Chestnut Walk Hitchin, North Hertfordshire
9 addresses across 1 postcode (SG4), about 50 m long, classed as a local road. USRN 27925077.
- Sales: 17 recorded sales since 1995; in 2023 the median was £1,100,000 across 1 sale.
- Prices and rents: A typical home in North Hertfordshire cost £422,835 in August 2026 (+3.1% on a year); private rents averaged £1,445 a month.
- Energy: 7 homes have an energy certificate (C: 5, D: 2).
- 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: 1 historic landfill site within 500 m (0.3 miles) of its postcodes; the nearest, Maydencroft Manor, is 470 m (0.3 miles) away.
- Storm overflows: 1 storm overflow within 1 km (0.6 miles) spilled 2 times (3 hours) in 2025.
- 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.
- Traffic: The busiest counted road within 500 m (0.3 miles), the Minor road, carries 1,259 motor vehicles a day on average (2025).
- Council tax: Most homes around it are in council tax band G; Band D in North Hertfordshire costs £2,449 a year in 2026-27.
- Broadband: Gigabit broadband is available to 100% of premises.
- Transport: The nearest railway station is Hitchin, about 2 km (1.2 miles) away in a straight line.
- Green space: The nearest park or garden, The Village Green, is about 710 m (0.4 miles) away.
- Air: Background air pollution in 2024 was 7.9 µg/m³ of nitrogen dioxide and 7.1 of PM2.5, within UK legal limits.
- Height: Its addresses are 77 to 79 m above sea level.
- Noise: 6 of its 9 addresses are modelled at 55 dB or more from road traffic.
- Doctors: The nearest GP surgery is The Portmill Surgery, about 1.5 km (0.9 miles) away, with 2 practices within 1.6 km (1 mile).
- People: About 320 people lived in the census areas around it in 2021; 93% of households owned their home and 61% of adults held a degree or other higher qualification.
- Crime: 7 crimes were recorded within 250 m between September 2025 and August 2026, most often public order.
- 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 Chestnut Walk: 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 |
|---|---|---|---|---|
| 2023 | 1 | £1,100,000 | £1,100,000 | £1,100,000 |
| 2021 | 1 | £940,000 | £940,000 | £940,000 |
| 2020 | 1 | £785,000 | £785,000 | £785,000 |
| 2014 | 1 | £735,000 | £735,000 | £735,000 |
| 2012 | 1 | £665,000 | £665,000 | £665,000 |
| 2004 | 2 | £515,250 | £492,500 | £538,000 |
| 2002 | 1 | £495,000 | £495,000 | £495,000 |
| 2001 | 1 | £435,000 | £435,000 | £435,000 |
| 1997 | 8 | £280,000 | £240,000 | £295,000 |
| Date | Address | Type | Price | Notes |
|---|---|---|---|---|
| 24 Sep 2012 | 1 SG4 7SS | Detached | £665,000 | |
| 10 Jun 2004 | 1 SG4 7SS | Detached | £492,500 | |
| 19 Dec 1997 | 1 SG4 7SS | Detached | £280,000 | New build. |
| 18 Nov 2014 | 2 SG4 7SS | Detached | £735,000 | |
| 10 Dec 2004 | 2 SG4 7SS | Detached | £538,000 | |
| 12 Aug 1997 | 2 SG4 7SS | Detached | £280,000 | New build. |
| 28 Nov 2023 | 3 SG4 7SS | Detached | £1,100,000 | |
| 19 Dec 1997 | 3 SG4 7SS | Detached | £285,000 | New build. |
| 13 Jan 2021 | 4 SG4 7SS | Detached | £940,000 | |
| 15 May 2002 | 4 SG4 7SS | Detached | £495,000 | |
| 8 Aug 1997 | 4 SG4 7SS | Detached | £295,000 | New build. |
| 27 Aug 2020 | 5 SG4 7SS | Detached | £785,000 | |
| 12 Aug 1997 | 5 SG4 7SS | Detached | £240,000 | New build. |
| 1 Aug 1997 | 6 SG4 7SS | Detached | £275,000 | New build. |
| 26 Sep 2001 | 7 SG4 7SS | Detached | £435,000 | |
| 19 Sep 1997 | 7 SG4 7SS | Detached | £270,000 | New build. |
| 7 Jul 1997 | 8 SG4 7SS | Detached | £285,000 | New build. |
House prices and rents in North Hertfordshire
A typical home in North Hertfordshire cost £422,835 in August 2026, 3.1% more than a year before. That is 12% more than five years earlier and 23% more than ten years earlier.
