Greenlea Avenue Bognor Regis, Arun
10 addresses across 1 postcode (PO21), about 170 m long, classed as a local road. USRN 1103100.
- Sales: 31 recorded sales since 1995; in 2024 the median was £303,000 across 1 sale.
- Prices and rents: A typical home in Arun cost £320,505 in August 2026 (-1.2% on a year); private rents averaged £1,240 a month.
- Energy: 3 homes have an energy certificate (D: 2, F: 1).
- 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.
- Storm overflows: 1 storm overflow within 1 km (0.6 miles) spilled 3 times (15 hours) in 2025.
- Coastal erosion: The nearest projected coastal erosion zone is 760 m (0.5 miles) from its postcodes.
- Radon: Up to 1 to 3% of homes in the 1 km squares around it are estimated to be at or above the radon Action Level.
- Energy projects: 1 renewable energy project nearby is planned or being built; the nearest, Sefter Farm, Pagham Road - Solar Panels, is 1.3 km (0.8 miles) away.
- Council tax: Most homes around it are in council tax band C; Band D in Arun costs £2,487 a year in 2026-27.
- Broadband: Gigabit broadband is available to 100% of premises.
- Transport: The nearest railway station is Bognor Regis, about 3.6 km (2.3 miles) away in a straight line.
- Green space: The nearest park or garden, West Park Amenity Area, is about 2.2 km (1.4 miles) away.
- Air: Background air pollution in 2024 was 5.5 µg/m³ of nitrogen dioxide and 5.7 of PM2.5, within UK legal limits.
- Height: It is about 6 m above sea level.
- Noise: 1 of its 10 addresses is modelled at 55 dB or more from road traffic.
- Doctors: The nearest GP surgery is Grove House Surgery, about 610 m (0.4 miles) away.
- People: About 290 people lived in the census areas around it in 2021; 80% of households owned their home and 19% of adults held a degree or other higher qualification.
- Crime: 31 crimes were recorded within 250 m between September 2025 and August 2026, most often violence and sexual offences.
- Road safety: 4 collisions in which someone was hurt were reported on and around it in 2021 to 2025, 2 of them fatal or serious; 1 involved a pedestrian.
£9.99 The Street Dossier Full Report for a home on Greenlea Avenue: 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 | £303,000 | £303,000 | £303,000 |
| 2023 | 2 | £431,250 | £367,500 | £495,000 |
| 2022 | 1 | £350,000 | £350,000 | £350,000 |
| 2021 | 2 | £326,000 | £282,000 | £370,000 |
| 2018 | 1 | £389,950 | £389,950 | £389,950 |
| 2017 | 2 | £314,000 | £288,000 | £340,000 |
| 2016 | 1 | £240,000 | £240,000 | £240,000 |
| 2014 | 2 | £209,000 | £200,000 | £218,000 |
| 2013 | 1 | £190,000 | £190,000 | £190,000 |
| 2011 | 2 | £193,750 | £187,500 | £200,000 |
| 2010 | 1 | £187,000 | £187,000 | £187,000 |
| 2009 | 1 | £185,000 | £185,000 | £185,000 |
| Date | Address | Type | Price | Notes |
|---|---|---|---|---|
| 9 Dec 2005 | 1 PO21 3LH | Semi-detached | £185,000 | |
| 2 Jun 2003 | 1 PO21 3LH | Semi-detached | £145,000 | |
| 12 Nov 2010 | 2 PO21 3LH | Semi-detached | £187,000 | |
| 27 Mar 2009 | 2 PO21 3LH | Semi-detached | £185,000 | |
| 8 Mar 2004 | 2 PO21 3LH | Semi-detached | £189,950 | |
