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23 Calton Avenue, Southwark, London, SE21 7DE

5 sales on record1 planning record

Estimated value

£1,306,000

  • Since the 2024 sale (£1,480,000)-12%
  • Against SE21 7DE's recent median (£1,345,000)-3%

Newest record on this page: July 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Mid terrace
Habitable rooms
5
From EPC
Floor area
123 m²
1324 sq ft
Energy rating
E
Score 52
Council tax
Band C
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

£1,306,000

  • Against its 2024 sale (£1,480,000)-12%
  • Against SE21 7DE's recent median (£1,345,000)-3%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 23 Calton Avenue is modelled from its 123 m² EPC floor area, its 5 recorded sales and recent sales of comparable homes in SE21 7DE. 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

    123 m² from the EPC lodged in March 2019

  • Sales of this home

    5 sales recorded, the latest in 2024

  • Recent sales in SE21 7DE

    5 sales, median £1,345,000 (2025–2019)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: July 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.

Price for 23 Calton Avenue has grown more than fourfold since the 1996 starting point.

Sales timeline

  1. 17 October 2024Most recent

    £1,480,000

    +32.7%over 5 years

  2. 25 July 2019

    £1,115,000

    +109.2%over 12 years

  3. 2 February 2007

    £533,000

    +113.2%over 8 years

  4. 21 May 1998

    £250,000

    +45.3%over 1 year

  5. 18 July 1996

    £172,000

Median price across the last 5 sales in SE21 7DE: £1,345,000 (2025–2019).

Risks

What this page doesn't show

Nothing is flagged from the data on this page, but these checks are only run in the report. The detail, evidence and what to ask about it are in the Risks Report.
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

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Overview

About 23 Calton Avenue

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

23 Calton Avenue is a mid-terrace house in Southwark, London, London (SE21 7DE). It has a recorded floor area of 123 m² (around 1324 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (March 2019) shows an E (score 52), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 81), a 3-band jump.

Across 1996–2024, sale prices on this property compounded at 7.9% per year. Today's modelled estimate of £1,306,000 is 11.8% below the 2024 sale of £1,480,000, running counter to the wider postcode trend, which makes the EPC and condition history especially worth a look. On a £-per-square-foot basis, the last sale (£1,118/sq ft) was about 101.8% above the typical sold price in the postcode. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. One planning record on file: a loft conversion approved in 2010. Past consents include a loft conversion, meaningful when judging how the property has evolved. Last sale on file: £1,480,000 in October 2024.

Before you decide

Everything you need to know about 23 Calton Avenue

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

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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.

23 Calton Avenue sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.

Current Certificate
Mar 2019

EPC Rating

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

Certificate validity

Valid until 27 March 2029

2 years remaining
Planning

Planning history

Applications and permits filed against 23 Calton Avenue, Southwark, London, SE21 7DE, sourced from the PlanIt planning register.

1 application on record at 23 Calton Avenue, Southwark, London, SE21 7DE

1decisions1extensions11documents
  1. Aug 2010
    Loft ConversionFull
    Outcome in report

    Loft conversion including new dormer window, new heritage rooflight and new window to gable. New rooflights to back section of house. Reconfigured window to rear elevation of house.

    Documents
    11 docs on file
    Reference
    10/AP/1908
    Full record in report

Unlock 23 Calton Avenue, Southwark, London, SE21 7DE'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
  • The 11 documents, officer reports & conditions
  • What the pattern means for extending or converting here
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On the street

Versus other Calton Avenue homes

Four headline reads against 10 similar houses on this street, drawn from the latest EPC and Land Registry data.

EPC Rating for 23 Calton Avenue lags the street by a wide margin.

Price per m²

£12,033

Street avg £9,260

Above

Floor Area

123 m²

Street avg 151 m²

On par

Habitable Rooms

5 rooms

Street avg 5 rooms

On par

CO₂ Emissions

6.4 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 London district page.
Full London report

Rail-style transport is unusually close for this postcode.

Crime

66/mo

Falling year-on-year across the wider district.

Nearest stop

0.2 km

Dulwich Village — bus stop.

Closest school

0.2 km

Dulwich Village Church of England Infants' School. 68 schools nearby.

Nearest schools

  • Dulwich Village Church of England Infants' SchoolPrimary159m
  • Dulwich Hamlet Junior SchoolPrimary262m
  • Judith Kerr Primary SchoolPrimary618m
  • The Charter School North DulwichSecondary633m

Nearest stops

  • Dulwich VillageBus stop154m
  • Dulwich Village SchoolBus stop169m
  • Dulwich Village (SE21)Bus stop256m
  • Dulwich VillageBus stop357m

Most reported crime locally

  • Violence & Sexual Offences290 reports24%
  • Vehicle Crime203 reports17%
  • Anti-social Behaviour162 reports14%
  • Other Theft126 reports11%

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 SE21 7DE from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for SE21 7DE

Daytime· 07:00 – 23:00

52.3dB

Low
Night-time road noise heatmap for SE21 7DE

Night-time· 23:00 – 07:00

42.0dB

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 3 Building Survey

Victorian-eraMid-Terrace HouseEPC EPre-1919 buildExtended multiple times (2+ extensions)Solid (non-cavity) walls

Because the property was built before 1919, has been extended more than once, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.

From £1,645 · 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.
£1.3m

1 Mitchell S Place, Southwark

SE21 7JZ

3 bed
£1.4m

1 Desenfans Road, Southwark

SE21 7DN

£1.2m

1 Hunts Slip Road, Southwark

SE21 7LJ

£1.1m

1 Red Post Hill, Southwark

SE21 7BX

£1.6m

1 Pond Cottages, College Road, Southwark

SE21 7LE

3 bed2 bath
£1.7m

1 Pickwick Road, Southwark

SE21 7JN

3 bed2 bath
£987k

1 Ryecotes Mead, Southwark

SE21 7EP

3 bed2 bath
£914k

1 Court Lane, Southwark

SE21 7DH

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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 23 Calton Avenue is modelled from its 123 m² EPC floor area, its 5 recorded sales and recent sales of comparable homes in SE21 7DE. 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. 5 sales are recorded for 23 Calton 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 23 Calton Avenue was lodged in March 2019 at band E and is valid until March 2029. 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 23 Calton 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 18 months, which places each incident at an approximate point. The 68 schools and 30 stops listed are measured in a straight line from SE21 7DE, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
Council tax band
23 Calton Avenue is in council tax band C. 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 23 Calton Avenue, Southwark, London, SE21 7DE. Each answer is also embedded as structured data for search engines.

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