What kind of home is 21 Underdown Road, BN42 4HN?

21 Underdown Road, BN42 4HN is a 3-bedroom semi-detached house.

What was the last sold price for 21 Underdown Road, BN42 4HN?

21 Underdown Road, BN42 4HN last sold for £445,000 in December 2021, around 4 years ago. Land Registry has 3 sales on record going back to £91,950 in December 1999. Source: HM Land Registry.

How has the value of 21 Underdown Road, BN42 4HN changed over time?

Across 3 sales between December 1999 and December 2021, 21 Underdown Road, BN42 4HN rose from £91,950 to £445,000, a change of £353,050. That works out to roughly +7.4% per year compounded over 22 years. Source: HM Land Registry.

How energy efficient is 21 Underdown Road, BN42 4HN?

The current EPC rating for 21 Underdown Road, BN42 4HN is D with a score of 59 out of 100, lodged in July 2019. It has improved from a E recorded in June 2009. The assessor estimates the property could reach a C. Source: EPC Register.

How big is 21 Underdown Road, BN42 4HN?

21 Underdown Road, BN42 4HN has a recorded floor area of 88 m² (947 sq ft), around 29 m² per bedroom. That makes it about 28% larger than the median EPC-recorded property in BN42 4HN. Source: EPC Register.

What heating system does 21 Underdown Road, BN42 4HN use?

The latest EPC at 21 Underdown Road, BN42 4HN records mains gas as the main heating fuel. Source: EPC Register.

Are there any planning records for 21 Underdown Road, BN42 4HN?

21 Underdown Road, BN42 4HN has 1 planning record on file (1 approved), most recent in November 2022. Source: PlanIt planning register.

What is the council tax band for 21 Underdown Road, BN42 4HN?

21 Underdown Road, BN42 4HN is in council tax band D.

Which area is 21 Underdown Road, BN42 4HN in?

21 Underdown Road, BN42 4HN sits in Southwick, Brighton, Brighton. It falls within the BN42 postcode district in West Sussex.

How safe is the area around 21 Underdown Road, BN42 4HN?

Police records around 21 Underdown Road, BN42 4HN show an average of 4 reported crimes per month over the last 6 months. Shoplifting makes up roughly 35% of reports, the most common category. The overall trend is broadly stable. Source: Police UK.

What schools are near 21 Underdown Road, BN42 4HN?

The closest primary school to 21 Underdown Road, BN42 4HN is Glebe Primary School (544m), one of 14 primaries within walking distance. The closest secondary is Shoreham Academy (516m), with 2 secondaries in the surrounding area.

How well connected is 21 Underdown Road, BN42 4HN?

The closest bus stop to 21 Underdown Road, BN42 4HN is St Theresa's Church, 176m away. The nearest rail option is Southwick Rail Station, 794m away.

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21 Underdown Road, Southwick, Brighton, BN42 4HN

3 sales on record1 planning record

Property type

Semi-detached

Bedrooms

Floor area

88 m²

947 sq ft

Energy rating

Score 59

Council tax

Band D

Tenure

Owner Occupied

Overview

About 21 Underdown Road

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

21 Underdown Road is a three-bedroom semi-detached house in Southwick, Brighton, Brighton (BN42 4HN). It has a recorded floor area of 88 m² (around 947 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (July 2019) shows a D (score 59), a step below the typical UK home. When first surveyed in June 2009 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Good to Very Good, window efficiency went from Poor to Average and hot-water efficiency went from Poor to Good. The recommended improvements would push it to C (score 80). Period features are noted in the property record.

At 88 m² it's 25.7% larger than the typical home in the postcode (70 m² median across 40 EPCs). Across 1999–2021, sale prices on this property compounded at 7.4% per year. Today's modelled estimate of £520,000 is 16.9% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£470/sq ft) was about 104.4% above the typical sold price in the postcode. Last sale on file: £445,000 in December 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. One historical planning record sits against the property in 2022.

