The Mountain Ash Grade Report

5,633 graded homes · updated from the EPC register

The average Mountain Ash home is a D — and 66% of the town's homes could reach a B or better.

D
Town Grade
The most common grade among current certificates in Mountain Ash. Average score 63.6.

Grade distribution

Share of Mountain Ash homes per grade, current certificates.

22
361
1639
2584
861
124
42
ABCDEFG

Grade by construction era

Older homes grade lower — and have the most headroom.

Pre-1900
D59
1900–1929
D60.8
1930–1949
D65.7
1950–1966
D68.8
1967–1982
C69.4
1983–1995
C69.5
1996 onwards
C79.8

Best-graded streets

Streets with at least 10 graded homes.

1Trem Y MynyddCF45 · 13 homesB2Ffordd Y GlowyrCF45 · 66 homesB3Cwrt AbergorciCF45 · 12 homesB4Ger Yr AfonCF45 · 12 homesB5Edward StreetCF45 · 19 homesA

Most upgraded streets

Biggest average score gain from regrades, last 3 years.

1Bailey StreetCF45 · 5 homes+26.4 pts2Harris TerraceCF45 · 7 homes+24.7 pts3Oakland StreetCF45 · 7 homes+22.3 pts4Dover StreetCF45 · 7 homes+21.6 pts5King StreetCF45 · 5 homes+20.8 pts

Mountain Ash by district

Most common grade per postcode district.

DCF45
E
0.5% of Mountain Ash rental stock sits below the MEES line.
Rentals need a minimum grade by law — E today, direction of travel C. 1,837 rented homes on record.
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What grade is your Mountain Ash home?

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