21, Caswell Street
21, Caswell Street
Description & Estimates







21, Caswell Street, Llanelli is recorded publicly as a period freehold house across 678 ft2 of internal area, sitting on a 283 m2 plot.
Locally, houses of this size normally have 3 bedrooms with a garden.
Our estimate of the sale value of 21, Caswell Street, Llanelli is £139,945 and its rental estimate is £822 per month, given the available information and assuming reasonable condition.
Caswell Street, Llanelli, SA15 falls within the SA15 postal district.
Our Data Sources
21, Caswell Street, Llanelli has a single entry in the Land Registry from January 2007 and a single entry in the EPC database dated January 2015.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 4 out of 5 and is considered of high accuracy.
Price Range & Condition
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 21, Caswell Street, Llanelli, we estimate a market value of £146,943 and a rental value of £863 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £130,149 and £765 per month respectively.
Recent Market Change
Over the last year, 21, Caswell Street, Llanelli has seen its estimated sale value climb by £3,200 (2.3%) and its estimated rental value rise by £37 per month (4.5%). This results in an estimated gross rental yield of 7.1%.
Plot Size
HM Land Registry records the plot of land for 21, Caswell Street, Llanelli as measuring 283 m2.
That makes it the 14th largest plot in the postcode, where all 31 other houses have recorded plot data.
Energy Efficiency
21, Caswell Street, Llanelli has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 15 Jan 2015.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of 21, Caswell Street, Llanelli completed on 19th January 2007 at £57,000 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 71.3% over the period since January 2007.
- Sold Jan 2007£57,000
Similar Properties Sold Nearby
Over the past 2 years 3 properties similar to 21, Caswell Street, Llanelli have sold within a radius of 500 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 4th December 2025, was 61, Caswell Street, Llanelli, SA15 1RE, a freehold house which sold for £99,500.
Read more about house prices in SA15.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 53 addresses on Caswell Street, Llanelli, SA15, 21, Caswell Street, Llanelli comes out as the 51st largest and the 33rd most expensive in our analysis of the public data.
It is also £51k less expensive than the average property across the SA15 district.
More reading links
Schools Nearby
Public Transport Nearby
From 21, Caswell Street, Llanelli, the nearest station is Llanelli, 500 metres away.
- 500mLlanelli
- 3.8kmBynea
- 5.5kmLlangennech
Available Internet Speeds
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast broadband is available in the area.
Risk of Flooding
The flood risk here is rated very low, based on Environment Agency data.

