What type of property is Flat 1, 88 Onslow Gardens, SW7 3BS?

Flat 1, 88 Onslow Gardens, SW7 3BS is a 1-bedroom mid-terrace house.

What did Flat 1, 88 Onslow Gardens, SW7 3BS sell for?

Flat 1, 88 Onslow Gardens, SW7 3BS last sold for £4,550,000 in September 2020, around 6 years ago. Land Registry has 4 sales on record going back to £700,000 in April 1997. Source: HM Land Registry.

Has Flat 1, 88 Onslow Gardens, SW7 3BS appreciated in value?

Across 4 sales between April 1997 and September 2020, Flat 1, 88 Onslow Gardens, SW7 3BS rose from £700,000 to £4,550,000, a change of £3,850,000. That works out to roughly +8.3% per year compounded over 23 years. Source: HM Land Registry.

How energy efficient is Flat 1, 88 Onslow Gardens, SW7 3BS?

The current EPC rating for Flat 1, 88 Onslow Gardens, SW7 3BS is C with a score of 73 out of 100, lodged in February 2016. It has improved from a E recorded in October 2008 (2 bands). The assessor estimates the property could reach a B. Source: EPC Register.

What is the floor area of Flat 1, 88 Onslow Gardens, SW7 3BS?

Flat 1, 88 Onslow Gardens, SW7 3BS has a recorded floor area of 224 m² (2,411 sq ft), around 224 m² per bedroom. That makes it about 250% larger than the median EPC-recorded property in SW7 3BS. Source: EPC Register.

How is Flat 1, 88 Onslow Gardens, SW7 3BS heated?

The latest EPC at Flat 1, 88 Onslow Gardens, SW7 3BS records mains gas as the main heating fuel. Source: EPC Register.

What planning history does Flat 1, 88 Onslow Gardens, SW7 3BS have?

Flat 1, 88 Onslow Gardens, SW7 3BS has listed-building consent activity on record, most recently in May 2021 (ref. LB/21/01545). Across all filings there are 3 approved and 0 refused applications. Source: PlanIt planning register.

What council tax band is Flat 1, 88 Onslow Gardens, SW7 3BS?

Flat 1, 88 Onslow Gardens, SW7 3BS is in council tax band F. That sits towards the upper end of the band ladder, typically reflecting larger or higher-value homes.

Where is Flat 1, 88 Onslow Gardens, SW7 3BS located?

Flat 1, 88 Onslow Gardens, SW7 3BS sits in London. It falls within the SW7 postcode district in Greater London Authority.

Is Flat 1, 88 Onslow Gardens, SW7 3BS in a safe area?

Police records around Flat 1, 88 Onslow Gardens, SW7 3BS show an average of 10 reported crimes per month over the last 14 months. Other theft makes up roughly 22% of reports, the most common category. The overall trend is rising (178% versus the prior period). Source: Police UK.

Which schools serve Flat 1, 88 Onslow Gardens, SW7 3BS?

The closest primary school to Flat 1, 88 Onslow Gardens, SW7 3BS is Our Lady of Victories RC Primary School (287m), one of 43 primaries within walking distance. The closest secondary is St. Thomas More Language College (1.1km), with 17 secondaries in the surrounding area.

What transport links are near Flat 1, 88 Onslow Gardens, SW7 3BS?

The closest bus stop to Flat 1, 88 Onslow Gardens, SW7 3BS is Onslow Gardens South Kensington, 165m away. The nearest tram option is South Kensington Station, 474m away.

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Flat 1, 88 Onslow Gardens, London, SW7 3BS

4 sales on record3 planning records

Property type

Mid terrace

Floor Basement

Bedroom

Bathroom

Floor area

224 m²

2411 sq ft

Energy rating

Score 73

Council tax

Band F

Tenure

Owner Occupied

Overview

About Flat 1

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

Flat 1 is a one-bedroom mid-terrace house in London (SW7 3BS). It has a recorded floor area of 224 m² (around 2411 sq ft), construction records dating it to before 1900 and council tax band F. At 224 m² this is the largest unit on EPC record across the building (56–224 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (February 2016) shows a C (score 73). When first surveyed in October 2008 the rating was E, the property has climbed 2 bands since. Between certificates, hot-water efficiency dropped from Good to Average. The recommended improvements would push it to B (score 81). The latest certificate is from February 2016, so improvements made since then won't be reflected.

Across 1997–2020, sale prices on this property compounded at 8.3% per year. Today's modelled estimate of £3,899,000 is 14.3% below the 2020 sale of £4,550,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£1,887/sq ft) was about 142% above the typical sold price in the postcode. At 224 m² the property is well over the postcode median (66 m² across 26 EPCs), placing it in the larger end of the local stock. 3 planning records sit against the property, 3 approved, 0 refused. Past consents include a basement excavation, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations. Last sale on file: £4,550,000 in September 2020. Across the public record there are 4 sales, relatively high churn for a single property.