| Home | Typical price, Aug 2026 |
|---|---|
| Detached | £798,369 |
| Semi-detached | £486,365 |
| Terraced | £383,241 |
| Flat or maisonette | £229,978 |
| Bought by a first-time buyer | £343,025 |
Private renters in North Hertfordshire paid £1,445 a month on average in September 2026, 6.4% more than a year before. That is 38% more than five years earlier.
| Home | Average rent a month, Sep 2026 |
|---|---|
| One bedroom | £1,031 |
| Two bedrooms | £1,293 |
| Three bedrooms | £1,588 |
| Four or more bedrooms | £2,252 |
Energy performance certificates
7 homes with a current certificate; median floor area 202 m². Most common: House, detached (7). Built: 1996-2002 (6); 1991-1995 (1). Tenure at assessment: owner-occupied (7).
Each home's certificates and sales (7 addresses)
Gas and electricity use
Homes with gas used 20,318 kWh of it on average in 2024, 58% more than the district's 12,890 kWh, and 3,837 kWh of electricity, about the same as the district. There are gas meters for about 100% 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 SG4.
Council tax
What each band costs in North Hertfordshire in 2026-27: Band D £2,449 a year on average, including the police, fire and any county and parish charges.
| A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|
| £1,632 | £1,904 | £2,176 | £2,449 | £2,993 | £3,537 | £4,081 | £4,897 |
Homes by band in the neighbourhood around this street: most are in band G (31% of about 870 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)
- Paul Bromfield Aquatics, Maydencroft Lane, Gosmore: up to 10 homes, permissioned (1 km (0.6 miles))
Energy projects nearby
1 energy project near the street's postcodes.
| Project | Kind | Size | Stage | Distance |
|---|---|---|---|---|
| Hitchin North Hertfordshire 04/00779/1CM | Landfill Gas | 1.5 MW | Operational Nov 2006 | 5 km (3.1 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
Rivers, the sea or surface water: in this street's postcodes, 0 addresses are in areas at high risk, 0 at medium risk and 1 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
No projected coastal erosion zone is within 1 km (0.6 miles) of the street's postcodes.
Storm overflows
1 storm overflow within 1 km (0.6 miles) of the street's postcodes spilled 2 times, for 3 hours in all, in 2025. They discharge into Purwell.
| Overflow | Into | Spills | Hours | Distance |
|---|---|---|---|---|
| Pound Farm Pumping Station Anglian Water | Purwell | 2 | 3 | 410 m (0.3 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
1 historic landfill site is within 500 m (0.3 miles) of the street's postcodes, the nearest 470 m (0.3 miles) away.
| Site | Waste went in | Waste | Distance |
|---|---|---|---|
| Maydencroft Manor Gosmore, Hitchin | Not recorded | Not recorded | 470 m (0.3 miles) |
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 9 addresses are between 77 m and 79 m above sea level (78 m on average).
