nearest | Distance | |
|---|---|---|
| Park or garden | 2 within 800 m (0.5 miles); nearest Bedwellty Park 9.1 ha | 340 m |
| Play area | 2 within 800 m (0.5 miles); nearest Unnamed 980 m² | 370 m |
| Playing field | 2 within 800 m (0.5 miles); nearest Tredegar Rugby Football Club 1.5 ha | 300 m |
| Allotments | 2 within 800 m (0.5 miles); nearest Unnamed 5,690 m² | 650 m (0.4 miles) |
Within 800 m (0.5 miles): 2 parks and gardens, 9.8 hectares in all.
Landmarks
The nearest historic landmark is Bedwellty Park, a registered park or garden (Grade II), 410 m (0.3 miles) north-east. 12 listed buildings are within 1 km (0.6 miles), 1 of them Grade II*.
| Name | What it is | From the middle of the street |
|---|---|---|
| Bedwellty Park | Registered park or garden, Grade II | 410 m (0.3 miles) north-east |
| Tredegar Ironworks Cholera Cemetery | Scheduled monument | 620 m (0.4 miles) south |
| The Town Clock | Listed building, Grade II* | 660 m (0.4 miles) north |
| Sirhowy Ironworks, Site of | Scheduled monument | 1.9 km (1.2 miles) north |
| Name | What it is | From the middle of the street |
|---|---|---|
| Sirhowy Valley | Valley | 920 m (0.6 miles) north-east |
| Carn Stwpa | Hill | 1.4 km (0.9 miles) south |
| Rhymni Hill | Hill | 1.7 km (1 mile) north-west |
| Coed y Rhyd | Wood | 1.7 km (1.1 miles) south-east |
| Cwm Tyswg | Valley | 1.8 km (1.1 miles) south |
| Rhaslas Pond | Lake or reservoir | 4.7 km (2.9 miles) west |
Air quality
| Pollutant | Here | UK limit | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 5.3 | 40 | 10 |
| Fine particles (PM2.5) | 5.1 | 20 | 5 |
| Particles (PM10) | 7.8 | 40 | 15 |
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
| Level | Road traffic | Railways |
|---|---|---|
| 55 to 59 | 1 | 0 |
| Under 55 | 20 | 21 |
1 of the street's 21 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 Blaenau Gwent: see them on the Blaenau Gwent page.
Nearest schools
| School | Phase | Ages | Distance | Inspection | Exam results |
|---|---|---|---|---|---|
| Tredegar Comprehensive School English medium | Secondary | 11–16 | 360 m | Estyn reports · My Local School | Not published in Wales |
| Georgetown Junior and Infants English medium | Primary | 3–11 | 790 m (0.5 miles) | Estyn reports · My Local School | Not published in Wales |
| Deighton Junior and Infants English medium | Primary | 3–11 | 1.6 km (1 mile) | Estyn reports · My Local School | Not published in Wales |
| Glanhowy Primary School English medium | Primary | 3–11 | 2 km (1.2 miles) | Estyn reports · My Local School | Not published in Wales |
Exam results are from the Department for Education's school performance tables (Explore Education Statistics, Open Government Licence), for all pupils at each school. The middle school in England had 63% at the expected standard at the end of primary school (2025), Attainment 8 of 46.0 at GCSE (2026) and an A level average of C+ (2025). Attainment 8 adds up a pupil's grades in eight GCSEs, with English and maths counted twice (90 is the most), averaged over the school's pupils. Progress 8 compares pupils with others who had the same results at the end of primary school; it is not published for GCSEs in 2025 and 2026, as those pupils sat no primary tests during the pandemic. Small year groups swing from year to year, and figures for very small ones are withheld. Wales publishes no school results tables.
Nurseries and childcare
Ofsted registers childcare in England only. In Wales, nurseries, playgroups and childminders are registered and inspected by Care Inspectorate Wales, whose directory of services lists them with their reports.
