Portlock Road Maidenhead
103 addresses across 3 postcodes (SL6), about 330 m long, classed as a local road. USRN 44401218.
- Sales: 207 recorded sales since 1995; in 2026 the median was £545,000 across 1 sale.
- Energy: 66 homes have an energy certificate (B: 6, C: 6, D: 36, E: 14, F: 4).
- Flood: 1 address on its postcodes is 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 D; Band D in Windsor and Maidenhead costs £1,953 a year in 2026-27.
- Broadband: Gigabit broadband is available to 93% to 100% of premises.
- Transport: The nearest railway station is Furze Platt, about 1.6 km (1 mile) away in a straight line.
- Green space: The nearest park or garden is about 290 m away.
- Air: Background air pollution in 2024 was 10.0 µg/m³ of nitrogen dioxide and 7.5 of PM2.5, within UK legal limits.
- Height: Its addresses are 50 to 51 m above sea level.
- Noise: 2 of its 103 addresses are modelled at 55 dB or more from road traffic.
- Doctors: The nearest GP surgery is The Symons Medical Centre, about 380 m away, with 4 practices within 1.6 km (1 mile).
- People: About 970 people lived in the census areas around it in 2021; 56% of households owned their home and 50% of adults held a degree or other higher qualification.
- Crime: 47 crimes were recorded within 250 m between September 2025 and August 2026, most often violence and sexual offences.
Sales on this street
| Year | Sales | Median price | Lowest | Highest |
|---|---|---|---|---|
| 2026 | 1 | £545,000 | £545,000 | £545,000 |
| 2025 | 5 | £600,000 | £426,000 | £645,000 |
| 2024 | 7 | £560,000 | £480,000 | £650,000 |
| 2023 | 7 | £512,500 | £262,000 | £750,000 |
| 2022 | 5 | £516,550 | £435,000 | £681,000 |
| 2021 | 7 | £460,000 | £413,000 | £525,000 |
| 2020 | 2 | £429,750 | £415,000 | £444,500 |
| 2019 | 6 | £400,000 | £330,000 | £485,000 |
| 2018 | 5 | £470,000 | £425,000 | £590,000 |
| 2017 | 1 | £420,000 | £420,000 | £420,000 |
| 2016 | 6 | £470,000 | £375,000 | £585,000 |
| 2015 | 13 | £345,000 | £290,000 | £439,950 |
| Date | Address | Type | Price | Notes |
|---|---|---|---|---|
| 19 May 2026 | 42 SL6 6DZ | Semi-detached | £545,000 | |
| 18 Nov 2025 | 12 SL6 6DZ | Terraced | £625,000 | |
| 24 Jul 2025 | 50 SL6 6DZ | Semi-detached | £426,000 | |
| 11 Jul 2025 | 84A SL6 6DZ | Detached | £600,000 | |
| 30 Jun 2025 | 4 SL6 6DZ | Terraced | £465,000 | |
| 21 Feb 2025 | 64 SL6 6DZ | Semi-detached | £645,000 | |
| 18 Dec 2024 | 9 SL6 6DX | Semi-detached | £535,000 | |
| 12 Nov 2024 | 52 SL6 6DZ | Terraced | £625,000 | |
| 18 Oct 2024 | 62 SL6 6DZ | Semi-detached | £535,000 | |
| 11 Oct 2024 | 86 SL6 6DZ | Semi-detached | £583,000 | |
