LL37 Postcode Data
Property data for the LL37 postcode district covering Gwynedd. Sold prices, crime statistics, energy performance, and demographic insights, all from HM Land Registry, Police UK, and the EPC Register.
Quick answer
The average sale price in LL37 is £188,680 (median £165,000), based on 110 HM Land Registry transactions. Police UK recorded 3 crimes within a 1-mile radius in 2026-05.
Headline pricing in LL37 is below the UK national average (England & Wales average ~£290k as of 2025). Stock is dominated by detached properties (61 of the last 110 sales).
Avg sale price
£188,680
110 sales
Median price
£165,000
Crime incidents
3
2026-05
Avg EPC score
n/a
79 certs
Recent sold prices
Latest 30 property sales in the LL37 area, sourced from HM Land Registry Price Paid Data.
detached
£208,902
61 sales
terraced
£135,600
25 sales
semi-detached
£180,988
20 sales
flat-maisonette
£92,000
1 sales
| Date | Address | Type | Price |
|---|---|---|---|
| Dec 2025 | ARIANFOR, LLWYNGWRIL | detached | £333,100 |
| Aug 2025 | SHELTON, LLWYNGWRIL | detached | £280,000 |
| Mar 2025 | TY LAFANT, LLWYNGWRIL | detached | £330,000 |
| Oct 2024 | BRON WYFLA, 1, WESLEY TERRACE, LLWYNGWRIL | terraced | £167,500 |
| Jun 2024 | GLAN Y WERN, LLWYNGWRIL | terraced | £235,000 |
| Sept 2023 | SALEM, LLWYNGWRIL | terraced | £276,500 |
| Sept 2023 | GARTH Y MOR, LLWYNGWRIL | detached | £535,000 |
| Jul 2023 | HYFRYDLE, LLWYNGWRIL | semi-detached | £340,000 |
| Oct 2022 | GARTH, LLWYNGWRIL | detached | £410,000 |
| Oct 2022 | YR HEN EFAIL, LLWYNGWRIL | other | £455,000 |
| Oct 2022 | HENDRE COTTAGE, LLWYNGWRIL | semi-detached | £259,500 |
| Sept 2022 | LLETTY WYNN, LLWYNGWRIL | semi-detached | £260,000 |
| Jun 2022 | THE DINGLE, LLWYNGWRIL | detached | £175,000 |
| May 2022 | GARTHOWEN, LLWYNGWRIL | detached | £300,000 |
| Jun 2021 | RECTORY, LLWYNGWRIL | detached | £490,000 |
Crime in LL37
3 reported crimes within a 1-mile radius of the postcode centroid in 2026-05, from Police UK data.
Anti Social Behaviour
2
Violent Crime
1
Energy performance
Aggregate EPC stats from 79 recently-certified properties in the LL37 area.
Sample size
79
Rating distribution
A
0
B
1
C
12
D
9
E
23
F
23
G
11
Area information
- Local authority
- Gwynedd
- Country
- Wales
- Wards
- Arthog a Llangelynnin
- Constituency
- Dwyfor Meirionnydd
- Latitude
- 52.6659
- Longitude
- -4.0838
More for LL37
Typical property
What the typical LL37 property looks like
Area summary, buyer notes, researched facts
Council tax
Gwynedd 2025/26 rates
All bands, monthly cost, discounts
Sold prices tool
Full transaction history for LL37
HM Land Registry from 1995
Corporate freeholders
Companies registered in LL37
Live Companies House data + PSCs
EPC checker
Look up any LL37 address
Energy ratings + improvement options
Crime checker
Local breakdown for LL37
Police UK monthly data
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Get a Property ReportData sources & methodology
Sold prices: HM Land Registry Price Paid Data, the official UK government records updated monthly. Sample uses the 30 most recent registered transactions in the postcode area.
Crime: Police UK street-level crime data, covering a 1-mile radius from the LL37 postcode centroid for the most recent month available (typically 2 months behind). For Scottish postcodes we use Police Scotland recorded-crime counts published by the Scottish Government (2024-25), reported by council area.
EPC: opendatacommunities.org, the official Energy Performance Certificate register for England and Wales. Aggregate stats from up to 30 most recent certificates in the postcode. For Scottish postcodes we use Scottish EPC Register lodgements, aggregated to a council-level band distribution (Q2 2025 to Q1 2026). For Northern Ireland we use the NISRA Census 2021 EPC-band classification of every household, aggregated by council (Census 2021).
Area data: postcodes.io, open data from the Office for National Statistics.