Delphinium Close Birmingham
11 addresses across 1 postcode (B9), about 50 m long, classed as a local road. USRN 2705943.
- Prices and rents: A typical home in Birmingham cost £234,867 in August 2026 (+1.5% on a year); private rents averaged £1,106 a month.
- Energy: 10 homes have an energy certificate (C: 10).
- 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: 2 storm overflows within 1 km (0.6 miles) spilled 15 times (22 hours) in 2025.
- Energy projects: 2 renewable energy projects nearby are planned or being built; the nearest, Hay Hall Road Energy Recovery Facility, is 3.1 km (1.9 miles) away.
- Council tax: Most homes around it are in council tax band A; Band D in Birmingham costs £2,363 a year in 2026-27.
- Broadband: Gigabit broadband is available to 100% of premises.
- Transport: The nearest railway station is Adderley Park, about 920 m (0.6 miles) away in a straight line.
- Green space: The nearest park or garden is about 540 m (0.3 miles) away.
- Air: Background air pollution in 2024 was 16.3 µg/m³ of nitrogen dioxide and 8.2 of PM2.5, within UK legal limits.
- Height: Its addresses are 109 to 110 m above sea level.
- Noise: 2 of its 11 addresses are modelled at 55 dB or more from road traffic.
- Doctors: The nearest GP surgery is Oakleaf, about 640 m (0.4 miles) away, with 17 practices within 1.6 km (1 mile).
- People: About 390 people lived in the census areas around it in 2021; 52% of households owned their home and 20% of adults held a degree or other higher qualification.
- Crime: 122 crimes were recorded within 250 m between September 2025 and August 2026, most often violence and sexual offences.
- Road safety: No collisions in which someone was hurt were reported on and around it in 2021 to 2025.
£9.99 The Street Dossier Full Report for a home on Delphinium Close: its own records, questions to ask the seller and everything on this page, in one PDF. Choose the home
House sales on this street
No sales recorded on this street since January 1995 under this street name.
House prices and rents in Birmingham
A typical home in Birmingham cost £234,867 in August 2026, 1.5% more than a year before. That is 13% more than five years earlier and 47% more than ten years earlier.
| Home | Typical price, Aug 2026 |
|---|---|
| Detached | £444,169 |
| Semi-detached | £276,268 |
| Terraced | £223,462 |
| Flat or maisonette | £143,861 |
| Bought by a first-time buyer | £212,774 |
Private renters in Birmingham paid £1,106 a month on average in September 2026, 3.3% more than a year before. That is 36% more than five years earlier.
| Home | Average rent a month, Sep 2026 |
|---|---|
| One bedroom | £834 |
| Two bedrooms | £1,009 |
| Three bedrooms | £1,141 |
| Four or more bedrooms | £1,587 |
Energy performance certificates
10 homes with a current certificate; median floor area 99 m². Most common: House, semi-detached (10). Built: 1991-1995 (5); 1996-2002 (5). Tenure at assessment: rented (social) (10).
Each home's certificates and sales (10 addresses)
Gas and electricity use
Homes with gas used 10,868 kWh of it on average in 2024, 17% less than the district's 13,140 kWh, and 2,546 kWh of electricity, 18% less than the district's 3,095 kWh. 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 B9.
Council tax
What each band costs in Birmingham in 2026-27: Band D £2,363 a year on average, including the police, fire and any county and parish charges.
| A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|
| £1,575 | £1,838 | £2,100 | £2,363 | £2,888 | £3,413 | £3,938 | £4,726 |
Homes by band in the neighbourhood around this street: most are in band A (54% of about 480 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): CITY WIDE HMO.
- Tree preservation orders: in a protected area: THE BIRMINGHAM ( BORDESLEY GREEN LEISURE GARDENS SITE A & B, BORDESLEY GREEN / WHITACRE ROAD, SMALL HEATH) TPO 1994.
- Green belt: no.
