A complete guide to property investment in Mountain Ash.
Last updated: 18 September 2025
Mountain Ash offers investors a rare mix of affordability and growth, with property values showing capital growth over 1 year of 6.0% and an impressive annualised growth over 3 years of 9.3%. Rents are strong, with average rental yields of 7.2%, and the median price per square foot of £138 per sq ft keeps entry costs accessible compared to other parts of Britain. The market moves at a decent pace, with properties spending a median of 43 days before being snapped up. Households here are more likely to be families, sitting in the 76th percentile, and there’s a robust private rental sector, in the 71st percentile nationally.
Median price per sq ft
£138 / sq ft
Average rental yield
7.2%
Capital growth (1y)
6.0%
Sales in past year
149
* Property stats calculated for last full calendar year (2024).
Live prices in Mountain Ash, Wales
* Extreme prices clipped for legibility
Median price
£129,995
25% of properties below...
£115,000
75% of properties below...
£160,000
Most expensive property
£720,000
Live listings
85
Median days on market
43
Looking ahead, Mountain Ash seems set to continue attracting investors who value both yield and growth. The combination of strong rental yields of 7.2% and annualised capital growth of 9.3% make it hard to ignore, especially for those seeking value in a market where affordability is becoming rare. The market’s liquidity, reflected in 149 annual sales and quick 43 days, points to solid demand from both buyers and renters.
However, the area’s socioeconomic profile suggests investors should keep an eye on employment trends and tenant quality. While the fundamentals remain attractive, future growth may depend on broader economic improvements and continued interest from families and renters priced out of neighbouring regions.
Average yield (%)
* 2025 data for YTD
Median price per sq ft (£/sq ft)
* 2025 data for YTD
Investment properties in Mountain Ash, Wales
£125,000 - Offers in Region of
3 bedroom end of terrace house for sale
Aberdare Road, Mountain Ash, CF47 3...
£90,000
4 bedroom detached house for sale
greenfield Terrace, cefn pennar
£120,000
3 bedroom terraced house for sale
Lyle Street, Mountain Ash
Buyers have some negotiation leverage, but not much.
• Median discount: £4,000
• 1 in 4 properties sell at > £7,500 below asking
• 1 in 10 properties sell at > £10,000 below asking
In percentage terms:
• Median discount of 2.4%
• 25% of properties discounted by > 5.2%
• 10% of properties discounted by > 7.6%
Top postcodes for rental yield and (annualised) capital growth
GeoGlider calculates property investment stats by blending official and proprietary datasets. Here's a quick overview of key sources and how we use them:
HM Land Registry: Property transaction and sold-price records for England & Wales used to calculate historical capital growth, price levels and comparables.
Office for National Statistics (ONS): Demographic and economic indicators for the UK, including Census 2021, supporting area profiling and market context.
Ordnance Survey: Authoritative UK geospatial data powering accurate boundaries, roads and terrain for mapping and spatial analysis.
GeoProp: Our proprietary AI pipeline that processes millions of property listings to extract rich features and live market signals.
Department for Levelling Up, Housing & Communities: Energy Performance Certificate (EPC) scores and property floor areas.
HM Revenue & Customs (HMRC): Household income and employment data to understand local affordability and economic conditions.
Data is updated continuously, matched across sources and rigorously validated.