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Bricks&Logic is a trading name of Urban Markets Ltd
Company No. 11113204
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VAT No. GB 287 0845 68
Registered Address: 2 Leman St, London E1 8FA
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11, Seymour Street, Mountain Ash is recorded publicly as a period freehold house across 1,033 ft2 of internal area, sitting on a 132 m2 plot.
Locally, houses of this size normally have 3 bedrooms with a garden.
Our estimate of the sale value of 11, Seymour Street, Mountain Ash is £140,559 and its rental estimate is £831 per month, given the available information and assuming reasonable condition.
Seymour Street, Mountain Ash, CF45 falls within the CF45 postal district.
11, Seymour Street, Mountain Ash has a single entry in the Land Registry from June 2024 and a single entry in the EPC database dated May 2024.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For 11, Seymour Street, Mountain Ash, we estimate a market value of £147,587 and a rental value of £872 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £130,720 and £772 per month respectively.
Over the last year, 11, Seymour Street, Mountain Ash has seen its estimated sale value grow by £3,459 (2.5%) and its estimated rental value climb by £33 per month (3.9%). This results in an estimated gross rental yield of 7.1%.
HM Land Registry records the plot of land for 11, Seymour Street, Mountain Ash as measuring 132 m2.
That makes it the 4th largest plot in the postcode, where 42 of the 44 other houses have recorded plot data.
11, Seymour Street, Mountain Ash has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 29 May 2024.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
The most recent sale of 11, Seymour Street, Mountain Ash completed on 13th June 2024 at £115,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 this is the property's only sale.
Values of comparable properties have risen by 7.8% over the period since June 2024.
Over the past 2 years 3 properties similar to 11, Seymour Street, Mountain Ash have sold within a radius of 550 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 4th February 2026, was Aberpennar Cottage, Dover Street, Mountain Ash, CF45 3HY, a freehold house which sold for £142,500.
Read more about house prices in CF45.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
Of the 44 addresses on Seymour Street, Mountain Ash, CF45, 11, Seymour Street, Mountain Ash comes out as the 3rd largest and the 3rd most expensive in our analysis of the public data.
It is also £17k less expensive than the average property across the CF45 district.
From 11, Seymour Street, Mountain Ash, the nearest station is Mountain Ash, 400 metres away.
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast broadband is available in the area.
The flood risk here is rated very low, based on Environment Agency data.
The recent census recorded whether a resident owned or rented their home.
In the area around 11, Seymour Street, Mountain Ash, 43.2% of property is privately owned outright and 35.2% is privately owned with a mortgage.
The graph below shows how this compares to Wales and the rest of England & Wales.
The recent census recorded the highest level of education achieved by residents in the local area.
In the area around 11, Seymour Street, Mountain Ash, 17.6% of residents are recorded as possessing school level qualifications and 23.9% as possessing degree level qualifications.
The graph below shows how this compares to Wales and the rest of England & Wales.
The most recent census in 2021 recorded the age of all UK residents.
In the area around 11, Seymour Street, Mountain Ash, the average age was 42.5 and the most common age was 57.
The graph below shows how this compares to Wales and the rest of England & Wales
The recent census recorded whether a property was a primary or secondary home for the resident.
In the area around 11, Seymour Street, Mountain Ash, 0.4% of property was a second home.
Comparison figures for Wales and the rest of England & Wales are listed below.
The recent census recorded the number of cars registered in each household.
In the area around 11, Seymour Street, Mountain Ash, there are an average of 1.0 cars per household.
See below for how this compares to Wales and the rest of England & Wales.
