William Street

    Ranked 80th of 192 streets in CF45 by average price

    William Street is a residential street in CF45, MOUNTAIN ASH, with 20 properties recorded in the Land Registry. The 3-year average sale price is £131,500, based on 4 transactions. Properties are predominantly terraced houses. The street ranks 80th of 192 streets in CF45 by average price.

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    3Y Avg Price

    £131,500

    4 sales

    Properties

    20

    Sales / Year

    1.6

    5-year average

    Avg £/sq ft

    —

    Rank in CF45

    80th

    of 192 streets

    Last Sale

    £106,000

    Jul 2026

    Street Rankings — CF45

    Streets ranked by 3-year average sale price. Showing positions 76–85 of 192.

    #Street3Y Avg
    76Kingcraft Street£134,817
    77Eva Street£134,167
    78Bailey Street£132,667
    79Glancynon Terrace£131,667
    80William Street£131,500
    81Gertrude Street£130,286
    82Cadwaladr Street£130,000
    82Woodland Terrace£130,000
    84Cilhaul Terrace£129,179
    85Cynon Terrace£129,167

    Property Mix

    Type

    Terraced20 (100%)

    Tenure

    Freehold20 (100%)
    Leasehold0 (0%)

    EPC Ratings

    0 of 20 properties have an EPC record

    A
    0 (0%)
    B
    0 (0%)
    C
    0 (0%)
    D
    0 (0%)
    E
    0 (0%)
    F
    0 (0%)
    G
    0 (0%)

    District Context — CF45

    See wider trends for CF45 →

    CF45 covers communities in the Caerphilly and Merthyr Tydfil area of South Wales, located in the eastern valleys region. It is a residential district with a strong community character, reflecting the area's industrial heritage.

    Average Property Price - CF45

    £147,948

    3

    National percentile

    12 month avg at 30 Sep 2026

    Average Net Household Income - CF45

    £30,631

    9

    National percentile

    2023 census data

    10-Year Annualised Price Growth - CF45

    6.1%

    98

    National percentile

    Estimate at 30 Sep 2026

    10-Year Annualised Rent Growth - CF

    4.9%

    92

    National percentile

    Estimate at 30 Sep 2026

    Properties on William Street

    Streets in CF45

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