| 23 Aug 2024 | 19 SL6 6DX | Terraced | £650,000 | |
| 31 May 2024 | 42 SL6 6DZ | Semi-detached | £560,000 | |
| 1 Mar 2024 | 60 SL6 6DZ | Terraced | £480,000 | |
| 1 Nov 2023 | 14 SL6 6DZ | Semi-detached | £466,000 | |
| 9 Oct 2023 | FLAT 2, 82A SL6 6DZ | Flat or maisonette | £262,000 | Leasehold. |
| 18 Sep 2023 | 65 SL6 6DX | Terraced | £695,000 | |
| 23 Aug 2023 | 24 SL6 6DZ | Terraced | £512,500 | |
| 14 Jul 2023 | 11 SL6 6DX | Terraced | £633,500 | |
| 16 Jun 2023 | 70 SL6 6DZ | Semi-detached | £750,000 | |
| 21 Apr 2023 | 60 SL6 6DZ | Terraced | £385,000 | |
| 7 Dec 2022 | 49 SL6 6DX | Terraced | £495,000 | |
| 25 Nov 2022 | 46 SL6 6DZ | Terraced | £516,550 | |
| 16 Nov 2022 | 35 SL6 6DX | Semi-detached | £681,000 | |
| 17 Jan 2022 | 75 SL6 6DX | Semi-detached | £652,000 | |
| 14 Jan 2022 | 11 SL6 6DX | Terraced | £435,000 | |
| 10 Dec 2021 | 27 SL6 6DX | Semi-detached | £525,000 | |
| 29 Oct 2021 | 82A SL6 6DZ | Other | £35,000 | Not a standard sale (repossession, buy-to-let or transfer). |
| 21 Oct 2021 | 43 SL6 6DX | Semi-detached | £430,000 | |
| 30 Jun 2021 | 61 SL6 6DX | Detached | £520,000 | |
| 30 Mar 2021 | 42 SL6 6DZ | Semi-detached | £413,000 | |
| 19 Mar 2021 | 62 SL6 6DZ | Semi-detached | £460,000 | |
| 26 Feb 2021 | 18 SL6 6DZ | Terraced | £485,000 | |
| 12 Feb 2021 | 59 SL6 6DX | Semi-detached | £437,500 | |
| 13 Nov 2020 | 54 SL6 6DZ | Semi-detached | £415,000 | |
| 14 Feb 2020 | 49 SL6 6DX | Terraced | £444,500 | |
| 13 Dec 2019 | 6 SL6 6DZ | Terraced | £400,000 | |
| 27 Aug 2019 | 57 SL6 6DX | Semi-detached | £356,000 | |
| 17 May 2019 | 58 SL6 6DZ | Semi-detached | £485,000 | |
| 28 Feb 2019 | 22 SL6 6DZ | Terraced | £485,000 | |
| 18 Jan 2019 | 12 SL6 6DZ | Terraced | £330,000 | |
| 3 Jan 2019 | 51 SL6 6DX | Terraced | £400,000 | |
| 23 Nov 2018 | 55 SL6 6DX | Terraced | £470,000 | |
| 31 Jul 2018 | 47 SL6 6DX | Semi-detached | £425,000 | |
| 24 Apr 2018 | 76 SL6 6DZ | Semi-detached | £515,000 | |
| 13 Apr 2018 | 20 SL6 6DZ | Terraced | £455,000 | |
| 1 Mar 2018 | 75 SL6 6DX | Semi-detached | £590,000 | |
| 3 Feb 2017 | 86 SL6 6DZ | Semi-detached | £420,000 | |
| 28 Oct 2016 | 40 SL6 6DZ | Terraced | £465,000 | |
| 5 Aug 2016 | 30 SL6 6DZ | Terraced | £475,000 | |
| 8 Jul 2016 | 82 SL6 6DZ | Detached | £585,000 |
Energy performance certificates
66 homes with a current certificate; median floor area 82 m². Most common: House, mid-terrace (23); House, end-terrace (20); House, semi-detached (11). Built: 1900-1929 (40); 1930-1949 (13); 2014 (6). Tenure at assessment: owner-occupied (45); rented (private) (11); rented (social) (1).
