Hampstead Road Nottingham

29 addresses across 2 postcodes (NG3), about 100 m long, classed as a local road. USRN 29014867.

  • Sales: 67 recorded sales since 1995; in 2025 the median was £227,000 across 4 sales.
  • Energy: 24 homes have an energy certificate (C: 4, D: 9, E: 10, F: 1).
  • Flood: No address on its postcodes is in an area at high or medium risk of flooding from rivers, the sea or surface water.
  • Council tax: Most homes around it are in council tax band A; Band D in Nottingham costs £2,755 a year in 2026-27.
  • Broadband: Gigabit broadband is available to 100% of premises.
  • Transport: The nearest railway station is Nottingham, about 3.2 km (2 miles) away in a straight line.
  • Green space: The nearest park or garden is about 550 m (0.3 miles) away.
  • Air: Background air pollution in 2024 was 12.7 µg/m³ of nitrogen dioxide and 7.6 of PM2.5, within UK legal limits.
  • Height: Its addresses are 120 to 123 m above sea level.
  • Noise: 1 of its 29 addresses is modelled at 55 dB or more from road traffic.
  • Doctors: The nearest GP surgery is Welbeck Surgery, about 930 m (0.6 miles) away, with 4 practices within 1.6 km (1 mile).
  • People: About 570 people lived in the census areas around it in 2021; 60% of households owned their home and 45% of adults held a degree or other higher qualification.
  • Crime: 125 crimes were recorded within 250 m between September 2025 and August 2026, most often violence and sexual offences.

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
20254£227,000£204,000£269,000
20241£150,000£150,000£150,000
20234£216,250£106,184£246,332
20224£222,750£200,500£260,000
20211£215,000£215,000£215,000
20202£177,500£145,000£210,000
20182£175,250£163,000£187,500
20173£143,000£133,000£155,500
20164£147,500£128,000£158,000
20152£135,500£135,000£136,000
20132£116,725£93,500£139,950
20121£125,000£125,000£125,000
Most recent sales (latest 50 of 67)
DateAddressTypePriceNotes
31 Oct 202511 NG3 5HDTerraced£220,000
1 Aug 202514 NG3 5HDSemi-detached£269,000
21 Feb 202519 NG3 5HDTerraced£204,000
24 Jan 20259 NG3 5HDTerraced£234,000
22 Nov 20248 NG3 5HDTerraced£150,000
5 Jul 20234 NG3 5HDTerraced£246,332
12 May 20232 NG3 5HDTerraced£207,500
5 May 202315 NG3 5HDTerraced£106,184
3 Apr 202323 NG3 5HDTerraced£225,000
18 Nov 202220 NG3 5HDTerraced£260,000
31 Oct 202221 NG3 5HDTerraced£208,000
17 May 202210 NG3 5HDTerraced£237,500
11 Mar 202219 NG3 5HDTerraced£200,500
9 Apr 202118 NG3 5HDTerraced£215,000
2 Oct 202011 NG3 5HDTerraced£145,000
4 Sep 202020 NG3 5HDTerraced£210,000
6 Sep 201920 NG3 5HDTerraced£110,000Not a standard sale (repossession, buy-to-let or transfer).
31 Jul 201823 NG3 5HDTerraced£163,000
12 Apr 201818 NG3 5HDTerraced£187,500
19 May 201721 NG3 5HDTerraced£133,000
10 Feb 201712 NG3 5HDTerraced£155,500
18 Jan 201723 NG3 5HDTerraced£143,000
22 Jul 20167 NG3 5HDTerraced£155,000
13 May 201627 NG3 5HDTerraced£158,000
3 May 20163 NG3 5HDTerraced£140,000
9 Feb 201617 NG3 5HDTerraced£128,000
29 May 201518 NG3 5HDTerraced£136,000
13 Feb 201513 NG3 5HDTerraced£135,000
15 Aug 20135 NG3 5HDTerraced£139,950
22 Jul 201313 NG3 5HDTerraced£93,500
5 Oct 201214 NG3 5HDSemi-detached£125,000
20 Aug 20097 NG3 5HDSemi-detached£123,500
26 Jun 200912 NG3 5HDTerraced£117,500
6 Mar 200919 NG3 5HDTerraced£125,000
18 Apr 200822 NG3 5HDTerraced£125,000
3 Jan 200823 NG3 5HDTerraced£111,750
25 Oct 200718 NG3 5HDSemi-detached£124,995
20 Sep 200714 NG3 5HDSemi-detached£125,000
22 Jun 200727 NG3 5HDSemi-detached£138,500
16 Jun 200615 NG3 5HDTerraced£125,000
25 May 200617 NG3 5HDTerraced£112,000
9 Dec 200522 NG3 5HDTerraced£127,000
18 Nov 20055 NG3 5HDTerraced£117,500
29 Jul 200521 NG3 5HDTerraced£119,950
16 Jul 200424 NG3 5HDTerraced£125,000
28 May 20043 NG3 5HDSemi-detached£139,950
24 Jan 200310 NG3 5HDTerraced£123,000
25 Oct 20027 NG3 5HDSemi-detached£128,000
2 Aug 20025 NG3 5HDTerraced£92,500
24 May 200215 NG3 5HDTerraced£78,000

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 February 2009 and some homes have none. Address data © Ordnance Survey and Royal Mail, shown for understanding the energy efficiency of buildings only.

