Mary Street, Trethomas, Caerphilly

House prices, sold prices and local information for CF83 8HN.

Average price (last 12 months)
£179,000
2 sales
Average price (since 2016)
£130,167
32 sales
Price range
£22k – £188k
lowest to highest sale
Last sale
23 Mar 2026
CF83 8HN

At a glance

House prices£179k average29% below the Caerphilly average Crime73 reportedWithin about a mile, latest month Flood riskNo flood warning areasFrom rivers or the sea Nearest station42 min walkEnerglyn & Churchill Park station Ultrafast broadband100% of homesNational average 80%

32 property sales on Mary Street, Trethomas, Caerphilly have been recorded by HM Land Registry since 2016. In the last 12 months 2 homes sold here for an average of £179,000. Most sales here are terraced homes, which have sold for an average of £130,167. Average sale prices rose from £71,900 in 2016 to £179,000 in 2026 (+149%), though averages on a single street can swing with the mix of homes sold. That is 29% below the Caerphilly average of £251,590 over the same period. 8 homes here have sold more than once since 2016; 8 of them sold for more the second time.

House prices on Mary Street compared

Mary Street£179,000
CF83 postcode area£251,590
Caerphilly£251,590
England & Wales£356,718

Average sale price over the last 12 months. See all CF83 house prices.

Average sale price by year

2016: £71,900 (3 sales)2016£72k2017: £110,317 (6 sales)2017£110k2018: £114,667 (3 sales)2018£115k2019: £115,500 (1 sales)2019£116k2020: £138,750 (1 sales)2020£139k2021: £133,900 (5 sales)2021£134k2022: £137,250 (2 sales)2022£137k2023: £156,000 (4 sales)2023£156k2024: £164,500 (3 sales)2024£165k2025: £135,000 (2 sales)2025£135k2026: £179,000 (2 sales)2026£179k

Prices by property type

TypeSalesAverage priceLast sold
Terraced32£130,16723 Mar 2026

Sold prices on Mary Street

AddressDatePriceTypeTenure
42, Mary Street CF83 8HN 23 Mar 2026£188,000 TerracedFreehold
44, Mary Street CF83 8HN 23 Feb 2026£170,000 TerracedFreehold
42, Mary Street CF83 8HN 2 Sep 2025£129,000 TerracedFreehold
47, Mary Street CF83 8HN 30 Apr 2025£141,000 TerracedFreehold
20, Mary Street CF83 8HN 30 Sep 2024£163,500 TerracedFreehold
30, Mary Street CF83 8HN 8 Mar 2024£180,000 TerracedFreehold
16, Mary Street CF83 8HN 13 Feb 2024£145,000 TerracedFreehold
6, Mary Street CF83 8HN 1 Feb 2024£150,000 TerracedFreehold
41, Mary Street CF83 8HN 29 Sep 2023£150,000 TerracedFreehold
33, Mary Street CF83 8HN 20 Sep 2023£140,000 TerracedFreehold
19, Mary Street CF83 8HN 21 Aug 2023£187,500 TerracedFreehold
39, Mary Street CF83 8HN 11 Apr 2023£146,500 TerracedFreehold
19, Mary Street CF83 8HN 21 Oct 2022£136,000 TerracedFreehold
31, Mary Street CF83 8HN 20 Apr 2022£138,500 TerracedFreehold
10, Mary Street CF83 8HN 8 Mar 2022£127,000 TerracedFreehold
49, Mary Street CF83 8HN 19 Nov 2021£115,000 TerracedFreehold
50, Mary Street CF83 8HN 24 Sep 2021£158,000 TerracedFreehold
20, Mary Street CF83 8HN 12 Aug 2021£125,000 TerracedFreehold
37, Mary Street CF83 8HN 25 Jun 2021£151,500 TerracedFreehold
29, Mary Street CF83 8HN 1 Apr 2021£120,000 TerracedFreehold
43, Mary Street CF83 8HN 11 Dec 2020£138,750 TerracedFreehold
25, Mary Street CF83 8HN 4 Oct 2019£115,500 TerracedFreehold
7, Mary Street CF83 8HN 14 Dec 2018£109,000 TerracedFreehold
22, Mary Street CF83 8HN 7 Dec 2018£125,000 TerracedFreehold
6, Mary Street CF83 8HN 7 Dec 2018£110,000 TerracedFreehold
43, Mary Street CF83 8HN 13 Oct 2017£124,950 TerracedFreehold
11, Mary Street CF83 8HN 19 Sep 2017£102,000 TerracedFreehold
44, Mary Street CF83 8HN 23 Aug 2017£110,000 TerracedFreehold
9, Mary Street CF83 8HN 24 Mar 2017£124,950 TerracedFreehold
24, Mary Street CF83 8HN 16 Feb 2017£102,000 TerracedFreehold
41, Mary Street CF83 8HN 13 Feb 2017£100,000 TerracedFreehold
28, Mary Street CF83 8HN 31 Jan 2017£100,000 TerracedFreehold
42, Mary Street CF83 8HN 25 Nov 2016£21,700 TerracedFreehold
17, Mary Street CF83 8HN 19 Oct 2016£80,000 TerracedFreehold
40, Mary Street CF83 8HN 24 Mar 2016£110,000 TerracedFreehold
37, Mary Street CF83 8HN 29 Feb 2016£114,000 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.

