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AREA REPORT · GWYNEDD LL40

LL40.

Gwynedd

LL40 is an outcode in Gwynedd, covering the neighbourhoods of Barmouth & Dolgellau, Tywyn & Llangelynnin, Bala & Mawddwy and Blaenau Ffestiniog & Trawsfynydd. Over the last 12 months 43 properties changed hands — a median of £147k for flats (£1,804/sqm) and £200k for houses (£2,093/sqm). Housing stock peaks at EPC band D.

Sales · 12m
43
183 over 3y
Houses · £/sqm
£2,093
n=34
Flats · £/sqm
£1,804
n=4
EPC score
57
Potential 81
PRICE MATRIX
Sales by window, type, and floor area.
Houses · 6m
Avg £
£195k
n=6
Median £
£188k
n=6
Avg £/sqm
£1,904
n=6
Median £/sqm
£1,911
n=6
Houses · 12m
Avg £
£223k
n=39
Median £
£200k
n=39
Avg £/sqm
£2,096
n=34
Median £/sqm
£2,093
n=34
Houses · 3y
Avg £
£242k
n=173
Median £
£200k
n=173
Avg £/sqm
£2,352
n=155
Median £/sqm
£2,240
n=155
Flats · 6m
Avg £
£107k
n=1
Median £
£107k
n=1
Avg £/sqm
£1,911
n=1
Median £/sqm
£1,911
n=1
Flats · 12m
Avg £
£147k
n=4
Median £
£147k
n=4
Avg £/sqm
£1,974
n=4
Median £/sqm
£1,804
n=4
Flats · 3y
Avg £
£148k
n=10
Median £
£138k
n=10
Avg £/sqm
£2,045
n=10
Median £/sqm
£1,852
n=10
£/sqm derives from EPC-matched floor area. Thin-coverage rows appear muted.
PRICE + VOLUME · 25Y
Medians and monthly sales, 2001–present.
£0k£125k£251k20052010201520202025Median house · 12m smoothedMedian flat · 12m smoothedSales volume (monthly)
EPC · 25Y
Certificates issued, by band.
01012012010201520202025
A
B
C
D
E
F
G
Total issued
COUNCIL TAX
Band distribution.
Council tax data coming in Phase 2.
SECTORS
Drill down to sector.
COVERAGE
Neighbourhoods and wards.
Neighbourhoods (MSOA)
4 · click column to sort
Barmouth & Dolgellau
1,977
1,977
Tywyn & Llangelynnin
53
13
Blaenau Ffestiniog & Trawsfynydd
1
2
Bala & Mawddwy
1
0
Wards
6 · click column to sort
De Dolgellau
697
762
Gogledd Dolgellau
668
704
Brithdir and Llanfachreth/Ganllwyd/Llanelltyd
612
511
Arthog a Llangelynnin
53
13
Trawsfynydd
1
2
Llanuwchllyn
1
0
LAND REGISTRY · EPC · ONS UPRN · GEOLYTIX · REFRESHED 25 APR 2026