24 homes with a current certificate; median floor area 87 m². Most common: House, mid-terrace (16); House, end-terrace (7); House, detached (1). Built: 1900-1929 (14); before 1900 (8); Pre-1900 (1). Tenure at assessment: owner-occupied (13); rented (private) (9).

Each home's certificates and sales (10 addresses)

Council tax

What each band costs in Nottingham in 2026-27: Band D £2,755 a year on average, including the police, fire and any county and parish charges.

ABCDEFGH
£1,837£2,143£2,449£2,755£3,368£3,980£4,592£5,511

Homes by band in the neighbourhood around this street: most are in band A (51% of about 830 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: 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)

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

No street works under way, planned or finished in the last three months on this street, in permits up to 31 October 2026.

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

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 on this street is in flood zone 2 or 3.

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 29 addresses are between 120 m and 123 m above sea level (121 m on average).

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
NG3 5HB100%100%100%0%
NG3 5HD100%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 stationsNottingham 8.1 million journeys in 2024–253.2 km (2 miles)
Carlton 53,000 journeys in 2024–254 km (2.5 miles)
Netherfield 10,000 journeys in 2024–254.1 km (2.5 miles)
Bus stops9 stops within 400 m (0.2 miles), 40 within 800 m (0.5 miles); nearest Malvern Road Mapperley Park90 m
Bus or coach stationVictoria Bus Station Nottingham2 km (1.2 miles)
Car parksCity Walls Road Parking830 m (0.5 miles)
EV charging points4 within 1.6 km (1 mile); nearest bp Pulse840 m (0.5 miles)
Airport with scheduled flightsEast Midlands Airport EMA20.6 km (13 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 surgeries4 practices within 1.6 km (1 mile); nearest Welbeck Surgery930 m (0.6 miles)
Pharmacies10 pharmacies within 1.6 km (1 mile); nearest Sherwood Late Night Pharmacy910 m (0.6 miles)
NHS dentists7 practices within 1.6 km (1 mile); nearest Dental Surgery220 m
HospitalNottingham Woodthorpe Hospital (Nuh)1.7 km (1.1 miles)
Police stationArnold Police Station1.4 km (0.9 miles)
Cash machinesP & D Stores, Mapperly910 m (0.6 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 garden2 within 800 m (0.5 miles); nearest Unnamed 1,750 m²550 m (0.3 miles)
Largest park within 800 m (0.5 miles)Unnamed 2.1 ha620 m (0.4 miles)
Play area4 within 800 m (0.5 miles); nearest Unnamed 210 m²250 m
Playing field2 within 800 m (0.5 miles); nearest Coppice Recreation Ground 5.9 ha150 m
Allotments3 within 800 m (0.5 miles); nearest Stonepit Coppice Gardens 7.0 ha560 m (0.3 miles)

Within 800 m (0.5 miles): 2 parks and gardens, 2.2 hectares in all.

Landmarks

The nearest historic landmark is Hunger Hill Gardens, Stonepit Coppice Gardens and Gorseyclose Gardens, a registered park or garden (Grade II*), 700 m (0.4 miles) south. 15 listed buildings are within 1 km (0.6 miles).

Historic places
NameWhat it isFrom the middle of the street
Hunger Hill Gardens, Stonepit Coppice Gardens and Gorseyclose GardensRegistered park or garden, Grade II*700 m (0.4 miles) south
Bagthorpe GardensRegistered park or garden, Grade II*1.3 km (0.8 miles) west
Natural landmarks within 5 km (3.1 miles)
NameWhat it isFrom the middle of the street
MapperleyHill1 km (0.6 miles) north-east
Black WoodWood1.9 km (1.2 miles) north-west
Sunrise HillHill2.8 km (1.7 miles) north-west
Roughhill WoodWood2.9 km (1.8 miles) south-east
Colwick WoodWood3 km (1.9 miles) south-east
Holme CutLake or reservoir4.5 km (2.8 miles) south-east

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)12.74010
Fine particles (PM2.5)7.6205
Particles (PM10)11.84015

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 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 6910
Under 552829

1 of the street's 29 addresses is modelled at 55 dB or more from road traffic, above the WHO guidelines.

