Roydon Road Stanstead Abbotts, East Hertfordshire

230 addresses across 12 postcodes (SG12), about 3 km (1.9 miles) long, classed as a b road. USRN 12414826.

  • Sales: 159 recorded sales since 1995; in 2026 the median was £510,000 across 3 sales.
  • Energy: 53 homes have an energy certificate (B: 1, C: 13, D: 23, E: 15, G: 1).
  • Flood: 35 addresses on its postcodes are in areas at high or medium risk of flooding from rivers, the sea or surface water.
  • Council tax: Most homes around it are in council tax band C; Band D in East Hertfordshire costs £2,455 a year in 2026-27.
  • Broadband: Gigabit broadband is available to 0% to 100% of premises.
  • Transport: The nearest railway station is St Margarets (Herts), about 1.3 km (0.8 miles) away in a straight line.
  • Green space: The nearest park or garden is about 1.1 km (0.7 miles) away.
  • Air: Background air pollution in 2024 was 9.3 µg/m³ of nitrogen dioxide and 7.3 of PM2.5, within UK legal limits.
  • Height: Its addresses are 29 to 60 m above sea level.
  • Noise: 93 of its 230 addresses are modelled at 55 dB or more from road traffic.
  • Doctors: The nearest GP surgery is Hailey View Surgery, about 2.6 km (1.6 miles) away.
  • People: About 1,170 people lived in the census areas around it in 2021; 66% of households owned their home and 30% of adults held a degree or other higher qualification.
  • Crime: 2 crimes were recorded within 250 m between September 2025 and August 2026, most often criminal damage and arson.

Sales on this street

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

Sales by year (standard sales only; repossessions and buy-to-let transfers excluded)
YearSalesMedian priceLowestHighest
20263£510,000£416,500£622,500
20254£381,250£335,000£475,000
20246£452,500£254,000£2,500,000
20234£385,476£365,000£585,000
20222£805,000£260,000£1,350,000
20214£315,250£258,000£385,000
20204£432,500£270,000£530,000
20192£374,500£329,000£420,000
20184£363,500£254,000£520,000
20172£334,650£262,300£407,000
20166£352,475£190,000£510,000
20153£390,000£170,000£442,000
Most recent sales (latest 50 of 159)
DateAddressTypePriceNotes
13 May 202631A SG12 8HQSemi-detached£622,500
2 Mar 202638 SG12 8HATerraced£510,000
13 Feb 202625 SG12 8HQTerraced£416,500
17 Oct 20251A SG12 8HQTerraced£335,000
10 Jul 202534 SG12 8HATerraced£362,500
30 Jan 20254 SG12 8EZTerraced£475,000
24 Jan 202521 SG12 8HQTerraced£400,000
5 Nov 2024NETHERFIELD HOUSE SG12 8JRDetached£2,500,000
31 Oct 202443 SG12 8HQTerraced£345,000
28 Oct 202431 SG12 8HQSemi-detached£560,000
27 Sep 202416 SG12 8EZTerraced£725,000
9 May 202446 SG12 8HATerraced£315,000
28 Mar 202450 SG12 8HATerraced£254,000
14 Dec 20238 SG12 8EZDetached£370,952
26 Jun 202312 SG12 8EZSemi-detached£585,000
19 May 202395 SG12 8JPSemi-detached£400,000
17 May 20232 FARM COTTAGE, COLD HARBOUR FARM SG12 8JUSemi-detached£365,000
14 Sep 202252 SG12 8HASemi-detached£260,000
21 Jan 202237 SG12 8HQDetached£1,350,000
28 Jul 202150 SG12 8HATerraced£258,000
25 Jun 202118 SG12 8EZTerraced£362,500
3 Jun 202134 SG12 8HATerraced£385,000
29 Jan 20211A SG12 8HQTerraced£268,000
30 Dec 202046 SG12 8HATerraced£270,000
11 Dec 202029 SG12 8HQDetached£530,000
16 Nov 2020THE RECTORY, 54 SG12 8HAOther£1,825,000Not a standard sale (repossession, buy-to-let or transfer).
20 Jul 202010 SG12 8EZSemi-detached£485,000
31 Jan 202020 SG12 8EZTerraced£380,000
29 Nov 201936 SG12 8HATerraced£329,000
8 Nov 201949 SG12 8HQTerraced£420,000
2 Jul 201850 SG12 8HATerraced£254,000
28 Feb 201825 SG12 8HQTerraced£390,000
23 Feb 201834 SG12 8HATerraced£337,000
29 Jan 201812 SG12 8EZSemi-detached£520,000
15 Dec 201750 SG12 8HATerraced£262,300
4 Aug 201751 SG12 8HQTerraced£407,000
8 Nov 201673 SG12 8HQDetached£510,000
4 Nov 20164 SG12 8EZTerraced£415,000
4 Nov 201623A SG12 8HQTerraced£355,000
25 Apr 201655B SG12 8HQFlat or maisonette£285,000Leasehold.
29 Feb 201623 SG12 8HQTerraced£349,950
19 Feb 201618 SG12 8EZTerraced£190,000
19 May 201531 SG12 8HQSemi-detached£390,000
26 Mar 201516 SG12 8EZTerraced£442,000
20 Feb 201548 SG12 8HATerraced£170,000
30 Oct 201434 SG12 8HATerraced£270,000
3 Oct 201451 SG12 8HQTerraced£340,000
26 Sep 201438 SG12 8HATerraced£350,000
9 May 201455A SG12 8HQFlat or maisonette£201,500Leasehold.
7 Feb 20144 SG12 8EZTerraced£299,995

