Boulder Clay Way Barnstaple, North Devon
26 addresses across 1 postcode (EX31), about 120 m long, classed as a local road. USRN 27507531.
- Sales: 36 recorded sales since 1995; in 2025 the median was £295,000 across 1 sale.
- Prices and rents: A typical home in North Devon cost £280,441 in August 2026 (-4.2% on a year); private rents averaged £848 a month.
- Energy: 25 homes have an energy certificate (B: 25).
- Flood: No address on its postcodes is in an area at high or medium risk of flooding from rivers, the sea or surface water.
- Recorded floods: No recorded flood covers the centre of any of its postcodes.
- Landfill: 3 historic landfill sites within 500 m (0.3 miles) of its postcodes; the nearest, Brannams Claypits, is 120 m away.
- Storm overflows: 3 storm overflows within 1 km (0.6 miles) spilled 32 times (252 hours) in 2025.
- 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.
- Council tax: Most homes around it are in council tax band B; Band D in North Devon costs £2,642 a year in 2026-27.
- Broadband: Gigabit broadband is available to 100% of premises.
- Transport: The nearest railway station is Barnstaple, about 2.6 km (1.6 miles) away in a straight line.
- Green space: The nearest park or garden is about 310 m away.
- Air: Background air pollution in 2024 was 4.2 µg/m³ of nitrogen dioxide and 5.0 of PM2.5, within UK legal limits.
- Height: Its addresses are 22 to 24 m above sea level.
- Noise: 1 of its 26 addresses is modelled at 55 dB or more from road traffic.
- Doctors: The nearest GP surgery is Fremington Medical Centre, about 1.7 km (1 mile) away.
- People: About 320 people lived in the census areas around it in 2021; 52% of households owned their home and 28% of adults held a degree or other higher qualification.
- Crime: 50 crimes were recorded within 250 m between September 2025 and August 2026, most often violence and sexual offences.
- Road safety: No collisions in which someone was hurt were reported on and around it in 2021 to 2025.
£9.99 The Street Dossier Full Report for a home on Boulder Clay Way: 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 |
|---|---|---|---|---|
| 2025 | 1 | £295,000 | £295,000 | £295,000 |
| 2024 | 1 | £170,000 | £170,000 | £170,000 |
| 2022 | 2 | £115,000 | £77,500 | £152,500 |
| 2021 | 3 | £157,000 | £82,500 | £200,000 |
| 2020 | 1 | £265,000 | £265,000 | £265,000 |
| 2019 | 1 | £82,500 | £82,500 | £82,500 |
| 2018 | 18 | £182,700 | £148,000 | £320,000 |
| 2017 | 1 | £262,950 | £262,950 | £262,950 |
| Date | Address | Type | Price | Notes |
|---|---|---|---|---|
| 9 Nov 2017 | 1 EX31 3WH | Terraced | £262,950 | New build. |
| 13 Jul 2021 | 2 EX31 3WH | Flat or maisonette | £157,000 | Leasehold. |
| 10 Jul 2018 | 2 EX31 3WH | Flat or maisonette | £159,950 | New build. Leasehold. |
| 14 Sep 2018 | 3 EX31 3WH | Flat or maisonette | £148,000 | New build. Leasehold. |
| 9 Jan 2024 | 4 EX31 3WH | Flat or maisonette | £170,000 | Leasehold. |
| 21 Dec 2023 | 4 EX31 3WH | Flat or maisonette | £170,000 | Leasehold. Not a standard sale (repossession, buy-to-let or transfer). |
| 31 Aug 2018 | 4 EX31 3WH | Flat or maisonette | £149,500 | New build. Leasehold. |
| 27 Jun 2018 | 5 EX31 3WH | Flat or maisonette | £162,000 | New build. Leasehold. Not a standard sale (repossession, buy-to-let or transfer). |