Each home's certificates and sales (40 addresses)
- 1, Portlock Road
- 2, Portlock Road
- 5, Portlock Road
- 9, Portlock Road
- 11, Portlock Road
- 15, Portlock Road
- 18, Portlock Road
- 20, Portlock Road
- 22, Portlock Road
- 24, Portlock Road
- 25, Portlock Road
- 26, Portlock Road
- 30, Portlock Road
- 33, Portlock Road
- 45, Portlock Road
- 47, Portlock Road
- 49, Portlock Road
- 50, Portlock Road
- 51, Portlock Road
- 53, Portlock Road
- 55, Portlock Road
- 57, Portlock Road
- 58, Portlock Road
- 61, Portlock Road
- 66, Portlock Road
- 67, Portlock Road
- 70, Portlock Road
- 71, Portlock Road
- 72, Portlock Road
- 75, Portlock Road
- 76, Portlock Road
- 80, Portlock Road
- 81, Portlock Road
- 82, Portlock Road
- Flat 1, 82a, Portlock Road
- Flat 1, 82b, Portlock Road
- Flat 2, 82a, Portlock Road
- Flat 2, 82b, Portlock Road
- Flat 3, 82a, Portlock Road
- Flat 4, 82a, Portlock Road
Council tax
What each band costs in Windsor and Maidenhead in 2026-27: Band D £1,953 a year on average, including the police, fire and any county and parish charges.
| A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|
| £1,302 | £1,519 | £1,736 | £1,953 | £2,387 | £2,820 | £3,254 | £3,905 |
Homes by band in the neighbourhood around this street: most are in band D (51% of about 690 homes).
Planning and heritage
- Conservation area: no postcode centre in this street's postcodes is in one.
- Listed buildings on or by this street: 2.
- 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.
Listed buildings
- LODGE HOUSE 14 METRES SOUTH EAST OF MAIN BUILDING, ST MARK'S HOSPITAL, grade II
- PAVILION 40 METRES SOUTH EAST OF MAIN BUILDING, ST MARK'S HOSPITAL, grade II
Brownfield land registered for housing within 1 km (0.6 miles)
- (Osbornes Garage) 55 St Marks Road Maidenhead Berkshire SL6 6DL (180 m)
- St Marks Hospital, Maidenhead: up to 45 homes, not permissioned (420 m (0.3 miles))
- School on College Avenue, REC (900 m (0.6 miles))
- Middlehurst Ltd, 99 - 103 Boyn Valley Road, REC (940 m (0.6 miles))
Roadworks
Planned, as of 31 October 2026
- 6 November 2026: ROYAL BOROUGH OF WINDSOR AND MAIDENHEAD, Highway improvement works, some carriageway incursion, on the footway (minor works)
Finished in the last three months
- 20 October 2026 to 26 October 2026: SCOTTISH AND SOUTHERN POWER DISTRIBUTION (SSEPD), Utility repair and maintenance works, give and take, on the footway (immediate - urgent works)
- 27 August 2026 to 31 August 2026: SOUTH EAST WATER, Utility repair and maintenance works, no carriageway incursion, on the footway (immediate - urgent works)
- 26 August 2026 to 27 August 2026: THAMES WATER, Utility repair and maintenance works, road closure, on the carriageway (major works)
Flood risk
Rivers, the sea or surface water: in this street's postcodes, 0 addresses are in areas at high risk, 1 at medium risk and 8 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 on this street is in flood zone 2 or 3.
| Postcode | Planning zone | Addresses at high / medium / low risk | Groundwater |
|---|---|---|---|
| SL6 6DZ | not in 2 or 3 | 0 / 0 / 2 | unlikely |
| SL6 6DX | not in 2 or 3 | 0 / 1 / 5 | unlikely |
| SL6 6TT | not in 2 or 3 | 0 / 0 / 1 | unlikely |
Height above sea level
The street's 103 addresses are between 50 m and 51 m above sea level (50 m on average).