| 28 Mar 2003 | 2 PO21 3LH | Semi-detached | £169,000 | |
| 30 Sep 1998 | 2 PO21 3LH | Semi-detached | £76,000 | |
| 22 Jul 2022 | 3 PO21 3LH | Semi-detached | £350,000 | |
| 28 Jan 2011 | 4 PO21 3LH | Semi-detached | £200,000 | |
| 4 Feb 1998 | 4 PO21 3LH | Semi-detached | £66,000 | |
| 20 Dec 1999 | 7 PO21 3LH | Semi-detached | £89,500 | |
| 15 May 2024 | 8 PO21 3LH | Semi-detached | £303,000 | |
| 27 May 2011 | 8 PO21 3LH | Semi-detached | £187,500 | |
| 1 Jul 2016 | 10 PO21 3LH | Semi-detached | £240,000 | |
| 24 Mar 1995 | 10 PO21 3LH | Semi-detached | £47,500 | |
| 16 Jul 2013 | 12 PO21 3LH | Semi-detached | £190,000 | |
| 24 Feb 1995 | 12 PO21 3LH | Semi-detached | £52,000 | |
| 29 Jun 2021 | 14 PO21 3LH | Semi-detached | £282,000 | |
| 31 Oct 1995 | 14 PO21 3LH | Semi-detached | £60,000 | |
| 28 Apr 1995 | 15 PO21 3LH | Detached | £72,000 | |
| 25 Jul 2014 | 16 PO21 3LH | Semi-detached | £218,000 | |
| 19 Jan 2018 | 17 PO21 3LH | Detached | £389,950 | |
| 14 Jun 2001 | 17 PO21 3LH | Detached | £171,000 | |
| 3 Nov 1995 | 17 PO21 3LH | Detached | £79,000 | |
| 17 Mar 2021 | 19 PO21 3LH | Detached | £370,000 | |
| 12 Sep 2017 | 19 PO21 3LH | Detached | £340,000 | |
| 31 Aug 2007 | 19 PO21 3LH | Detached | £232,500 | |
| 20 Sep 2023 | 20 PO21 3LH | Detached | £495,000 | |
| 21 Sep 2017 | 24 PO21 3LH | Semi-detached | £288,000 | |
| 8 Sep 2023 | 26 PO21 3LH | Semi-detached | £367,500 | |
| 27 Feb 2014 | 26 PO21 3LH | Semi-detached | £200,000 |
House prices and rents in Arun
A typical home in Arun cost £320,505 in August 2026, 1.2% less than a year before. That is 5% more than five years earlier and 24% more than ten years earlier.
| Home | Typical price, Aug 2026 |
|---|---|
| Detached | £549,293 |
| Semi-detached | £350,575 |
| Terraced | £275,785 |
| Flat or maisonette | £167,944 |
| Bought by a first-time buyer | £253,833 |
Private renters in Arun paid £1,240 a month on average in September 2026, 3.7% more than a year before. That is 36% more than five years earlier.
| Home | Average rent a month, Sep 2026 |
|---|---|
| One bedroom | £855 |
| Two bedrooms | £1,149 |
| Three bedrooms | £1,407 |
| Four or more bedrooms | £1,997 |
Energy performance certificates
3 homes with a current certificate; median floor area 95 m². Most common: Bungalow, detached (2); Bungalow, semi-detached (1). Built: 1950-1966 (3). Tenure at assessment: owner-occupied (3).
Each home's certificates and sales (3 addresses)
Gas and electricity use
Homes with gas used 8,895 kWh of it on average in 2024, 18% less than the district's 10,822 kWh, and 2,693 kWh of electricity, 19% less than the district's 3,341 kWh. There are gas meters for about 91% 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 PO21.
Council tax
What each band costs in Arun in 2026-27: Band D £2,487 a year on average, including the police, fire and any county and parish charges.
| A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|
| £1,658 | £1,935 | £2,211 | £2,487 | £3,040 | £3,593 | £4,145 | £4,974 |
Homes by band in the neighbourhood around this street: most are in band C (54% of about 820 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.
