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Mortimer Avenue, Old St Mellons, Cardiff

MyStreetCheck free street report: Mortimer Avenue, Old St Mellons, Cardiff · 30 October 2026 · www.mystreetcheck.co.uk/cardiff-cardiff/mortimer-avenue/

House prices, sold prices and local information for CF3 6YG, CF3 6YF.

Average price (last 12 months)
£277,500
6 sales
Average price (since 2018)
£251,113
155 sales
Price range
£100k – £403k
lowest to highest sale
Last sale
17 Aug 2026
CF3 6YF

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At a glance

House prices£278k average12% below the Cardiff average Crime153 reportedWithin about a mile, latest month Flood riskNo flood warning areasFrom rivers or the sea Nearest station49 min walkLlanishen station Ultrafast broadband94% of homesNational average 80% Freehold or leaseholdAll freeholdAcross 166 Land Registry sales Planning applicationsChecking…Within 500 m, last 90 days

155 property sales on Mortimer Avenue, Old St Mellons, Cardiff have been recorded by HM Land Registry since 2018. In the last 12 months 6 homes sold here for an average of £277,500. Most sales here are semi-detached homes, which have sold for an average of £245,774. Average sale prices rose from £240,228 in 2018 to £275,000 in 2026 (+14%), though averages on a single street can swing with the mix of homes sold. That is 12% below the Cardiff average of £315,449 over the same period. 50 homes here have sold more than once since 2018; 49 of them sold for more the second time. By property type, sales here have been 51% semi-detached, 26% detached, 23% terraced. Recorded sale prices on Mortimer Avenue range from £100,000 to £402,500. Every home sold here was sold freehold. Of 702 streets in Cardiff with at least two sales in the last year, Mortimer Avenue ranks 346th for average price.

House prices on Mortimer Avenue compared

Mortimer Avenue£277,500
CF3 postcode area£287,744
Cardiff£315,449
England & Wales£358,701

Average sale price over the last 12 months. See all CF3 house prices.

Average sale price by year

2018: £240,228 (69 sales)2018£240k2019: £243,386 (18 sales)2019£243k2020: £226,371 (16 sales)2020£226k2021: £249,248 (14 sales)2021£249k2022: £275,682 (11 sales)2022£276k2023: £309,350 (4 sales)2023£309k2024: £274,833 (9 sales)2024£275k2025: £303,994 (9 sales)2025£304k2026: £275,000 (5 sales)2026£275k

Tenure: 100% freehold and 0% leasehold across 166 recorded sales.

Prices by property type

TypeSalesAverage priceLast sold
Semi-detached79£245,77417 Aug 2026
Detached41£299,35024 Jul 2025
Terraced35£206,65517 Jul 2026