Broadband
| Postcode | Superfast (30 Mbit/s+) | Ultrafast (300 Mbit/s+) | Gigabit | Below 10 Mbit/s |
|---|---|---|---|---|
| SL6 6DX | 100% | 100% | 100% | 0% |
| SL6 6DZ | 100% | 93% | 93% | 0% |
| SL6 6TT | 100% | 100% | 100% | 0% |
Getting around
| Nearest | Distance | |
|---|---|---|
| Railway stations | Furze Platt 178,000 journeys in 2024–25 | 1.6 km (1 mile) |
| Maidenhead 4.9 million journeys in 2024–25 | 1.6 km (1 mile) | |
| Cookham 204,000 journeys in 2024–25 | 4.1 km (2.6 miles) | |
| Bus stops | 13 stops within 400 m (0.2 miles), 44 within 800 m (0.5 miles); nearest St Mark's Hospital | 130 m |
| Car parks | 2 within 800 m (0.5 miles); nearest Danes Court Car Park | 380 m |
| EV charging points | 5 within 1.6 km (1 mile); nearest Cromwell Road | 420 m (0.3 miles) |
| Airport with scheduled flights | London Heathrow Airport LHR | 20.6 km (13 miles) |
Local services
| Nearest | Distance | |
|---|---|---|
| GP surgeries | 4 practices within 1.6 km (1 mile); nearest The Symons Medical Centre | 380 m |
| Pharmacies | 6 pharmacies within 1.6 km (1 mile); nearest Keycircle Pharmacy | 380 m |
| NHS dentists | 6 practices within 1.6 km (1 mile); nearest Berkshire Cds Headquarters | 210 m |
| Hospital | St Mark's Hospital | 210 m |
| Police station | Maidenhead Police Station | 2.1 km (1.3 miles) |
| Cash machines | Shop Daily Ltd Cashzone | 1.4 km (0.9 miles) |
Parks and green space
| Nearest | Distance | |
|---|---|---|
| Park or garden | 2 within 800 m (0.5 miles); nearest Unnamed 2.9 ha | 290 m |
| Play area | 4 within 800 m (0.5 miles); nearest Unnamed 120 m² | 140 m |
| Playing field | 2 within 800 m (0.5 miles); nearest Oaken Grove Park 8.2 ha | 550 m (0.3 miles) |
| Allotments | 2 within 800 m (0.5 miles); nearest St Marks Crescent Allotments 1.3 ha | 420 m (0.3 miles) |
Within 800 m (0.5 miles): 2 parks and gardens, 3.1 hectares in all.
Landmarks
The nearest historic landmark is Church of All Saints, a listed building (Grade I), 630 m (0.4 miles) south-east. 24 listed buildings are within 1 km (0.6 miles), 1 of them Grade I and 4 of them Grade II*.
| Name | What it is | From the middle of the street |
|---|---|---|
| Church of All Saints | Listed building, Grade I | 630 m (0.4 miles) south-east |
| All Saints Parish Centre (Former All Saints School) | Listed building, Grade II* | 650 m (0.4 miles) south-east |
| Former All Saints Vicarage | Listed building, Grade II* | 660 m (0.4 miles) south-east |
| All Saints Cottage | Listed building, Grade II* | 660 m (0.4 miles) south-east |
| Name | What it is | From the middle of the street |
|---|---|---|
| Punt Hill | Hill | 240 m south |
| Maidenhead Thicket | Wood | 1.8 km (1.1 miles) west |
| Rushington Copse | Wood | 1.8 km (1.1 miles) south-east |
| Desborough Woods | Wood | 2.1 km (1.3 miles) south-east |
| Moor Cut | Lake or reservoir | 2.1 km (1.3 miles) east |
| Bridge Eyot | Island | 3 km (1.9 miles) east |
Air quality
| Pollutant | Here | UK limit | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 10.0 | 40 | 10 |
| Fine particles (PM2.5) | 7.5 | 20 | 5 |
| Particles (PM10) | 11.4 | 40 | 15 |
All three are within the UK legal limits; PM2.5 is above the WHO guideline, as in most towns and cities.
Road, rail and aircraft noise
| Level | Road traffic | Railways | Aircraft |
|---|---|---|---|
| 55 to 59 | 2 | 0 | 0 |
| Under 55 | 101 | 103 | 103 |
2 of the street's 103 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 Windsor and Maidenhead: see them on the Windsor and Maidenhead page.
