Flat 6, 25 Belsize Park, London, NW3 4DU is a leasehold flat built before 1900. The property offers approximately 689 square feet of living space and is situated on the 3rd floor of a 4-storey building. In this location, apartments of similar size usually have two bedrooms.

The estimated current market value of the property is £807,065 , which equates to approximately £1,172 per square foot. It was last sold on 13 Oct 2004 for £394,000. Since then, the value has increased by £413,065, representing a 104.8% increase, or approximately 4.8% per year.

The current estimated value of £807,065 is:

  • 26.4% lower than the average property price on Belsize Park
  • 28.0% lower than the average in the NW3 4DU postcode area
  • and 0.3% lower than the average price for London as a whole

This property has had 2 EPC inspections with recorded tenure information. It was recorded once as rented and once as owner-occupied, indicating a change in how it was used over time.

At the most recent EPC inspection on 5 January 2026, the property was recorded as rented.

View sold house prices in NW3 4DU

Building approximate location

About Property

Type
Flat
Built
before 1900
Interior Size
689 sq ft
Tenure
Leasehold
Floor level
3rd floor of 4
Price (estimate)
£807,065
Price Per sq ft (estimate)
£1,172
Bedroom Count (estimate)
2 bedrooms

EPC Summary

Flat 6, 25 Belsize Park, London, Camden, Greater London, NW3 4DU has an Energy Performance Certificate (EPC) rating of C, based on the latest assessment carried out on 5 Jan 2026.

This property uses a gas-fired boiler and radiators, connected to the mains gas supply, as its main heating source. Hot water is provided from main heating system. The property has multiple glazing throughout.

The previous EPC assessment was conducted on 14 Jan 2016, when the property was rated D. Since then, the rating has improved to C, with the energy efficiency score increasing by 25%.

Since the previous assessment, several changes were observed:

  • The hot water system was changed from from main system, no cylinder thermostat to from main system, with its energy efficiency improving from poor to good.
  • The windows were upgraded from full secondary glazing to multiple glazing throughout.
  • The lighting was updated from low energy lighting in 21% of fixed outlets to excellent lighting efficiency, with efficiency improving from poor to very good.
Heating Type
Boiler and radiators, mains gas
Good
Hot Water
From main system
Good
Walls
Solid brick, as built, no insulation (assumed)
Very Poor
Windows
Multiple glazing throughout
Poor
Lighting
Excellent lighting efficiency
Very Good

Compared to NW3 4DU

23 rd / 42
Price Rank
28% lower than average
20 th / 27
Size Rank
33% smaller than average
7 th / 27
Price Per Sq FT Rank
8% higher than average

Sale History

Today
£807,065
streetscan.co.uk estimate
+105 %
13 Oct 2004
£394,000
Leasehold
+23.1 %
6 Mar 2001
£320,000
Leasehold

Flood Risk for this Property

Flood risk from rivers and the sea
Very low flood risk
Flood risk from surface water
High flood risk
Surface water flood hazard
High

* Results are based on Environment Agency flood risk mapping for the property UPRN where available. They are indicative and should not be treated as a site-specific flood survey.

Flood risk from rivers and the sea

This property has very low flood risk from rivers and the sea.

River and sea flooding includes flooding caused by overflowing rivers, estuaries, tidal waters and coastal surges.

Flood risk from surface water

This property has high surface water flood risk.

Surface water flooding can happen when heavy rainfall overwhelms drains, roads, gardens or other hard surfaces.

Flood depth indicators

Rivers and Sea
  • 0.2m depth No mapped risk
  • 0.3m depth No mapped risk
  • 0.6m depth No mapped risk
  • 0.9m depth No mapped risk
  • 1.2m depth No mapped risk
Surface Water
  • 0.2m depth High
  • 0.3m depth Medium
  • 0.6m depth Very low
  • 0.9m depth Very low
  • 1.2m depth Very low

Area Insights

Similar Properties Sold Nearby

rooms: 3
size: 775 sq ft
sale price: £755,000
sale date: 29 Nov 2024
rooms: 3
size: 710 sq ft
sale price: £615,000
sale date: 21 Dec 2023
rooms: 2
size: 603 sq ft
sale price: £635,000
sale date: 30 Aug 2018
rooms: 3
size: 635 sq ft
sale price: £960,000
sale date: 24 Nov 2017
rooms: 3
size: 710 sq ft
sale price: £860,000
sale date: 10 Jun 2015

Data Sources

The property at Flat 6, 25 Belsize Park, London, NW3 4DU appears two times in HM Land Registry records, with the latest transaction recorded on 13 Oct 2004. It also has two Energy Performance Certificate (EPC) records, the earliest dating back to 5 Jan 2026. We use this information to estimate the property's characteristics, flood risk profile and current market value.

This website uses public sector information from:

These datasets are licensed under the Open Government Licence v3.0 .

StreetScan.co.uk is not affiliated with, endorsed by, or associated with HM Land Registry, DESNZ, MHCLG, Defra or the Environment Agency.


Disclaimer: StreetScan.co.uk makes all reasonable efforts to ensure that the information provided on this website is current and accurate. However, no warranties or representations are made regarding its completeness, accuracy, suitability or reliability. Property values, flood risk assessments and other derived information are estimates based on publicly available datasets and should not be relied upon as professional, legal, surveying, environmental, financial or insurance advice. StreetScan.co.uk expressly disclaims all liability for any loss, damage, cost or expense arising directly or indirectly from the use of, or reliance upon, information provided on this website.