| 29 Jun 2018 | 6 EX31 3WH | Flat or maisonette | £159,950 | New build. Leasehold. |
| 29 Jun 2018 | 7 EX31 3WH | Flat or maisonette | £162,000 | New build. Leasehold. Not a standard sale (repossession, buy-to-let or transfer). |
| 29 Jun 2018 | 8 EX31 3WH | Flat or maisonette | £162,000 | New build. Leasehold. Not a standard sale (repossession, buy-to-let or transfer). |
| 8 Oct 2021 | 9 EX31 3WH | Flat or maisonette | £82,500 | Leasehold. |
| 24 Jan 2019 | 9 EX31 3WH | Flat or maisonette | £82,500 | Leasehold. |
| 29 Jun 2018 | 9 EX31 3WH | Flat or maisonette | £162,000 | New build. Leasehold. Not a standard sale (repossession, buy-to-let or transfer). |
| 29 Jun 2018 | 10 EX31 3WH | Flat or maisonette | £162,000 | Leasehold. Not a standard sale (repossession, buy-to-let or transfer). |
| 7 Jan 2022 | 11 EX31 3WH | Flat or maisonette | £77,500 | Leasehold. |
| 29 Jun 2018 | 11 EX31 3WH | Flat or maisonette | £162,000 | New build. Leasehold. Not a standard sale (repossession, buy-to-let or transfer). |
| 29 Jun 2018 | 12 EX31 3WH | Flat or maisonette | £163,500 | New build. Leasehold. |
| 18 Mar 2022 | 13 EX31 3WH | Flat or maisonette | £152,500 | Leasehold. |
| 13 Aug 2021 | 13 EX31 3WH | Flat or maisonette | £150,000 | Leasehold. Not a standard sale (repossession, buy-to-let or transfer). |
| 6 Jul 2018 | 13 EX31 3WH | Flat or maisonette | £155,450 | New build. Leasehold. |
| 7 Jul 2025 | 14 EX31 3WH | Detached | £295,000 | |
| 29 Jun 2018 | 14 EX31 3WH | Detached | £279,950 | New build. |
| 14 Jun 2018 | 15 EX31 3WH | Semi-detached | £270,000 | New build. |
| 29 Nov 2018 | 16 EX31 3WH | Detached | £320,000 | New build. |
| 21 Dec 2018 | 17 EX31 3WH | Detached | £315,000 | New build. |
| 10 Oct 2018 | 18 EX31 3WH | Detached | £320,000 | New build. |
| 16 Nov 2018 | 19 EX31 3WH | Detached | £290,000 | New build. |
| 22 Jun 2018 | 20 EX31 3WH | Terraced | £182,450 | New build. |
| 21 Dec 2021 | 21 EX31 3WH | Terraced | £200,000 | |
| 20 Jun 2018 | 21 EX31 3WH | Terraced | £179,950 | New build. |
| 22 Jun 2018 | 22 EX31 3WH | Terraced | £218,202 | New build. |
| 22 Jun 2018 | 23 EX31 3WH | Terraced | £174,552 | New build. |
| 5 Jun 2018 | 24 EX31 3WH | Terraced | £182,950 | New build. |
| 4 Nov 2020 | 25 EX31 3WH | Detached | £265,000 | |
| 25 Jan 2018 | 25 EX31 3WH | Detached | £250,000 | New build. |
House prices and rents in North Devon
A typical home in North Devon cost £280,441 in August 2026, 4.2% less than a year before. That is 9% more than five years earlier and 32% more than ten years earlier.
| Home | Typical price, Aug 2026 |
|---|---|
| Detached | £422,772 |
| Semi-detached | £283,384 |
| Terraced | £226,097 |
| Flat or maisonette | £136,873 |
| Bought by a first-time buyer | £227,377 |
Private renters in North Devon paid £848 a month on average in September 2026, 0.3% less than a year before. That is 26% more than five years earlier.
| Home | Average rent a month, Sep 2026 |
|---|---|
| One bedroom | £590 |
| Two bedrooms | £780 |
| Three bedrooms | £967 |
| Four or more bedrooms | £1,334 |
Energy performance certificates
25 homes with a current certificate; median floor area 59 m². Most common: Flat (12); House, detached (8); House, mid-terrace (3). Built: 2018 (21); 2017 (4).
