The House CheckCheck before you offer

Monfa, Groeslon, Caernarfon, LL54 7ST

Semi-detachedFreehold85 m² · EPC
Last sale£175,000Nov 2018 · HM Land Registry
If it moved with Gwynedd semi-detached prices£239,000Aug 2026 · UK HPI
Road noiseAbout 57 dB
EnergyEPC DOct 2022
12MapN ↑115 m ↔
Contains OS data © Crown copyright and database right 2026 · Contains HM Land Registry data © Crown copyright and database right 2026

Before you offer

2 things to check

1Road noise: About 57 dB

Outdoor noise can affect sleep and enjoyment of the home.

Visit at busy times and check the rooms with the windows open.

Welsh Government · 2021

2Radon: Testing advised

Higher-radon area (5–10% of homes). Radon can affect long-term health.

Ask for existing test results or use a 3-month test kit, about £50.

BGS / UKHSA · Dec 2022

+ Flood risk very low · Outside coal high-risk area · EPC D

Not covered here yet: conservation area, listed buildings nearby, article 4 direction, tree protection, airport noise. Your conveyancer’s local search covers the planning checks.

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Price

If it moved with Gwynedd semi-detached prices

£239,000

How does the asking price compare?

Enter a figure, or “offers over £500k”. Saved privately on this device

This home’s sale history

Jul 2011 £140,000Nov 2018 £175,000Jul 2011Nov 2018£175,000
SoldPriceTypeTenureRecord
Nov 2018£175,000Semi-detachedFreeholdA
Jul 2011£140,000Semi-detachedFreeholdA