Energy performance certificates

Source: Energy Performance of Buildings Register (MHCLG), register as at 1 November 2026. Latest certificate per address; certificates last ten years, so the oldest here dates from December 2008 and some homes have none. Address data © Ordnance Survey and Royal Mail, shown for understanding the energy efficiency of buildings only.

53 homes with a current certificate; median floor area 84 m². Most common: House, mid-terrace (15); House, end-terrace (13); House, semi-detached (10). Built: before 1900 (16); 1900-1929 (10); 1976-1982 (5). Tenure at assessment: owner-occupied (30); rented (private) (12).

Each home's certificates and sales (25 addresses)

Council tax

What each band costs in East Hertfordshire in 2026-27: Band D £2,455 a year on average, including the police, fire and any county and parish charges.

ABCDEFGH
£1,637£1,909£2,182£2,455£3,000£3,546£4,091£4,910

Homes by band in the neighbourhood around this street: most are in band C (34% of about 620 homes).

Sources: Valuation Office Agency, Council Tax: stock of properties, homes at 31 March 2026 (counts rounded to the nearest 10), for the neighbourhood (census area of about 700 homes) around it, not just this street; Ministry of Housing, Communities and Local Government, council tax levels 2026-27. Bands are charged as fixed shares of Band D; the actual bill depends on the parish and on discounts such as the single-person discount. Check a home's own band with the official council tax band checker.

Planning and heritage

  • Conservation area: yes, Stanstead Abbotts (council page). Extensions, demolition, some windows and doors, and work on trees need consent.
  • Listed buildings on or by this street: 42.
  • 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: yes, East Hertfordshire.

Listed buildings

And 12 more.

Brownfield land registered for housing within 1 km (0.6 miles)

Source: planning.data.gov.uk (Ministry of Housing, Communities and Local Government), compiled from councils and, for listed buildings, Historic England's National Heritage List. Conservation areas, Article 4 directions, tree preservation areas and the green belt are checked at each postcode's centre. Listed buildings and protected trees are counted on or by this street. Councils publish Article 4 directions, tree preservation orders and brownfield registers to different standards, and some not yet. Planning applications are not here: there is no national open record of them yet.