Each home's certificates and sales (25 addresses)
- 1, Boulder Clay Way, Roundswell
- 2, Boulder Clay Way, Roundswell
- 3, Boulder Clay Way, Roundswell
- 4, Boulder Clay Way, Roundswell
- 5, Boulder Clay Way, Roundswell
- 6, Boulder Clay Way, Roundswell
- 7, Boulder Clay Way, Roundswell
- 8, Boulder Clay Way, Roundswell
- 9, Boulder Clay Way, Roundswell
- 10, Boulder Clay Way, Roundswell
- 11, Boulder Clay Way, Roundswell
- 12, Boulder Clay Way, Roundswell
- 13, Boulder Clay Way, Roundswell
- 14, Boulder Clay Way, Roundswell
- 15, Boulder Clay Way, Roundswell
- 16, Boulder Clay Way, Roundswell
- 17, Boulder Clay Way, Roundswell
- 18, Boulder Clay Way, Roundswell
- 19, Boulder Clay Way, Roundswell
- 20, Boulder Clay Way, Roundswell
- 21, Boulder Clay Way, Roundswell
- 22, Boulder Clay Way, Roundswell
- 23, Boulder Clay Way, Roundswell
- 24, Boulder Clay Way, Roundswell
- 25, Boulder Clay Way, Roundswell
Gas and electricity use
Homes with gas used 4,585 kWh of it on average in 2024, 49% less than the district's 8,943 kWh, and 2,054 kWh of electricity, 41% less than the district's 3,460 kWh. There are gas meters for about 93% of the homes.
These are all the homes on the 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 EX31.
Council tax
What each band costs in North Devon in 2026-27: Band D £2,642 a year on average, including the police, fire and any county and parish charges.
| A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|
| £1,761 | £2,055 | £2,349 | £2,642 | £3,229 | £3,817 | £4,404 | £5,284 |
Homes by band in the neighbourhood around this street: most are in band B (37% of about 620 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 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.
Energy projects nearby
2 energy projects near the street's postcodes.
| Project | Kind | Size | Stage | Distance |
|---|---|---|---|---|
| Philip Dennis Food Service North Devon 63981 | Battery storage | 3.8 MW | Operational May 2018 | 800 m (0.5 miles) |
| Horsacott Farm Solar Park North Devon 54349 | Solar farm | 6.4 MW | Operational Mar 2013 | 840 m (0.5 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
No street works under way, planned or finished in the last three months on this street, in permits up to 31 October 2026.
Flood risk
No address in this street's postcodes 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.
Recorded floods
No recorded flood covers the centre 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
3 storm overflows within 1 km (0.6 miles) of the street's postcodes spilled 32 times, for 252 hours in all, in 2025. They discharge into Bryn Brook(S).
| Overflow | Into | Spills | Hours | Distance |
|---|---|---|---|---|
| Shieling Road Cso South West Water | Bryn Brook(S) | 1 | 0 | 480 m (0.3 miles) |
| Combrew Lane Cso South West Water | Bryn Brook(S) | 10 | 23 | 600 m (0.4 miles) |
| Muddlebridge Cso South West Water | Bryn Brook(S) | 21 | 229 | 1 km (0.6 miles) |
A storm overflow lets sewage diluted with rainwater into a river, stream or the sea when heavy rain overwhelms the sewers, so the spills here affect the water they run into, not homes. A spill is counted the regulators' way: a first 12 hours, then each 24 hours it goes on.
Coal mining
No postcode centre here is in a coalfield: the Mining Remediation Authority records no coal mining risk here.
Radon
The postcode is in a 1 km square with radon potential up to 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 the square 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
3 historic landfill sites are within 500 m (0.3 miles) of the street's postcodes, the nearest 120 m away.
| Site | Waste went in | Waste | Distance |
|---|---|---|---|
| Brannams Claypits Fremington, Exeter, Devon | Not recorded | Not recorded | 120 m |
| Claypits Coverts Tews Lane, Bickington, Barnstaple, Devon | 1988 to 1993 | Inert, industrial, commercial, household | 250 m |
| Bickington Barnstaple, Barnstaple, Devon | 1965 to 1983 | Inert, industrial, commercial, household | 260 m |
Closed tips can give off gas (methane and carbon dioxide) and leak into the ground for years. An environmental search, which conveyancers usually order, looks at landfill and contaminated land around the home; the council keeps a register of land it has found to be contaminated.
Height above sea level
The street's 26 addresses are between 22 m and 24 m above sea level (23 m on average).