Brownfield land registered for housing within 1 km (0.6 miles)
- Parkfield/Anthony Road: up to 54 homes, not permissioned (320 m)
- Land adjacent 65 Couchman Road: up to 1 home, permissioned (400 m (0.2 miles))
- 47-51 Jephcott Road: up to 1 home, permissioned (400 m (0.2 miles))
- Cherrywood Road: up to 2 homes, not permissioned (440 m (0.3 miles))
- Oak Tree Kitchens, 313 Alum Rock Road, Birmingham, B8 3BJ: up to 2 homes, permissioned (530 m (0.3 miles))
- Cherrywood Road: up to 9 homes, not permissioned (530 m (0.3 miles))
- The Brookhill Tavern, 484 Alum Rock Road, Alum Rock, Birmingham, B8 3HX: up to 5 homes, permissioned (590 m (0.4 miles))
- 18 Sutton Approach, Birmingham: up to 3 homes, permissioned (600 m (0.4 miles))
Energy projects nearby
4 energy projects near the street's postcodes, 2 of them not yet operating.
| Project | Kind | Size | Stage | Distance |
|---|---|---|---|---|
| Birmingham Bio-Power Plant Birmingham 2012/05481/PA | Advanced Conversion Technologies | 10.3 MW | Operational Jun 2016 | 2.3 km (1.4 miles) |
| Tyseley ERF | Energy from waste (incinerator) | 30 MW | Operational Sep 1996 | 2.7 km (1.7 miles) |
| Hay Hall Road Energy Recovery Facility Birmingham 2018/09425/PA | Advanced Conversion Technologies | 25 MW | Permission granted, not yet built May 2019 | 3.1 km (1.9 miles) |
| Fort Industrial Park (Castle Bromwich) Birmingham 2015/09679/PA | Advanced Conversion Technologies | 10.2 MW | Permission granted, not yet built Jun 2016 | 4.2 km (2.6 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
- 26 August 2026: SEVERN TRENT WATER, Utility repair and maintenance works, no carriageway incursion, on the footway (minor works)
Flood risk
No address in this street's postcodes is in an area at high, medium or low risk of flooding from rivers, the sea or surface water. The rest are in areas at very low risk: less than a 0.1% (1 in 1,000) chance a year.
Rivers and the sea alone: no home is in an area at risk.
High: 3.3% (1 in 30) or more chance of flooding a year. Medium: 1% to 3.3%. Low: 0.1% to 1%. Very low: under 0.1%. The rivers and sea figures allow for flood defences. Counts cover whole postcodes, which can include other streets.
Flood zone for planning: no postcode centre is in flood zone 2 or 3.
Recorded floods
No recorded flood covers the centre of this street's postcodes.
Recorded floods are where floodwater was seen or surveyed after a flood. Many floods were never mapped, an outline over a postcode's centre does not mean every home in it flooded, and homes outside one may have. Ask the seller whether the home itself has flooded.
Coastal erosion
No projected coastal erosion zone is within 1 km (0.6 miles) of the street's postcodes.
Storm overflows
2 storm overflows within 1 km (0.6 miles) of the street's postcodes spilled 15 times, for 22 hours in all, in 2025. They discharge into Trib of River Tame, Tributary of River Tame.
| Overflow | Into | Spills | Hours | Distance |
|---|---|---|---|---|
| Fordrough Lane Cso Severn Trent Water | Trib of River Tame | 10 | 21 | 150 m |
| Foxton Road-Ward End Park Road Cso Severn Trent Water | Tributary of River Tame | 5 | 2 | 860 m (0.5 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 in the lowest band of radon potential: fewer than 1 home in 100 is estimated to be at or above the Action Level. It is not a radon Affected Area.
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 11 addresses are between 109 m and 110 m above sea level (110 m on average).