Food hygiene ratings nearby
| Business | Type | Distance | Rating | Rated |
|---|---|---|---|---|
| Trefil Rugby Club NP22 3NN | Pub/bar/nightclub | 300 m | 4 Good | 6 Dec 2024 |
| Tredegar Comprehensive School NP22 4BH | School/college/university | 300 m | 5 Very good | 17 Sep 2025 |
| Tredegar Community Club House NP22 3NN | Pub/bar/nightclub | 300 m | Awaiting inspection | |
| Tredegar Sports Centre NP22 4BH | Restaurant/Cafe/Canteen | 360 m | 5 Very good | 22 Jan 2025 |
| First Friends NP22 3TD | Hospitals/Childcare/Caring Premises | 430 m (0.3 miles) | 3 Generally satisfactory | 21 May 2026 |
| Cefn Golau Store NP22 3TD | Retailers - other | 430 m (0.3 miles) | 5 Very good | 12 Oct 2023 |
| O'Yes Pizza and Kebab Shop NP22 3TD | Takeaway/sandwich shop | 430 m (0.3 miles) | 4 Good | 19 Mar 2026 |
| Tredegar Ironsides RFC NP22 3NG | Pub/bar/nightclub | 430 m (0.3 miles) | 5 Very good | 28 Jan 2026 |
| Bedwellty House NP22 3XN | Restaurant/Cafe/Canteen | 450 m (0.3 miles) | 4 Good | 16 Sep 2025 |
| Cefn Golau Together NP22 3TD | Distributors/Transporters | 460 m (0.3 miles) | 5 Very good | 18 Oct 2024 |
Crime within 250 m
| Category | Crimes |
|---|---|
| Violence and sexual offences | 20 |
| Criminal damage and arson | 17 |
| Anti-social behaviour | 14 |
| Public order | 5 |
| Possession of weapons | 2 |
| Vehicle crime | 2 |
| Drugs | 1 |
| Bicycle theft | 1 |
| Other theft | 1 |
Most of these are attached to: On or near Park Hill (50); On or near Cefn Parc (5); On or near Morgan Terrace (4); On or near Pentrer Parc (3); On or near Inkerman Terrace (1).
Road safety
2 collisions in which someone was hurt were reported on and around the street in 2021 to 2025: 0 fatal, 1 serious and 1 slight, in which 1 person was seriously hurt. 1 involved a motorcyclist. 50% happened in the dark, and 50% on a wet or icy road. Most were on roads with a 30 mph limit.
| Year | Collisions | Fatal or serious |
|---|---|---|
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| Date | Severity | Who was hurt | Road | Conditions |
|---|---|---|---|---|
| 27 Nov 2025 03:19 | Slight | 1 person | B4526, 20 mph | Dark, street lights on, wet road |
| 8 Mar 2021 17:50 | Serious | 1 person: 1 motorcyclist | B4256, 30 mph | Daylight |
Only collisions in which someone was hurt and which the police were told about are here: damage-only collisions and near misses are not, and some injuries are never reported. Positions are recorded by the police, usually to within a few metres. Each year's figures are published the following September.
Traffic on nearby roads
No traffic count point is within 500 m (0.3 miles) of the street's postcodes. The Department for Transport counts every motorway and A road and only a sample of minor roads, so a quiet residential street usually has none.
People and work
Who lives here
| Around this street | Wales | |
|---|---|---|
| Median age | 46 | 43 |
| Children under 15 | 13% | 17% |
| Aged 65 and over | 23% | 21% |
Homes
| Around this street | Wales | |
|---|---|---|
| Owned (outright or with a mortgage) | 84% | 66% |
| Owned outright | 48% | 38% |
| Shared ownership | under 1% | under 1% |
| Social rented | 2% | 17% |
| Private rented | 13% | 17% |
Work and commuting
| Around this street | Wales | |
|---|---|---|
| Adults (16 and over) in work | 56% | 54% |
| Unemployment (of those working or looking for work) | 4% | 6% |
| Retired (of adults) | 30% | 25% |
| Long-term sick or disabled (of adults) | 6% | 6% |
| Work mainly from home (of those in work) | 29% | 26% |
| Travel to work by car or van | 65% | 61% |
| By train, Underground, metro or tram | 0% | under 1% |
| By any public transport, including bus | 2% | 3% |
| On foot or by bicycle | 3% | 8% |
| Work within 10 km (6 miles) of home (of those who travel to work) | 48% | 60% |
| Work 30 km (19 miles) or more away | 20% | 10% |
Education and languages
| Around this street | Wales | |
|---|---|---|
| Degree or other higher qualification, Level 4+ (of adults) | 31% | 32% |
| No qualifications | 22% | 20% |
| Apprenticeship as highest qualification | 4% | 6% |
| Main language English or Welsh (aged 3 and over) | 98% | 97% |
| Cannot speak English well or at all | under 1% | under 1% |
Deprivation
The neighbourhood around this street is in decile 5 of 10 on the Welsh Index of Multiple Deprivation 2025, where 1 is the most deprived tenth of Wales's 1,917 neighbourhoods and 10 the least.
What has changed
- Energy certificates New energy certificate: band C, house, detached (lodged 29 October 2026) found 2 November 2026
Postcodes on this street
Nearby streets
Parkville · Inkerman Terrace · Pentrer Parc · Morgan Terrace · Park Hill · Stable Lane · Attlee Way · Attlee Way · Aberffrwd · Golygfa'r Parc · Park View · Frondeg
All the streets in NP22 and across Blaenau Gwent.
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; road collisions count only those in which someone was hurt and the police were told.
- 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.