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17c, Belsize Square, London, NW3 4HT

3 planning records
Property type
Semi-detached
Floor -1
Habitable rooms
3
From EPC
Floor area
121 m²
1302 sq ft
Energy rating
C
Score 69
Tenure
Private Rental
Overview

About 17c

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

17c is a semi-detached house in London (NW3 4HT). It has a recorded floor area of 121 m² (around 1302 sq ft) and construction records dating it to 1900-1929. At 121 m² this is the 42nd smallest of 52 units on EPC record in the building, where floor areas span 39–211 m². The building's EPC ratings span F to C, with this unit at the top. The latest certificate (November 2022) shows a C (score 69), just inside the C band. When first surveyed in February 2009 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Very Poor to Poor and lighting went from Very Poor to Very Good.

At 121 m² it's 29.2% larger than the typical home in the postcode (94 m² median across 74 EPCs). 3 planning records sit against the property, 0 approved, 0 refused.

Before you offer

Know exactly what you're buying at 17c

Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.

Already flagged here

Larger development activity nearby
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Valuation

against the asking price

Risks

planning & flood

Sold prices

similar homes nearby

Trends

the local market

Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Current Certificate(1 of 8)
Nov 2022

EPC Rating

A
B
C
C69
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Poor
CO2 Emissions
4.0 t/year
Occupancy
Rented

Property Improvements

Changes detected from historical EPC data

Apr 2012from Mar 2010
EPC improved fromE53toD59
Jun 2016from Apr 2012
EPC improved fromD59toC72
Windows
SinglePartial Double

Single glazing replaced with double or better glazing

Jun 2022from Jun 2016
EPC improved fromC72toD66
Hot Water
Main SystemMain (No Stat)

Hot water system changed

Low Energy Lighting
0%93%

More low energy lighting installed

Sept 2022from Jun 2022
Heating Controls
Prog + StatFull

Heating controls upgraded for better temperature management

Hot Water
Main (No Stat)Main System

Hot water system upgraded

Low Energy Lighting
93%53%

Low energy lighting percentage decreased

Nov 2022from Sept 2022
EPC improved fromD59toC69
Heating Controls
FullThermostat

Heating controls changed

Windows
SinglePartial Double

Single glazing replaced with double or better glazing

Walls
Very PoorPoor

Wall insulation improved

Low Energy Lighting
53%100%

More low energy lighting installed

Planning

Planning history

Applications and permits filed against 17c, Belsize Square, London, NW3 4HT, sourced from the PlanIt planning register.

Planning history at 17c is exclusively tree-management applications — typical for a property with mature trees on or near the plot.

  1. Jul 2020
    Tree WorksTrees
    In report

    REAR GARDEN: 1 x Ash (T1) - Reduce crown by 30%, 2.5m of height and 2m width. 1 x Sycamore (T2) - Reduce crown by 30%, 3m of height and 2m width.

    Documents
    4 docs on file
    Reference
    2020/2417/T
    View planning record
  2. Feb 2004
    Tree WorksTrees
    In report

    REAR GARDEN 1 x Laburnum - fell.

    Documents
    2 docs on file
    Reference
    2004/0289/T
    View planning record
Before you offer

We flagged 1 thing worth checking at 17c

Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.

  • Larger development activity nearby
£14.99

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Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

17c has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.

Current estimate

£1,377,000

Modelled from EPC, postcode comparables.

See how we calculated this

No sales recorded with HM Land Registry

That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.

Median price across the last 5 sales in NW3 4HT: £1,000,000 (2024–2022).

Before you offer

Everything we know about 17c, in one report

What it's really worth, what could be wrong, and the planning, sales and area data in full.

What we flagged

  • Larger development activity nearby
£14.99
Trusted by UK homebuyers
Preview of the full property report
On the street

Versus other Belsize Square homes

Four headline reads against 71 similar flats on this street, drawn from the latest EPC and Land Registry data.

Floor Area for 17c runs comfortably ahead of the street norm.

EPC Rating

69 (C)

Street avg 65 (D)

Above

Floor Area

121 m²

Street avg 92 m²

Strongly above

CO₂ Emissions

4.0 t/year

Street avg 3.7 t/year

Below

Habitable Rooms

3 rooms

Street avg 3 rooms

On par
Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£1.2m

1 Lancaster Drive, Camden

NW3 4EY

3 bed2 bath
£1.2m

1 Strathray Gardens, Camden

NW3 4PA

3 bed2 bath
£1.6m

1 Steeles Mews North, Camden

NW3 4RJ

2 bed
£1.8m

1 Avenue House, Belsize Park Gardens, Camden

NW3 4LA

£1.0m

1 Sussex House, Glenilla Road

NW3 4AR

3 bed1 bath
£1.9m

1 Steeles Mews South, Camden

NW3 4SJ

4 bed2 bath
£1.0m

1 Lambolle Road, Camden

NW3 4HS

£892k

1 Beaumont Walk, Camden

NW3 4SW

Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the London district page.
Full London report

Rail-style transport is unusually close for this postcode.

Crime

6/mo

Rising year-on-year across the wider district.

Nearest stop

0.1 km

Belsize Square — bus stop.

Closest school

0.5 km

Holy Trinity CofE Primary School, NW3. 70 schools nearby.

Go deeper on the local area

The full report breaks down crime, transport links, schools and air quality in depth.

Noise

Road noise across the postcode

Modelled day and night-time noise levels around NW3 4HT from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for NW3 4HT

Daytime· 07:00 – 23:00

53.9dB

Low
Night-time road noise heatmap for NW3 4HT

Night-time· 23:00 – 07:00

42.9dB

Low
55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 17c, Belsize Square, London, NW3 4HT. Each answer is also embedded as structured data for search engines.