Broadband
| Postcode | Superfast (30 Mbit/s+) | Ultrafast (300 Mbit/s+) | Gigabit | Below 10 Mbit/s |
|---|---|---|---|---|
| B9 5HP | 100% | 100% | 100% | 0% |
Getting around
| Nearest | Distance | |
|---|---|---|
| Railway stations | Adderley Park 147,000 journeys in 2024–25 | 920 m (0.6 miles) |
| Duddeston 341,000 journeys in 2024–25 | 2 km (1.3 miles) | |
| Stechford 417,000 journeys in 2024–25 | 2.1 km (1.3 miles) | |
| Bus stops | 0 stops within 400 m (0.2 miles), 26 within 800 m (0.5 miles); nearest Brookhill Road Alum Rock | 490 m (0.3 miles) |
| Bus or coach station | Birmingham Coach Station Digbeth | 3.2 km (2 miles) |
| Car parks | I Can Park And Ride | 2.2 km (1.3 miles) |
| EV charging points | 22 within 1.6 km (1 mile); nearest ubitricity | 440 m (0.3 miles) |
| Airport with scheduled flights | Birmingham Airport BHX | 7.2 km (4.5 miles) |
Local services
| Nearest | Distance | |
|---|---|---|
| GP surgeries | 17 practices within 1.6 km (1 mile); nearest Oakleaf Good Jan 2017 | 640 m (0.4 miles) |
| Pharmacies | 21 pharmacies within 1.6 km (1 mile); nearest Sultania Healthcare | 550 m (0.3 miles) |
| NHS dentists | 6 practices within 1.6 km (1 mile); nearest Dental Surgery | 530 m (0.3 miles) |
| Hospital | Heartlands Hospital | 910 m (0.6 miles) |
| Care homes | 5 homes within 1.6 km (1 mile); nearest Herondale Kingfisher Good Jan 2020 | 880 m (0.5 miles) |
| Police station | Rose Road Police Station | 2.2 km (1.4 miles) |
| Cash machines | 4 machines within 800 m (0.5 miles); nearest Payzone | 490 m (0.3 miles) |
Parks and green space
| Nearest | Distance | |
|---|---|---|
| Park or garden | 1 within 800 m (0.5 miles); nearest Unnamed 8,890 m² | 540 m (0.3 miles) |
| Play area | 7 within 800 m (0.5 miles); nearest The Pod 1,410 m² | 80 m |
| Playing field | 1 within 800 m (0.5 miles); nearest Unnamed 7,220 m² | 540 m (0.3 miles) |
| Allotments | 1 within 800 m (0.5 miles); nearest Bordesley Green Allotments and New Shoots 11 ha | 490 m (0.3 miles) |
Within 800 m (0.5 miles): 1 park or garden, 0.9 hectares in all.
Landmarks
7 listed buildings are within 1 km (0.6 miles).
| Name | What it is | From the middle of the street |
|---|---|---|
| Kent's Moat | Lake or reservoir | 3.8 km (2.3 miles) east |
| Brookvale Park | Lake or reservoir | 4.3 km (2.7 miles) north |
Air quality
| Pollutant | Here | UK limit | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 16.3 | 40 | 10 |
| Fine particles (PM2.5) | 8.2 | 20 | 5 |
| Particles (PM10) | 12.8 | 40 | 15 |
All three are within the UK legal limits; nitrogen dioxide and PM2.5 are 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 | 9 | 11 | 11 |
2 of the street's 11 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 Birmingham: see them on the Birmingham page.
Nearest schools
| School | Phase | Ages | Distance | Inspection | Exam results |
|---|---|---|---|---|---|
| Eden Boys' Leadership Academy, Birmingham East Muslim | Secondary | 11–18 | 450 m (0.3 miles) | Outstanding (Jan 2023, overall grade under the previous framework) | GCSE 2026 (provisional): Attainment 8 56.2 (60.8 in 2025 and 58.9 in 2024); 73.3% grade 5+ in English and maths |
| Shaw Hill Primary School | Primary | 3–11 | 480 m (0.3 miles) | No published inspection | 70% at the expected standard in reading, writing and maths, 13% at the higher standard (2025; 70% in 2024 and 70% in 2023) |
| Parkfield Community School | Primary | 3–11 | 530 m (0.3 miles) | Outstanding (Oct 2023, overall grade under the previous framework) | 72% at the expected standard in reading, writing and maths, 7% at the higher standard (2025; 55% in 2024 and 66% in 2023) |
| Bordesley Green Primary School | Primary | 3–11 | 580 m (0.4 miles) | Good (Mar 2023, overall grade under the previous framework) | 46% at the expected standard in reading, writing and maths, 0% at the higher standard (2025; 44% in 2024 and 36% in 2023) |
| The Rosary Catholic Primary School Roman Catholic | Primary | 3–11 | 600 m (0.4 miles) | Good (Mar 2024, overall grade under the previous framework) | 49% at the expected standard in reading, writing and maths, 7% at the higher standard (2025; 61% in 2024 and 53% in 2023) |
