Clos Grehan, Old St Mellons, Cardiff
House prices, sold prices and local information for CF3 6BF.
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At a glance
7 property sales on Clos Grehan, Old St Mellons, Cardiff have been recorded by HM Land Registry since 2024. In the last 12 months 1 home sold here for an average of £429,995. Most sales here are detached homes, which have sold for an average of £428,748. Average sale prices rose from £323,580 in 2024 to £427,498 in 2025 (+32%), though averages on a single street can swing with the mix of homes sold. By property type, sales here have been 57% detached, 43% semi-detached. Recorded sale prices on Clos Grehan range from £265,000 to £435,000. Every home sold here was sold freehold.
House prices on Clos Grehan compared
Average sale price over the last 12 months. Clos Grehan has had fewer than two sales in that time, so it is left out. See all CF3 house prices.
Average sale price by year
Tenure: 100% freehold and 0% leasehold across 7 recorded sales.
Prices by property type
| Type | Sales | Average price | Last sold |
|---|---|---|---|
| Detached | 4 | £428,748 | 27 Jun 2025 |
| Semi-detached | 3 | £321,913 | 29 Oct 2025 |
Sold prices on Clos Grehan
| Address | Date | Price | Type | Tenure |
|---|---|---|---|---|
| 7, Clos Grehan CF3 6BF | 29 Oct 2025 | £429,995 | Semi-detached New build | Freehold |
| 3, Clos Grehan CF3 6BF | 27 Jun 2025 | £415,000 | Detached New build | Freehold |
| 5, Clos Grehan CF3 6BF | 27 Jun 2025 | £429,995 | Detached New build | Freehold |
| 4, Clos Grehan CF3 6BF | 20 Mar 2025 | £435,000 | Detached New build | Freehold |
| 8, Clos Grehan CF3 6BF | 22 Nov 2024 | £434,995 | Detached New build | Freehold |
| 10, Clos Grehan CF3 6BF | 25 Oct 2024 | £265,000 | Semi-detached New build | Freehold |
| 9, Clos Grehan CF3 6BF | 25 Oct 2024 | £270,745 | Semi-detached New build | Freehold |
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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Crime and flood risk near Clos Grehan
Crime
122 crimes were reported within about a mile of Clos Grehan in August 2026.
| Violence & sexual offences | 36 |
| Anti-social behaviour | 27 |
| Public order | 21 |
| Criminal damage & arson | 12 |
| Shoplifting | 6 |
| Other theft | 5 |
Source: data.police.uk. Locations are approximate and cover the surrounding area, not just this street.
Flood risk
Clos Grehan 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 2.6 mi · 51 min walk
- Lisvane & Thornhill station 2.7 mi · 54 min walk
- Heath High Level station 2.9 mi · 59 min walk
Nearest bus stops
- Mortimer Avenue (Mortimer Avenue) 2 min walk
- Rogers Avenue (Church Road) 3 min walk
- Heol Booths 3 (nr, Heol Booths) 4 min walk
- Heol Booths 2 (nr, Heol Booths) 4 min walk
GP surgeries
- Brynderwen Surgery
Crickhowell Road, St Mellons, Cardiff · 1.3 mi - Cyncoed Medical Practice
Dartington Drive, Pontprennau, Cardiff · 1.3 mi - St. Davids Medical Centre
Pontprennau Medical Centr, Pentwyn Drive, Cardiff · 1.4 mi - Willowbrook Surgery
5 Strathy Road, St. Mellons, Cardiff · 1.7 mi
Supermarkets
- Waitrose MSA Waitrose at Cardiff Gate · 0.3 mi
- Spar Spar-St Edeyrns · 0.3 mi
- Asda Superstore Asda Pentwyn Superstore · 0.3 mi
- Waitrose Waitrose Pontprennau Cardiff · 0.9 mi
Pharmacies
- Asda Pharmacy · 0.3 mi
