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Get started21 Castle Avenue is a two-bedroom semi-detached house in Highcliffe, Christchurch, Christchurch (BH23 4LL). It has a recorded floor area of 76 m² (around 818 sq ft), construction records dating it to 1950-1966 and council tax band D. The latest certificate (September 2014) shows a D (score 66), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 84), a 2-band jump. The latest certificate is from September 2014, so improvements made since then won't be reflected. Other recorded features include a conservatory.
Sale prices here have outpaced England HPI: 8% per year against 0% for the wider region. Today's modelled estimate of £399,000 is 31.9% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£370/sq ft) was about 63.5% above the typical sold price in the postcode. 11 years since the last transfer (January 2015). Across the public record there are 4 sales, relatively high churn for a single property.
Recommended upgrades on file would lift this property by multiple EPC bands.
This certificate is over 10 years old and is no longer valid.Expired 16 Sept 2024
Sale price has grown by over 3x since 1998.
£399,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.0% per year over 17 years.
£302,500
Growth on file: 8.0% per year over 17 years.
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21 Castle Avenue is notably below the street on habitable rooms.
Price per m²
£3,980
Street avg £3,317
Floor Area
76 m²
Street avg 99 m²
Habitable Rooms
3 rooms
Street avg 5 rooms
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km

Daytime· 07:00 – 23:00
48.9dB

23 January 2015Most recent
£302,500
+21.0%over 9 years13 December 2005
£249,950
+4.2%over 2 years29 July 2003
£239,950
+187.4%over 5 years17 April 1998
£83,500
Median price across the last 5 sales in BH23 4LL: £420,000 (2024–2017).
27a Castle Avenue Highcliffe Christchurch
Sold Dec 2024
23 Castle Avenue Highcliffe Christchurch
Sold Oct 2024
24 Castle Avenue Highcliffe Christchurch
Sold Nov 2021
8 Castle Avenue Highcliffe Christchurch
Sold Aug 2019
27 Castle Avenue Highcliffe Christchurch
Sold Oct 2017
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CO₂ Emissions
3.0 t/year
Street avg 3.6 t/year
BH23 4QZ
Hinton Wood Avenue — bus stop.
Closest school
0.7 km
Highcliffe St Mark Primary School. 4 schools nearby.
Night-time· 23:00 – 07:00
39.4dB