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Get started23 Clarence Crescent is a four-bedroom detached house in Sidcup (DA14 4DG). It has a recorded floor area of 124 m² (around 1335 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (October 2014) shows an E (score 47), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since December 2008. Between certificates, lighting went from Very Poor to Good; while roof efficiency dropped from Average to Very Poor and window efficiency dropped from Good to Average. The recommended improvements would lift it to C (score 78), a 2-band jump. The latest certificate is from October 2014, so improvements made since then won't be reflected.
Sale prices here have outpaced England HPI: 8.7% per year against 0% for the wider region. Today's modelled estimate of £676,000 sits 53.6% above the 2014 sale of £440,000. On a £-per-square-foot basis, the last sale (£330/sq ft) was about 23.1% above the typical sold price in the postcode. 2 planning records sit against the property, 1 approved, 1 refused. Past consents include a loft conversion, meaningful when judging how the property has evolved. At 124 m² it's 19.4% larger than the typical home in the postcode (104 m² median across 11 EPCs). Last changed hands 12 years ago, in November 2014.
23 Clarence Crescent's carbon output runs well above what efficient homes in the postcode produce.
This certificate is over 10 years old and is no longer valid.Expired 05 Oct 2024
Planning history includes both a loft conversion and an extension — the classic family-home expansion.
Extension: Single storey · Rear of property
First floor rear extension.
Price for 23 Clarence Crescent has grown more than fourfold since the 1996 starting point.
£676,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.7% per year over 18 years.
£440,000
Growth on file: 8.7% per year over 18 years.
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EPC Rating for 23 Clarence Crescent lags the street by a wide margin.
Price per m²
£3,548
Street avg £4,063
Floor Area
124 m²
Street avg 104 m²
Habitable Rooms
6 rooms
Rail-style transport is unusually close for this postcode.
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Station Road / Crescent Road — bus stop.

Daytime· 07:00 – 23:00
52.6dB

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Changes detected from historical EPC data
More low energy lighting installed
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Certificate of Lawfulness (Proposed) for rooms in roofspace incorporating rear dormer extension.
26 November 2014Most recent
£440,000
+191.4%over 15 years17 September 1999
£151,000
+58.9%over 3 years14 June 1996
£95,000
Median price across the last 5 sales in DA14 4DG: £685,000 (2025–2019).
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Energy costs, comparable sales, crime, schools and transport

Street avg 5 rooms
CO₂ Emissions
7.3 t/year
Street avg 5.8 t/year
DA14 4DG
Closest school
0.3 km
Birkbeck Primary School. 29 schools nearby.
Night-time· 23:00 – 07:00
42.8dB