Sale history: homes sold more than once

AddressSalesChange
42, Mary Street £21,700 (Nov 2016) → £129,000 (Sep 2025) → £188,000 (Mar 2026) +766%
over 9 yrs
44, Mary Street £110,000 (Aug 2017) → £170,000 (Feb 2026) +55%
over 9 yrs
20, Mary Street £125,000 (Aug 2021) → £163,500 (Sep 2024) +31%
over 3 yrs
6, Mary Street £110,000 (Dec 2018) → £150,000 (Feb 2024) +36%
over 5 yrs
41, Mary Street £100,000 (Feb 2017) → £150,000 (Sep 2023) +50%
over 7 yrs
19, Mary Street £136,000 (Oct 2022) → £187,500 (Aug 2023) +38%
over under a year
37, Mary Street £114,000 (Feb 2016) → £151,500 (Jun 2021) +33%
over 5 yrs
43, Mary Street £124,950 (Oct 2017) → £138,750 (Dec 2020) +11%
over 3 yrs

Buying on Mary Street?

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Crime and flood risk near Mary Street

Crime

73 crimes were reported within about a mile of Mary Street in August 2026.

Anti-social behaviour25
Violence & sexual offences21
Criminal damage & arson7
Public order7
Other theft4
Vehicle crime3

Source: data.police.uk. Locations are approximate and cover the surrounding area, not just this street.

Flood risk

Mary Street is not in or near any Environment Agency flood warning or alert area.

Flood warning areas cover places at risk from rivers and the sea. Surface water risk isn't included. Check the long-term flood risk for a postcode on GOV.UK.

Getting around and local GPs

Train stations

  • Energlyn & Churchill Park station 2.1 mi · 42 min walk
  • Caerphilly station 2.1 mi · 43 min walk
  • Llanbradach station 2.3 mi · 46 min walk

Nearest bus stops

  • Trethomas Clinic (adj, Standard Street) 2 min walk
  • The Square (at, Newport Road) 2 min walk
  • Navigation Street (after, Llanfabon Drive) 2 min walk
  • Redbrook Avenue (opp junct, Newport Road) 2 min walk

GP surgeries

  • Ty Bryn Surgery
    The Bryn, Trethomas, Caerphilly · 0.4 mi
  • Court House Medical Centre
    Heol Bro Wen, Caerphilly · 1.7 mi
  • Market Street Practice
    Tonyfelin Medical Centre, Tonyfelin Surgery, Caerphilly · 1.8 mi
  • The Village Surgery
    Llanbradach Centre For Health, 12 Pencerrig Street, Caerphilly · 2.3 mi

Sources: Department for Transport (NaPTAN) and NHS England practice data. Walking times are estimates from straight-line distance.

Area profile

Homes

HereEng & Wales
Owned67.9%62.5%
Private rented17.1%20.3%
Social rented15.0%17.1%
Households655

People

HereEng & Wales
Under 1520.3%17.4%
Aged 15–6459.2%64.1%
Aged 65+20.5%18.6%
Residents1,529

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.

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.

Nearby streets in CF83

See all streets in Caerphilly All streets in CF83