Our Data Sources
Flat 30, 15, Portman Square has 31 entries in the Land Registry , most recently in January 2023 and a single entry in the EPC database dated August 2022.
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
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If Flat 30, 15, Portman Square is in very good condition we estimate a sale value of £2,241,965 and a rental value of £8,038 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £1,985,740 and a rental value of £7,120 per month.
Energy Efficiency
Flat 30, 15, Portman Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 12 Aug 2022.
The property is connected to mains gas and has single glazed windows. It is heated using Community scheme.
Sold Prices
According to HM Land Registry, Flat 30, 15, Portman Square was last sold on 19th January 2023 for £2,545,000 and was recorded as a leasehold flat.
The property has had 3 sales since 1995.
Since January 2023, the market for similar properties has dropped by 14.4%.
- Sold Jan 2023£2,545,000
- Sold Feb 2008£850,000
- Sold Nov 2005£400,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 53 sales of properties similar to Flat 30, 15, Portman Square within a radius of 320 metres over the last 2 years.
The most recent example is Flat 66, 15, Portman Square, London, W1H 6LJ, a leasehold flat which sold for £2,700,000 on the 7th October 2025.
Read more about house prices in W1.
- Sold Oct 2025£2,700,000 | 3 Bed FlatFlat 66, 15, Portman Square, London, W1H 6LJFlat 66, 15, Portman Square, London, W1H 6LJ
- Sold Jul 2025£2,100,000 | 3 Bed FlatFlat 54, 15, Portman Square, London, W1H 6LJFlat 54, 15, Portman Square, London, W1H 6LJ
- Sold Jul 2022£2,150,000 | 3 Bed FlatFlat 29, 15, Portman Square, London, W1H 6LJFlat 29, 15, Portman Square, London, W1H 6LJ
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Portman Square, London, W1 has a total of 269 addresses. According to our analysis of all the public data, Flat 30, 15, Portman Square is the 138th largest and the 97th most expensive property on the street.
When compared to the postcode district it is £3k less expensive than the average property in W1.
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Schools Nearby
- St Vincent's Catholic Primary School300 m away
- Hampden Gurney CofE Primary School600 m away
- St Mary's Bryanston Square CofE School700 m away
- The St Marylebone CofE School700 m away
- Marylebone Boys' School1.5 km away
- Maria Fidelis Catholic School FCJ2.2 km away
More reading links
Public Transport Nearby
- Marble Arch|400 m away
- Bond Street|500 m away
- Bond Street (Elizabeth line)|500 m away
Available Internet Speeds
According to recent data from Ofcom, Ultrafast Broadband is available in this area.
According to recent data from Ofcom, Ultrafast Broadband is available in the area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.