Broadband
| Postcode | Superfast (30 Mbit/s+) | Ultrafast (300 Mbit/s+) | Gigabit | Below 10 Mbit/s |
|---|---|---|---|---|
| EX31 3WH | 100% | 100% | 100% | 0% |
Getting around
| Nearest | Distance | |
|---|---|---|
| Railway stations | Barnstaple 609,000 journeys in 2024–25 | 2.6 km (1.6 miles) |
| Chapelton (Devon) 160 journeys in 2024–25 | 7.7 km (4.8 miles) | |
| Umberleigh 54,000 journeys in 2024–25 | 11.3 km (7 miles) | |
| Bus stops | 3 stops within 400 m (0.2 miles), 18 within 800 m (0.5 miles); nearest Swallowfield Roundswell | 270 m |
| Bus or coach station | Bus Station Barnstaple | 3.2 km (2 miles) |
| Ferry terminal | Instow Ferry Landing | 6.2 km (3.8 miles) |
| Car parks | Cattle Market Car Park | 2.9 km (1.8 miles) |
| EV charging points | 1 within 1.6 km (1 mile); nearest MFG Charging Station | 1.2 km (0.7 miles) |
| Airport with scheduled flights | Exeter International Airport EXT | 60.8 km (38 miles) |
| Nearest large airport | Cardiff International Airport CWL | 64.2 km (40 miles) |
Local services
| Nearest | Distance | |
|---|---|---|
| GP surgeries | Fremington Medical Centre Good Sep 2018 | 1.7 km (1 mile) |
| Pharmacies | 1 pharmacy within 1.6 km (1 mile); nearest Boots | 1.2 km (0.8 miles) |
| NHS dentists | Hillcrest Smiles Limited | 1.6 km (1 mile) |
| Hospital | North Devon District Hospital Requires improvement Mar 2024 | 4.3 km (2.7 miles) |
| Care homes | Oaklands Residential Care Home Good Mar 2023 | 1.8 km (1.1 miles) |
| Police station | Barnstaple Police Station | 2.8 km (1.7 miles) |
| Cash machines | MFG - Roundswell Services Cashzone | 1.2 km (0.7 miles) |
Parks and green space
| Nearest | Distance | |
|---|---|---|
| Park or garden | 1 within 800 m (0.5 miles); nearest Unnamed 5,140 m² | 310 m |
| Play area | 7 within 800 m (0.5 miles); nearest Unnamed 320 m² | 170 m |
| Playing field | 3 within 800 m (0.5 miles); nearest Unnamed 2.9 ha | 180 m |
| Allotments | Babbages Allotments 4,180 m² | 820 m (0.5 miles) |
Within 800 m (0.5 miles): 1 park or garden, 0.5 hectares in all.
Landmarks
6 listed buildings are within 1 km (0.6 miles).
| Name | What it is | From the middle of the street |
|---|---|---|
| Claypit Covert | Wood | 250 m west |
| Fremington Pill | Tidal water | 1.8 km (1.1 miles) north-west |
| Bassett's Ridge | Wetland | 2.8 km (1.7 miles) north-west |
| Saltpill Duck Pond | Lake or reservoir | 2.8 km (1.8 miles) north-west |
| Tent Hill | Hill | 3.5 km (2.2 miles) south-east |
| Golden Valley | Valley | 4 km (2.5 miles) south-east |
Air quality
| Pollutant | Here | UK limit | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 4.2 | 40 | 10 |
| Fine particles (PM2.5) | 5.0 | 20 | 5 |
| Particles (PM10) | 10.0 | 40 | 15 |
All three are within both the UK limits and the WHO guidelines.
Road and rail noise
| Level | Road traffic | Railways |
|---|---|---|
| 55 to 59 | 1 | 0 |
| Under 55 | 25 | 26 |
1 of the street's 26 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 North Devon: see them on the North Devon page.
Nearest schools
| School | Phase | Ages | Distance | Inspection | Exam results |
|---|---|---|---|---|---|
| Roundswell Community Primary Academy | Primary | 3–11 | 170 m | Good (Jun 2023, overall grade under the previous framework) | None published |
| Sticklepath Community Primary Academy | Primary | 2–11 | 1.3 km (0.8 miles) | Good (Nov 2022, overall grade under the previous framework) | 60% at the expected standard in reading, writing and maths, 3% at the higher standard (2025; 52% in 2024 and 63% in 2023) |
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.