| Saltley Academy | Secondary | 11–16 | 710 m (0.4 miles) | No published inspection | GCSE 2026 (provisional): Attainment 8 39.8 (39.4 in 2025 and 42.4 in 2024); 32.1% grade 5+ in English and maths |
| Alston Primary School | Primary | 3–11 | 800 m (0.5 miles) | No published inspection | 59% at the expected standard in reading, writing and maths, 6% at the higher standard (2025; 50% in 2024 and 58% in 2023) |
| Bordesley Green Girls' School & Sixth Form | Secondary | 11–18 | 850 m (0.5 miles) | Good (Apr 2022, overall grade under the previous framework) | GCSE 2026 (provisional): Attainment 8 51.3 (49.8 in 2025 and 48.6 in 2024); 53.7% grade 5+ in English and maths A level 2025: average grade C-; 5.4% AAB or better; progress below average |
| Waverley Studio College | Secondary | 14–19 | 880 m (0.5 miles) | No published inspection | GCSE 2026 (provisional): Attainment 8 16.6 (21.9 in 2025 and 26.4 in 2024); 7.4% grade 5+ in English and maths |
| Rockwood Academy | Secondary | 11–16 | 880 m (0.5 miles) | No published inspection | GCSE 2026 (provisional): Attainment 8 40.1 (39.1 in 2025 and 36.6 in 2024); 29.1% grade 5+ in English and maths |
| Nansen Primary School | Primary | 3–11 | 880 m (0.5 miles) | Report card (May 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; Early years: Expected standard; Safeguarding standards: Met | 61% at the expected standard in reading, writing and maths, 3% at the higher standard (2025; 76% in 2024 and 67% in 2023) |
| Marlborough Primary School | Primary | 3–11 | 1.1 km (0.7 miles) | Good (May 2023, overall grade under the previous framework) | 35% at the expected standard in reading, writing and maths, 0% at the higher standard (2025; 40% in 2024 and 44% 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
The ten nearest nurseries, pre-schools and clubs are all within 1 km (0.6 miles); the nearest is 550 m (0.3 miles) from the middle of the street.
| Provider | Kind | Places | Latest inspection | Distance |
|---|---|---|---|---|
| Laugh N Learn Day Nursery B8 3HX | Full day care | 40 | Requires improvement (Sep 2025, overall grade under the previous framework) | 550 m (0.3 miles) |
| Booster Learning B8 3BL | Sessional day care (over fives) | Not inspected yet | 570 m (0.4 miles) | |
| Hamd House Nursery - Bordesley Green B9 5PQ | Sessional day care | 420 | Outstanding (Sep 2022, overall grade under the previous framework) | 590 m (0.4 miles) |
| Blenducate Learning Centre B8 3TE | Full day care (over fives) | Not inspected yet | 610 m (0.4 miles) | |
| The Village Community Nursery B8 3TE | Full day care | 50 | Good (Sep 2021, overall grade under the previous framework) | 610 m (0.4 miles) |
| Little Gems Nursery ltd B8 3TE | Full day care | 47 | Not inspected yet | 610 m (0.4 miles) |
| Supernova Nursery and Early Years Learning B9 4UU | Full day care | 47 | Not inspected yet | 640 m (0.4 miles) |
| Al-Madina Nursery - Saltley B8 3PP | Sessional day care | 60 | Good (Jan 2025, overall grade under the previous framework) | 930 m (0.6 miles) |
| Cubs Corner Ltd B8 3RZ | Full day care | 52 | Not inspected yet | 1 km (0.6 miles) |
| Honeybees Day Care B9 5QJ | Full day care | 24 | Good (Jun 2024, overall grade under the previous framework) | 1 km (0.6 miles) |
Ofsted also registers 319 childminders and 119 home childcarers (nannies) in Birmingham. 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 |
|---|---|---|---|---|
| MealMotion B9 5FN | Other catering premises | 260 m | Awaiting inspection | |
| Mahmood Food Store B8 3BS | Retailers - other | 270 m | 5 Very good | 22 Sep 2009 |
| SBC Sure Start Nursery B8 3AA | Hospitals/Childcare/Caring Premises | 360 m | 5 Very good | 6 Feb 2012 |
| Anthony Road Childrens Centre B8 3AA | Hospitals/Childcare/Caring Premises | 370 m | 5 Very good | 17 Mar 2025 |
| Ukim Jamia Mosque Birmingham B8 3BY | Restaurant/Cafe/Canteen | 390 m | 5 Very good | 4 Mar 2011 |
