How much is 21 Flat 4, Sion Road, Bath, Bath And North East Somerset, BA1 5SQ worth?
Estimated value — November 2026
£447,000
Likely range £252,000 – £603,000Four in five similar homes sold within their range when we tested it.
Latest recorded sale November 1997
2%
confidence
Low
Typically within 24% of the sale price
Property details
Flat / Maisonette
Sion Road · Bath · BA1 5SQ
Address
- District
- Bath and North East Somerset
- County
- Bath and North East Somerset
Value over time
- Modelled value
- Projected
- Likely range (80%)
- Today's estimate
Drawn through each of this property's recorded sales and ending at today's estimate, with the UK House Price Index for its area and property type filling in the months between. The shaded band is where four in five prices fell when we tested this line against real sales of similar homes; it widens the further a month is from a recorded sale, and today it matches the likely range above.
View as a table
| Year | Modelled value | Likely range |
|---|---|---|
| 2000 | £181,379 | £151,124 – £212,684 |
| 2001 | £202,809 | £165,621 – £239,232 |
| 2002 | £252,142 | £201,900 – £300,793 |
| 2003 | £276,145 | £216,869 – £332,228 |
| 2004 | £313,501 | £242,089 – £378,462 |
| 2005 | £321,156 | £243,925 – £389,625 |
| 2006 | £338,446 | £252,279 – £413,301 |
| 2007 | £357,250 | £260,896 – £440,218 |
| 2008 | £306,963 | £220,051 – £380,746 |
| 2009 | £308,391 | £217,156 – £386,284 |
| 2010 | £313,994 | £218,777 – £396,053 |
| 2011 | £317,549 | £218,203 – £404,335 |
| 2012 | £317,245 | £215,383 – £407,780 |
| 2013 | £335,263 | £253,445 – £400,718 |
| 2014 | £361,314 | £267,656 – £436,241 |
| 2015 | £368,561 | £267,432 – £449,464 |
| 2016 | £403,230 | £286,469 – £496,638 |
| 2017 | £414,797 | £288,393 – £515,920 |
| 2018 | £419,499 | £285,297 – £526,861 |
| 2019 | £405,031 | £269,312 – £513,607 |
| 2020 | £430,405 | £279,652 – £551,007 |
| 2021 | £458,381 | £290,874 – £592,386 |
| 2022 | £483,800 | £299,663 – £631,109 |
| 2023 | £474,756 | £286,858 – £625,075 |
| 2024 | £467,029 | £275,102 – £620,570 |
| 2025 | £468,884 | £269,080 – £628,727 |
| 2026 | £447,000 | £252,000 – £603,000 |
Sale history
Mortgage calculator
£2,399
Estimated monthly repayment
£402,300
Loan amount
£461,367
Total interest
£863,667
Total repayable
A guide only, based on a capital repayment mortgage held at a constant interest rate for the full term. Not a mortgage offer or financial advice.
Related properties
- 21 Flat 3, Sion Road, Bath, Bath And North East Somerset, BA1 5SQ£380,000 · 2006£481,000
- 21 Flat 5, Sion Road, Bath, Bath And North East Somerset, BA1 5SQ£190,000 · 2002£360,000
- Hill House, 21, Flat 1, Sion Road, Bath, Bath And North East Somerset, BA1 5SQ£800,000 · 2015£806,000
- 21 Flat 1, Sion Road, Bath, Bath And North East Somerset, BA1 5SQ£600,000 · 2011£739,000
- Alma, 13, Sion Road, Bath, Bath And North East Somerset, BA1 5SQ£450,000 · 2017£634,000
- 3 Sion Road, Bath, Bath And North East Somerset, BA1 5SQ£65,000 · 1998£632,000
- 15 Sion Road, Bath, Bath And North East Somerset, BA1 5SQ£1,750,000 · 2023£1,707,000
- 9 Sion Road, Bath, Bath And North East Somerset, BA1 5SQ£1,250,000 · 2021£1,267,000
- 19 Sion Road, Bath, Bath And North East Somerset, BA1 5SQ£1,870,000 · 2017£2,526,000
- 1 Sion Road, Bath, Bath And North East Somerset, BA1 5SQ£1,507,500 · 2015£2,110,000
About this property
21 Flat 4, Sion Road, Bath, Bath And North East Somerset, BA1 5SQ is a flat on Sion Road in Bath. Stede's estimated value for November 2026 is £447,000. Four in five similar homes sold within their likely range when tested; for this property that range is £252,000 to £603,000. It combines its own last sale brought up to date with the House Price Index (75%) and recent sales of 97 similar homes in the same postcode sector (25%). The confidence score is 2 out of 100 (low): estimates like this one are typically within 24% of the eventual sale price.
It last sold in November 1997 for £110,000. The current estimate is 306% higher than that price. The current owner has held it for about 29 years.
The modelled value is down 7% over the past year and down 1% over the past five years.
Among 10 nearby properties Stede tracks in the BA1 area, estimated values run from £360,000 to £2,526,000. This flat's £447,000 sits toward the lower end of that range.
Common questions
How much is 21 Flat 4, Sion Road, Bath, Bath And North East Somerset, BA1 5SQ worth?
Stede estimates 21 Flat 4, Sion Road, Bath, Bath And North East Somerset, BA1 5SQ is worth £447,000 as of November 2026, within a likely range of £252,000 to £603,000. The estimate is generated automatically from recorded sale prices of this and similar nearby homes and the UK House Price Index, and is not a formal valuation.
When did 21 Flat 4, Sion Road, Bath, Bath And North East Somerset, BA1 5SQ last sell?
It last sold in November 1997 for £110,000.
What type of property is 21 Flat 4, Sion Road, Bath, Bath And North East Somerset, BA1 5SQ?
It is recorded as a Flat / Maisonette on Sion Road in the BA1 postcode area.
How reliable is this estimate?
The confidence score is 2 out of 100 (low). Tested against real sales of similar homes, estimates like this one are typically within 24% of the sale price, and four in five sold within their likely range. The figure is a data model, not a RICS valuation or Home Report, and should not be used for mortgage or legal decisions.
How does Stede calculate this estimate?
It combines its own last sale brought up to date with the House Price Index (75%) and recent sales of 97 similar homes in the same postcode sector (25%). Each piece of evidence gets the share that proved most accurate when tested against real sales of similar homes, and the same testing sets the likely range and confidence. Full detail is on the methodology page.
How we got this figure
We weighed the evidence below, giving each piece the share that proved most accurate when we tested it against real sales of similar homes. The likely range and confidence come from testing the same method against 2,404 real sales of similar homes.
- Its sale in November 1997, brought up to today with the House Price Index£480,39175%
- 97 similar homes sold recently in the same postcode sector£346,64425%
Estimate £447,000, likely £252,000 – £603,000
Read the full methodology and data sources →