Sold prices on Mortimer Avenue

AddressDatePriceTypeTenure
184, Mortimer Avenue CF3 6YF 17 Aug 2026£300,000 Semi-detachedFreehold
98, Mortimer Avenue CF3 6YF 24 Jul 2026£275,000 Semi-detachedFreehold
104, Mortimer Avenue CF3 6YF 17 Jul 2026£246,000 TerracedFreehold
185, Mortimer Avenue CF3 6YG 27 Mar 2026£299,000 Semi-detachedFreehold
139, Mortimer Avenue CF3 6YG 16 Jan 2026£255,000 Semi-detachedFreehold
167, Mortimer Avenue CF3 6YG 21 Nov 2025£285,000 Semi-detachedFreehold
186, Mortimer Avenue CF3 6YF 21 Nov 2025£290,000 Semi-detachedFreehold
117, Mortimer Avenue CF3 6YG 26 Sep 2025£287,500 TerracedFreehold
166, Mortimer Avenue CF3 6YF 4 Aug 2025£289,950 Semi-detachedFreehold
162, Mortimer Avenue CF3 6YF 24 Jul 2025£374,000 DetachedFreehold
179, Mortimer Avenue CF3 6YG 24 Jul 2025£290,000 Semi-detachedFreehold
193, Mortimer Avenue CF3 6YG 18 Jul 2025£285,000 Semi-detachedFreehold
93, Mortimer Avenue CF3 6YG 21 May 2025£307,000 Semi-detachedFreehold
118, Mortimer Avenue CF3 6YF 30 Apr 2025£340,000 DetachedFreehold
162, Mortimer Avenue CF3 6YF 22 Apr 2025£365,000 DetachedFreehold
201, Mortimer Avenue CF3 6YG 6 Mar 2025£315,000 Semi-detachedFreehold
181, Mortimer Avenue CF3 6YG 14 Feb 2025£317,500 Semi-detachedFreehold
106, Mortimer Avenue CF3 6YF 13 Feb 2025£240,000 TerracedFreehold
175, Mortimer Avenue CF3 6YG 16 Dec 2024£260,000 Semi-detachedFreehold
197, Mortimer Avenue CF3 6YG 16 Dec 2024£285,000 Semi-detachedFreehold
142, Mortimer Avenue CF3 6YF 10 Dec 2024£325,000 DetachedFreehold
114, Mortimer Avenue CF3 6YF 29 Nov 2024£100,000 DetachedFreehold
176, Mortimer Avenue CF3 6YF 4 Nov 2024£306,000 Semi-detachedFreehold
185, Mortimer Avenue CF3 6YG 31 Oct 2024£260,000 Semi-detachedFreehold
126, Mortimer Avenue CF3 6YF 16 Oct 2024£285,000 Semi-detachedFreehold
187, Mortimer Avenue CF3 6YG 7 Oct 2024£265,000 Semi-detachedFreehold
101, Mortimer Avenue CF3 6YG 16 Sep 2024£402,500 DetachedFreehold
121, Mortimer Avenue CF3 6YG 12 Jul 2024£220,000 TerracedFreehold
158, Mortimer Avenue CF3 6YF 28 Jun 2024£270,000 Semi-detachedFreehold
175, Mortimer Avenue CF3 6YG 26 Apr 2024£260,000 Semi-detachedFreehold
185, Mortimer Avenue CF3 6YG 26 Apr 2024£260,000 Semi-detachedFreehold
116, Mortimer Avenue CF3 6YF 27 Mar 2024£335,000 DetachedFreehold
177, Mortimer Avenue CF3 6YG 26 Mar 2024£275,000 Semi-detachedFreehold
95, Mortimer Avenue CF3 6YG 30 Nov 2023£357,500 DetachedFreehold
199, Mortimer Avenue CF3 6YG 13 May 2023£289,950 Semi-detachedFreehold
110, Mortimer Avenue CF3 6YF 13 Apr 2023£220,000 TerracedFreehold
140, Mortimer Avenue CF3 6YF 15 Feb 2023£369,950 DetachedFreehold
136, Mortimer Avenue CF3 6YF 16 Dec 2022£340,000 DetachedFreehold
171, Mortimer Avenue CF3 6YG 25 Nov 2022£300,000 Semi-detachedFreehold
139, Mortimer Avenue CF3 6YG 28 Oct 2022£248,000 Semi-detachedFreehold
188, Mortimer Avenue CF3 6YF 20 Sep 2022£290,000 Semi-detachedFreehold
132, Mortimer Avenue CF3 6YF 29 Jul 2022£270,000 Semi-detachedFreehold
151, Mortimer Avenue CF3 6YG 28 Jul 2022£312,000 Semi-detachedFreehold
115, Mortimer Avenue CF3 6YG 8 Jul 2022£227,500 TerracedFreehold
190, Mortimer Avenue CF3 6YF 29 Jun 2022£280,000 Semi-detachedFreehold
134, Mortimer Avenue CF3 6YF 10 Jun 2022£270,000 Semi-detachedFreehold
128, Mortimer Avenue CF3 6YF 25 Feb 2022£262,000 Semi-detachedFreehold
143, Mortimer Avenue CF3 6YG 27 Jan 2022£233,000 TerracedFreehold
160, Mortimer Avenue CF3 6YF 8 Dec 2021£260,000 Semi-detachedFreehold
108, Mortimer Avenue CF3 6YF 26 Nov 2021£218,500 TerracedFreehold
1234