Roadworks

Started, not reported finished by 31 October 2026

  • 12 October 2026 to 17 October 2026: HERTFORDSHIRE COUNTY COUNCIL, Highway repair and maintenance works, road closure, on the carriageway (major works)

Planned, as of 31 October 2026

  • 27 November 2026 to 3 December 2026: BT, Utility repair and maintenance works, multi-way signals, on the carriageway, verge (standard works)

Finished in the last three months

  • 15 October 2026: NATIONAL GRID ELECTRICITY TRANSMISSION, Utility asset works, two-way signals, on the carriageway (minor works)
  • 9 October 2026: NATIONAL GRID ELECTRICITY TRANSMISSION, Utility asset works, two-way signals, on the carriageway (minor works)
  • 24 September 2026: HERTFORDSHIRE COUNTY COUNCIL, Highway repair and maintenance works, multi-way signals, on the carriageway (minor works)
  • 17 September 2026 to 18 September 2026: BT, Utility repair and maintenance works, some carriageway incursion, on the footway (immediate - urgent works)
  • 16 September 2026 to 19 September 2026: VIRGIN MEDIA, Utility repair and maintenance works, some carriageway incursion, on the footway (immediate - urgent works)
  • 3 September 2026: HERTFORDSHIRE COUNTY COUNCIL, Highway repair and maintenance works, some carriageway incursion, on the footway (immediate - urgent works)
  • 3 September 2026: HERTFORDSHIRE COUNTY COUNCIL, Highway repair and maintenance works, some carriageway incursion, on the footway (immediate - urgent works)
  • 1 September 2026: VIRGIN MEDIA, Permanent reinstatement, no carriageway incursion, on the footway (minor works)
  • 27 July 2026 to 12 August 2026: CADENT GAS LIMITED, Utility asset works, multi-way signals, on the footway, carriageway (standard works)
  • 1 June 2026 to 29 October 2026: NATIONAL GRID ELECTRICITY TRANSMISSION, Optional permit (no fee) e.g. for traffic management etc, no carriageway incursion, on the verge (major works)

Source: Department for Transport, Street Manager open data, permits and works up to 31 October 2026. It is published once a month, so works arranged or started since then are not shown, and dates are the ones planned unless the works have started or finished. Emergency works are often permitted after they begin.

Flood risk

Rivers, the sea or surface water: in this street's postcodes, 28 addresses are in areas at high risk, 7 at medium risk and 52 at low risk. Each address counts once, at the higher of its rivers-and-sea and surface-water risk.

Rivers and the sea alone: of the 87 homes the Environment Agency counts, 28 are in areas at high risk, 5 medium, 7 low and 0 very low.

High: 3.3% (1 in 30) or more chance of flooding a year. Medium: 1% to 3.3%. Low: 0.1% to 1%. Very low: under 0.1%. The rivers and sea figures allow for flood defences. Counts cover whole postcodes, which can include other streets.

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

PostcodePlanning zoneAddresses at high / medium / low riskGroundwater
SG12 8UUzone 2 0 / 0 / 28 unlikely
SG12 8HQzone 3 23 / 5 / 7 unlikely
SG12 8HGzone 2 0 / 0 / 13 unlikely
SG12 8HAnot in 2 or 3 1 / 0 / 0 unlikely
SG12 8JZnot in 2 or 3 0 / 0 / 0 unlikely
SG12 8EZnot in 2 or 3 4 / 1 / 3 unlikely
SG12 8HNzone 2 0 / 0 / 0 unlikely
SG12 8JRnot in 2 or 3 0 / 0 / 0 unlikely
SG12 8JUnot in 2 or 3 0 / 0 / 0 unlikely
SG12 8JPnot in 2 or 3 0 / 1 / 1 unlikely
SG12 8HBnot in 2 or 3 0 / 0 / 0 unlikely
SG12 8XLzone 2 0 / 0 / 0 unlikely

Sources: Environment Agency Flood risk: postcode search tool data (loaded 29 October 2026), Risk of Flooding from Rivers and Sea: postcodes in areas at risk (loaded 29 October 2026) and Flood Map for Planning (loaded 28 October 2026). Flood zones are checked at each postcode's centre point. These are models of areas, which their publishers say are not suitable for showing whether an individual property is at risk, and they do not cover flooding from sewers or drains. Check an address on the official long-term flood risk service.