Brownfield land registered for housing within 1 km (0.6 miles)
- Land to the west of Inglenook Hotel 255 Pagham Road: up to 6 homes, pending decision (740 m (0.5 miles))
Energy projects nearby
2 energy projects near the street's postcodes, 1 of them not yet operating.
| Project | Kind | Size | Stage | Distance |
|---|---|---|---|---|
| Sefter Farm AD Plant (Farm AD) Arun P/92/08/ | Anaerobic digestion | 1 MW | Operational Jun 2010 | 1.2 km (0.7 miles) |
| Sefter Farm, Pagham Road - Solar Panels Arun P/60/23/PL | Solar farm | 2 MW | Permission granted, not yet built Sep 2023 | 1.3 km (0.8 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
Finished in the last three months
- 9 October 2026 to 15 October 2026: BT, Utility asset works, some carriageway incursion, on the footway, verge (standard works)
Flood risk
Rivers, the sea or surface water: in this street's postcodes, 0 addresses are in areas at high risk, 0 at medium risk and 2 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.
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
The nearest projected erosion zone is 760 m (0.5 miles) from the street's postcodes (by 2105, if defences are not maintained or built).
| Projection | Policy for the frontage | Erosion | Distance |
|---|---|---|---|
| By 2055, with the shoreline management plan carried out | Hold the line Beachy Head to Selsey Bill | none (the line is held) | 860 m (0.5 miles) |
| By 2105, with the shoreline management plan carried out | Hold the line Beachy Head to Selsey Bill | none (the line is held) | 860 m (0.5 miles) |
| By 2105, if defences are not maintained or built | No intervention Beachy Head to Selsey Bill | up to 100 m | 760 m (0.5 miles) |
Each shoreline management plan sets a policy for each stretch of coast: hold the line (keep defences where they are), managed realignment (let the shore move back in a controlled way), advance the line, or no active intervention. Erosion is the distance the shore may move back, counted from today, for the higher central climate change allowance. The maps are guidance from national modelling, not a survey of any one home; the council's coastal team can say more.
Storm overflows
1 storm overflow within 1 km (0.6 miles) of the street's postcodes spilled 3 times, for 15 hours in all, in 2025. They discharge into Controlled Sea English Channel.
| Overflow | Into | Spills | Hours | Distance |
|---|---|---|---|---|
| Carlton Avenue Bognor Cso Southern Water | Controlled Sea English Channel | 3 | 15 | 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 1 to 3%: 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. 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 addresses are about 6 m above sea level.
Broadband
| Postcode | Superfast (30 Mbit/s+) | Ultrafast (300 Mbit/s+) | Gigabit | Below 10 Mbit/s |
|---|---|---|---|---|
| PO21 3LH | 100% | 100% | 100% | 0% |
Getting around
| Nearest | Distance | |
|---|---|---|
| Railway stations | Bognor Regis 1.1 million journeys in 2024–25 | 3.6 km (2.3 miles) |
| Chichester 2.7 million journeys in 2024–25 | 6.9 km (4.3 miles) | |
| Barnham 1.0 million journeys in 2024–25 | 8.3 km (5.2 miles) | |
| Bus stops | 14 stops within 400 m (0.2 miles), 38 within 800 m (0.5 miles); nearest Greenlea Avenue Nyetimber | 50 m |
| Bus or coach station | Bus Station Chichester | 6.8 km (4.3 miles) |
| Ferry terminal | West Itchenor Ferry Landing | 10.3 km (6.4 miles) |
| EV charging points | 2 within 1.6 km (1 mile); nearest Anson Road | 220 m |
| Airport with scheduled flights | Southampton Airport SOU | 48.2 km (30 miles) |
| Nearest large airport | London Gatwick Airport LGW | 55.8 km (35 miles) |
Local services
| Nearest | Distance | |
|---|---|---|
| GP surgeries | 1 practice within 1.6 km (1 mile); nearest Grove House Surgery Good Sep 2016 | 610 m (0.4 miles) |
| Pharmacies | 2 pharmacies within 1.6 km (1 mile); nearest Rose Green Pharmacy | 1 km (0.6 miles) |
| NHS dentists | 2 practices within 1.6 km (1 mile); nearest Pagham Harbour Dental Practice | 1.4 km (0.9 miles) |
| Hospital | Bognor Regis War Memorial Hospital Cdc | 3.9 km (2.4 miles) |
| Care homes | 1 home within 1.6 km (1 mile); nearest Apsley House Care Home Good Apr 2021 | 750 m (0.5 miles) |
