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19 Onslow Square, Kensington And Chelsea, London, SW7 3NJ

15 planning records
Property type
Mid terrace
Floor Ground
Habitable rooms
4
From EPC
Floor area
145 m²
1564 sq ft
Energy rating
F
Score 37
Council tax
Band H
Tenure
Owner Occupied
Overview

About 19 Onslow Square

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

19 Onslow Square is a mid-terrace house in Kensington And Chelsea, London, London (SW7 3NJ). It has a recorded floor area of 145 m² (around 1564 sq ft), construction records dating it to before 1900 and council tax band H. The latest certificate (February 2010) shows an F (score 37), near the bottom of the EPC scale. The recommended improvements would push it to E (score 45). The latest certificate is from February 2010, so improvements made since then won't be reflected.

Across 2003–2016, sale prices on this property compounded at 13.6% per year. Today's modelled estimate of £2,678,000 is 39.1% below the 2016 sale of £4,400,000, running counter to the wider postcode trend, which makes the EPC and condition history especially worth a look. On a £-per-square-foot basis, the last sale (£2,813/sq ft) was about 259.7% above the typical sold price in the postcode. At 145 m² the property is well over the postcode median (110 m² across 35 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. 15 planning records sit against the property, 15 approved, 0 refused. Past consents include tree works, new windows, a basement excavation and subdivision, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations. 10 years since the last transfer (March 2016).

Before you offer

Know exactly what you're buying at 19 Onslow Square

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

Already flagged here

Signs of HMO activity in the areaLarger development activity nearby
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Launch offer · save £5

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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.

19 Onslow Square sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.

EPC Expired

This certificate is over 10 years old and is no longer valid.Expired 02 Feb 2020

EPC Rating

A
B
C
D
E
F
F37
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Poor
CO2 Emissions
11.1 t/year
Occupancy
Owner Occupied
Planning

Planning history

Applications and permits filed against 19 Onslow Square, Kensington And Chelsea, London, SW7 3NJ, sourced from the PlanIt planning register.

Council records show a subdivision application — the property's legal arrangement has been altered.

  1. Nov 2024
    RenovationHeritage
    In report

    Installation of two fire rated doors in basement communal hallway.

    Council
    Thurloe and Smith's Charity
    Documents
    13 docs on file
    Reference
    LB/24/06173
    View planning record
  2. Apr 2021
    Tree WorksTrees
    In report

    FELL 1 x Salix in rear communal gardens.

    Council
    Thurloe and Smith's Charity
    Documents
    6 docs on file
    Reference
    ARB/21/01914
    View planning record
Before you offer

We flagged 2 things worth checking at 19 Onslow Square

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.

  • Signs of HMO activity in the area
  • Larger development activity nearby
£9.99£14.99

30-day money-back guarantee

Price

Sales history & valuation

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

Latest sale on 19 Onslow Square was the highest on Land Registry record across the postcode.

Current estimate

£2,678,000

Modelled from EPC, postcode comparables and a sale-price growth of 13.6% per year over 12 years.

See how we calculated this
Last sold (2016)

£4,400,000

Growth on file: 13.6% per year over 12 years.

Sales timeline

  1. 24 March 2016Most recent

    £4,400,000

    +388.9%over 12 years
  2. 27 October 2003

    £900,000

Median price across the last 5 sales in SW7 3NJ: £2,800,000 (2024–2022).

Before you offerLaunch offer · save £5

Everything we know about 19 Onslow Square, in one report

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

What we flagged

  • Signs of HMO activity in the area
  • Larger development activity nearby
£9.99£14.99
Trusted by UK homebuyers
Preview of the full property report
On the street

Versus other Onslow Square homes

Four headline reads against 35 similar flats on this street, drawn from the latest EPC and Land Registry data.

19 Onslow Square is notably below the street on epc rating.

Price per m²

£30,276

Street avg £16,466

Strongly above

Floor Area

145 m²

Street avg 103 m²

Strongly above

Habitable Rooms

4 rooms

Street avg 4 rooms

Above

CO₂ Emissions

11.1 t/year

Street avg 4.0 t/year

Strongly below
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.

Rail-style transport is unusually close for this postcode.

Crime

10/mo

Rising year-on-year across the wider district.

Nearest stop

0.1 km

Onslow Square — bus stop.

Closest school

0.3 km

Oratory Roman Catholic Primary School. 58 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 SW7 3NJ from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for SW7 3NJ

Daytime· 07:00 – 23:00

58.4dB

Moderate
Night-time road noise heatmap for SW7 3NJ

Night-time· 23:00 – 07:00

48.1dB

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

Everything within walking distance

Schools, transport stops and scenic spots near this property — 88 points of interest in total.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 19 Onslow Square, Kensington And Chelsea, London, SW7 3NJ. Each answer is also embedded as structured data for search engines.