Street sales

Same type and tenure, other homes in the last 36 months: £142,750 · 2 sales

AddressSoldPriceTypeTenure
Penybont, Groeslon, Caernarfon, LL54 7EWAug 2026£575,000DetachedFreehold
Bryn Eithin, Groeslon, Caernarfon, LL54 7DWMay 2026£360,000DetachedFreehold
1, Bryn Gwenallt, Groeslon, Caernarfon, LL54 7UBOct 2025£165,500Semi-detachedFreehold
Gerallt, Groeslon, Caernarfon, LL54 7TDAug 2025£108,000TerracedFreehold
Beudy'r Wennol, Groeslon, Caernarfon, LL54 7UFJun 2025£30,000Other propertyFreehold
Garreg Wen, Groeslon, Caernarfon, LL54 7EBJun 2025£450,000DetachedFreehold
2, Bryn Neuadd, Groeslon, Caernarfon, LL54 7STApr 2025£145,000TerracedFreehold
Ramoth Chapel House, Groeslon, Caernarfon, LL54 7DGJan 2025£75,000Other propertyFreehold
Show all 164
AddressSoldPriceTypeTenure
Bala Villa, Groeslon, Caernarfon, LL54 7TGJan 2025£120,000Semi-detachedFreehold
Whitegate, Groeslon, Caernarfon, LL54 7EDDec 2024£230,000DetachedFreehold
Cil Llidiart, Groeslon, Caernarfon, LL54 7EDAug 2024£375,000DetachedFreehold
Penygamfa, Groeslon, Caernarfon, LL54 7EWJul 2024£326,000DetachedFreehold
Swn Yr Afon, Groeslon, Caernarfon, LL54 7EGSep 2023£250,000Semi-detachedFreehold
Bryn Dyffryn, Groeslon, Caernarfon, LL54 7UBDec 2022£170,000Semi-detachedFreehold
Penrallt, Groeslon, Caernarfon, LL54 7UBDec 2022£375,000DetachedFreehold
Bryn Difyr, Groeslon, Caernarfon, LL54 7UBOct 2022£250,000Semi-detachedFreehold
Grugan Newydd, Groeslon, Caernarfon, LL54 7TFAug 2022£245,000DetachedFreehold
Mwyndy, Groeslon, Caernarfon, LL54 7DGJun 2022£285,000DetachedFreehold
Bryn Alun, Groeslon, Caernarfon, LL54 7TUDec 2021£728,000DetachedFreehold
Argoed, Groeslon, Caernarfon, LL54 7STJun 2021£150,000TerracedFreehold
Gilwern Isaf, Groeslon, Caernarfon, LL54 7EHMay 2021£332,000Other propertyFreehold
Penffordd Elen Farm, Groeslon, Caernarfon, LL54 7DPApr 2021£430,000Other propertyFreehold
Ty Popty, Groeslon, Caernarfon, LL54 7UDFeb 2020£270,000Semi-detachedFreehold
Gorshill, Groeslon, Caernarfon, LL54 7DLFeb 2020£163,000DetachedFreehold
2, Bryn Neuadd, Groeslon, Caernarfon, LL54 7STJan 2020£87,500TerracedFreehold
Nythfa, Groeslon, Caernarfon, LL54 7TDDec 2019£104,000TerracedFreehold
Bryn Goleu, Groeslon, Caernarfon, LL54 7EDSep 2019£310,500DetachedFreehold
Ashgrove, Groeslon, Caernarfon, LL54 7STJul 2019£77,000DetachedFreehold
East Lodge Glynllifion, Groeslon, Caernarfon, LL54 7UFJul 2019£260,000DetachedFreehold
Chapel And Vestry At Bryn Rhos, Groeslon, Caernarfon, LL54 7DLApr 2019£120,000Other propertyFreehold
6, Cae Bryn, Groeslon, Caernarfon, LL54 7SUDec 2018£176,500Semi-detachedFreehold
Capel Gosen, Groeslon, Caernarfon, LL54 7TGDec 2018£74,000Other propertyFreehold
Monfa, Groeslon, Caernarfon, LL54 7STNov 2018£175,000Semi-detachedFreehold
Cefn Tryfan, Groeslon, Caernarfon, LL54 7ENOct 2018£290,000Other propertyFreehold
15, Cae Sarn, Groeslon, Caernarfon, LL54 7TWMay 2018£144,000DetachedFreehold
21, Cae Sarn, Groeslon, Caernarfon, LL54 7TWMay 2018£155,000DetachedFreehold
Tyddyn Meinsier, Groeslon, Caernarfon, LL54 7TUMar 2018£248,000DetachedFreehold
Pen Y Bryn, Groeslon, Caernarfon, LL54 7DLMar 2018£105,000Semi-detachedFreehold
Moelfra, Groeslon, Caernarfon, LL54 7DPOct 2017£256,000Semi-detachedFreehold