| Police station | Bognor Police Station | 4 km (2.5 miles) |
| Cash machines | The Southern Co-operative Bognor Regis Rose Green Road, Bognor Regis | 830 m (0.5 miles) |
Parks and green space
| Nearest | Distance | |
|---|---|---|
| Park or garden | West Park Amenity Area 5.2 ha | 2.2 km (1.4 miles) |
| Play area | 3 within 800 m (0.5 miles); nearest Unnamed 980 m² | 500 m (0.3 miles) |
| Playing field | 3 within 800 m (0.5 miles); nearest Avisford Park 4.8 ha | 480 m (0.3 miles) |
| Allotments | 1 within 800 m (0.5 miles); nearest Unnamed 1,470 m² | 630 m (0.4 miles) |
Landmarks
The nearest historic landmark is Beckett's Barn and adjoining earthworks, a scheduled monument, 1.9 km (1.2 miles) south-west. 17 listed buildings are within 1 km (0.6 miles).
| Name | What it is | From the middle of the street |
|---|---|---|
| Beckett's Barn and adjoining earthworks | Scheduled monument | 1.9 km (1.2 miles) south-west |
| Name | What it is | From the middle of the street |
|---|---|---|
| Sefter Bottom | Valley | 880 m (0.5 miles) north-west |
| Aldwick Beach | Beach | 1.6 km (1 mile) east |
| Pagham Beach | Beach | 1.7 km (1 mile) south-west |
| Pagham Lagoon | Lake or reservoir | 2.3 km (1.4 miles) south-west |
| Camic Pond | Lake or reservoir | 2.8 km (1.8 miles) north-west |
| Hunston Copse | Wood | 4.5 km (2.8 miles) north-west |
Air quality
| Pollutant | Here | UK limit | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 5.5 | 40 | 10 |
| Fine particles (PM2.5) | 5.7 | 20 | 5 |
| Particles (PM10) | 9.1 | 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 | 9 | 10 |
1 of the street's 10 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 Arun: see them on the Arun page.
Nearest schools
| School | Phase | Ages | Distance | Inspection | Exam results |
|---|---|---|---|---|---|
| Rose Green Infant School | Primary | 4–7 | 260 m | No published inspection | None published |
| Rose Green Junior School | Primary | 7–11 | 520 m (0.3 miles) | Outstanding (Jun 2024, overall grade under the previous framework) | 69% at the expected standard in reading, writing and maths, 7% at the higher standard (2025; 72% in 2024 and 66% 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
5 nurseries, pre-schools and clubs within 1.5 km (0.9 miles), the nearest 220 m from the middle of the street.
| Provider | Kind | Places | Latest inspection | Distance |
|---|---|---|---|---|
| The Learning Station Playschool PO21 3LW | Full day care | 22 | Good (Jan 2023, overall grade under the previous framework) | 220 m |
| JC Sports Holiday Camp at Rose Green Junior School PO21 3NA | Out-of-school day care | 40 | Not inspected yet | 400 m (0.2 miles) |
| Rose Green Breakfast And After School Club PO21 3NA | Out-of-school day care | 30 | Not inspected yet | 400 m (0.2 miles) |
| The Village Station Preschool PO21 4NJ | Sessional day care | 22 | Good (Jul 2022, overall grade under the previous framework) | 860 m (0.5 miles) |
| Little Stones Pre-School Aldwick PO21 3BD | Sessional day care | 30 | Not inspected yet | 1.2 km (0.7 miles) |
Ofsted also registers 388 childminders and 67 home childcarers (nannies) in West Sussex. 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 |
|---|---|---|---|---|
| ISS @ Rose Green Infant School PO21 3LW | School/college/university | 220 m | 5 Very good | 4 Sep 2026 |
| Rose Green Breakfast & After School Club PO21 3NA | School/college/university | 410 m (0.3 miles) | 5 Very good | 8 Feb 2023 |
| JC Sports Online Ltd PO21 3NA | School/college/university | 410 m (0.3 miles) | Awaiting inspection | |
| ISS @ Rose Green Junior School PO21 3NA | School/college/university | 410 m (0.3 miles) | Awaiting inspection |
Crime within 250 m
| Category | Crimes |
|---|---|
| Violence and sexual offences | 13 |
| Anti-social behaviour | 8 |
| Burglary | 3 |
| Criminal damage and arson | 2 |
| Public order | 1 |
| Other theft | 1 |
| Drugs | 1 |
| Other crime | 1 |
| Possession of weapons | 1 |
Most of these are attached to: On or near Hawkins Close (11); On or near Windmill Close (5); On or near Nyetimber Crescent (4); On or near Anson Road (4); On or near Lovells Close (3).