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
184, Mortimer Avenue £224,995 (Aug 2019) → £300,000 (Aug 2026) +33%
over 7 yrs
98, Mortimer Avenue £219,995 (Sep 2018) → £275,000 (Jul 2026) +25%
over 8 yrs
104, Mortimer Avenue £178,500 (Sep 2018) → £246,000 (Jul 2026) +38%
over 8 yrs
185, Mortimer Avenue £217,995 (Nov 2020) → £260,000 (Apr 2024) → £299,000 (Mar 2026) +37%
over 5 yrs
139, Mortimer Avenue £189,995 (Oct 2018) → £248,000 (Oct 2022) → £255,000 (Jan 2026) +34%
over 7 yrs
167, Mortimer Avenue £213,995 (Mar 2020) → £285,000 (Nov 2025) +33%
over 6 yrs
186, Mortimer Avenue £230,000 (Aug 2019) → £290,000 (Nov 2025) +26%
over 6 yrs
117, Mortimer Avenue £214,995 (Oct 2018) → £232,000 (Mar 2021) → £287,500 (Sep 2025) +34%
over 7 yrs
166, Mortimer Avenue £219,995 (Jun 2018) → £289,950 (Aug 2025) +32%
over 7 yrs
162, Mortimer Avenue £328,000 (Jun 2018) → £365,000 (Apr 2025) → £374,000 (Jul 2025) +14%
over 7 yrs
179, Mortimer Avenue £214,995 (Jun 2020) → £290,000 (Jul 2025) +35%
over 5 yrs
193, Mortimer Avenue £217,995 (Jul 2020) → £285,000 (Jul 2025) +31%
over 5 yrs
93, Mortimer Avenue £250,000 (Jun 2018) → £307,000 (May 2025) +23%
over 7 yrs
118, Mortimer Avenue £282,500 (Jun 2018) → £340,000 (Apr 2025) +20%
over 7 yrs
201, Mortimer Avenue £254,995 (Jun 2020) → £315,000 (Mar 2025) +24%
over 5 yrs
181, Mortimer Avenue £250,000 (Mar 2020) → £317,500 (Feb 2025) +27%
over 5 yrs
106, Mortimer Avenue £189,995 (Jun 2018) → £240,000 (Feb 2025) +26%
over 7 yrs
197, Mortimer Avenue £219,995 (Dec 2019) → £285,000 (Dec 2024) +30%
over 5 yrs
142, Mortimer Avenue £282,500 (Jun 2018) → £325,000 (Dec 2024) +15%
over 6 yrs
114, Mortimer Avenue £264,995 (Jun 2018) → £296,000 (Jul 2021) → £100,000 (Nov 2024) -62%
over 6 yrs
176, Mortimer Avenue £253,000 (Dec 2020) → £306,000 (Nov 2024) +21%
over 4 yrs
126, Mortimer Avenue £224,995 (May 2018) → £285,000 (Oct 2024) +27%
over 6 yrs
187, Mortimer Avenue £217,995 (Jul 2020) → £265,000 (Oct 2024) +22%
over 4 yrs
101, Mortimer Avenue £324,995 (Aug 2018) → £402,500 (Sep 2024) +24%
over 6 yrs
121, Mortimer Avenue £176,500 (Sep 2018) → £193,000 (Apr 2021) → £220,000 (Jul 2024) +25%
over 6 yrs
158, Mortimer Avenue £214,995 (Dec 2018) → £270,000 (Jun 2024) +26%
over 6 yrs
175, Mortimer Avenue £214,995 (Sep 2020) → £260,000 (Apr 2024) +21%
over 4 yrs
116, Mortimer Avenue £264,995 (Jun 2018) → £335,000 (Mar 2024) +26%
over 6 yrs
177, Mortimer Avenue £214,995 (Jul 2020) → £275,000 (Mar 2024) +28%
over 4 yrs
95, Mortimer Avenue £265,000 (Mar 2019) → £357,500 (Nov 2023) +35%
over 5 yrs

Showing the 30 most recent of 50 homes with more than one sale.

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Crime and flood risk near Mortimer Avenue

Crime

153 crimes were reported within about a mile of Mortimer Avenue in August 2026.

