Model valuation£417,0008 Busby Close
Local market context
20 Carshalton Avenue is a three-bedroom semi-detached house in Portsmouth (PO6 2JT). It has a recorded floor area of 164 m² (around 1765 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (March 2016) shows an E (score 43), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 69), a 2-band jump. The latest certificate is from March 2016, so improvements made since then won't be reflected. Other recorded features include a loft. Records show the property has been extended at some point in its history.
At 164 m² the property is well over the postcode median (95 m² across 17 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). Across 1998–2016, sale prices on this property compounded at 5.4% per year. Today's modelled estimate of £523,000 is 45.3% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£204/sq ft) was about 27.8% below the postcode norm. Last sold in June 2016, so it's been off the market for around 10 years.
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20 Carshalton 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This certificate is over 10 years old and is no longer valid.Expired 01 Mar 2026
Certificate validity
Expired on 1 March 2026
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20 Carshalton Avenue has no planning applications on record.
But the area is active
8 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
20 Carshalton Avenue has more than doubled in price since the earliest registered sale in 1998.
£523,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.4% per year over 18 years.
£360,000
Growth on file: 5.4% per year over 18 years.
19 June 2016Most recent
£360,000
+94.6%over 14 years12 September 2001
£185,000
+34.1%over 3 years23 April 1998
£138,000
Median price across the last 5 sales in PO6 2JT: £465,000 (2026–2017).
8 Carshalton Avenue, Portsmouth, PO6 2JT
Sold Jun 2026
1 Carshalton Avenue, Portsmouth, PO6 2JT
Sold Jul 2021
1d, Carshalton Avenue, Portsmouth, PO6 2JT
Sold Jun 2021
7 Carshalton Avenue, Portsmouth, PO6 2JT
Sold Jul 2019
19 Carshalton Avenue, Portsmouth, PO6 2JT
Sold Jun 2017
On epc rating, 20 Carshalton Avenue runs well behind the street norm.
Price per m²
£2,195
Street avg £3,227
Floor Area
164 m²
Street avg 98 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
10.0 t/year
Street avg 4.5 t/year
Property research, connected
Explore sale histories, valuations, energy ratings and local areas. Ask the assistant to connect the details and take your research further.
Start your researchPO6 2JT
PO6 2PS
PO6 2AG
PO6 2BG
PO6 2RZ
PO6 2BE
PO6 2NB
PO6 2QL
Crime
260/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Carshalton Avenue — bus stop.
Closest school
0.4 km
Springfield School. 22 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.

Daytime· 07:00 – 23:00
51.9dB

Night-time· 23:00 – 07:00
41.4dB