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

Height above sea level

The street's 231 addresses are between 29 m and 60 m above sea level (33 m on average); the ground rises about 30 m from the lowest to the highest.

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

Broadband

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

Availability by postcode (% of premises)
PostcodeSuperfast (30 Mbit/s+)Ultrafast (300 Mbit/s+)GigabitBelow 10 Mbit/s
SG12 8EZ100%93%93%0%
SG12 8HA100%100%100%0%
SG12 8HB100%100%100%0%
SG12 8HG100%50%0%0%
SG12 8HN100%29%0%0%
SG12 8HQ100%100%100%0%
SG12 8JP100%100%100%0%
SG12 8JR100%100%100%0%
SG12 8JU100%100%100%0%
SG12 8JZ0%0%0%0%
SG12 8XL100%100%100%0%

Getting around

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

NearestDistance
Railway stationsSt Margarets (Herts) 351,000 journeys in 2024–251.3 km (0.8 miles)
Roydon 133,000 journeys in 2024–251.5 km (0.9 miles)
Rye House 436,000 journeys in 2024–251.9 km (1.2 miles)
Bus stops4 stops within 400 m (0.2 miles), 6 within 800 m (0.5 miles); nearest Coldharbour Farm Stanstead Abbotts280 m
Bus or coach stationTemp Bus Station Harlow Town Centre5.3 km (3.3 miles)
Car parksSt Margarets Station Car Park1.3 km (0.8 miles)
EV charging pointsMFG Charging Station3.2 km (2 miles)
Airport with scheduled flightsLondon Stansted Airport STN18.6 km (12 miles)

Local services

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

NearestDistance
GP surgeriesHailey View Surgery2.6 km (1.6 miles)
Pharmacies1 pharmacies within 1.6 km (1 mile); nearest The Village Pharmacy1.1 km (0.7 miles)
NHS dentists1 practices within 1.6 km (1 mile); nearest Dental Surgery1 km (0.6 miles)
HospitalThe Princess Alexandra Hospital4.9 km (3 miles)
Police stationHoddesdon Police Station4 km (2.5 miles)
Cash machinesMorrisons Daily - Roydon High Street Cashzone2 km (1.2 miles)

Parks and green space

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

NearestDistance
Park or gardenUnnamed 1.2 ha1.1 km (0.7 miles)
Play areaUnnamed 140 m²1.1 km (0.7 miles)
Playing fieldSt Margaretsbury 6.9 ha1.6 km (1 mile)
AllotmentsUnnamed 9,320 m²1 km (0.6 miles)

Landmarks

The nearest historic landmark is The Baish Almshouses and Attached Forecourt Wall, a listed building (Grade II*), 390 m west. 50 listed buildings are within 1 km (0.6 miles), 1 of them Grade I and 5 of them Grade II*.

Historic places
NameWhat it isFrom the middle of the street
The Baish Almshouses and Attached Forecourt WallListed building, Grade II*390 m west
Stanstead BuryListed building, Grade II*640 m (0.4 miles) east
Old Church of St JamesListed building, Grade I680 m (0.4 miles) south-east
The Clock HouseListed building, Grade II*890 m (0.6 miles) north-west
Stanstead BuryRegistered park or garden, Grade II1 km (0.6 miles) east
Rye House moated enclosure and gatehouseScheduled monument1.7 km (1.1 miles) south-west
BriggensRegistered park or garden, Grade II2 km (1.2 miles) east
Natural landmarks within 5 km (3.1 miles)
NameWhat it isFrom the middle of the street
Coldharbour WoodWood330 m east
The GroveWood810 m (0.5 miles) east
Long SpringWood1 km (0.6 miles) north-east
Square SpringWood1.4 km (0.9 miles) north-east
Mill StreamLake or reservoir1.4 km (0.9 miles) south-east
Brokengall HillHill3.3 km (2 miles) north-west