Trem-Y-Werydd, Groeslon, Caernarfon, LL54 7ENAug 2017£345,000Other propertyFreehold
Appi Forum, Groeslon, Caernarfon, LL54 7UDJul 2017£259,950Other propertyFreehold
8, Cae Bryn, Groeslon, Caernarfon, LL54 7SUJan 2017£115,000DetachedFreehold
Glanddol, Groeslon, Caernarfon, LL54 7TWOct 2016£150,000Semi-detachedFreehold
Penybont, Groeslon, Caernarfon, LL54 7EWAug 2016£294,500DetachedFreehold
Ty Clyd, Groeslon, Caernarfon, LL54 7BFJun 2016£155,000DetachedFreehold
Hen Bost, Groeslon, Caernarfon, LL54 7STMay 2016£156,000DetachedFreehold
Cerrig Llwydion, Groeslon, Caernarfon, LL54 7TUSep 2015£399,950DetachedFreehold
Minffordd, Groeslon, Caernarfon, LL54 7DLSep 2015£131,500DetachedFreehold
Bryn Clynnog, Groeslon, Caernarfon, LL54 7TDSep 2015£87,000TerracedFreehold
Bryn Alun, Groeslon, Caernarfon, LL54 7TUMay 2015£354,500DetachedFreehold
24, Cae Sarn, Groeslon, Caernarfon, LL54 7TWMay 2015£139,500DetachedFreehold
Bryn Pistyll, Groeslon, Caernarfon, LL54 7EDMay 2015£217,500DetachedFreehold
Hafod Boeth, Groeslon, Caernarfon, LL54 7EWFeb 2015£210,000DetachedFreehold
Minffordd, Groeslon, Caernarfon, LL54 7DLOct 2014£137,500DetachedFreehold
Fron Heulog, Groeslon, Caernarfon, LL54 7DNJul 2014£118,000DetachedFreehold
8, Cae Sarn, Groeslon, Caernarfon, LL54 7TWMay 2014£153,500Semi-detachedFreehold
Llys-Y-Delyn, Groeslon, Caernarfon, LL54 7EHMay 2014£245,000DetachedFreehold
Treflys, Groeslon, Caernarfon, LL54 7TDDec 2013£95,000Semi-detachedFreehold
Vicarage, Groeslon, Caernarfon, LL54 7DLJul 2013£225,000DetachedFreehold
Grafog Farm, Groeslon, Caernarfon, LL54 7UEApr 2013£249,000DetachedFreehold
Ashgrove, Groeslon, Caernarfon, LL54 7STFeb 2013£72,000DetachedFreehold
5, Cae Bryn, Groeslon, Caernarfon, LL54 7SUFeb 2013£120,000Semi-detachedFreehold
Llannerch, Groeslon, Caernarfon, LL54 7DWDec 2012£154,000DetachedFreehold
16, Cae Sarn, Groeslon, Caernarfon, LL54 7TWNov 2012£138,000Semi-detachedFreehold
Bryn Difyr, Groeslon, Caernarfon, LL54 7UBNov 2012£135,000Semi-detachedFreehold
Bron Iwrch, Groeslon, Caernarfon, LL54 7TWOct 2012£248,000DetachedFreehold
Glasfryn, Groeslon, Caernarfon, LL54 7STSep 2012£180,000DetachedFreehold
7, Cae Bryn, Groeslon, Caernarfon, LL54 7SUApr 2012£135,000DetachedFreehold
Moelfra, Groeslon, Caernarfon, LL54 7DPDec 2011£68,000Semi-detachedFreehold
1, Bryn Neuadd, Groeslon, Caernarfon, LL54 7STOct 2011£112,500TerracedFreehold
Rhos Eilian, Groeslon, Caernarfon, LL54 7STJul 2011£115,000Semi-detachedFreehold
Monfa, Groeslon, Caernarfon, LL54 7STJul 2011£140,000Semi-detachedFreehold
Ty Coch, Groeslon, Caernarfon, LL54 7UDJun 2011£301,500DetachedFreehold
Nythfa, Groeslon, Caernarfon, LL54 7TDApr 2011£67,500TerracedFreehold
1, Bryn Ennan, Groeslon, Caernarfon, LL54 7EDMar 2011£117,000Semi-detachedFreehold
2, Bryn Gwenallt, Groeslon, Caernarfon, LL54 7UBFeb 2011£114,000Semi-detachedFreehold
7, Cae Bryn, Groeslon, Caernarfon, LL54 7SUDec 2010£112,500DetachedFreehold
8, Cae Bryn, Groeslon, Caernarfon, LL54 7SUSep 2010£129,950DetachedFreehold
Bryn Afon, Groeslon, Caernarfon, LL54 7DNAug 2010£200,000DetachedFreehold
13, Cae Bryn, Groeslon, Caernarfon, LL54 7SUMar 2010£138,500Semi-detachedFreehold
