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21 Carmarthen Avenue, Drayton, Portsmouth, PO6 2AG

1 planning record

Estimated value

£618,000

  • Since the 2018 sale (£490,000)+26%
  • Against PO6 2AG's recent median (£600,000)+3%

Newest record on this page: October 2025. 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
4
Bathroom
1
Floor area
147 m²
1582 sq ft
Energy rating
E
Score 42
Council tax
Band E
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

£618,000

  • Against its 2018 sale (£490,000)+26%
  • Against PO6 2AG's recent median (£600,000)+3%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 21 Carmarthen Avenue is modelled from its 147 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in PO6 2AG. 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

    147 m² from the EPC lodged in May 2018

  • Sales of this home

    1 sale recorded, the latest in 2018

  • Recent sales in PO6 2AG

    5 sales, median £600,000 (2025–2019)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: October 2025Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
Planning1 applicationFull 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.

21 Carmarthen Avenue valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 15 August 2018Most recent

    £490,000

Median price across the last 5 sales in PO6 2AG: £600,000 (2025–2019).

Risks

What this page doesn't show

2 potential issues have already been flagged for 21 Carmarthen Avenue, Drayton, Portsmouth, PO6 2AG. 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 21 Carmarthen Avenue

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

21 Carmarthen Avenue is a four-bedroom semi-detached house in Drayton, Portsmouth, Portsmouth (PO6 2AG). It has a recorded floor area of 147 m² (around 1582 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (May 2018) shows an E (score 42), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 78), a 2-band jump.

It lags the bulk of the postcode on energy efficiency (less efficient than 70% of similar EPCs). Today's modelled estimate of £618,000 is 26.1% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£310/sq ft) was about 20.5% above the typical sold price in the postcode. Most recent transfer: August 2018 at £490,000. One historical planning record sits against the property in 2018.

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

  • Bedrooms4
  • Bathrooms1
  • Dining roomYes
  • EnsuiteYes

Outside

  • Private gardenWest-facing
  • GarageIntegral
Before you decide

Everything you need to know about 21 Carmarthen 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.

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

Current Certificate
May 2018

EPC Rating

A
B
C
D
E
E42
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Poor
Windows
Poor
CO2 Emissions
8.8 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 30 May 2028

1 year remaining
Planning

Planning history

Applications and permits filed against 21 Carmarthen Avenue, Drayton, Portsmouth, PO6 2AG, sourced from the PlanIt planning register.

1 application on record at 21 Carmarthen Avenue, Drayton, Portsmouth, PO6 2AG

1decisions1extensions10documents8nearby
  1. Nov 2018
    ExtensionFull
    Outcome in report

    Extension: Single storey · Rear of property

    Construction of single storey rear extension and raised decking area

    Documents
    10 docs on file
    Reference
    18/01495/HOU
    Full record in report

Unlock 21 Carmarthen Avenue, Drayton, Portsmouth, PO6 2AG's full planning history

You're seeing the shape of it. The report has the substance.

  • Every decision — granted, refused or withdrawn (1 on record)
  • All 1 application on this property in full, plus 8 notable nearby
  • The 10 documents, officer reports & conditions
  • What the pattern means for extending or converting here
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On the street

Versus other Carmarthen Avenue homes

Four headline reads against 20 similar houses on this street, drawn from the latest EPC and Land Registry data.

21 Carmarthen Avenue is notably below the street on epc rating.

Price per m²

£3,333

Street avg £3,313

On par

Floor Area

147 m²

Street avg 174 m²

Below

Habitable Rooms

7 rooms

Street avg 7 rooms

Above

CO₂ Emissions

8.8 t/year

Street avg 7.4 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

0.3 km

Court Lane — bus stop.

Closest school

0.6 km

Court Lane Infant Academy. 22 schools nearby.

Nearest schools

  • Court Lane Infant AcademyPrimary620m
  • Court Lane Junior AcademyPrimary620m
  • Springfield SchoolSecondary839m
  • Solent Junior SchoolPrimary965m

Nearest stops

  • Court LaneBus stop306m
  • Penarth AvenueBus stop314m
  • Carshalton AvenueBus stop324m
  • Cliffdale GardensBus stop383m

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 2AG from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for PO6 2AG

Daytime· 07:00 – 23:00

53.0dB

Low
Night-time road noise heatmap for PO6 2AG

Night-time· 23:00 – 07:00

43.6dB

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 £895 · 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.
£509k

1 East Court, Cosham

PO6 2NX

4 bed2 bath
£508k

1 Edison Spur, Drayton

PO6 2NW

4 bed2 bath
£679k

1 Carmarthen Avenue, Drayton

PO6 2AG

3 bed1 bath
£541k

1 Bernard Avenue, Drayton

PO6 2JP

5 bed
£491k

1 Carshalton Avenue

PO6 2JT

3 bed1 bath
£409k

1 Beaconsfield Avenue

PO6 2PS

3 bed1 bath
£353k

1 Cranborne Road, Drayton

PO6 2BG

3 bed1 bath
£352k

1 Dovercourt Road

PO6 2RZ

3 bed1 bath

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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 21 Carmarthen Avenue is modelled from its 147 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in PO6 2AG. 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. 1 sale is recorded for 21 Carmarthen 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 21 Carmarthen Avenue was lodged in May 2018 at band E and is valid until May 2028. Floor area, heating and insulation details on this page come from it.
Planning records
Planning applications are collected from local authority registers through PlanIt. 1 application is matched to 21 Carmarthen 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 2AG, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
Council tax band
21 Carmarthen Avenue is in council tax band E. 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 21 Carmarthen Avenue, Drayton, Portsmouth, PO6 2AG. Each answer is also embedded as structured data for search engines.

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