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AREA REPORT · GWYNEDD LL55

LL55.

Gwynedd

LL55 is an outcode in Gwynedd, covering the neighbourhoods of Caernarfon East, Llanberis & Deiniolen, Caernarfon West & Waunfawr, Bethel & Llanrug and Porthmadog. Over the last 12 months 171 properties changed hands — a median of £105k for flats (£1,652/sqm) and £201k for houses (£2,323/sqm). Housing stock peaks at EPC band D.

Sales · 12m
171
620 over 3y
Houses · £/sqm
£2,323
n=156
Flats · £/sqm
£1,652
n=4
EPC score
62
Potential 81
PRICE MATRIX
Sales by window, type, and floor area.
Houses · 6m
Avg £
£216k
n=51
Median £
£200k
n=51
Avg £/sqm
£2,461
n=49
Median £/sqm
£2,361
n=49
Houses · 12m
Avg £
£223k
n=166
Median £
£201k
n=166
Avg £/sqm
£2,522
n=156
Median £/sqm
£2,323
n=156
Houses · 3y
Avg £
£226k
n=601
Median £
£205k
n=601
Avg £/sqm
£2,395
n=557
Median £/sqm
£2,304
n=557
Flats · 6m
Avg £
£75k
n=1
Median £
£75k
n=1
Avg £/sqm
£1,293
n=1
Median £/sqm
£1,293
n=1
Flats · 12m
Avg £
£117k
n=5
Median £
£105k
n=5
Avg £/sqm
£1,626
n=4
Median £/sqm
£1,652
n=4
Flats · 3y
Avg £
£100k
n=19
Median £
£95k
n=19
Avg £/sqm
£1,696
n=11
Median £/sqm
£1,727
n=11
£/sqm derives from EPC-matched floor area. Thin-coverage rows appear muted.
PRICE + VOLUME · 25Y
Medians and monthly sales, 2001–present.
£6k£113k£220k20052010201520202025Median house · 12m smoothedMedian flat · 12m smoothedSales volume (monthly)
EPC · 25Y
Certificates issued, by band.
063912772010201520202025
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)
5 · click column to sort
Caernarfon East
3,928
3,020
Llanberis & Deiniolen
2,465
1,909
Caernarfon West & Waunfawr
1,764
1,702
Bethel & Llanrug
1,400
1,624
Porthmadog
300
290
Wards
14 · click column to sort
Canol Tref Caernarfon
1,121
1,145
Menai
691
1,035
Llanberis
856
860
Peblig
1,502
749
Deiniolen
1,253
729
Llanrug
622
716
Hendre
657
597
Cwm-y-glo
512
534
Bethel a'r Felinheli
426
516
Waunfawr
507
463
Y Bontnewydd
395
376
Cadnant
819
357
Glaslyn
300
290
Penisa'r-waun
196
178
LAND REGISTRY · EPC · ONS UPRN · GEOLYTIX · REFRESHED 25 APR 2026