How much is Osborne House, Flat 39, Grosvenor Square, Southampton, SO15 2DA worth?
Estimated value — November 2026
£201,000
Likely range £148,000 – £243,000Four in five similar homes sold within their range when we tested it.
Latest recorded sale February 1995
53%
confidence
Medium
Typically within 12% of the sale price
Property details
Flat / Maisonette
Grosvenor Square · Southampton · SO15 2DA
Energy performance
Mains Gas (Not Community) · EPC 2113-5761-1041-6751-1399 · inspected October 2026
Address
- District
- Southampton
- County
- Southampton
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 | £91,861 | £75,875 – £107,642 |
| 2001 | £110,041 | £90,084 – £128,944 |
| 2002 | £138,571 | £112,547 – £162,441 |
| 2003 | £154,892 | £124,621 – £181,941 |
| 2004 | £171,520 | £136,446 – £202,496 |
| 2005 | £169,100 | £133,216 – £200,214 |
| 2006 | £174,090 | £135,874 – £207,367 |
| 2007 | £184,954 | £144,003 – £221,120 |
| 2008 | £156,633 | £121,453 – £188,335 |
| 2009 | £162,323 | £125,501 – £196,546 |
| 2010 | £163,611 | £126,141 – £198,304 |
| 2011 | £156,096 | £134,101 – £173,526 |
| 2012 | £151,823 | £129,159 – £169,783 |
| 2013 | £157,856 | £132,970 – £177,577 |
| 2014 | £171,553 | £143,071 – £194,123 |
| 2015 | £184,249 | £152,117 – £209,712 |
| 2016 | £196,717 | £160,764 – £225,208 |
| 2017 | £202,895 | £164,115 – £233,626 |
| 2018 | £201,919 | £161,635 – £233,842 |
| 2019 | £194,154 | £153,794 – £226,137 |
| 2020 | £193,315 | £151,511 – £226,443 |
| 2021 | £210,964 | £163,578 – £248,515 |
| 2022 | £222,917 | £170,980 – £264,075 |
| 2023 | £207,095 | £157,111 – £246,705 |
| 2024 | £215,068 | £161,359 – £257,630 |
| 2025 | £203,034 | £150,631 – £244,561 |
| 2026 | £201,000 | £148,000 – £243,000 |
Sale history
Mortgage calculator
£1,079
Estimated monthly repayment
£180,900
Loan amount
£207,460
Total interest
£388,360
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
- Osborne House, Flat 41, Grosvenor Square, Southampton, SO15 2DA£200,000 · 2025£196,000
- Osborne House, Flat 42, Grosvenor Square, Southampton, SO15 2DA£51,950 · 1997£190,000
- Osborne House, Flat 35, Grosvenor Square, Southampton, SO15 2DA£250,000 · 2023£241,000
- Osborne House, Flat 26, Grosvenor Square, Southampton, SO15 2DA£220,000 · 2017£225,000
- Osborne House, Flat 24, Grosvenor Square, Southampton, SO15 2DA£192,500 · 2006£248,000
- Osborne House, Flat 10, Grosvenor Square, Southampton, SO15 2DA£270,000 · 2026£282,000
- Osborne House, Flat 23, Grosvenor Square, Southampton, SO15 2DA£283,000 · 2025£296,000
- Osborne House, Flat 28, Grosvenor Square, Southampton, SO15 2DA£250,000 · 2025£261,000
- Osborne House, Flat 19, Grosvenor Square, Southampton, SO15 2DA£285,000 · 2024£281,000
- Osborne House, Flat 13, Grosvenor Square, Southampton, SO15 2DA£275,000 · 2024£288,000
About this property
Osborne House, Flat 39, Grosvenor Square, Southampton, SO15 2DA is a flat on Grosvenor Square in Southampton. Stede's estimated value for November 2026 is £201,000. Four in five similar homes sold within their likely range when tested; for this property that range is £148,000 to £243,000. It combines their price per m² applied to its floor area (50%), its own last sale brought up to date with the House Price Index (25%) and recent sales of 5 similar homes in the same postcode (25%). The confidence score is 53 out of 100 (medium): estimates like this one are typically within 12% of the eventual sale price.
It last sold in February 1995 for £54,000. The current estimate is 272% higher than that price. The current owner has held it for about 31 years.
Its EPC energy-efficiency rating is band C (77 out of 100). The certificate records a total floor area of 46 m² (495 sq ft). It was lodged in October 2026.
The modelled value is unchanged over the past year and down 5% over the past five years.
Among 10 nearby properties Stede tracks in the SO15 area, estimated values run from £190,000 to £296,000. This flat's £201,000 sits toward the lower end of that range.
Common questions
How much is Osborne House, Flat 39, Grosvenor Square, Southampton, SO15 2DA worth?
Stede estimates Osborne House, Flat 39, Grosvenor Square, Southampton, SO15 2DA is worth £201,000 as of November 2026, within a likely range of £148,000 to £243,000. 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 Osborne House, Flat 39, Grosvenor Square, Southampton, SO15 2DA last sell?
It last sold in February 1995 for £54,000.
What type of property is Osborne House, Flat 39, Grosvenor Square, Southampton, SO15 2DA?
It is recorded as a Flat / Maisonette on Grosvenor Square in the SO15 postcode area.
What is the EPC rating of Osborne House, Flat 39, Grosvenor Square, Southampton, SO15 2DA?
Osborne House, Flat 39, Grosvenor Square, Southampton, SO15 2DA has an EPC energy-efficiency rating of band C (77 out of 100). The certificate records a floor area of 46 m² (495 sq ft). EPC data is published by the Ministry of Housing, Communities & Local Government and reflects the most recent certificate on record.
How reliable is this estimate?
The confidence score is 53 out of 100 (medium). Tested against real sales of similar homes, estimates like this one are typically within 12% 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 their price per m² applied to its floor area (50%), its own last sale brought up to date with the House Price Index (25%) and recent sales of 5 similar homes in the same postcode (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 15,342 real sales of similar homes.
- Recent price per m² in the same postcode, for its 46 m²£154,02950%
- Its sale in February 1995, brought up to today with the House Price Index£225,54425%
- 5 similar homes sold recently in the same postcode£271,22425%
Estimate £201,000, likely £148,000 – £243,000
Read the full methodology and data sources →