- Pontprennau Pharmacy · 0.8 mi
- Allied Pharmacy Llanrumney · 0.9 mi
Dentists
- The Orthodontic Centre · 0.3 mi
- Pontprennau Dental Care · 0.8 mi
- Dental Surgery · 1.3 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
| Here | Eng & Wales | |
|---|---|---|
| Owned | 88.6% | 62.5% |
| Private rented | 6.3% | 20.3% |
| Social rented | 5.0% | 17.1% |
| Households | 537 |
People
| Here | Eng & Wales | |
|---|---|---|
| Under 15 | 18.0% | 17.4% |
| Aged 15–64 | 72.7% | 64.1% |
| Aged 65+ | 9.2% | 18.6% |
| Residents | 1,225 |
Broadband
| Here | UK | |
|---|---|---|
| Superfast (30Mbit+) | 100% | 95% |
| Ultrafast (300Mbit+) | 100% | 80% |
| Gigabit-capable | 100% | 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
| Here | Eng & Wales | |
|---|---|---|
| 4G indoors, all 4 networks | 98% | 89% |
| 4G indoors, at least 1 network | 100% | 100% |
| 4G outdoors, all 4 networks | 100% | 99% |
| Calls indoors, all 4 networks | 99% | 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 Clos Grehan
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Who lives around Clos Grehan
Ethnic group
| Here | Cardiff | |
|---|---|---|
| White | 78.6% | 79.2% |
| Asian, Asian British or Asian Welsh | 12.6% | 9.7% |
| Mixed or Multiple ethnic groups | 4.1% | 4% |
| Black, Black British, Black Welsh, Caribbean or African | 2.6% | 3.8% |
| Other ethnic group | 2% | 3.3% |
Religion
| Here | Cardiff | |
|---|---|---|
| No religion | 45.2% | 42.9% |
| Christian | 39% | 38.4% |
| Not answered | 5.4% | 6.3% |
| Hindu | 5% | 1.5% |
| Muslim | 4.2% | 9.3% |
| Sikh | 0.6% | 0.4% |
| Other religion | 0.6% | 0.6% |
| Buddhist | 0.1% | 0.5% |
Country of birth
| Here | Cardiff | |
|---|---|---|
| Born in the UK | 84.5% | 83.5% |
| Born outside the UK | 15.5% | 16.5% |
Highest qualification
| Here | Cardiff | |
|---|---|---|
| Level 4 qualifications and above | 56.5% | 40% |
| Level 3 qualifications | 17% | 19.2% |
| Level 2 qualifications | 9% | 11.1% |
| No qualifications | 8.3% | 16.3% |
| Level 1 and entry level qualifications | 4% | 6.9% |
| Apprenticeship | 3.3% | 3.9% |
| Other qualifications | 1.9% | 2.6% |
General health
| Here | Cardiff | |
|---|---|---|
| Very good health | 61.6% | 50.1% |
| Good health | 30.5% | 31.8% |
| Fair health | 6.4% | 12.2% |
| Bad health | 1.1% | 4.5% |
| Very bad health | 0.4% | 1.4% |
Cars or vans per household
| Here | Cardiff | |
|---|---|---|
| 2 cars or vans in household | 43.7% | 24% |
| 1 car or van in household | 41.4% | 43% |
| 3 or more cars or vans in household | 9.9% | 7% |
| No cars or vans in household | 5% | 26% |
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 Clos Grehan
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Noise, radon and ground hazards
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Planning applications near Clos Grehan
Recent planning applications around Clos Grehan from the council's planning register. Choose how far to look:
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Council tax here
Cardiff Band D is £2,013 a year (Band A £1,342). See every band.
Estate agents near Clos Grehan
- Kelvin Francis 2.0 mi
- Hentons 2.0 mi
- Moginie James 2.1 mi
- Northover & Williamson 2.1 mi
- Peter Alan 2.1 mi
Agent locations © OpenStreetMap contributors. More local agents
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