Nearest schools
| School | Phase | Ages | Distance | Inspection |
|---|---|---|---|---|
| All Saints Church of England Junior School | Primary | 7–11 | 410 m (0.3 miles) | Report card (Mar 2026): Curriculum and teaching: Expected standard; Achievement: Expected standard; Attendance and behaviour: Expected standard; Personal development and wellbeing: Expected standard; Inclusion: Expected standard; Leadership and governance: Expected standard; Safeguarding standards: Met |
| Boyne Hill CofE Infant and Nursery School Church of England | Primary | 3–7 | 580 m (0.4 miles) | No overall grade (Oct 2024, graded inspection without an overall judgement): Quality of education: Good; Behaviour and attitudes: Good; Personal development: Good; Leadership and management: Good |
| Alwyn Infant School | Primary | 4–7 | 670 m (0.4 miles) | No published inspection |
| Courthouse Junior School | Primary | 7–11 | 710 m (0.4 miles) | Good (Oct 2019, overall grade under the previous framework) |
| Altwood Church of England School | Secondary | 11–18 | 860 m (0.5 miles) | No published inspection |
| St Edmund Campion Catholic Primary School and Nursery Roman Catholic | Primary | 3–11 | 930 m (0.6 miles) | No overall grade (Jun 2025, graded inspection without an overall judgement): Quality of education: Outstanding; Behaviour and attitudes: Outstanding; Personal development: Outstanding; Leadership and management: Outstanding |
| Newlands Girls' School | Secondary | 11–18 | 950 m (0.6 miles) | No published inspection |
| Furze Platt Junior School | Primary | 7–11 | 1.1 km (0.7 miles) | No overall grade (Jul 2025, graded inspection without an overall judgement): Quality of education: Good; Behaviour and attitudes: Outstanding; Personal development: Outstanding; Leadership and management: Good |
| Furze Platt Infant School | Primary | 4–7 | 1.1 km (0.7 miles) | No published inspection |
| Desborough College | Secondary | 11–18 | 1.4 km (0.9 miles) | No published inspection |
| Larchfield Primary and Nursery School | Primary | 3–11 | 1.5 km (0.9 miles) | No published inspection |
| Furze Platt Senior School | Secondary | 11–18 | 1.5 km (0.9 miles) | Report card (Mar 2026): Curriculum and teaching: Expected standard; Achievement: Expected standard; Attendance and behaviour: Expected standard; Personal development and wellbeing: Strong standard; Inclusion: Expected standard; Leadership and governance: Expected standard; Post-16 provision: Expected standard; Safeguarding standards: Met |
Food hygiene ratings nearby
| Business | Type | Distance | Rating | Rated |
|---|---|---|---|---|
| St Marks Food & Wine SL6 6EG | Retailers - other | 100 m | 3 Generally satisfactory | 13 Jul 2021 |
| Lokanta Fish Bar SL6 6EQ | Takeaway/sandwich shop | 140 m | 1 Major improvement necessary | 5 Mar 2026 |
| Pink & Perfect Florists SL6 6DP | Retailers - other | 140 m | Exempt | |
| Kiddies Cabin SL6 6DU | Hospitals/Childcare/Caring Premises | 210 m | 5 Very good | 18 Sep 2026 |
| Courtyard Cafe At St Marks Hospital SL6 6DU | Hospitals/Childcare/Caring Premises | 210 m | 5 Very good | 26 Nov 2025 |
| Maidenhead Food And Wine SL6 6DP | Retailers - other | 210 m | 4 Good | 5 Jul 2021 |
| Clara Court Care Home SL6 6JE | Hospitals/Childcare/Caring Premises | 210 m | 4 Good | 26 Mar 2026 |
| Saints Cafe SL6 6DP | Restaurant/Cafe/Canteen | 220 m | 5 Very good | 25 Mar 2024 |
