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Basement Flat, 5 Martell Road, Lambeth, London, SE21 8EA

Estimated value

£317,000

  • Since the 2007 sale (£205,000)+55%
  • Against SE21 8EA's recent median (£535,000)-41%

Newest record on this page: March 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
Floor 01
Bedroom
1
Bathroom
1
Floor area
47 m²
506 sq ft
Energy rating
D
Score 67
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

£317,000

  • Against its 2007 sale (£205,000)+55%
  • Against SE21 8EA's recent median (£535,000)-41%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for Basement Flat is modelled from its 47 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SE21 8EA. 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

    47 m² from the EPC lodged in December 2022

  • Sales of this home

    2 sales recorded, the latest in 2007

  • Recent sales in SE21 8EA

    5 sales, median £535,000 (2026–2017)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: March 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.

Basement Flat has more than tripled in price since its earliest registered sale in 1997.

Sales timeline

  1. 19 September 2007Most recent

    £205,000

    +286.8%over 9 years

  2. 22 October 1997

    £53,000

Median price across the last 5 sales in SE21 8EA: £535,000 (2026–2017).

Risks

What this page doesn't show

1 potential issue has already been flagged for Basement Flat, 5 Martell Road, Lambeth, London, SE21 8EA. The detail, evidence and what to ask about it are in the Risks 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 Basement Flat

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

Basement Flat is a one-bedroom semi-detached house in Lambeth, London, London (SE21 8EA). It has a recorded floor area of 47 m² (around 506 sq ft) and construction records dating it to 1900-1929. The latest certificate (December 2022) shows a D (score 67), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 78). Period features are noted in the property record.

Held since September 2007 — that's 19 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 1997–2007, sale prices on this property compounded at 14.6% per year. Today's modelled estimate of £317,000 sits 54.6% above the 2007 sale of £205,000. On a £-per-square-foot basis, the last sale (£405/sq ft) was about 25.9% above the typical sold price in the postcode. At 47 m² it's 17.5% smaller than the typical home in the postcode (57 m² median across 20 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 70% of similar EPCs).

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

  • Bedrooms1
  • Bathrooms1

Outside

  • Communal gardenYes

Building

  • Period featuresYes
Before you decide

Everything you need to know about Basement Flat

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

Larger 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.
Current Certificate
Dec 2022

EPC Rating

A
B
C
D
D67
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Very Poor
CO2 Emissions
2.1 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 20 December 2032

6 years remaining
Planning

Planning history

Applications and permits filed against Basement Flat, 5 Martell Road, Lambeth, London, SE21 8EA, sourced from the PlanIt planning register.

Basement Flat has no planning applications on record.

1

But the area is active

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

On the street

Versus other Martell Road homes

Four headline reads against 19 similar flats on this street, drawn from the latest EPC and Land Registry data.

On habitable rooms, Basement Flat runs well behind the street norm.

Price per m²

£4,362

Street avg £4,957

Strongly above

Floor Area

47 m²

Street avg 63 m²

Strongly below

Habitable Rooms

2 rooms

Street avg 3 rooms

Strongly below

CO₂ Emissions

2.1 t/year

Street avg 2.4 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 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

0.1 km

Park Hall Road / Rosendale Road — bus stop.

Closest school

0.3 km

Elm Wood School. 60 schools nearby.

Nearest schools

  • Elm Wood SchoolPrimary347m
  • Kingsdale Foundation SchoolSecondary707m
  • The Elmgreen SchoolSecondary778m
  • Julian's SchoolPrimary857m

Nearest stops

  • Park Hall Road / Rosendale RoadBus stop71m
  • Martell RoadBus stop80m
  • Park Hall RoadBus stop298m
  • South Croxted RoadBus stop328m

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 8EA from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for SE21 8EA

Daytime· 07:00 – 23:00

52.2dB

Low
Night-time road noise heatmap for SE21 8EA

Night-time· 23:00 – 07:00

42.6dB

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 3 Building Survey

Victorian-era1st Floor MaisonetteEPC DPre-1919 build

Because the property was built before 1919, we believe a Level 3 building survey should be considered.

From £955 · 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.
£345k

1a, Flat 11, Martell Road, Lambeth

SE21 8EA

Flat2 bed1 bath
£318k

1a, Flat 1, Martell Road, Lambeth

SE21 8EA

Flat3 bed
£328k

1a, Flat 14, Martell Road, Lambeth

SE21 8EA

Flat
£347k

124f, Flat 5, Thurlow Park Road, Lambeth

SE21 8HP

Flat
£361k

1a, Flat 10, Martell Road, Lambeth

SE21 8EA

Flat
£361k

1a, Flat 2, Martell Road, Lambeth

SE21 8EA

Flat
£278k

1a, Flat 8, Martell Road, Lambeth

SE21 8EA

Flat
£362k

103b, Flat 2, Rosendale Road

SE21 8EZ

Flat

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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 Basement Flat is modelled from its 47 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SE21 8EA. 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 Basement Flat. 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 Basement Flat was lodged in December 2022 at band D and is valid until December 2032. 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 Basement Flat. 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 60 schools and 30 stops listed are measured in a straight line from SE21 8EA, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about Basement Flat, 5 Martell Road, Lambeth, London, SE21 8EA. Each answer is also embedded as structured data for search engines.

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