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Get started23 Church Avenue is a six-bedroom detached house in Sidcup (DA14 6BU). It has a recorded floor area of 271 m² (around 2917 sq ft), construction records dating it to before 1900 and council tax band G. The latest certificate (May 2016) shows a D (score 55), a step below the typical UK home. The recommended improvements would push it to C (score 72). The latest certificate is from May 2016, so improvements made since then won't be reflected. Period features are noted in the property record.
Sale prices here have outpaced England HPI: 7.1% per year against 0% for the wider region. Today's modelled estimate of £1,422,000 is 23.7% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£394/sq ft) was about 22.3% above the typical sold price in the postcode. At 271 m² the property is well over the postcode median (160 m² across 16 EPCs), placing it in the larger end of the local stock. 6 bedrooms is on the larger side for this postcode, where 4 is the typical count. 4 planning records sit against the property, 1 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. The record references conservation-area consent, which constrain future alterations. Last sale on file: £1,150,000 in July 2018.
23 Church Avenue'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This certificate is over 10 years old and is no longer valid.Expired 28 May 2026
23 Church Avenue has an approved single-storey rear extension on the planning record.
Works to trees in a Conservation Area; being felling of one Hawthorn tree and three Ash trees; crown reduction of six Ash trees.
Latest sale on 23 Church Avenue was the highest on Land Registry record across the postcode.
£1,422,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.1% per year over 17 years.
£1,150,000
Growth on file: 7.1% per year over 17 years.
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Floor Area for 23 Church Avenue runs comfortably ahead of the street norm.
Price per m²
£4,244
Street avg £3,910
Floor Area
271 m²
Street avg 165 m²
Habitable Rooms
9 rooms
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Church Road (DA14) — bus stop.

Daytime· 07:00 – 23:00
53.6dB

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Extension: Single storey · Rear of property
Certificate of Lawfulness (Proposed) for a single storey rear extension.
2 more applications for this property
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31 July 2018Most recent
£1,150,000
+233.3%over 17 years16 February 2001
£345,000
Median price across the last 5 sales in DA14 6BU: £925,000 (2025–2020).
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Energy costs, comparable sales, crime, schools and transport

Street avg 7 rooms
CO₂ Emissions
12.0 t/year
Street avg 8.6 t/year
DA14 6BA
Closest school
0.5 km
Orchard Primary School. 28 schools nearby.
Night-time· 23:00 – 07:00
44.7dB