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Get started12 Trevor Street is a four-bedroom mid-terrace house in Westminster, London, London (SW7 1DX). It has a recorded floor area of 206 m² (around 2217 sq ft), construction records dating it to before 1900 and council tax band H. Tenure is freehold. The latest certificate (July 2018) shows an E (score 45), well below the UK norm with real room to improve. Earlier certificates rated it D (October 2008); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Average; while wall efficiency dropped from Good to Very Poor and window efficiency dropped from Good to Poor. The recommended improvements would lift it to C (score 72), a 2-band jump.
Held since January 2004 — that's 22 years off the open market, well above the local norm. At 206 m² it's 23.7% smaller than the typical home in the postcode (270 m² median across 7 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £4,072,000 sits 258.1% above the 2004 sale of £1,137,000. On a £-per-square-foot basis, the last sale (£513/sq ft) was about 52.4% below the postcode norm. 5 planning records sit against the property, 4 approved, 0 refused. Past consents include new windows, an extension and a conservatory, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations.
12 Trevor Street sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
12 Trevor Street has a listed-building consent on record — alterations to a listed property are tightly controlled.
1 x Mimosa: reduce upper crown by up to 1m, shaping to create a natural, flowing canopy outline. Retain lower scaffold branches to create future lower crown framework.1 x bay: crown reduce upper crown by up to 0.5m, shaping to create a natural, flowing canopy outline.
Latest sale on 12 Trevor Street was the lowest on Land Registry record across the postcode.
£4,072,000
Modelled from EPC, postcode comparables.
£1,137,000
Recorded with HM Land Registry.
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Detailed AI analysis
On price per m², 12 Trevor Street runs well behind the street norm.
Price per m²
£5,519
Street avg £20,487
Floor Area
206 m²
Street avg 249 m²
Habitable Rooms
6 rooms
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
Knightsbridge Barracks — bus stop.

Daytime· 07:00 – 23:00
57.0dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
More low energy lighting installed
Mechanical ventilation installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
New timber sash window pursuant to Conditions 2 (a) of listed building consent dated 17 January 2006 (RN 05/09119/LBC).
3 more applications for this property
Join to see all planning history.
9 January 2004Most recent
£1,137,000
Median price across the last 5 sales in SW7 1DX: £4,900,000 (2024–2015).
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Every application and decision on record
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Street avg 8 rooms
CO₂ Emissions
11.0 t/year
Street avg 8.5 t/year
SW7 1JL
Closest school
0.9 km
St Joseph's Catholic Primary School. 56 schools nearby.
Night-time· 23:00 – 07:00
49.1dB