Road safety
4 collisions in which someone was hurt were reported on and around the street in 2021 to 2025: 0 fatal, 2 serious and 2 slight, in which 2 people were seriously hurt. 1 involved a pedestrian; 2 involved a motorcyclist. Most were on roads with a 30 mph limit.
| Year | Collisions | Fatal or serious |
|---|---|---|
| 2021 | 0 | 0 |
| 2022 | 3 | 1 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| Date | Severity | Who was hurt | Road | Conditions |
|---|---|---|---|---|
| 15 Sep 2023 17:55 | Serious | 1 person | Minor road, 30 mph | Daylight |
| 28 Aug 2022 13:35 | Serious | 1 person: 1 motorcyclist | Minor road, 30 mph | Daylight |
| 12 Jul 2022 15:15 | Slight | 1 person: 1 pedestrian | Minor road, 30 mph | Daylight |
| 21 Jan 2022 08:18 | Slight | 1 person: 1 motorcyclist | Minor road, 30 mph | Frost or ice |
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 | 47 | 40 |
| Children under 15 | 15% | 17% |
| Aged 65 and over | 27% | 18% |
Homes
| Around this street | England | |
|---|---|---|
| Owned (outright or with a mortgage) | 80% | 61% |
| Owned outright | 52% | 33% |
| Shared ownership | under 1% | 1% |
| Social rented | 12% | 17% |
| Private rented | 8% | 21% |
Work and commuting
| Around this street | England | |
|---|---|---|
| Adults (16 and over) in work | 50% | 57% |
| Unemployment (of those working or looking for work) | 8% | 6% |
| Retired (of adults) | 33% | 22% |
| Long-term sick or disabled (of adults) | 4% | 4% |
| Work mainly from home (of those in work) | 17% | 32% |
| Travel to work by car or van | 75% | 48% |
| By train, Underground, metro or tram | 0% | 4% |
| By any public transport, including bus | 2% | 8% |
| On foot or by bicycle | 6% | 10% |
| Work within 10 km (6 miles) of home (of those who travel to work) | 68% | 65% |
| Work 30 km (19 miles) or more away | 8% | 8% |
Education and languages
| Around this street | England | |
|---|---|---|
| Degree or other higher qualification, Level 4+ (of adults) | 19% | 34% |
| No qualifications | 21% | 18% |
| Apprenticeship as highest qualification | 10% | 5% |
| Main language English (aged 3 and over) | 98% | 91% |
| Cannot speak English well or at all | 0% | 2% |
Deprivation
The neighbourhood around this street is in decile 4 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
- Roadworks Street works permit: BT: Utility asset works, 9 October 2026 to 16 October 2026 (some carriageway incursion) found 3 November 2026
Postcodes on this street
- PO21 3LH: 10 addresses of 23 in the postcode
Nearby streets
Lovells Close · Leonora Drive · Anson Road · Esher Close · Buckland Drive · Nyetimber Lane · Nyetimber Close · Pyrford Close · Nyetimber Lane · Hawkins Close · Windmill Close · Ruislip Gardens
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.