LL42 area guide
House prices, recent sales, crime and schools for the LL42 postcode district in Gwynedd. Free to read, from official open data. For one address in detail, run a full property report.
Gwynedd · 2026-05 (UK HPI)
Median £147,500
Street-level crime at the district centre
Ofsted rated, within one mile
What the data says about LL42
The average home across Gwynedd is worth about £203,619 (UK House Price Index, 2026-05), and the median of the 8 most recent Land Registry sales recorded inside LL42 is £147,500, and prices have risen 2.5% over the last year.
Of 115 energy certificates sampled across 12 postcodes in LL42, band E is the most common, and 87.8% of homes sit below band C — the point at which most lenders' green mortgage deals and future rental rules bite.
Police recorded 137 crimes around the centre of LL42 in the six months to 2026-06, most often violence and sexual offences (58).
There are 0 schools rated Good or Outstanding by Ofsted within a mile of LL42 in Gwynedd.
The district covers the Abermaw, Brithdir and Llanfachreth/Ganllwyd/Llanelltyd ward areas.
Sample of 115 energy certificates from 12 postcodes in LL42, taken from the government energy performance register, most recent lodged 2026. Indicative of the district rather than a full census.
Prices changed +2.5% over the last year in Gwynedd.
Street-level crime from data.police.uk, six months to 2026-06.
Abermaw · Brithdir and Llanfachreth/Ganllwyd/Llanelltyd
Common questions about LL42
What is the average house price in LL42?
The UK House Price Index puts the average home in Gwynedd at £203,619 as of 2026-05. Recent Land Registry sales recorded inside the LL42 district have a median price of £147,500.
How much does each property type cost in LL42?
Detached £315,747, semi-detached £209,692, terraced £160,432, flats £114,979, based on the UK House Price Index for Gwynedd.
Is LL42 a safe area?
Police recorded 137 crimes near the centre of LL42 in the six months to 2026-06. The most common category was violence and sexual offences with 58 reports. Crime is recorded at street level, so figures vary street to street within the same district.
What EPC rating do homes in LL42 usually have?
Band E is the most common rating in our sample of 115 certificates from LL42, with 87.8% of homes rated below band C. A full property report shows the exact certificate, running costs and recommended improvements for one address.
What are the schools like near LL42?
0 schools within a mile of the LL42 district centre are rated Good or Outstanding by Ofsted. Catchment areas are set by the local authority and can change year to year.
Where does this LL42 data come from?
HM Land Registry Price Paid Data and the UK House Price Index for prices, the government's energy performance register for EPC bands, data.police.uk for crime, Get Information About Schools and Ofsted for schools, and ONS postcode geography. All are published under the Open Government Licence v3.0.
A full report covers the energy certificate, sale history and valuation, council tax band and bill, flood and crime risk, schools, transport and neighbourhood data for a single property.
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Sources: HM Land Registry Price Paid Data and UK House Price Index, ONS postcode geography, data.police.uk, Get Information About Schools and Ofsted. Contains public sector information licensed under the Open Government Licence v3.0.