Heol Islwyn, Gorseinon

18 homes · mostly 1967-1975 mid-terrace · SA4 4LJ

17 of 18 graded homes sit below their potential — on average 1.3 grades of headroom.

D
Street Grade
The most common grade among this street’s current certificates. Average score 66.3.

Grade distribution

Current certificates, 18 graded homes.

8
9
1
ABCDEFG

Price statistics

HM Land Registry price paid data since 1995.

£125,495
average, last 10 years
57
sales since 1995
£142,000
latest sale, 10 October 2025
13 · 10 October 2025£142,000
17 · 21 March 2025£140,000
25 · 29 November 2024£165,000
7 · 17 December 2021£134,000
11 · 23 July 2021£104,950

Homes on Heol Islwyn

Pick an address to see its Report Card.

AddressGrade → potential
2 Heol IslwynD→ C3 Heol IslwynC→ B4 Heol IslwynE→ B5 Heol IslwynC→ C8 Heol IslwynD→ C10 Heol IslwynD→ C11 Heol IslwynC→ B13 Heol IslwynC→ B15 Heol IslwynD→ B17 Heol IslwynC→ B19 Heol IslwynC→ B21 Heol IslwynD→ B25 Heol IslwynC→ B27 Heol IslwynC→ B29 Heol IslwynD→ C31 Heol IslwynD→ C39 Heol IslwynD→ C41 Heol IslwynD→ B

Other streets in SA4

DAlexandra RoadDFrampton RoadDWest StreetDSt Teilo StreetBFern DriveBBeauchamp WalkBNant Gors-FawrDGlebe Road