Before you offer

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

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Signs of HMO activity in the areaLarger development activity nearby

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Valuation

against the asking price

Risks

planning & flood

Sold prices

similar homes nearby

Trends

the local market

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

Bedrooms1
Bathrooms1
Dining roomYes
EnsuiteYes

Outside

Private gardenYes
GarageYes

Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

EPC Expired

This certificate is over 10 years old and is no longer valid.Expired 09 Feb 2026

Current Certificate(1 of 2)

Feb 2016

EPC Rating

C73

Main Heating

Gas

Main Fuel

Gas

Hot Water

Average

Windows

Very Poor

CO2 Emissions

5.5 t/year

Occupancy

Owner Occupied

Property Improvements

Changes detected from historical EPC data

Feb 2016from Oct 2008

EPC improved fromE52toC73

Heating Controls

Prog + StatFull

Heating controls upgraded for better temperature management

Hot Water

Main SystemMain (No Stat)

Hot water system changed

Planning

Planning history

Applications and permits filed against Flat 1, 88 Onslow Gardens, London, SW7 3BS, sourced from the PlanIt planning register.

Flat 1 has multiple listed-building consents on file — alterations need formal heritage approval.

Jul 2021
Conditions
In report
Details required by Condition 2 (submission of details - a) drawings of the existing and proposed canted bay in elevation and section showing the reinstated part (left side) at 1:10 indicating profile of window mouldings, sill, materials and colour/finish, plus retention of historic fabric. To include associated construction methods, b) drawings of the proposed door, with or without lights, at a scale of 1:10, or 1:5 if appropriate, indicating profile of door and window frame mouldings, associated architrave, any door linings etc, type of glazing, materials and colour/finish) of Listed Building consent LB/21/01545 (Internal alterations including replacement of non-original porcelain floor tiles in entrance hall, redecoration, and sub-division of front basement bedroom to allow for relocation of bathroom, additional study. Alteration to bay window to reinstate historic form. Creation of doorway)
Council
Thurloe and Smith's Charity
Documents
4 docs on file
Reference
CON/21/03574
View planning record
May 2021
BasementHeritage
In report
Internal alterations including replacement of non-original porcelain floor tiles in entrance hall, redecoration, and sub-division of front basement bedroom to allow for relocation of bathroom, additional study. Alteration to bay window to reinstate historic form. Creation of doorway.
Council
Thurloe and Smith's Charity
Listed
Documents
13 docs on file
Reference
LB/21/01545
View planning record

Before you offer

We flagged 2 things worth checking at Flat 1

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
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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.

Latest sale on Flat 1 was the highest on Land Registry record across the postcode.

Current estimate

£3,899,000

Modelled from EPC, postcode comparables and a sale-price growth of 8.3% per year over 23 years.

See how we calculated this

Last sold (2020)

£4,550,000

Growth on file: 8.3% per year over 23 years.

Sales timeline

17 September 2020Most recent
£4,550,000
+75.0%over 13 years
26 January 2007
£2,600,000
+55.2%over 4 years
28 March 2002
£1,675,000
+139.3%over 4 years
9 April 1997
£700,000

Median price across the last 5 sales in SW7 3BS: £935,000 (2024–2020).

Nearby sales in SW7 3BS

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Everything we know about Flat 1, 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
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On the street

Versus other Onslow Gardens homes

Four headline reads against 25 similar flats on this street, drawn from the latest EPC and Land Registry data.

Flat 1 outperforms the street on floor area by a wide margin.

Price per m²

£20,313

Street avg £15,844

Above

Floor Area

224 m²

Street avg 78 m²

Strongly above

Habitable Rooms

5 rooms

Street avg 3 rooms

Strongly above

CO₂ Emissions

5.5 t/year

Street avg 2.9 t/year

Strongly below

Comparables

Similar properties nearby

Rising year-on-year across the wider district.

Nearest stop

0.2 km

Onslow Gardens South Kensington — bus stop.

Closest school

0.3 km

Our Lady of Victories RC Primary School. 60 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 3BS from Defra's strategic mapping. The pin marks this postcode's centroid.

Daytime· 07:00 – 23:00

58.0dB

Moderate

Night-time road noise heatmap for SW7 3BS

Night-time· 23:00 – 07:00

47.6dB

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 — 90 points of interest in total.

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about Flat 1, 88 Onslow Gardens, London, SW7 3BS. Each answer is also embedded as structured data for search engines.