Llaingro, Groeslon, Caernarfon, LL54 7DWNov 2009£187,000DetachedFreehold
21, Cae Sarn, Groeslon, Caernarfon, LL54 7TWJun 2009£130,000DetachedFreehold
Minafon, Groeslon, Caernarfon, LL54 7EDApr 2009£159,000DetachedFreehold
Garreg Coch, Groeslon, Caernarfon, LL54 7EBApr 2009£130,950DetachedFreehold
Islwyn, Groeslon, Caernarfon, LL54 7STAug 2008£130,000Semi-detachedFreehold
1, Bryn Neuadd, Groeslon, Caernarfon, LL54 7STJan 2008£85,000TerracedFreehold
1, Llwyn Onn, Groeslon, Caernarfon, LL54 7DGJan 2008£160,000Semi-detachedFreehold
Bryn Eglwys, Groeslon, Caernarfon, LL54 7UBOct 2007£192,500DetachedFreehold
Bryn Hafod, Groeslon, Caernarfon, LL54 7DNJun 2007£350,000DetachedFreehold
Bwthyn Cefn Tryfan, Groeslon, Caernarfon, LL54 7ENMar 2007£163,000DetachedFreehold
Islwyn, Groeslon, Caernarfon, LL54 7STFeb 2007£124,000Semi-detachedFreehold
1, Brynteg, Groeslon, Caernarfon, LL54 7UAJan 2007£105,000Semi-detachedFreehold
3, Bryn Neuadd, Groeslon, Caernarfon, LL54 7STOct 2006£60,000TerracedFreehold
Plas Mawr, Groeslon, Caernarfon, LL54 7UFJun 2006£378,000DetachedFreehold
Bryn Eglwys, Groeslon, Caernarfon, LL54 7UBMar 2006£110,000DetachedFreehold
Graianfa, Groeslon, Caernarfon, LL54 7DNMar 2006£165,000Semi-detachedFreehold
Cefn Coed, Groeslon, Caernarfon, LL54 7EHDec 2005£200,000DetachedFreehold
Pen Y Bryn, Groeslon, Caernarfon, LL54 7TUSep 2005£90,000Semi-detachedFreehold
Gwel Y Fenai, Groeslon, Caernarfon, LL54 7TDAug 2005£148,000DetachedFreehold
Rhos Eilian, Groeslon, Caernarfon, LL54 7STAug 2005£110,000Semi-detachedFreehold
Penllyn, Groeslon, Caernarfon, LL54 7UBJul 2005£284,000DetachedFreehold
Clydanedd, Groeslon, Caernarfon, LL54 7EGJun 2005£230,000TerracedFreehold
18, Cae Sarn, Groeslon, Caernarfon, LL54 7TWJun 2005£135,000Semi-detachedFreehold
Penllyn, Groeslon, Caernarfon, LL54 7UBJun 2004£274,000DetachedFreehold
Fron Heulog, Groeslon, Caernarfon, LL54 7DNApr 2004£100,000DetachedFreehold
2, Cae Bryn, Groeslon, Caernarfon, LL54 7SUApr 2004£120,000Semi-detachedFreehold
Bryn Hafod, Groeslon, Caernarfon, LL54 7DNDec 2003£222,500DetachedFreehold
Cil Llidiart, Groeslon, Caernarfon, LL54 7EDSep 2003£185,000DetachedFreehold
1, Garreg Fawr, Groeslon, Caernarfon, LL54 7EBApr 2003£45,000Semi-detachedFreehold
Ramoth House, Groeslon, Caernarfon, LL54 7DGApr 2003£32,000DetachedFreehold
2, Bryn Gwenallt, Groeslon, Caernarfon, LL54 7UBApr 2003£70,000Semi-detachedFreehold
Glanddol, Groeslon, Caernarfon, LL54 7TWFeb 2003£51,000Semi-detachedFreehold
10, Cae Bryn, Groeslon, Caernarfon, LL54 7SUJan 2003£74,950Semi-detachedFreehold
Cefn Coed, Groeslon, Caernarfon, LL54 7EHDec 2002£137,000DetachedFreehold
8, Cae Sarn, Groeslon, Caernarfon, LL54 7TWMay 2002£65,500TerracedFreehold
Bron Iwrch, Groeslon, Caernarfon, LL54 7TWMay 2002£180,000DetachedFreehold
Ty Bryn Rhosyn, Groeslon, Caernarfon, LL54 7DLApr 2002£52,900DetachedFreehold
Coed Y Glyn, Groeslon, Caernarfon, LL54 7DEMar 2002£111,000DetachedFreehold
Cae Cyd, Groeslon, Caernarfon, LL54 7DPFeb 2002£160,000DetachedFreehold
Bryn Hyfryd, Groeslon, Caernarfon, LL54 7TWJan 2002£29,000DetachedFreehold
Swn Y Gwynt, Groeslon, Caernarfon, LL54 7DLDec 2001£95,000DetachedFreehold
Hen Bost, Groeslon, Caernarfon, LL54 7STNov 2001£62,500DetachedFreehold
