Pensarn Derwenlas, Powys
14 addresses across 3 postcodes (SY20), about 3 km (1.8 miles) long. USRN 26207308.
- Energy: 3 homes have an energy certificate (D: 2, E: 1).
- Flood: No postcode centre on the street is in flood zone 2 or 3.
- Council tax: Most homes around it are in council tax band C; Band D in Powys costs £2,352 a year in 2026-27.
- Broadband: Gigabit broadband is available to 89% to 100% of premises.
- Transport: The nearest railway station is Machynlleth, about 2 km (1.3 miles) away in a straight line.
- Air: Background air pollution in 2024 was 1.3 µg/m³ of nitrogen dioxide and 3.9 of PM2.5, within UK legal limits.
- Height: Its addresses are 6 to 98 m above sea level.
- Noise: 5 of its 14 addresses are modelled at 55 dB or more from road traffic.
- Doctors: The nearest GP surgery is Glantwymyn Health Centre, about 2.1 km (1.3 miles) away.
- People: About 510 people lived in the census areas around it in 2021; 55% of households owned their home and 36% of adults held a degree or other higher qualification.
Sales on this street
No sales recorded on this street since January 1995 under this street name.
Energy performance certificates
3 homes with a current certificate; median floor area 85 m². Most common: House, semi-detached (2); Bungalow, detached (1). Built: 1900-1929 (2); 1967-1975 (1). Tenure at assessment: owner-occupied (3).
Each home's certificates and sales (1 address)
Council tax
What each band costs in Powys in 2026-27: Band D £2,352 a year on average, including the police and community council charges.
| A | B | C | D | E | F | G | H | I |
|---|---|---|---|---|---|---|---|---|
| £1,568 | £1,829 | £2,090 | £2,352 | £2,874 | £3,397 | £3,920 | £4,703 | £5,487 |
Homes by band in the neighbourhoods around this street: most are in band C (35% of about 2,270 homes).
Planning and heritage
- Conservation area: no postcode centre in this street's postcodes is in one.
- Listed buildings on or by this street: 5.
- Article 4 directions, tree preservation orders and green belt: Wales has no national record of these; the council's planning department holds them.
Listed buildings
- 1 Pensarn, grade II
- 2 Pensarn, grade II
- North Farm Building adjacent to Pennal Chapel, grade II
- Pennal Independent Chapel, grade II
- South Farm Building adjacent to Pennal Chapel, grade II
Roadworks
Street works permits come from the Department for Transport's Street Manager, which covers England only.
Flood risk
Rivers, the sea or surface water: of the 53 address points in this street's postcodes, 9 at high risk, 5 at medium risk and 4 at low risk. Each counts once, at the higher of its rivers-and-sea and surface-water risk.
Rivers and the sea alone: 6 at high risk, 5 at medium risk and 3 at low risk. Surface water and small watercourses alone: 3 at high risk, 0 at medium risk and 8 at low risk.
High: 3.3% (1 in 30) or more chance of flooding a year. Medium: 1% to 3.3%. Low: 0.1% to 1%. The map allows for flood defences. Address points are every property record (UPRN) in the postcode, each counted if it is in an area or within 5 m of one (the maps stop at building walls); a few are not homes, such as garages, business units or caravan pitches. 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. Welsh zones include an allowance for climate change.
| Postcode | Planning zone | Addresses at high / medium / low risk |
|---|---|---|
| SY20 8UA | not in 2 or 3 | 4 / 0 / 1 |
| SY20 8TU | not in 2 or 3 | 0 / 0 / 1 |
| SY20 8TL | not in 2 or 3 | 5 / 5 / 2 |
Height above sea level
The street's 14 addresses are between 6 m and 98 m above sea level (58 m on average); the ground rises about 92 m from the lowest to the highest.
Broadband
| Postcode | Superfast (30 Mbit/s+) | Ultrafast (300 Mbit/s+) | Gigabit | Below 10 Mbit/s |
|---|---|---|---|---|
| SY20 8TL | 100% | 100% | 100% | 0% |
| SY20 8TU | 100% | 100% | 100% | 0% |
| SY20 8UA | 89% | 89% | 89% | 11% |
Getting around
| Nearest | Distance | |
|---|---|---|
| Railway stations | Machynlleth 128,000 journeys in 2024–25 | 2 km (1.3 miles) |
| Dovey Junction 41,000 journeys in 2024–25 | 4 km (2.5 miles) | |
| Penhelig 8,190 journeys in 2024–25 | 11.8 km (7.3 miles) | |
| Bus stops | None within 800 m (0.5 miles) | |
| EV charging points | Evolt Network | 1.8 km (1.1 miles) |
| Airport with scheduled flights | Liverpool John Lennon Airport LPL | 108 km (67 miles) |
Local services
| Nearest | Distance | |
|---|---|---|
| GP surgeries | Glantwymyn Health Centre | 2.1 km (1.3 miles) |
| Pharmacies | Rowlands Pharmacy | 1.6 km (1 mile) |
| NHS dentists | Llys Einion Dental Surgery | 1.9 km (1.2 miles) |
| Hospital | Broddyfi Community Hospital | 2.1 km (1.3 miles) |
| Police station | Machynlleth Police Station | 1.9 km (1.2 miles) |
| Cash machines | The Cooperative Food Machynlleth, Machynlleth Cashzone | 1.9 km (1.2 miles) |
Parks and green space
| Nearest | Distance | |
|---|---|---|
| Play area | Unnamed 160 m² | 1 km (0.6 miles) |
| Playing field | Unnamed 2.9 ha | 1.2 km (0.8 miles) |
| Allotments | Unnamed 1,360 m² | 1.6 km (1 mile) |
Landmarks
The nearest historic landmark is Plas Machynlleth, a registered park or garden (Grade II), 1.5 km (0.9 miles) north-east. 1 listed building is within 1 km (0.6 miles).
