Our Data Sources
Flat 23, Osborne House, Southampton has 51 entries in the Land Registry , most recently in December 2025 and a single entry in the EPC database dated July 2017.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 5 out of 5 and is considered of high accuracy.
Price Range & Condition
In very good condition, we estimate Flat 23, Osborne House, Southampton would be worth £270,882, with a potential rental value of £1,215 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £239,924, with a rental value of £1,076 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
Flat 23, Osborne House, Southampton has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 20 Jul 2017.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
Flat 23, Osborne House, Southampton last changed hands on 19th December 2025, selling for £283,000. The transaction was logged as a leasehold flat by HM Land Registry.
In total it has sold 5 times since 1995.
The market for similar properties has dropped by 20.1% since December 2025.
- Sold Dec 2025£283,000
- Sold Nov 2017£255,000
- Sold Jan 2006£190,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 36 sales of comparable properties within 310 metres of Flat 23, Osborne House, Southampton across the last 2 years.
Most recently, Flat 10, Osborne House, Grosvenor Square, Southampton, SO15 2DA, a leasehold flat, sold at £270,000 on the 21st January 2026.
Read more about house prices in SO15.
- Sold Jan 2026£270,000 | 3 Bed FlatFlat 10, Osborne House, Grosvenor Square, Southampton, SO15 2DAFlat 10, Osborne House, Grosvenor Square, Southampton, SO15 2DA
- Sold Oct 2025£250,000 | 3 Bed FlatFlat 28, Osborne House, Grosvenor Square, Southampton, SO15 2DAFlat 28, Osborne House, Grosvenor Square, Southampton, SO15 2DA
- Sold Jun 2024£285,000 | 3 Bed FlatFlat 19, Osborne House, Grosvenor Square, Southampton, SO15 2DAFlat 19, Osborne House, Grosvenor Square, Southampton, SO15 2DA
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks Flat 23, Osborne House, Southampton as the 20th largest and the 19th most expensive of the 54 addresses on Grosvenor Square, Southampton, SO15.
Against the SO15 postcode district average, it is £3k more expensive than the typical property.
More reading links
Schools Nearby
- Springhill Catholic Primary School600 m away
- Banister Primary School600 m away
- Bevois Town Primary School1.0 km away
- St Anne's Catholic School400 m away
- Upper Shirley High School2.3 km away
- Regents Park Community College2.7 km away
More reading links
Public Transport Nearby
- Southampton Central|600 m away
- St Denys|1.8 km away
- Millbrook (Hants)|1.8 km away
Available Internet Speeds
Ofcom's latest figures show poor internet coverage in this area, which may mean weak or no connectivity.
According to recent data from Ofcom, Slow/none Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
