Our Data Sources
Flat 94, 15, Portman Square has no recent1 records in the the Land Registry and a single entry in the EPC database dated September 2021.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate Flat 94, 15, Portman Square would be worth £1,978,607, with a potential rental value of £8,015 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £1,752,480, with a rental value of £7,099 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
Flat 94, 15, Portman Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 02 Sep 2021.
The property is connected to mains gas and has single glazed windows. It is heated using Community scheme.
Sold Prices
Flat 94, 15, Portman Square last changed hands on 7th September 1998, selling for £235,000. The transaction was logged as a leasehold flat by HM Land Registry.
That is its only recorded sale since 1995.
- Sold Sep 1998£235,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 50 sales of comparable properties within 320 metres of Flat 94, 15, Portman Square across the last 2 years.
Most recently, Flat 54, 15, Portman Square, London, W1H 6LJ, a leasehold flat, sold at £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 Nov 2023£975,000 | 3 Bed FlatFlat 41, 15, Portman Square, London, W1H 6LJFlat 41, 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
•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 94, 15, Portman Square as the 89th largest and the 106th most expensive of the 269 addresses on Portman Square, London, W1.
Against the W1 postcode district average, it is £254k less expensive than the typical property.
More reading links
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
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.