Broadband
| Postcode | Superfast (30 Mbit/s+) | Ultrafast (300 Mbit/s+) | Gigabit | Below 10 Mbit/s |
|---|---|---|---|---|
| SG4 7SS | 100% | 100% | 100% | 0% |
Getting around
| Nearest | Distance | |
|---|---|---|
| Railway stations | Hitchin 2.9 million journeys in 2024–25 | 2 km (1.2 miles) |
| Letchworth Garden City 1.8 million journeys in 2024–25 | 5.6 km (3.5 miles) | |
| Stevenage 4.7 million journeys in 2024–25 | 5.7 km (3.5 miles) | |
| Bus stops | 3 stops within 400 m (0.2 miles), 20 within 800 m (0.5 miles); nearest New England Close Hitchin | 170 m |
| Bus or coach station | Bus Station Stevenage | 5.8 km (3.6 miles) |
| EV charging points | Lairaige Multi storey Car Park GeniePoint | 1.7 km (1.1 miles) |
| Airport with scheduled flights | London Luton Airport LTN | 9.6 km (6 miles) |
Local services
| Nearest | Distance | |
|---|---|---|
| GP surgeries | 2 practices within 1.6 km (1 mile); nearest The Portmill Surgery Good Mar 2017 | 1.5 km (0.9 miles) |
| Pharmacies | 1 pharmacy within 1.6 km (1 mile); nearest Boots | 1.5 km (1 mile) |
| NHS dentists | 5 practices within 1.6 km (1 mile); nearest Bucklersbury (Dental Surgery) | 1.4 km (0.9 miles) |
| Hospital | The Lister Hospital Requires improvement Nov 2023 | 4.1 km (2.6 miles) |
| Care homes | 4 homes within 1.6 km (1 mile); nearest Sloe Hill Residential Home Good May 2025 | 270 m |
| Police station | Hitchin Police Station | 2.1 km (1.3 miles) |
| Cash machines | ATM | 1.2 km (0.7 miles) |
Parks and green space
| Nearest | Distance | |
|---|---|---|
| Park or garden | 1 within 800 m (0.5 miles); nearest The Village Green 8,040 m² | 710 m (0.4 miles) |
| Play area | 2 within 800 m (0.5 miles); nearest Unnamed 690 m² | 730 m (0.5 miles) |
| Playing field | 2 within 800 m (0.5 miles); nearest Unnamed 2.2 ha | 660 m (0.4 miles) |
| Allotments | Unnamed 5,910 m² | 2 km (1.2 miles) |
Within 800 m (0.5 miles): 1 park or garden, 0.8 hectares in all.
Landmarks
The nearest historic landmark is Avenue Farm House, a listed building (Grade II*), 840 m (0.5 miles) south-west. 39 listed buildings are within 1 km (0.6 miles), 1 of them Grade I and 2 of them Grade II*.
| Name | What it is | From the middle of the street |
|---|---|---|
| Avenue Farm House | Listed building, Grade II* | 840 m (0.5 miles) south-west |
| Church of St Ippolyts (Church of England) | Listed building, Grade I | 950 m (0.6 miles) south-east |
| Maydencroft Manor | Listed building, Grade II* | 1 km (0.6 miles) west |
| Temple Dinsley | Registered park or garden, Grade II* | 3 km (1.8 miles) south |
| Name | What it is | From the middle of the street |
|---|---|---|
| Blundell's Copse | Wood | 1.2 km (0.8 miles) west |
| Thistley Pond | Lake or reservoir | 1.2 km (0.8 miles) south |
| Windmill Hill | Hill | 1.4 km (0.9 miles) north |
| Charlton Mill Pond | Lake or reservoir | 1.4 km (0.9 miles) west |
| The Willows | Wood | 1.6 km (1 mile) north-west |
| Langley Valley | Valley | 4.5 km (2.8 miles) south-east |
Air quality
| Pollutant | Here | UK limit | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 7.9 | 40 | 10 |
| Fine particles (PM2.5) | 7.1 | 20 | 5 |
| Particles (PM10) | 12.5 | 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 | 6 | 0 |
| Under 55 | 3 | 9 |
6 of the street's 9 addresses are 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 Hertfordshire: see them on the North Hertfordshire page.