Tyddyn Meinsier, Groeslon, Caernarfon, LL54 7TUAug 2001£131,000DetachedFreehold
Trem-Y-Werydd, Groeslon, Caernarfon, LL54 7ENAug 2001£115,000DetachedFreehold
Cartrefle, Groeslon, Caernarfon, LL54 7STJul 2001£43,500Semi-detachedFreehold
Bryn Pistyll, Groeslon, Caernarfon, LL54 7EDJul 2001£94,000DetachedFreehold
Glanddol, Groeslon, Caernarfon, LL54 7TWJul 2001£42,000Semi-detachedFreehold
Cae Ffridd, Groeslon, Caernarfon, LL54 7ENJul 2001£83,000TerracedFreehold
Clydanedd, Groeslon, Caernarfon, LL54 7EGMar 2001£65,000TerracedFreehold
1, Llwyn Onn, Groeslon, Caernarfon, LL54 7DGDec 2000£36,000Semi-detachedFreehold
4, Cae Bryn, Groeslon, Caernarfon, LL54 7SUAug 2000£58,000Semi-detachedFreehold
Gerallt, Groeslon, Caernarfon, LL54 7TDJun 2000£47,750TerracedFreehold
Nant Y Glyn, Groeslon, Caernarfon, LL54 7DLMay 2000£100,000DetachedFreehold
Ty Bryn Rhosyn, Groeslon, Caernarfon, LL54 7DLMay 2000£28,000DetachedFreehold
Belan View, Groeslon, Caernarfon, LL54 7DWJan 2000£60,000DetachedFreehold
Talyllyn, Groeslon, Caernarfon, LL54 7DLSep 1999£19,000TerracedFreehold
Groesffordd, Groeslon, Caernarfon, LL54 7EDJul 1999£45,000DetachedFreehold
Garth Uchaf, Groeslon, Caernarfon, LL54 7UEJun 1999£97,500DetachedFreehold
Fron Heulog, Groeslon, Caernarfon, LL54 7DNJan 1999£39,000DetachedFreehold
Goleufryn, Groeslon, Caernarfon, LL54 7DPNov 1998£50,000DetachedFreehold
Dalar Wen, Groeslon, Caernarfon, LL54 7TFNov 1998£76,950DetachedFreehold
Penbryn Rhos, Groeslon, Caernarfon, LL54 7TUAug 1998£40,000Semi-detachedFreehold
Cae Iago, Groeslon, Caernarfon, LL54 7DGJul 1998£98,500DetachedFreehold
Plas Mawr, Groeslon, Caernarfon, LL54 7UFJun 1998£124,000DetachedFreehold
Glan Ffynnon, Groeslon, Caernarfon, LL54 7EDApr 1998£80,000DetachedFreehold
Bryn Isaf, Groeslon, Caernarfon, LL54 7DPFeb 1998£53,000DetachedFreehold
Glangors, Groeslon, Caernarfon, LL54 7EDDec 1997£70,000DetachedFreehold
Wern Olau, Groeslon, Caernarfon, LL54 7EHNov 1997£149,500DetachedFreehold
Cartrefle, Groeslon, Caernarfon, LL54 7STOct 1997£37,500Semi-detachedFreehold
Bryn Gorwel, Groeslon, Caernarfon, LL54 7DLJul 1997£78,000DetachedFreehold
12, Cae Bryn, Groeslon, Caernarfon, LL54 7SUJul 1997£42,000Semi-detachedFreehold
Cerrig Llwydion, Groeslon, Caernarfon, LL54 7TUJul 1997£73,000DetachedFreehold
2, Bryn Ennan, Groeslon, Caernarfon, LL54 7EDApr 1997£26,500TerracedFreehold
Argoed, Groeslon, Caernarfon, LL54 7STMar 1997£47,500TerracedFreehold
Hafod Boeth, Groeslon, Caernarfon, LL54 7EWFeb 1997£38,000DetachedFreehold
Cilcoed, Groeslon, Caernarfon, LL54 7SUDec 1996£67,000DetachedFreehold
Bryn Clynnog, Groeslon, Caernarfon, LL54 7TDSep 1996£22,000Semi-detachedFreehold
Tanycoed, Groeslon, Caernarfon, LL54 7EGJul 1996£25,000DetachedFreehold
Yr Hen Siop, Groeslon, Caernarfon, LL54 7DLJul 1996£49,000DetachedFreehold
Tanycoed, Groeslon, Caernarfon, LL54 7EGMar 1996£20,000DetachedFreehold
10, Cae Bryn, Groeslon, Caernarfon, LL54 7SUMar 1996£43,500Semi-detachedFreehold
Llys Ivor, Groeslon, Caernarfon, LL54 7TGFeb 1996£32,000Semi-detachedFreehold
Cartrefle, Groeslon, Caernarfon, LL54 7STOct 1995£32,750Semi-detachedFreehold
Swn Y Nant, Groeslon, Caernarfon, LL54 7SUSep 1995£42,000DetachedFreehold
All street records →

