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Seion Terrace, Llanddeiniolen, Caernarfon

MyStreetCheck free street report: Seion Terrace, Llanddeiniolen, Caernarfon · 30 October 2026 · www.mystreetcheck.co.uk/caernarfon-gwynedd/seion-terrace/

House prices, sold prices and local information for LL55 3AF.

Average price (last 12 months)
–
0 sales
Average price (since 2024)
£155,000
1 sales
Price range
£155k – £155k
lowest to highest sale
Last sale
16 Dec 2024
LL55 3AF

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At a glance

1 property sale on Seion Terrace, Llanddeiniolen, Caernarfon has been recorded by HM Land Registry since 2024. The most recent sale was on 16 Dec 2024. Most sales here are terraced homes, which have sold for an average of £155,000.

House prices on Seion Terrace compared

LL55 postcode area£213,716
Caernarfon£197,763
England & Wales£358,701

Average sale price over the last 12 months. Seion Terrace has had fewer than two sales in that time, so it is left out. See all LL55 house prices.

Prices by property type

TypeSalesAverage priceLast sold
Terraced1£155,00016 Dec 2024

Sold prices on Seion Terrace

AddressDatePriceTypeTenure
6, Seion Terrace LL55 3AF 16 Dec 2024£155,000 TerracedFreehold

Sale prices are as recorded by HM Land Registry. Some sales (for example repossessions and company purchases) are listed but left out of the averages.

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Getting around, shops and health

Train stations

  • Llanfairpwll station 3.2 mi · 1 hr 4 min walk
  • Bangor (Gwynedd) station 3.4 mi · 1 hr 7 min walk

Nearest bus stops

  • Llys Gwynt (after, Main Road) 2 min walk
  • Llys Gwynt (before, B4366) 2 min walk
  • Rhosywylfa (after, B4547) 9 min walk
  • Rhosywylfa (after, B4547) 9 min walk

GP surgeries

  • Felinheli&Porthaethwy Su
    Rowen, Y Felinheli · 1.7 mi
  • Upcc At Ysbyty Gwynedd
    Upcc At Ysbyty Gwynedo, Penrhosgarnedd, Bangor · 2.1 mi

Supermarkets

  • Tesco Extra Tesco Bangor Extra · 2.1 mi
  • The Co-operative Food Co-op Llanrug - Station Road · 2.3 mi
  • Spar Spar - Caernarfon Road · 2.4 mi
  • The Food Warehouse Iceland Bangor Food Warehouse · 2.4 mi

Dentists

  • Mobile Dental Unit · 2.1 mi
  • Gwynedd Hospital (ga) · 2.1 mi
  • The Dental Clinic · 3.2 mi

Sources: Department for Transport (NaPTAN), NHS England organisation data, and GEOLYTIX Retail Points (open data). Walking times are estimates from straight-line distance.

Area profile

Homes

HereEng & Wales
Owned82.6%62.5%
Private rented13.0%20.3%
Social rented4.5%17.1%
Households493

People

HereEng & Wales
Under 1513.9%17.4%
Aged 15–6466.0%64.1%
Aged 65+20.1%18.6%
Residents1,180

Broadband

HereUK
Superfast (30Mbit+)100%95%
Ultrafast (300Mbit+)100%80%
Gigabit-capable100%80%

Share of homes on this street's postcodes that can get each speed. UK figure is the average across all postcodes. Source: Ofcom Connected Nations.

Mobile signal

HereEng & Wales
4G indoors, all 4 networks69%89%
4G indoors, at least 1 network98%100%
4G outdoors, all 4 networks94%99%
Calls indoors, all 4 networks80%92%

Share of homes across Gwynedd with good coverage (Jul 2025). Signal varies street by street; check your exact address on Ofcom's checker. Source: Ofcom Connected Nations.

Neighbourhood figures cover the surrounding Lower Layer Super Output Area (about 1,500 residents). Sources: Census 2021 (ONS) and the English Indices of Deprivation 2025.

Energy ratings and home sizes on Seion Terrace

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Who lives around Seion Terrace

Ethnic group

HereGwynedd
White99.5%96.2%
Asian, Asian British or Asian Welsh0.2%1.7%
Black, Black British, Black Welsh, Caribbean or African0.2%0.4%
Mixed or Multiple ethnic groups0.2%1.1%
Other ethnic group0%0.5%

Religion

HereGwynedd
No religion48.3%44.2%
Christian42.7%46.2%
Not answered7.9%7.3%
Other religion0.7%0.7%
Buddhist0.3%0.4%
Jewish0.2%0.1%
Hindu0%0.2%
Muslim0%1%

Country of birth

HereGwynedd
Born in the UK96%94.6%
Born outside the UK4%5.4%

Highest qualification

HereGwynedd
Level 4 qualifications and above45.8%34.5%
Level 3 qualifications17.6%18.7%
Level 2 qualifications14.4%14.6%
No qualifications10.3%16.3%
Level 1 and entry level qualifications5.5%7.6%
Apprenticeship5.4%5.8%
Other qualifications1.1%2.5%

General health

HereGwynedd
Very good health54.5%49.9%
Good health28.6%31.6%
Fair health13.6%13.3%
Bad health2.4%4%
Very bad health0.9%1.1%

Cars or vans per household

HereGwynedd
1 car or van in household34.8%41.9%
2 cars or vans in household34.8%28.1%
3 or more cars or vans in household22.6%12.4%
No cars or vans in household7.9%17.7%

Source: Census 2021 (ONS), via Nomis. Percentages of usual residents or households, as recorded in March 2021.

Figures cover the surrounding neighbourhood (Lower Layer Super Output Area, about 1,500 residents). Full demographics of Gwynedd.

Planning and heritage near Seion Terrace

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Noise, radon and ground hazards

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Planning applications near Seion Terrace

Recent planning applications around Seion Terrace from the council's planning register. Choose how far to look:

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Council tax here

Gwynedd Band D is £2,469 a year (Band A £1,646). See every band.

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Nearby streets in LL55

See all streets in Caernarfon All streets in LL55