Nearest schools
| School | Phase | Ages | Distance | Inspection | Exam results |
|---|---|---|---|---|---|
| Whitehill Junior School | Primary | 7–11 | 650 m (0.4 miles) | No published inspection | 72% at the expected standard in reading, writing and maths, 15% at the higher standard (2025; 67% in 2024 and 75% in 2023) |
| St Ippolyts Church of England Aided Primary School | Primary | 4–11 | 930 m (0.6 miles) | Good (Apr 2023, overall grade under the previous framework) | 75% at the expected standard in reading, writing and maths, 13% at the higher standard (2025; 83% in 2024 and 85% in 2023) |
| Highbury Infant School and Nursery | Primary | 3–7 | 1.2 km (0.7 miles) | No published inspection | None published |
| Hitchin Girls' School | Secondary | 11–18 | 1.4 km (0.8 miles) | No overall grade (Oct 2024, graded inspection without an overall judgement): Quality of education: Outstanding; Behaviour and attitudes: Outstanding; Personal development: Outstanding; Leadership and management: Outstanding | GCSE 2026 (provisional): Attainment 8 61.8 (57.8 in 2025 and 57.8 in 2024); 74.5% grade 5+ in English and maths A level 2025: average grade B; 14.2% AAB or better; progress average |
| William Ransom Primary School | Primary | 4–11 | 1.5 km (0.9 miles) | No overall grade (Mar 2025, graded inspection without an overall judgement): Quality of education: Requires improvement; Behaviour and attitudes: Good; Personal development: Good; Leadership and management: Requires improvement | 78% at the expected standard in reading, writing and maths, 8% at the higher standard (2025; 72% in 2024 and 68% in 2023) |
| St Andrew's Church of England Voluntary Aided Primary School, Hitchin | Primary | 4–11 | 1.7 km (1 mile) | Report card (Jul 2026): Curriculum and teaching: Expected standard; Achievement: Expected standard; Attendance and behaviour: Strong standard; Personal development and wellbeing: Strong standard; Inclusion: Expected standard; Leadership and governance: Expected standard; Early years: Strong standard; Safeguarding standards: Met | 68% at the expected standard in reading, writing and maths, 0% at the higher standard (2025; 70% in 2024 and 80% in 2023) |
| Mary Exton Primary School | Primary | 5–11 | 1.8 km (1.1 miles) | Good (Sep 2022, overall grade under the previous framework) | 40% at the expected standard in reading, writing and maths, 7% at the higher standard (2025; 33% in 2024 and 43% in 2023) |
| Hitchin Boys' School | Secondary | 11–18 | 1.8 km (1.1 miles) | Report card (Nov 2025): Curriculum and teaching: Strong standard; Achievement: Strong standard; Attendance and behaviour: Exceptional; Personal development and wellbeing: Exceptional; Inclusion: Exceptional; Leadership and governance: Exceptional; Post-16 provision: Strong standard; Safeguarding standards: Met | GCSE 2026 (provisional): Attainment 8 56.8 (57.1 in 2025 and 56.3 in 2024); 65.2% grade 5+ in English and maths A level 2025: average grade B-; 34.2% AAB or better; progress above average |
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
8 nurseries, pre-schools and clubs within 1.5 km (0.9 miles), the nearest 760 m (0.5 miles) from the middle of the street.