Climate, daylight and earthquakes

Monthly temperatures and rainfall, sunrise and sunset through the year, and earthquakes recorded nearby since 1970 are much the same across the area, so they are worked out once for Nottingham: see them on the Nottingham 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
The Wells AcademySecondary11–16450 m (0.3 miles) Report card (Jan 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
Walter Halls Primary and Early Years SchoolPrimary3–11590 m (0.4 miles) No published inspection
St Augustine's Catholic Primary and Nursery School, A Voluntary Academy Roman CatholicPrimary3–111 km (0.6 miles) Good (Jan 2024, overall grade under the previous framework)
Haydn Primary SchoolPrimary3–111 km (0.6 miles) No overall grade (Dec 2024, graded inspection without an overall judgement): Quality of education: Good; Behaviour and attitudes: Outstanding; Personal development: Outstanding; Leadership and management: Good
St Ann's Well AcademyPrimary3–111.1 km (0.7 miles) No published inspection
Porchester Junior SchoolPrimary7–111.3 km (0.8 miles) Report card (Apr 2026): Curriculum and teaching: Strong standard; Achievement: Strong standard; Attendance and behaviour: Strong standard; Personal development and wellbeing: Strong standard; Inclusion: Strong standard; Leadership and governance: Strong standard; Safeguarding standards: Met
Carrington Primary and Nursery SchoolPrimary3–111.4 km (0.9 miles) Good (Jun 2024, overall grade under the previous framework)
Bluecoat Trent AcademySecondary11–161.4 km (0.9 miles) Good (Jan 2024, overall grade under the previous framework)
Sycamore AcademyPrimary2–111.4 km (0.9 miles) No published inspection
Seely Primary SchoolPrimary3–111.5 km (0.9 miles) No published inspection
Our Lady & St Edward Primary & Nursery Catholic Voluntary Academy Roman CatholicPrimary3–111.5 km (0.9 miles) Good (May 2024, overall grade under the previous framework)
Claremont Primary and Nursery SchoolPrimary3–111.5 km (1 mile) Good (Dec 2022, 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.

BusinessTypeDistanceRatingRated
Sainsbury's Local NG3 5HJRetailers - supermarkets/hypermarkets120 m5 Very good25 Nov 2025
Grace Legacy Centre CIC NG3 5HEHospitals/Childcare/Caring Premises140 m5 Very good12 Aug 2025
St Judes NG3 5GXOther catering premises150 m5 Very good26 Feb 2026
Hughendon Lodge NG3 5NGHospitals/Childcare/Caring Premises190 m5 Very good17 May 2026
The Wells Academy NG3 5LRSchool/college/university200 m5 Very good21 May 2026
Duke of Cambridge NG3 5FHPub/bar/nightclub340 m2 Improvement necessary27 May 2026
Espresso Gallery NG3 5FHRestaurant/Cafe/Canteen340 m4 Good11 Dec 2025
Mapperley Fryer NG3 5FHTakeaway/sandwich shop340 m5 Very good11 Aug 2026
Gurkha Chilli NG3 5FHTakeaway/sandwich shop340 mAwaiting inspection
Edenhurst NG3 4JGHospitals/Childcare/Caring Premises360 m5 Very good29 May 2025
OC Afrocaribbean Place NG3 5FHRetailers - other440 m (0.3 miles)5 Very good16 Jul 2025
Portland College Woodborough Road Campus Portland Charity NG3 4JFSchool/college/university480 m (0.3 miles)5 Very good25 Mar 2026
Walter Halls Primary School NG3 5HSSchool/college/university490 m (0.3 miles)5 Very good18 Mar 2026

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.

125 recorded crimes by category
CategoryCrimes
Violence and sexual offences56
Criminal damage and arson14
Anti-social behaviour11
Other theft8
Drugs8
Other crime8
Vehicle crime5
Public order5
Burglary4
Shoplifting2
Robbery2
Bicycle theft1
Theft from the person1

Most of these are attached to: On or near Corby Road (62); On or near Caunton Avenue (32); On or near Thyra Court (12); On or near Theatre/Concert Hall (5); On or near Thyra Grove (4).

People and work

Source: ONS Census 2021, taken on 21 March 2021, for the 2 Output Areas (small census areas of about 125 households each) that this street's postcodes are in: 572 residents in 243 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 age3640
Children under 1519%17%
Aged 65 and over11%18%

Homes

Around this streetEngland
Owned (outright or with a mortgage)60%61%
Owned outright23%33%
Shared ownershipunder 1%1%
Social rented10%17%
Private rented30%21%

Work and commuting

Around this streetEngland
Adults (16 and over) in work64%57%
Unemployment (of those working or looking for work)9%6%
Retired (of adults)13%22%
Long-term sick or disabled (of adults)3%4%
Work mainly from home (of those in work)45%32%
Travel to work by car or van35%48%
By train, Underground, metro or tram0%4%
By any public transport, including bus9%8%
On foot or by bicycle10%10%
Work within 10 km (6 miles) of home (of those who travel to work)81%65%
Work 30 km (19 miles) or more away5%8%

Education and languages

Around this streetEngland
Degree or other higher qualification, Level 4+ (of adults)45%34%
No qualifications13%18%
Apprenticeship as highest qualification5%5%
Main language English (aged 3 and over)92%91%
Cannot speak English well or at all2%2%

Deprivation

The neighbourhood around this street is in decile 4 of 10 on the English Indices of Deprivation 2025, where 1 is the most deprived tenth of England's 33,755 neighbourhoods and 10 the least.

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

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.

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

Corby Road · Malvern Road · Marnham Drive · Malvern Close · Thyra Court · Caunton Avenue · Thyra Grove · Carriage Close · St Jude's Avenue · Mapperley Crescent · Bedlington Gardens · Peel Villas

All the streets in NG3 and across Nottingham.

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.