House prices on Upper William Street
Median value — November 2026
£125,000
Modelled from 17 properties Stede tracks in Upper William Street
Market snapshot
£125,000
Median value
£123,118
Average value
1
Sales in the last 12 months
+1%
Change over the past year
Value over time
- Modelled value
- Projected
Modelled month by month from the UK House Price Index, averaged across every property type Stede tracks here.
View as a table
| Year | Modelled value |
|---|---|
| 2000 | £41,630 |
| 2001 | £46,475 |
| 2002 | £58,418 |
| 2003 | £76,327 |
| 2004 | £101,094 |
| 2005 | £107,828 |
| 2006 | £120,168 |
| 2007 | £127,665 |
| 2008 | £109,045 |
| 2009 | £110,744 |
| 2010 | £107,917 |
| 2011 | £105,353 |
| 2012 | £99,414 |
| 2013 | £103,008 |
| 2014 | £108,435 |
| 2015 | £109,933 |
| 2016 | £115,066 |
| 2017 | £121,193 |
| 2018 | £124,855 |
| 2019 | £131,212 |
| 2020 | £142,102 |
| 2021 | £156,452 |
| 2022 | £179,472 |
| 2023 | £170,695 |
| 2024 | £174,842 |
| 2025 | £177,494 |
| 2026 | £178,000 |
There aren't enough recorded sales on Upper William Street alone to model a trend for it, so this line shows Llanelli instead.
Property types
- Mid-terrace house82%£124,000
- Semi-detached house12%£144,000
- Property6%£55,000
Recent sales
- 23 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£125,000 · 2026£125,000
- 21 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£105,000 · 2023£123,000
- 20 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£90,000 · 2023£116,000
- 29 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£125,000 · 2022£149,000
- 26 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£43,000 · 2022£55,000
- 30 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£92,500 · 2018£144,000
- 15 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£67,000 · 2017£103,000
- 17 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£57,000 · 2016£102,000
Addresses in Upper William Street
- 13 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£118,000 · 2007£150,000
- 14 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£25,000 · 2000£119,000
- 15 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£67,000 · 2017£103,000
- 16 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£19,500 · 1999£99,000
- 17 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£57,000 · 2016£102,000
- 18 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£61,750 · 2003£139,000
- 19 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£37,500 · 2001£138,000
- 20 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£90,000 · 2023£116,000
- 21 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£105,000 · 2023£123,000
- 22 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£29,500 · 2000£126,000
- 23 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£125,000 · 2026£125,000
- 24 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£27,000 · 2000£108,000
- 25 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£90,000 · 2007£144,000
- 26 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£43,000 · 2022£55,000
- 28 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£35,000 · 1998£153,000
- 29 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£125,000 · 2022£149,000
- 30 Upper William Street, Llanelli, Carmarthenshire, SA15 1SL£92,500 · 2018£144,000
About this area
Upper William Street, in Llanelli, is a street. Stede can model 17 properties there, from HM Land Registry Price Paid Data and the UK House Price Index.
As of November 2026, Upper William Street has a median estimated value of £125,000 and an average of £123,118.
Modelled values in Upper William Street are +1% over the past year and +12% over five years.
The market here is mostly mid-terrace houses, which make up 82% of the properties Stede tracks in Upper William Street.
1 sale was recorded in Upper William Street over the past 12 months.
Common questions
What is the average house price in Upper William Street?
As of November 2026, the average estimated value is £123,118 and the median is £125,000 across 17 properties Stede tracks in Upper William Street. This is not a formal market valuation.
Are house prices in Upper William Street going up or down?
Modelled values in Upper William Street are +1% over the past year and +12% over five years, based on the UK House Price Index.
What types of property are in Upper William Street?
82% of the properties Stede tracks in Upper William Street are mid-terrace houses. semi-detached houses are next most common, at 12%.
How many properties are in Upper William Street?
Stede can model 17 properties in Upper William Street, with 1 recorded sale in the past 12 months.
How does Stede calculate house prices for Upper William Street?
These figures are modelled from HM Land Registry Price Paid Data and the UK House Price Index — the same sources used for every individual property valuation on Stede. Full detail is on the methodology page.
How we calculate this
These figures are modelled from HM Land Registry Price Paid Data and the UK House Price Index — the same sources behind every individual property valuation on Stede.
Read the full methodology and data sources →