The land

Radon: Testing advised

Higher-radon area (5–10% of homes). Radon can affect long-term health.

Ask for existing test results or use a 3-month test kit, about £50.

BGS / UKHSA · Dec 2022

+ Flood risk very low · Outside coal high-risk area

Not covered here yet: conservation area, listed buildings nearby, article 4 direction, tree protection. Your conveyancer’s local search covers the planning checks.

View building and land map ↑

The building

EPC D

Poor insulation or an EPC E–G rating can mean higher heating bills.

Read the full certificate and ask about insulation and heating costs.

EPC · Oct 2022

Floor area
85 m²
Potential EPC band
B
Age band
England and Wales: 1900-1929
Walls (certificate wording)
Granite or whinstone, as built, no insulation (assumed)
Roof (certificate wording)
Pitched, 200 mm loft insulation
Windows (certificate wording)
Fully double glazed
Heating (certificate wording)
Boiler and radiators, mains gas
Building height
Unavailable

EPC · Oct 2022

Living

Road noise: About 57 dB

Outdoor noise can affect sleep and enjoyment of the home.

Visit at busy times and check the rooms with the windows open.

Welsh Government · 2021

Rail noise: No published level here

Outdoor noise can affect sleep and enjoyment of the home.

Visit at busy times and check the rooms with the windows open.

Welsh Government · 2021

Broadband in the area

Postcode residential gigabit coverage: 52.6%

Full fibre in the local authority: 72.2%

Ofcom · Jan 2026

Schools nearby

Unavailable

DfE GIAS · Nov 2026 · Ofsted · Sep 2026

Area context

Deprivation decile (1 is most deprived within its nation): 7 · Wales 2025

Recorded police incidents: 77

LL54 7ST →

Before you offer

Viewing checklist

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Next steps

Ask a surveyor to confirm Level 2 or Level 3 after reviewing the age, condition and alterations.

Ask the conveyancer about local authority, drainage, environmental, flood and mining searches appropriate to this address.

Compare survey levels →

Questions for the agent

Questions for your surveyor and conveyancer

Ask the surveyor

Which survey level covers this home’s condition, damp, cracks and any alterations?

  • Radon: Ask for existing test results or use a 3-month test kit, about £50.

Ask the conveyancer

Which title, drainage and local searches are needed for this address?

    Sources and licences

    Contains British Geological Survey materials © UKRI 2026

    Radon Potential classification UK Health Security Agency © Crown copyright 2022

    © Environment Agency copyright and/or database right 2026. All rights reserved.

    INSPIRE conditions · Sources and licences

    Other homes on this street