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12 Carshalton Avenue, Portsmouth, PO6 2JT

Extendable

Estimated value

£445,000

  • Since the 2010 sale (£285,000)+56%
  • Against PO6 2JT's recent median (£465,000)-4%

Newest record on this page: June 2026. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Semi-detached
Bedrooms
5
Floor area
113 m²
1217 sq ft
Energy rating
E
Score 52
Council tax
Band D
Tenure
Owner Occupied
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Valuation

About this valuation

How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.

Our estimate

£445,000

  • Against its 2010 sale (£285,000)+56%
  • Against PO6 2JT's recent median (£465,000)-4%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 12 Carshalton Avenue is modelled from its 113 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in PO6 2JT. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

What it's based on

  • Floor area

    113 m² from the EPC lodged in December 2009

  • Sales of this home

    2 sales recorded, the latest in 2010

  • Recent sales in PO6 2JT

    5 sales, median £465,000 (2026–2017)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: June 2026Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
PlanningNone on this homeFull history, plus nearby schemes
Flood riskNot shownIncluded
Price

Sales history & valuation

Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.

Sale price has at least doubled since 1999.

Sales timeline

  1. 9 September 2010Most recent

    £285,000

    +166.4%over 11 years

  2. 21 June 1999

    £107,000

Median price across the last 5 sales in PO6 2JT: £465,000 (2026–2017).

Risks

What this page doesn't show

2 potential issues have already been flagged for 12 Carshalton Avenue, Portsmouth, PO6 2JT. The detail, evidence and what to ask about it are in the Risks Report.
  • Signs of HMO activity in the areaIn report
  • Larger development activity nearbyIn report
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

One time fee only - money back guarantee

Overview

About 12 Carshalton Avenue

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

12 Carshalton Avenue is a five-bedroom semi-detached house in Portsmouth (PO6 2JT). It has a recorded floor area of 113 m² (around 1217 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (December 2009) shows an E (score 52), well below the UK norm with real room to improve. Earlier certificates rated it D (January 2009); the latest reading is one band lower. Between certificates, window efficiency went from Average to Good and lighting went from Very Poor to Poor; while roof efficiency dropped from Good to Very Poor. The recommended improvements would push it to D (score 60). The latest certificate is from December 2009, so improvements made since then won't be reflected. Other recorded features include a conservatory. Period features are noted in the property record. Our model identifies extension potential, subject to local planning policy.

Held since September 2010 — that's 16 years off the open market, well above the local norm. Across 1999–2010, sale prices on this property compounded at 9.1% per year. Today's modelled estimate of £445,000 sits 56.1% above the 2010 sale of £285,000. On a £-per-square-foot basis, the last sale (£234/sq ft) was about 16.4% below the postcode norm. At 113 m² it's 19.5% larger than the typical home in the postcode (95 m² median across 17 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs). 5 bedrooms is on the larger side for this postcode, where 3 is the typical count.

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

  • Bedrooms5
  • Dining roomYes
  • EnsuiteYes
  • ConservatoryYes

Outside

  • ParkingOff road

Building

  • Period featuresYes
  • Extension potentialPossible
Before you decide

Everything you need to know about 12 Carshalton Avenue

The true value, the hidden risks and the full sale history, in one report.

Signs of HMO activity in the areaLarger development activity nearby

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Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

12 Carshalton Avenue's carbon output runs well above what efficient homes in the postcode produce.

EPC Expired

This certificate is over 10 years old and is no longer valid.Expired 22 Dec 2019

Current Certificate(1 of 3)
Dec 2009

EPC Rating

A
B
C
D
E
E52
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Very Good
Windows
Good
CO2 Emissions
6.2 t/year
Occupancy
Owner Occupied

Certificate validity

Expired on 22 December 2019

New assessment needed to sell or let

Property Improvements

Changes detected from historical EPC data

Dec 2009from Dec 2009
EPC improved fromD57toE52
Windows
AverageGood

Window efficiency improved

Planning

Planning history

Applications and permits filed against 12 Carshalton Avenue, Portsmouth, PO6 2JT, sourced from the PlanIt planning register.

12 Carshalton Avenue has no planning applications on record.

8

But the area is active

8 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.

On the street

Versus other Carshalton Avenue homes

Four headline reads against 17 similar houses on this street, drawn from the latest EPC and Land Registry data.

Habitable Rooms for 12 Carshalton Avenue runs comfortably ahead of the street norm.

Price per m²

£2,521

Street avg £3,204

Below

Floor Area

113 m²

Street avg 101 m²

Above

Habitable Rooms

7 rooms

Street avg 5 rooms

Strongly above

CO₂ Emissions

6.2 t/year

Street avg 4.8 t/year

Below
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Portsmouth district page.
Full Portsmouth report

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.

Nearest schools

  • Springfield SchoolSecondary448m
  • Court Lane Infant AcademyPrimary480m
  • Court Lane Junior AcademyPrimary480m
  • Solent Junior SchoolPrimary880m

Nearest stops

  • Carshalton AvenueBus stop141m
  • Penarth AvenueBus stop153m
  • Court LaneBus stop225m
  • Central RoadBus stop244m

Most reported crime locally

  • Violence & Sexual Offences1,949 reports47%
  • Shoplifting436 reports10%
  • Anti-social Behaviour381 reports9%
  • Public Order369 reports9%

Go deeper on the local area

A Local Area report breaks down crime, transport links, schools and air quality in depth.

Noise

Road noise across the postcode

Modelled day and night-time noise levels around PO6 2JT from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for PO6 2JT

Daytime· 07:00 – 23:00

51.9dB

Low
Night-time road noise heatmap for PO6 2JT

Night-time· 23:00 – 07:00

41.4dB

Low
55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4
SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Early 20th centurySemi-Detached HouseEPC E

We've checked 10 risk factors against the available data for this property and believe a Level 2 HomeBuyer Report could be a suitable option for you.

From £695 · Includes VAT

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£541k

1 Bernard Avenue, Drayton

PO6 2JP

5 bed
£508k

1 Edison Spur, Drayton

PO6 2NW

4 bed2 bath
£509k

1 East Court, Cosham

PO6 2NX

4 bed2 bath
£409k

1 Beaconsfield Avenue

PO6 2PS

3 bed1 bath
£491k

1 Carshalton Avenue

PO6 2JT

3 bed1 bath
£353k

1 Cranborne Road, Drayton

PO6 2BG

3 bed1 bath
£352k

1 Dovercourt Road

PO6 2RZ

3 bed1 bath
£350k

1 Chalkridge Road, Drayton

PO6 2BE

3 bed

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Method

How to read this page

Where every figure above comes from, how current it is and what it can't tell you.
Valuation method in detail
How the estimate is made
The estimate for 12 Carshalton Avenue is modelled from its 113 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in PO6 2JT. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
Where sold prices come from
Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 2 sales are recorded for 12 Carshalton Avenue. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
Reading the EPC
Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 12 Carshalton Avenue was lodged in December 2009 at band E and expired in December 2019, so a new one is needed to sell or let. 3 certificates are on record, which shows how the home has changed.
Planning records
Planning applications are collected from local authority registers through PlanIt. None is matched to 12 Carshalton Avenue. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
Area figures
Crime is police-recorded street-level data over the last 16 months, which places each incident at an approximate point. The 22 schools and 30 stops listed are measured in a straight line from PO6 2JT, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
Council tax band
12 Carshalton Avenue is in council tax band D. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 12 Carshalton Avenue, Portsmouth, PO6 2JT. Each answer is also embedded as structured data for search engines.

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