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21 Avondale Road, Bromley, London, SE9 4SN

Estimated value

£668,000

  • Since the 2013 sale (£312,000)+114%
  • Against SE9 4SN's recent median (£625,000)+7%

Newest record on this page: December 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
Floor area
130 m²
1399 sq ft
Energy rating
E
Score 46
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

£668,000

  • Against its 2013 sale (£312,000)+114%
  • Against SE9 4SN's recent median (£625,000)+7%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 21 Avondale Road is modelled from its 130 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in SE9 4SN. 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

    130 m² from the EPC lodged in December 2018

  • Sales of this home

    1 sale recorded, the latest in 2013

  • Recent sales in SE9 4SN

    5 sales, median £625,000 (2025–2024)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: December 2025Latest 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.

21 Avondale Road valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 1 July 2013Most recent

    £312,000

Median price across the last 5 sales in SE9 4SN: £625,000 (2025–2024).

Risks

What this page doesn't show

2 potential issues have already been flagged for 21 Avondale Road, Bromley, London, SE9 4SN. 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

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Overview

About 21 Avondale Road

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

21 Avondale Road is a four-bedroom semi-detached house in Bromley, London, London (SE9 4SN). It has a recorded floor area of 130 m² (around 1399 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (December 2018) shows an E (score 46), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 68).

Today's modelled estimate of £668,000 sits 114.1% above the 2013 sale of £312,000. On a £-per-square-foot basis, the last sale (£223/sq ft) was about 20.4% below the postcode norm. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). Last changed hands 13 years ago, in July 2013.

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
  • EnsuiteYes

Outside

  • ParkingOff street

Building

  • Central heatingYes
  • RefurbishedYes
Before you decide

Everything you need to know about 21 Avondale Road

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 Avondale Road's carbon output runs well above what efficient homes in the postcode produce.

Current Certificate
Dec 2018

EPC Rating

A
B
C
D
E
E46
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
7.8 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 6 December 2028

2 years remaining
Planning

Planning history

Applications and permits filed against 21 Avondale Road, Bromley, London, SE9 4SN, sourced from the PlanIt planning register.

21 Avondale Road has no planning applications on record.

15

But the area is active

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

On the street

Versus other Avondale Road homes

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

EPC Rating for 21 Avondale Road lags the street by a wide margin.

Price per m²

£2,400

Street avg £3,970

Strongly below

Floor Area

130 m²

Street avg 123 m²

Above

Habitable Rooms

5 rooms

Street avg 6 rooms

Strongly below

CO₂ Emissions

7.8 t/year

Street avg 5.6 t/year

Strongly 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

428/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Mottingham / Prince Of Wales — bus stop.

Closest school

0.6 km

St Vincent's Catholic Primary School. 35 schools nearby.

Nearest schools

  • St Vincent's Catholic Primary SchoolPrimary567m
  • Orion RavensworthPrimary648m
  • Greenacres Primary School and Language Impairment UnitPrimary771m
  • Marvels Lane Primary SchoolPrimary1.1km

Nearest stops

  • Mottingham / Prince Of WalesBus stop123m
  • Mottingham Road / Court RoadBus stop209m
  • Court Road / Mottingham RoadBus stop280m
  • Beaconsfield Road (SE9)Bus stop466m

Most reported crime locally

  • Violence & Sexual Offences1,937 reports28%
  • Anti-social Behaviour1,247 reports18%
  • Shoplifting672 reports10%
  • Vehicle Crime670 reports10%

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 SE9 4SN from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for SE9 4SN

Daytime· 07:00 – 23:00

51.6dB

Low
Night-time road noise heatmap for SE9 4SN

Night-time· 23:00 – 07:00

41.8dB

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

Early 20th centurySemi-Detached HouseEPC ESolid (non-cavity) walls

Because the property has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.

From £1,155 · 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.
£642k

1 Beaconsfield Road, Bromley

SE9 4DJ

4 bed3 bath
£819k

1 Avondale Road, Bromley

SE9 4SN

4 bed2 bath
£390k

1 Cattistock Road, Bromley

SE9 4AW

4 bed
£698k

1 Elmhurst Road, Bromley

SE9 4DW

5 bed2 bath
£431k

1 Blanchard Close, Bromley

SE9 4TZ

3 bed1 bath
£405k

1 Bentfield Gardens, Lewisham

SE9 4PN

3 bed1 bath
£395k

1 Dittisham Road, Bromley

SE9 4BJ

3 bed
£404k

1 Duddington Close, Bromley

SE9 4JD

2 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 Avondale Road is modelled from its 130 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in SE9 4SN. 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 Avondale Road. 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 Avondale Road was lodged in December 2018 at band E and is valid until December 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. None is matched to 21 Avondale Road. 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 35 schools and 30 stops listed are measured in a straight line from SE9 4SN, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
Council tax band
21 Avondale Road 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 Avondale Road, Bromley, London, SE9 4SN. Each answer is also embedded as structured data for search engines.

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