« Sold prices in Mountain Ash

Sold prices on William Street, Mountain Ash

19 recorded sales · 12 properties · 2017–2026

Homes on William Street, Mountain Ash have a median sold price of £105,000 across 19 recorded sales since 2017. Terraced homes are the most common here, at a median of £105,000. That's 62% below the England & Wales average of around £280,000. Within Mountain Ash as a whole it is in line with the town (average sold price across all recorded sales: £102,425). Properties here have changed hands 1.6 times on average. The most recent sale was £106,000 in Jul 2026; the highest on record was £167,000 in 2024. Recorded prices are roughly up 104% between the earliest and most recent sales.
£105,000
Median sold price
£104,819
Average
£48,000–£167,000
Range
19
Sales recorded

William Street falls in postcode district CF45 — see sold prices across the wider area.

Properties on William Street

£106,000
31, WILLIAM STREET, MOUNTAIN ASH, RHONDDA CYNON TAFF, CF45 4RW
TerracedJul 2026
£155,000
23, WILLIAM STREET, MOUNTAIN ASH, RHONDDA CYNON TAFF, CF45 4RW
TerracedMay 2025
£98,000
20, WILLIAM STREET, MOUNTAIN ASH, RHONDDA CYNON TAFF, CF45 4RW
TerracedSept 2024
£167,000
29, WILLIAM STREET, MOUNTAIN ASH, RHONDDA CYNON TAFF, CF45 4RW
TerracedSept 2024
£159,995
10, WILLIAM STREET, MOUNTAIN ASH, RHONDDA CYNON TAFF, CF45 4RW
TerracedApr 2023
£103,618
8, WILLIAM STREET, MOUNTAIN ASH, RHONDDA CYNON TAFF, CF45 4RW
TerracedDec 2022
£144,950
19, WILLIAM STREET, MOUNTAIN ASH, RHONDDA CYNON TAFF, CF45 4RW
TerracedNov 2022
£130,000
24, WILLIAM STREET, MOUNTAIN ASH, RHONDDA CYNON TAFF, CF45 4RW
TerracedSept 2021
£72,500
27, WILLIAM STREET, MOUNTAIN ASH, RHONDDA CYNON TAFF, CF45 4RW
TerracedOct 2020
£105,000
16, WILLIAM STREET, MOUNTAIN ASH, RHONDDA CYNON TAFF, CF45 4RW
TerracedMay 2019
£128,500
5, WILLIAM STREET, MOUNTAIN ASH, RHONDDA CYNON TAFF, CF45 4RW
TerracedOct 2018
£60,000
22, WILLIAM STREET, MOUNTAIN ASH, RHONDDA CYNON TAFF, CF45 4RW
TerracedJul 2018

Other streets in Mountain Ash

How these figures are calculated. Every sale on this page is a completed transaction from HM Land Registry Price Paid data, registered between 2017 and 2026. We show the median rather than the average wherever there are enough sales, so one unusually high or low sale doesn’t distort the picture. Sales take time to be registered, so the most recent months are provisional. Prices are as recorded and are not adjusted for inflation; a street’s figures reflect the mix of what actually sold there.