Our Data Sources
Flat 1, 21, Siddons Lane has no recent1 records in the the Land Registry and a single entry in the EPC database dated June 2018.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 2 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate Flat 1, 21, Siddons Lane would be worth £681,639, with a potential rental value of £3,591 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £603,738, with a rental value of £3,181 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
Flat 1, 21, Siddons Lane has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 04 Jun 2018.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
Flat 1, 21, Siddons Lane last changed hands on 24th August 1995, selling for £79,750. The transaction was logged as a leasehold flat by HM Land Registry.
That is its only recorded sale since 1995.
- Sold Aug 1995£79,750
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 3 sales of comparable properties within 220 metres of Flat 1, 21, Siddons Lane across the last 2 years.
Most recently, Flat 160B, Chiltern Court, Baker Street, London, NW1 5SS, a leasehold flat, sold at £705,000 on the 30th April 2025.
Read more about house prices in NW1.
- Sold Apr 2025£705,000 | 2 Bed FlatFlat 160B, Chiltern Court, Baker Street, London, NW1 5SSFlat 160B, Chiltern Court, Baker Street, London, NW1 5SS
- Sold Mar 2025£650,000 | 2 Bed FlatFlat 11, 161, Gloucester Place, London, NW1 6DXFlat 11, 161, Gloucester Place, London, NW1 6DX
- Sold Jan 2025£725,000 | 2 Bed FlatFlat 6, 161, Gloucester Place, London, NW1 6DXFlat 6, 161, Gloucester Place, London, NW1 6DX
•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 1, 21, Siddons Lane as the 30th largest and the 6th most expensive of the 45 addresses on Siddons Lane, London, NW1.
Against the NW1 postcode district average, it is £174k less expensive than the typical property.
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Schools Nearby
- 500mSt Edward's Catholic Primary School
- 500mSt Mary's Bryanston Square CofE School
- 600mChrist Church Bentinck CofE Primary School
- 500mThe St Marylebone CofE School
- 1.4kmMarylebone Boys' School
- 2.0kmMaria Fidelis Catholic School FCJ
More reading links
Public Transport Nearby
- 200mBaker Street
- 300mLondon Marylebone
- 300mMarylebone
Risk of Flooding
Environment Agency data suggests this area has a very low risk of flooding.