| Name | What it is | From the middle of the street |
|---|---|---|
| Plas Machynlleth | Registered park or garden, Grade II | 1.5 km (0.9 miles) north-east |
| The Slate Landscape of Northwest Wales - Bryneglwys Slate Quarry, Abergynolwyn Village and the Talyllyn Railway | World Heritage Site | 9.9 km (6.1 miles) north-west |
| Name | What it is | From the middle of the street |
|---|---|---|
| Wylfa | Hill | 510 m (0.3 miles) north-east |
| Coed Cae'rbobian | Wood | 1 km (0.6 miles) south-east |
| Llyn Ruck | Lake or reservoir | 2.1 km (1.3 miles) north |
| Llyfnant Valley | Valley | 2.4 km (1.5 miles) south-west |
| Llyn y Bwtri | Tidal water | 3 km (1.9 miles) west |
| Cors Dyfi | Wetland | 3.4 km (2.1 miles) west |
Air quality
| Pollutant | Here | UK limit | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 1.3 | 40 | 10 |
| Fine particles (PM2.5) | 3.9 | 20 | 5 |
| Particles (PM10) | 5.9 | 40 | 15 |
All three are within both the UK limits and the WHO guidelines.
Road and rail noise
| Level | Road traffic | Railways |
|---|---|---|
| 70 to 74 | 3 | 0 |
| 60 to 64 | 1 | 0 |
| 55 to 59 | 1 | 3 |
| Under 55 | 9 | 11 |
5 of the street's 14 addresses are modelled at 55 dB or more from road traffic, and 3 from railways, 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 Powys: see them on the Powys page.
Nearest schools
| School | Phase | Ages | Distance | Inspection |
|---|---|---|---|---|
| Ysgol Bro Hyddgen Welsh medium | All-through | 4–19 | 1.5 km (1 mile) | Estyn reports · My Local School |
Food hygiene ratings nearby
No rated food businesses within 500 m (0.3 miles).
Crime within 250 m
No crimes recorded at anonymised points within 250 m in this period (north-wales).
People and work
Who lives here
| Around this street | Wales | |
|---|---|---|
| Median age | 51 | 43 |
| Children under 15 | 12% | 17% |
| Aged 65 and over | 27% | 21% |
Homes
| Around this street | Wales | |
|---|---|---|
| Owned (outright or with a mortgage) | 55% | 66% |
| Owned outright | 39% | 38% |
| Shared ownership | 0% | under 1% |
| Social rented | 24% | 17% |
| Private rented | 21% | 17% |
Work and commuting
| Around this street | Wales | |
|---|---|---|
| Adults (16 and over) in work | 61% | 54% |
| Unemployment (of those working or looking for work) | 2% | 6% |
| Retired (of adults) | 23% | 25% |
| Long-term sick or disabled (of adults) | 6% | 6% |
| Work mainly from home (of those in work) | 40% | 26% |
| Travel to work by car or van | 42% | 61% |
| By train, Underground, metro or tram | under 1% | under 1% |
| By any public transport, including bus | 2% | 3% |
| On foot or by bicycle | 15% | 8% |
| Work within 10 km (6 miles) of home (of those who travel to work) | 39% | 60% |
| Work 30 km (19 miles) or more away | 28% | 10% |
Education and languages
| Around this street | Wales | |
|---|---|---|
| Degree or other higher qualification, Level 4+ (of adults) | 36% | 32% |
| No qualifications | 18% | 20% |
| Apprenticeship as highest qualification | 5% | 6% |
| Main language English or Welsh (aged 3 and over) | 99% | 97% |
| Cannot speak English well or at all | under 1% | under 1% |
Deprivation
The 2 neighbourhoods around this street are in deciles 5 to 6 of 10 on the Welsh Index of Multiple Deprivation 2025, where 1 is the most deprived tenth of Wales's 1,917 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
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.