| Fresh munch B9 5LW | Other catering premises | 420 m (0.3 miles) | Awaiting inspection | |
| SC.TheCakeLabel B8 3SR | Other catering premises | 480 m (0.3 miles) | Awaiting inspection | |
| Parkfield Community School B8 3AX | School/college/university | 480 m (0.3 miles) | 4 Good | 22 Sep 2025 |
| Juice Bar B8 3EA | Restaurant/Cafe/Canteen | 480 m (0.3 miles) | 5 Very good | 21 May 2025 |
| Bordesley Green Day Centre B9 5LY | Hospitals/Childcare/Caring Premises | 480 m (0.3 miles) | 4 Good | 2 Sep 2011 |
| Cygnet Cedars B9 5LY | Hospitals/Childcare/Caring Premises | 490 m (0.3 miles) | 5 Very good | 21 Oct 2025 |
| Knk Superstore B8 3EA | Retailers - other | 490 m (0.3 miles) | 5 Very good | 20 Feb 2017 |
| Roti Wala Dera Ltd B8 3EA | Restaurant/Cafe/Canteen | 490 m (0.3 miles) | 3 Generally satisfactory | 18 Nov 2025 |
| Shawhill Primary School B8 3AN | School/college/university | 490 m (0.3 miles) | 5 Very good | 24 Oct 2023 |
| Eden Boys Leadership Academy East B8 3DT | School/college/university | 490 m (0.3 miles) | 5 Very good | 25 Feb 2026 |
Crime within 250 m
| Category | Crimes |
|---|---|
| Violence and sexual offences | 72 |
| Criminal damage and arson | 17 |
| Vehicle crime | 10 |
| Burglary | 5 |
| Public order | 5 |
| Other theft | 4 |
| Possession of weapons | 3 |
| Drugs | 2 |
| Other crime | 2 |
| Robbery | 1 |
| Anti-social behaviour | 1 |
Most of these are attached to: On or near Lupin Grove (43); On or near Hancock Road (34); On or near Bell Drive (14); On or near Underhill Road (10); On or near Woodlands Road (10).
Road safety
No collisions in which someone was hurt were reported on and around the street in 2021 to 2025.
Only collisions in which someone was hurt and which the police were told about are here: damage-only collisions and near misses are not, and some injuries are never reported. Positions are recorded by the police, usually to within a few metres. Each year's figures are published the following September.
Traffic on nearby roads
No traffic count point is within 500 m (0.3 miles) of the street's postcodes. The Department for Transport counts every motorway and A road and only a sample of minor roads, so a quiet residential street usually has none.
People and work
Who lives here
| Around this street | England | |
|---|---|---|
| Median age | 26 | 40 |
| Children under 15 | 31% | 17% |
| Aged 65 and over | 7% | 18% |
Homes
| Around this street | England | |
|---|---|---|
| Owned (outright or with a mortgage) | 52% | 61% |
| Owned outright | 27% | 33% |
| Shared ownership | 7% | 1% |
| Social rented | 19% | 17% |
| Private rented | 23% | 21% |
Work and commuting
| Around this street | England | |
|---|---|---|
| Adults (16 and over) in work | 40% | 57% |
| Unemployment (of those working or looking for work) | 16% | 6% |
| Retired (of adults) | 6% | 22% |
| Long-term sick or disabled (of adults) | 6% | 4% |
| Work mainly from home (of those in work) | 18% | 32% |
| Travel to work by car or van | 59% | 48% |
| By train, Underground, metro or tram | under 1% | 4% |
| By any public transport, including bus | 8% | 8% |
| On foot or by bicycle | 11% | 10% |
| Work within 10 km (6 miles) of home (of those who travel to work) | 80% | 65% |
| Work 30 km (19 miles) or more away | 2% | 8% |
Education and languages
| Around this street | England | |
|---|---|---|
| Degree or other higher qualification, Level 4+ (of adults) | 20% | 34% |
| No qualifications | 30% | 18% |
| Apprenticeship as highest qualification | 1% | 5% |
| Main language English (aged 3 and over) | 75% | 91% |
| Cannot speak English well or at all | 8% | 2% |
Deprivation
The neighbourhood around this street is in decile 1 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
- B9 5HP: 11 addresses
Nearby streets
Lupin Grove · Geranium Grove · Underhill Road · Maybank · Woodlands Road · Hancock Road · Alexander Way · Springbank · Bell Drive · Colonial Road · Poppy Grove · Ludlow Road
All the streets in B9 and across Birmingham.
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.