Nurseries and childcare
3 nurseries, pre-schools and clubs within 1.5 km (0.9 miles), the nearest 50 m from the middle of the street.
| Provider | Kind | Places | Latest inspection | Distance |
|---|---|---|---|---|
| Little Butterflies Roundswell ASC EX31 3WJ | Out-of-school day care | 32 | Not inspected yet | 50 m |
| EarlyBirds Day Nursery Woodville EX31 2HJ | Full day care | 38 | Good (Nov 2024, overall grade under the previous framework) | 1.3 km (0.8 miles) |
| Primary Sports and Education ( North Devon) Ltd Activity Days EX31 2HH | Out-of-school day care (over fives) | Not inspected yet | 1.3 km (0.8 miles) |
Ofsted also registers 328 childminders and 60 home childcarers (nannies) in Devon. It does not publish their addresses, so they cannot be shown here; the council's family information service lists those taking children.
Food hygiene ratings nearby
| Business | Type | Distance | Rating | Rated |
|---|---|---|---|---|
| Roundswell Community Primary Academy. EX31 3WJ | School/college/university | 60 m | 4 Good | 16 Jan 2026 |
| The Old Barn Inn EX31 2JU | Pub/bar/nightclub | 460 m (0.3 miles) | 3 Generally satisfactory | 29 May 2026 |
Crime within 250 m
| Category | Crimes |
|---|---|
| Violence and sexual offences | 32 |
| Criminal damage and arson | 7 |
| Public order | 5 |
| Other theft | 3 |
| Anti-social behaviour | 2 |
| Vehicle crime | 1 |
Most of these are attached to: On or near Coverts Close (11); On or near Till Close (10); On or near Slip Court (9); On or near Barum Ware Way (6); On or near Boulder Clay Way (6).
Road safety
No collisions in which someone was hurt were reported on and around the street in 2021 to 2025.
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 | England | |
|---|---|---|
| Median age | 26 | 40 |
| Children under 15 | 33% | 17% |
| Aged 65 and over | 3% | 18% |
Homes
| Around this street | England | |
|---|---|---|
| Owned (outright or with a mortgage) | 52% | 61% |
| Owned outright | 5% | 33% |
| Shared ownership | 14% | 1% |
| Social rented | 28% | 17% |
| Private rented | 6% | 21% |
Work and commuting
| Around this street | England | |
|---|---|---|
| Adults (16 and over) in work | 72% | 57% |
| Unemployment (of those working or looking for work) | 5% | 6% |
| Retired (of adults) | 4% | 22% |
| Long-term sick or disabled (of adults) | 6% | 4% |
| Work mainly from home (of those in work) | 18% | 32% |
| Travel to work by car or van | 73% | 48% |
| By train, Underground, metro or tram | 0% | 4% |
| By any public transport, including bus | 2% | 8% |
| On foot or by bicycle | 8% | 10% |
| Work within 10 km (6 miles) of home (of those who travel to work) | 76% | 65% |
| Work 30 km (19 miles) or more away | 6% | 8% |
Education and languages
| Around this street | England | |
|---|---|---|
| Degree or other higher qualification, Level 4+ (of adults) | 28% | 34% |
| No qualifications | 6% | 18% |
| Apprenticeship as highest qualification | 5% | 5% |
| Main language English (aged 3 and over) | 96% | 91% |
| Cannot speak English well or at all | under 1% | 2% |
Deprivation
The neighbourhood around this street is in decile 6 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.
What has changed
Nothing new since the change feed started on 30 October 2026. New sales and energy certificates, and hygiene ratings, school inspections and flood figures nearby, will be listed here as the sources update.
Postcodes on this street
- EX31 3WH: 26 addresses
Nearby streets
Higher Gorse Road · Coverts Close · Higher Gorse Road · Pancheon Close · Wheel Close · Varve Close · Potters Wood · Wolstonian Way · Till Close · Claypits Road · Muddle Brook · Slip Court
All the streets in EX31 and across North Devon.
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.