Our Data Sources
Flat 74, 15, Portman Square has no recent1 records in the the Land Registry and a single entry in the EPC database dated March 2022.
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
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For Flat 74, 15, Portman Square, we estimate a market value of £1,654,623 and a rental value of £6,848 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £1,465,523 and £6,065 per month respectively.
Energy Efficiency
Flat 74, 15, Portman Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 21 Mar 2022.
The property is not connected to mains gas and has single glazed windows. It is heated using Community scheme.
Sold Prices
The most recent sale of Flat 74, 15, Portman Square completed on 4th April 1997 at £200,000 and was recorded by HM Land Registry as a leasehold flat.
Since 1995 this is the property's only sale.
- Sold Apr 1997£200,000
Similar Properties Sold Nearby
Over the past 2 years 38 properties similar to Flat 74, 15, Portman Square have sold within a radius of 320 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 24th July 2025, was Flat 2, 3, Montagu Square, London, W1H 2LA, a leasehold flat which sold for £1,270,000.
Read more about house prices in W1.
- Sold Jul 2025£1,270,000 | 3 Bed FlatFlat 2, 3, Montagu Square, London, W1H 2LAFlat 2, 3, Montagu Square, London, W1H 2LA
- Sold Jul 2019£2,050,000 | 3 Bed FlatFlat 82, 15, Portman Square, London, W1H 6LLFlat 82, 15, Portman Square, London, W1H 6LL
- Sold Mar 2017£1,000,000 | 3 Bed FlatFlat 115, 15, Portman Square, London, W1H 6LLFlat 115, 15, Portman Square, London, W1H 6LL
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 269 addresses on Portman Square, London, W1, Flat 74, 15, Portman Square comes out as the 139th largest and the 179th most expensive in our analysis of the public data.
It is also £562k less expensive than the average property across the W1 district.
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
Internet coverage here is poor, based on recent Ofcom data, and connectivity may be weak or unavailable.
According to recent data from Ofcom, Slow/none Broadband is available in the area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