| St Marks Local SL6 5DA | Retailers - other | 250 m | 4 Good | 3 Dec 2025 |
| Dementia Day Centre AT Boyn Grove Community Resource Centre SL6 6JE | Restaurant/Cafe/Canteen | 260 m | 5 Very good | 20 Feb 2020 |
| The Fashion Cafe SL6 6JE | Restaurant/Cafe/Canteen | 260 m | 5 Very good | 9 Jun 2023 |
| St Marks Care Home SL6 6DN | Hospitals/Childcare/Caring Premises | 270 m | 5 Very good | 13 Jul 2026 |
| Active Health Clinics SL6 6DW | Retailers - other | 340 m | Exempt | |
| Big Dog Bakery SL6 6DW | Other catering premises | 350 m | 5 Very good | 3 Feb 2022 |
| Pyala Kebab Roll SL6 5BN | Mobile caterer | 350 m | Awaiting inspection |
Crime within 250 m
| Category | Crimes |
|---|---|
| Violence and sexual offences | 25 |
| Criminal damage and arson | 6 |
| Public order | 4 |
| Other theft | 3 |
| Vehicle crime | 3 |
| Anti-social behaviour | 2 |
| Drugs | 2 |
| Other crime | 1 |
| Burglary | 1 |
Most of these are attached to: On or near Cope Court (16); On or near Portlock Road (10); On or near Stonefield Park (9); On or near Powney Road (3); On or near Parking Area (2).
People and work
Who lives here
| Around this street | England | |
|---|---|---|
| Median age | 40 | 40 |
| Children under 15 | 17% | 17% |
| Aged 65 and over | 13% | 18% |
Homes
| Around this street | England | |
|---|---|---|
| Owned (outright or with a mortgage) | 56% | 61% |
| Owned outright | 18% | 33% |
| Shared ownership | 4% | 1% |
| Social rented | 12% | 17% |
| Private rented | 29% | 21% |
Work and commuting
| Around this street | England | |
|---|---|---|
| Adults (16 and over) in work | 69% | 57% |
| Unemployment (of those working or looking for work) | 5% | 6% |
| Retired (of adults) | 15% | 22% |
| Long-term sick or disabled (of adults) | 2% | 4% |
| Work mainly from home (of those in work) | 49% | 32% |
| Travel to work by car or van | 38% | 48% |
| By train, Underground, metro or tram | 4% | 4% |
| By any public transport, including bus | 4% | 8% |
| On foot or by bicycle | 8% | 10% |
| Work within 10 km (6 miles) of home (of those who travel to work) | 63% | 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) | 50% | 34% |
| No qualifications | 11% | 18% |
| Apprenticeship as highest qualification | 3% | 5% |
| Main language English (aged 3 and over) | 92% | 91% |
| Cannot speak English well or at all | 2% | 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
- Roadworks Street works permit: SCOTTISH AND SOUTHERN POWER DISTRIBUTION (SSEPD): Utility repair and maintenance works, 20 October 2026 to 26 October 2026 (give and take) found 3 November 2026
- Roadworks Street works permit: ROYAL BOROUGH OF WINDSOR AND MAIDENHEAD: Highway improvement works, 6 November 2026 (some carriageway incursion) found 3 November 2026
- Food hygiene ratings All Saints Home Club At All Saints CE Junior School (school/college/university, SL6 4AR) is no longer listed; it was rated 3 Generally satisfactory found 3 November 2026
- Food hygiene ratings Cater Link At All Saints CE Junior School (school/college/university, SL6 4AR) is no longer listed; it was rated 5 Very good found 3 November 2026
Postcodes on this street
Nearby streets
The Wickets · Powney Road · Cope Court · Godayn Grove · Courtfield Drive · Orchard Grove · Bath Court · Penyston Road · Stonefield Park · Corfe Place · Havelock Road · Baldwins Place
All the streets in SL6 and across Windsor and Maidenhead.
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.