UK Property Check · Printed on 8 November 2026ukpropertycheck.co.uk/postcode/sy18
SY18Llanidloes, Powys, Wales
House prices in SY18, Llanidloes
Homes in SY18 sold for a median of £211,500 between September 2024 and August 2026, from 98 standard sales.
That is 15% below the £250,000 median for the Powys council area.
Prices by property type
| Type | Sales | Median price | Middle half |
|---|---|---|---|
| Detached | 38 | £312,500 | £232,000 to £375,000 |
| Semi-detached | 19 | £235,000 | £194,000 to £261,000 |
| Terraced | 38 | £140,000 | £123,000 to £185,000 |
SY18 has too few sales linked to an energy certificate for its own price per m². Nearby districts priced within 20% of it have their own: SY21 at £2,500 per m² from 21 sales and SY23 at £2,889 per m² from 20 sales.
Detached houses and terraced houses sold in similar numbers here, at 39% and 39% of sales.
Compare an asking price
- Check a home for its floor area
- How much to offer, then how to put the offer in writing
- Work out Land Transaction Tax
Where prices are higher in SY18
Each dot is a postcode in SY18 with at least 3 standard sales from September 2024 to August 2026, shaded by the median price of those sales. Select a dot for its median and a link to its sales, or use the list below the map.
Map loading
List the 8 postcodes on the map, dearest first
Prices over time
The median rose 48%, from £135,000 in 2016 to £200,000 in 2025, the same as the 48% rise for a typical district in Wales.
Sales picked up in 2025: 59 standard sales in SY18, 23% more than the 48 in 2024.
Energy ratings of homes for sale
| Rating | Homes | Share |
|---|---|---|
| A | 1 | |
| B | 6 | |
| C | 39 | |
| D | 36 | |
| E | 14 | |
| F | 11 | |
| G | 3 |
Only 42% of homes put up for sale were rated C or better, against 52% across England and Wales.
When the homes were built
| Built | Homes | Share |
|---|---|---|
| 37 | ||
| 22 | ||
| 5 | ||
| 12 | ||
| 13 | ||
| 10 | ||
| 11 |
54% of homes put up for sale were built before 1930, against 24% across England and Wales. For older homes RICS suggests a Level 3 survey: see which survey you need.
With 34% built before 1900, ask early whether a home is listed or in a conservation area, which limits the work you can do: see buying a listed building and buying in a conservation area.
Recent sales
The 10 latest sales ran from £130,000 for a terraced house on Long Bridge Street to £390,000 for a detached house on Cae Capel.
The latest standard sales recorded in SY18. Sales take 2 weeks to 2 months to appear (how to find out what a house sold for). Select an address to check that home, or a postcode for every sale there.
- NantllemystenSold for £251,000
- Nant Yr Aderyn, 20 Rhos Y Maen UchafSold for £305,000
- 1 Jubilee TerraceSold for £140,000
- Brynawelon, 9 Tan Yr AlltSold for £199,950
- Pax Cae CapelSold for £390,000
- 4 Cwrt HafrenSold for £158,000
- 21 Hafren TerraceSold for £360,000
- Glynrhedyn CwmduSold for £340,000
- 36 Long Bridge StreetSold for £130,000
- Juniper Bank Penygreen RoadSold for £330,000
Living in SY18
Crime
39 crimes per 1,000 residents in the year to August 2026
Lower than 87 in 100 postcode districts. England and Wales: 84. The middle half of postcode districts are between 47 and 93.
The rate counts every crime recorded in an area against the people who live there, so shops, stations and nightlife push it up.
Gigabit broadband
Across its postcodes, an average of 69% of homes can get it
Lower than 79 in 100 postcode districts. England and Wales: 89%. The middle half of postcode districts are between 73% and 94%.
Radon
Every postcode is in a 1 km square that includes a radon Affected Area
Higher than 83 in 100 postcode districts.
In a radon Affected Area, UKHSA recommends a radon test. A UKradon report gives the result for an exact address.
Council tax
Band D is £2,352 a year in Powys for 2026 to 2027
Lower than 67 in 100 council areas. Wales: £2,283. The middle half of council areas are between £2,323 and £2,526.
Band D includes every charge on the bill, such as the police and any community council.
The free check gives these for a single home, with the nearest schools and road and rail noise (how we work them out).
Crime: data.police.uk, with Census 2021 population from the Office for National Statistics. Broadband: Ofcom Connected Nations, January 2026. Radon: the British Geological Survey and UKHSA. Council tax: the Welsh Government. Contains public sector information licensed under the Open Government Licence v3.0.
Coal mining
None of the 225 live postcodes in SY18 is in the Mining Remediation Authority's coal mining reporting area, although 39% of postcodes in Wales are.
About these figures
The figures come from 98 standard sales in SY18, the latest on 26 August 2026 (what counts as a standard sale). Of these, fewer than 1 in 10 were flats.
Updated 15 October 2026 with sales recorded to August 2026. Next update due in late November 2026.
Contains HM Land Registry data © Crown copyright and database right 2026. Energy certificate data from the Ministry of Housing, Communities and Local Government. Both are licensed under the Open Government Licence v3.0.