Our Data Sources
Flat 111, 15, Portman Square has no recent1 records in the the Land Registry and a single entry in the EPC database dated January 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
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 111, 15, Portman Square is in very good condition we estimate a sale value of £1,530,583 and a rental value of £6,454 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £1,355,659 and a rental value of £5,716 per month.
Energy Efficiency
Flat 111, 15, Portman Square has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 06 Jan 2021.
The property is not connected to mains gas and has single glazed windows. It is heated using Room heaters, electric.
Sold Prices
According to HM Land Registry, Flat 111, 15, Portman Square was last sold on 27th October 2006 for £617,000 and was recorded as a leasehold flat.
The property has had 3 sales since 1995.
- Sold Oct 2006£617,000
- Sold Jul 2004£525,000
- Sold Jun 1999£320,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 32 sales of properties similar to Flat 111, 15, Portman Square within a radius of 320 metres over the last 2 years.
The most recent example is Flat 2, 3, Montagu Square, London, W1H 2LA, a leasehold flat which sold for £1,270,000 on the 24th July 2025.
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 Nov 2024£1,795,000 | 3 Bed FlatFlat 7, 1, Bryanston Square, London, W1H 2DHFlat 7, 1, Bryanston Square, London, W1H 2DH
- Sold Jun 2023£1,750,000 | 2 Bed FlatFlat 8, 1, Bryanston Square, London, W1H 2DHFlat 8, 1, Bryanston Square, London, W1H 2DH
•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 111, 15, Portman Square is the 149th largest and the 198th most expensive property on the street.
When compared to the postcode district it is £680k less expensive than the average property in W1.
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
According to recent data from Ofcom, there is poor internet coverage in this area which may result in poor or no internet connectivity.
According to recent data from Ofcom, Slow/none 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.
