Our Data Sources
Flat 41, 15, Portman Square has no records in the the Land Registry and a single entry in the EPC database dated April 2024.
We combine this information with public data 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 41, 15, Portman Square is in very good condition we estimate a sale value of £1,973,451 and a rental value of £7,126 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £1,747,913 and a rental value of £6,311 per month.
Energy Efficiency
Flat 41, 15, Portman Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 02 Apr 2024.
The property is not connected to mains gas and has single glazed windows. It is heated using Community scheme.
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 56 sales of properties similar to Flat 41, 15, Portman Square within a radius of 320 metres over the last 2 years.
The most recent example is Flat 54, 15, Portman Square, London, W1H 6LJ, a leasehold flat which sold for £2,100,000 on the 11th July 2025.
Read more about house prices in W1.
- Sold Jul 2025£2,100,000 | 3 Bed FlatFlat 54, 15, Portman Square, London, W1H 6LJFlat 54, 15, Portman Square, London, W1H 6LJ
- Sold Jan 2023£2,545,000 | 3 Bed FlatFlat 30, 15, Portman Square, London, W1H 6LJFlat 30, 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.
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Location Comparison
Portman Square, London, W1 has a total of 269 addresses. According to our analysis of all the public data, Flat 41, 15, Portman Square is the 145th largest and the 108th most expensive property on the street.
When compared to the postcode district it is £259k 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.