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

Air quality

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

Annual means in µg/m³ (micrograms per cubic metre of air)
PollutantHereUK limitWHO guideline
Nitrogen dioxide (NO2)9.34010
Fine particles (PM2.5)7.3205
Particles (PM10)12.14015

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

Road and rail noise

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

Addresses by modelled noise level (Lden, dB)
LevelRoad trafficRailways
65 to 6990
60 to 64350
55 to 59490
Under 55137230

93 of the street's 230 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 East Hertfordshire: see them on the East Hertfordshire page.

Nearest schools

Source: Get Information About Schools (Department for Education), 3 November 2026; Ofsted monthly management information as at September 2026. Distances are straight lines from the middle of the street to the school; catchments and admissions are not shown. Since November 2025 Ofsted gives report-card grades by area, not one overall grade; older grades stand until a school is re-inspected.

SchoolPhaseAgesDistanceInspection
St Andrew's Church of England Voluntary Controlled Primary SchoolPrimary3–11860 m (0.5 miles) No published inspection
The John Warner SchoolSecondary11–181.8 km (1.1 miles) Inadequate (Oct 2022, overall grade under the previous framework)
The Cranbourne Primary SchoolPrimary4–112 km (1.2 miles) Good (Feb 2020, overall grade under the previous framework)

Food hygiene ratings nearby

Source: Food Standards Agency, Food Hygiene Rating Scheme, extract of 3 November 2026. Each rating is shown with the date it was given; a business may have been re-inspected since the extract. Within 500 m (0.3 miles) of the middle of the street.

No rated food businesses within 500 m (0.3 miles).

Crime within 250 m

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

2 recorded crimes by category
CategoryCrimes
Criminal damage and arson1
Other theft1

Most of these are attached to: On or near Roydon Road (2).

People and work

Source: ONS Census 2021, taken on 21 March 2021, for the 3 Output Areas (small census areas of about 125 households each) that this street's postcodes are in: 1,172 residents in 469 households. The census was taken during a lockdown, so working from home is high and travel to work low compared with now. ONS swaps a few records between neighbouring areas and adds small amounts of noise to counts to protect privacy, so small differences mean little. Industry is not published for areas this small.

Who lives here

Around this streetEngland
Median age4540
Children under 1517%17%
Aged 65 and over19%18%

Homes

Around this streetEngland
Owned (outright or with a mortgage)66%61%
Owned outright36%33%
Shared ownershipunder 1%1%
Social rented10%17%
Private rented24%21%

Work and commuting

Around this streetEngland
Adults (16 and over) in work58%57%
Unemployment (of those working or looking for work)4%6%
Retired (of adults)21%22%
Long-term sick or disabled (of adults)3%4%
Work mainly from home (of those in work)35%32%
Travel to work by car or van48%48%
By train, Underground, metro or tram6%4%
By any public transport, including bus6%8%
On foot or by bicycle6%10%
Work within 10 km (6 miles) of home (of those who travel to work)52%65%
Work 30 km (19 miles) or more away15%8%

Education and languages

Around this streetEngland
Degree or other higher qualification, Level 4+ (of adults)30%34%
No qualifications21%18%
Apprenticeship as highest qualification5%5%
Main language English (aged 3 and over)97%91%
Cannot speak English well or at allunder 1%2%

Deprivation

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

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

What has changed

  • Roadworks Street works permit: BT: Utility repair and maintenance works, 27 November 2026 to 3 December 2026 (multi-way signals) found 3 November 2026

Everything that has changed on and near this street

Postcodes on this street

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

Nearby streets

Kitten Lane · Netherfield Lane

All the streets in SG12 and across East 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.
  • 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.