3Y Avg Price
£764,364
11 sales
Properties
104
97 freehold · 7 leasehold
Sales / Year
5.0
5-year average
Avg £/sq ft
£240
£2,583/m²
Rank in CF15
10th
of 201 streets
Last Sale
£840,000
May 2026
Price History
Every recorded sale on this street, coloured by property type.
Last 10 Sales
183 total recorded
HOLLY HOUSE Heol Isaf
Detached
£840,000
May 2026
36 Heol Isaf
Semi-Detached
£1,075,000
Apr 2026
HAFOD Y DDINAS Heol Isaf
Detached
£995,000
Mar 2026
106 Heol Isaf
Detached
£758,050
Sept 2025
40 Heol Isaf
Semi-Detached
£1,300,000
Aug 2025
90 Heol Isaf
Semi-Detached
£645,000
Jan 2025
77 Heol Isaf
Semi-Detached
£600,000
Oct 2024
60 Heol Isaf
Semi-Detached
£585,000
Aug 2024
1A Heol Isaf
Detached
£794,950
Jul 2024
FLAT 3, HARLECH HOUSE Heol Isaf
Flat/Maisonette
£190,000
Mar 2024
Street Rankings — CF15
Streets ranked by 3-year average sale price. Showing positions 6–15 of 201.
| # | Street | 3Y Avg |
|---|---|---|
| 6 | Mountain Road | £800,000 |
| 6 | Green Place | £800,000 |
| 8 | Penywaun | £787,500 |
| 9 | Heol Rufus | £775,000 |
| 10 | Heol Isaf | £764,364 |
| 11 | Bryn Briallu | £728,500 |
| 12 | Pilgrim Close | £705,000 |
| 13 | Heol Roald Dahl | £700,000 |
| 14 | Clos Cefn Bychan | £680,000 |
| 15 | Greenacre | £670,000 |
Property Mix
Type
Tenure
EPC Ratings
9 of 104 properties have an EPC record
Avg floor area: 1,841 sq ft (171 m²)
District Context — CF15
CF15 covers the Caerphilly area in South Wales, situated north of Cardiff in the South Wales valleys. It is a long-established residential district with strong community ties and good transport links to the wider region.
Average Property Price - CF15
£368,149
62
National percentile
12 month avg at 30 Sep 2026
Average Net Household Income - CF15
£47,390
82
National percentile
2023 census data
10-Year Annualised Price Growth - CF15
3.9%
78
National percentile
Estimate at 30 Sep 2026
10-Year Annualised Rent Growth - CF
4.9%
92
National percentile
Estimate at 30 Sep 2026