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Get started15 Birchwood Avenue is a four-bedroom detached house in Sidcup (DA14 4JY). It has a recorded floor area of 222 m² (around 2390 sq ft), construction records dating it to 1900-1929 and council tax band G. Tenure is freehold. The latest certificate (June 2023) shows an F (score 33), near the bottom of the EPC scale. The recommended improvements would lift it to D (score 67), a 2-band jump. Our model identifies extension potential, subject to local planning policy.
At 222 m² the property is well over the postcode median (147 m² across 7 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs). 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Most recent transfer: December 2023 at £1,115,000.
15 Birchwood Avenue's carbon output runs well above what efficient homes in the postcode produce.
Council records include a part-single-part-two-storey side and rear extension at 15 Birchwood Avenue.
Extension: Single storey · Side and rear of property
First floor side and rear extension, alterations to roof including increase in height of ridge, roof over existing first floor addtion, front dormer windows and alterations to front and rear fenestration.
Latest sale on 15 Birchwood Avenue was the highest on Land Registry record across the postcode.
£1,114,000
Modelled from EPC, postcode comparables.
£1,115,000
Recorded with HM Land Registry.
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15 Birchwood Avenue outperforms the street on floor area by a wide margin.
Price per m²
£5,023
Street avg £5,165
Floor Area
222 m²
Street avg 145 m²
Habitable Rooms
7 rooms
Rail-style transport is unusually close for this postcode.
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.4 km
Birchwood Avenue (DA14) — bus stop.

Daytime· 07:00 – 23:00
50.9dB

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Extension: Part single, part two storey · Side and rear of property
Part one, part two storey side and rear extension.
8 December 2023Most recent
£1,115,000
Median price across the last 5 sales in DA14 4JY: £800,000 (2024–2017).
Know what's planned nearby
Every planning application and decision on record
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Energy costs, comparable sales, crime, schools and transport

Street avg 7 rooms
CO₂ Emissions
19.0 t/year
Street avg 8.5 t/year
DA14 4ND
Closest school
0.4 km
Birkbeck Primary School. 29 schools nearby.
Night-time· 23:00 – 07:00
40.4dB