| Provider | Kind | Places | Latest inspection | Distance |
|---|---|---|---|---|
| Goslings Playgroup SG4 9HT | Sessional day care | 36 | Good (Dec 2022, overall grade under the previous framework) | 760 m (0.5 miles) |
| The Cookie Club SG4 9HT | Out-of-school day care (over fives) | Not inspected yet | 760 m (0.5 miles) | |
| Hitchin Holiday Camps Whitehill SG4 9HT | Out-of-school day care | 40 | Not inspected yet | 760 m (0.5 miles) |
| Super Camps At Kingshott School SG4 7JX | Out-of-school day care | 91 | Not inspected yet | 860 m (0.5 miles) |
| The Cookie Club Ltd SG4 7PB | Out-of-school day care | 35 | Not inspected yet | 920 m (0.6 miles) |
| The Cookie Club SG4 9AG | Out-of-school day care | 30 | Not inspected yet | 1.1 km (0.7 miles) |
| Theatretrain Hitchin SG4 9RS | Out-of-school day care (over fives) | Not inspected yet | 1.4 km (0.8 miles) | |
| uPlay Sports CIC SG4 9RS | Out-of-school day care (over fives) | Not inspected yet | 1.4 km (0.8 miles) |
Ofsted also registers 841 childminders and 251 home childcarers (nannies) in Hertfordshire. 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 |
|---|---|---|---|---|
| Sloe Hill Residential Home SG4 7NN | Hospitals/Childcare/Caring Premises | 270 m | 2 Improvement necessary | 7 Sep 2026 |
| The Orange Tree SG4 9DR | Pub/bar/nightclub | 450 m (0.3 miles) | 5 Very good | 7 Oct 2026 |
Crime within 250 m
| Category | Crimes |
|---|---|
| Public order | 3 |
| Violence and sexual offences | 2 |
| Burglary | 1 |
| Vehicle crime | 1 |
Most of these are attached to: On or near Chestnut Walk (3); On or near Millfield Lane (1); On or near New England Close (1); On or near Langbridge Close (1); On or near Sycamore Close (1).
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
The busiest counted road within 500 m (0.3 miles) is the Minor road, with 1,259 motor vehicles a day on average in 2025, 240 m from the street's postcodes.
| Road | Between | Vehicles a day | Lorries | Ten years before | Distance |
|---|---|---|---|---|---|
| Minor road | Not recorded | 1,259 counted 2025 | 0% | 240 m |
Each figure is the annual average daily flow: the motor vehicles passing the count point, both ways, on an average day of the year. A point is counted by hand on a weekday every few years and estimated from the trend on similar roads in between. Lorries are heavy goods vehicles, as a share of all motor vehicles.
People and work
Who lives here
| Around this street | England | |
|---|---|---|
| Median age | 51 | 40 |
| Children under 15 | 17% | 17% |
| Aged 65 and over | 26% | 18% |
Homes
| Around this street | England | |
|---|---|---|
| Owned (outright or with a mortgage) | 93% | 61% |
| Owned outright | 62% | 33% |
| Shared ownership | 0% | 1% |
| Social rented | 3% | 17% |
| Private rented | 4% | 21% |
Work and commuting
| Around this street | England | |
|---|---|---|
| Adults (16 and over) in work | 54% | 57% |
| Unemployment (of those working or looking for work) | 3% | 6% |
| Retired (of adults) | 31% | 22% |
| Long-term sick or disabled (of adults) | 0% | 4% |
| Work mainly from home (of those in work) | 59% | 32% |
| Travel to work by car or van | 34% | 48% |
| By train, Underground, metro or tram | 4% | 4% |
| By any public transport, including bus | 4% | 8% |
| On foot or by bicycle | 3% | 10% |
| Work within 10 km (6 miles) of home (of those who travel to work) | 64% | 65% |
| Work 30 km (19 miles) or more away | 19% | 8% |
Education and languages
| Around this street | England | |
|---|---|---|
| Degree or other higher qualification, Level 4+ (of adults) | 61% | 34% |
| No qualifications | 6% | 18% |
| Apprenticeship as highest qualification | 2% | 5% |
| Main language English (aged 3 and over) | 97% | 91% |
| Cannot speak English well or at all | under 1% | 2% |
Deprivation
The neighbourhood around this street is in decile 10 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
- SG4 7SS: 9 addresses of 16 in the postcode
Nearby streets
Broadmeadow Ride · Ash Drive · Elderberry Drive · Larch Avenue · New England Close · Rowan Grove · Grange Close · Millfield Lane · Tall Trees · Blackhorse Lane · Langbridge Close · Sycamore Close
All the streets in SG4 and across North Hertfordshire.
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.