Violence & sexual offences43
Anti-social behaviour37
Public order27
Criminal damage & arson17
Vehicle crime7
Shoplifting6

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

Flood risk

Mortimer Avenue 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, shops and health

Train stations

  • Llanishen station 2.5 mi · 49 min walk
  • Lisvane & Thornhill station 2.7 mi · 54 min walk
  • Heath High Level station 2.8 mi · 56 min walk

Nearest bus stops

  • Heol Booths 2 (nr, Heol Booths) 1 min walk
  • Heol Booths 3 (nr, Heol Booths) 1 min walk
  • Heol Booths 1 (nr, Heol Booths) 2 min walk
  • Mortimer Avenue (Mortimer Avenue) 2 min walk

GP surgeries

  • Cyncoed Medical Practice
    Dartington Drive, Pontprennau, Cardiff · 1.2 mi
  • St. Davids Medical Centre
    Pontprennau Medical Centr, Pentwyn Drive, Cardiff · 1.2 mi
  • Brynderwen Surgery
    Crickhowell Road, St Mellons, Cardiff · 1.2 mi
  • Willowbrook Surgery
    5 Strathy Road, St. Mellons, Cardiff · 1.6 mi

Supermarkets

  • Spar Spar-St Edeyrns · 0.2 mi
  • Asda Superstore Asda Pentwyn Superstore · 0.2 mi
  • Waitrose MSA Waitrose at Cardiff Gate · 0.3 mi
  • Waitrose Waitrose Pontprennau Cardiff · 0.7 mi

Pharmacies

  • Asda Pharmacy · 0.2 mi
  • Allied Pharmacy Llanrumney · 0.7 mi
  • Pontprennau Pharmacy · 0.7 mi

Dentists

  • The Orthodontic Centre · 0.3 mi
  • Pontprennau Dental Care · 0.7 mi
  • Dental Surgery · 1.2 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
Owned69.7%62.5%
Private rented16.2%20.3%
Social rented14.1%17.1%
Households597

People

HereEng & Wales
Under 1527.1%17.4%
Aged 15–6469.3%64.1%
Aged 65+3.6%18.6%
Residents1,437

Broadband

HereUK
Superfast (30Mbit+)94%95%
Ultrafast (300Mbit+)94%80%
Gigabit-capable94%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 networks98%89%
4G indoors, at least 1 network100%100%
4G outdoors, all 4 networks100%99%
Calls indoors, all 4 networks99%92%

Share of homes across Cardiff 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 Mortimer Avenue

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Who lives around Mortimer Avenue

Ethnic group

HereCardiff
White72.3%79.2%
Asian, Asian British or Asian Welsh14.5%9.7%
Mixed or Multiple ethnic groups7.9%4%
Black, Black British, Black Welsh, Caribbean or African2.9%3.8%
Other ethnic group2.4%3.3%

Religion

HereCardiff
No religion43.3%42.9%
Christian34.1%38.4%
Not answered8.1%6.3%
Muslim7.5%9.3%
Hindu5.5%1.5%
Sikh0.6%0.4%
Other religion0.4%0.6%
Jewish0.3%–

Country of birth

HereCardiff
Born in the UK82.5%83.5%
Born outside the UK17.5%16.5%

Highest qualification

HereCardiff
Level 4 qualifications and above57.5%40%
Level 3 qualifications16.4%19.2%
Level 2 qualifications10.9%11.1%
No qualifications7.1%16.3%
Level 1 and entry level qualifications4.9%6.9%
Apprenticeship2.3%3.9%
Other qualifications0.9%2.6%

General health

HereCardiff
Very good health63.9%50.1%
Good health26.6%31.8%
Fair health7.5%12.2%
Bad health1.7%4.5%
Very bad health0.3%1.4%

Cars or vans per household

HereCardiff
1 car or van in household40.8%43%
2 cars or vans in household39.3%24%
No cars or vans in household14.1%26%
3 or more cars or vans in household5.9%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 Cardiff.

Planning and heritage near Mortimer Avenue

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Planning applications near Mortimer Avenue

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

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Estate agents near Mortimer Avenue

  • Northover & Williamson 1.9 mi
  • Peter Alan 1.9 mi
  • Kelvin Francis 1.9 mi
  • Hentons 1.9 mi
  • Moginie James 1.9 mi

Agent locations © OpenStreetMap contributors. More local agents

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