Flat 7, 3 Onslow Gardens, London, SW7 3LX
About Flat 7
Flat 7 is a mid-terrace house in London (SW7 3LX). It has a recorded floor area of 229 m² (around 2465 sq ft), construction records dating it to before 1900 and council tax band G. The latest certificate (May 2013) shows a C (score 71). The recommended improvements would push it to B (score 82). The latest certificate is from May 2013, so improvements made since then won't be reflected.
At 229 m² the property is well over the postcode median (127 m² across 11 EPCs), placing it in the larger end of the local stock. 9 planning records sit against the property, 6 approved, 3 refused. The record references listed-building consent, which constrain future alterations.
Know exactly what you're buying at Flat 7
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Launch offer · save £5
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
Flat 7's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 09 May 2023
EPC Rating
Planning history
Flat 7 has multiple listed-building consents on file — alterations need formal heritage approval.
- Nov 2018ConditionsIn report
Details required by condition 3f (any new decorative plasterwork) of listed building consent LB/17/05661 (Alterations, including replacement of sanitaryware, fixtures and fittings, reinstatement of original fireplaces, addition of chimney pieces, adaptations of internal partitions, doors, floor and ceiling finishes and renewal of mechanical, electrical, plumbing and drainage services)
- Council
- Thurloe and Smith's Charity
Listed- Documents
- 8 docs on file
- Reference
- CON/18/06088
- Sept 2018ConditionsIn report
Details required by condition 3a (Chimney pieces / fireplace openings) of listed building consent 17/05661 (Alterations, including replacement of sanitaryware, fixtures and fittings, reinstatement of original fireplaces, addition of chimney pieces, adaptations of internal partitions, doors, floor and ceiling finishes and renewal of mechanical, electrical, plumbing and drainage services)
- Council
- Thurloe and Smith's Charity
Listed- Documents
- 7 docs on file
- Reference
- CON/18/04740
We flagged 2 things worth checking at Flat 7
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
30-day money-back guarantee
Sales history & valuation
Flat 7 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£3,827,000
Modelled from EPC, postcode comparables.
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 SW7 3LX: £900,000 (2022–2011).
Nearby sales in SW7 3LX
Flat 5, 1 Onslow Gardens, London, SW7 3LX
Sold Jan 2022
£313,750Flat 7, 1 Onslow Gardens, London, SW7 3LX
Sold Dec 2021
£1,500,000Flat 2, 1 Onslow Gardens, London, SW7 3LX
Sold Sept 2017
£12,000,000Flat 4, 1 Onslow Gardens, London, SW7 3LX
Sold Nov 2011
£900,000Flat 3, 4 Onslow Gardens, London, SW7 3LX
Sold Jul 2002
£395,000
Everything we know about Flat 7, 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
Versus other Onslow Gardens homes
On habitable rooms, Flat 7 stands well clear of the street.
EPC Rating
71 (C)
Street avg 65 (D)
Floor Area
229 m²
Street avg 135 m²
CO₂ Emissions
6.3 t/year
Street avg 4.9 t/year
Habitable Rooms
8 rooms
Street avg 4 rooms
Similar properties nearby
13a, Flat 1, Cranley Gardens, Kensington And Chelsea
SW7 3BB
13a, Flat 3, Cranley Gardens
SW7 3BB
11a, Flat 1a, Cranley Place
SW7 3AE
21 23, Flat 1, Cranley Gardens
SW7 3BD
21 23, Flat 12, Cranley Gardens
SW7 3BD
1a, Flat 1, Cranley Gardens
SW7 3BB
1a, Flat 2, Cranley Gardens
SW7 3BB
1a, Flat 3, Cranley Gardens
SW7 3BB
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
10/mo
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. 61 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
59.1dB
Night-time· 23:00 – 07:00
48.8dB