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

Bedrooms3
Dining roomYes
FireplaceYes

Outside

Private gardenWest-facing
DrivewayYes

Building

Period featuresYes
RefurbishedYes

Before you decide

Everything you need to know about 21 Underdown Road

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

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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(1 of 2)

Jul 2019

EPC Rating

D59

Main Heating

Gas

Main Fuel

Gas

Hot Water

Good

Windows

Average

CO2 Emissions

4.3 t/year

Occupancy

Owner Occupied

Property Improvements

Changes detected from historical EPC data

Jul 2019from Jun 2009

EPC improved fromE43toD59

Heating Controls

Prog + TRVsFull

Heating controls upgraded for better temperature management

Hot Water

Main (No Stat)Main System

Hot water system upgraded

Windows

Partial DoubleFull Double

Windows upgraded, improving insulation

Roof Insulation

InsulatedWell Insulated

Loft insulation upgraded to recommended levels

Low Energy Lighting

15%100%

More low energy lighting installed

Get a survey for this property

Level 3 Building Survey

Victorian-eraSemi-Detached HouseEPC DPre-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 £1,085 · Includes VAT

Planning

Planning history

Applications and permits filed against 21 Underdown Road, Southwick, Brighton, BN42 4HN, sourced from the PlanIt planning register.

1 application on record at 21 Underdown Road, Southwick, Brighton, BN42 4HN

1decisions7documents2nearby

Nov 2022
Outline
Outcome in report
Application for a Certificate of Lawfulness for a proposed dormer extension to rear and installation of roof lights to front elevation.
Documents
7 docs on file
Reference
AWDM/1623/22
Full record in report

Unlock 21 Underdown Road, Southwick, Brighton, BN42 4HN'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 2 notable nearby
The 7 documents, officer reports & conditions
What the pattern means for extending or converting here

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Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

Price for 21 Underdown Road has grown more than fourfold since the 1999 starting point.

Current estimate

£520,000

Modelled from EPC, postcode comparables and a sale-price growth of 7.4% per year over 22 years.

See how we calculated this

Last sold (2021)

£445,000

Growth on file: 7.4% per year over 22 years.

Sales timeline

10 December 2021Most recent
£445,000
+93.5%over 11 years
22 January 2010
£230,000
+150.1%over 10 years
9 December 1999
£91,950

Median price across the last 5 sales in BN42 4HN: £405,000 (2025–2021).

Nearby sales in BN42 4HN

On the street

Versus other Underdown Road homes

Four headline reads against 21 similar houses on this street, drawn from the latest EPC and Land Registry data.

21 Underdown Road outperforms the street on price per m² by a wide margin.

Price per m²

£5,057

Street avg £3,782

Strongly above

Floor Area

88 m²

Street avg 110 m²

On par

Habitable Rooms

5 rooms

Street avg 5 rooms

On par

CO₂ Emissions

4.3 t/year

Street avg 5.3 t/year

On par

Before you decide

Everything you need to know about 21 Underdown Road

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

Pick your report · every report is £14.99

One time fee only - money back guarantee

The data behind every report

Comparables

Similar properties nearby

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

£529k

1 Hill Farm Way, Southwick

BN42 4YJ

3 bed1 bath

£534k

1 Hill Farm Cottages, Upper Kingston Lane, Southwick

BN42 4YN

3 bed

£428k

1 Farm Way, Southwick

BN42 4NU

3 bed2 bath

£415k

1 Green Close, Southwick

BN42 4GR

3 bed

£667k

1 Albert Road, Southwick

BN42 4GE

3 bed2 bath

£541k

1 Downland Close, Southwick

BN42 4RH

4 bed2 bath

£403k

1 Cardigan Villas, Southwick

BN42 4GG

2 bed1 bath

£301k

1 Amelia Close, Southwick

BN42 4AJ

2 bed2 bath

Area

The neighbourhood at a glance

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

Full Brighton report

Rail-style transport is unusually close for this postcode.

Crime

4/mo

Steady year-on-year across the wider district.

Nearest stop

0.2 km

St Theresa's Church — bus stop.

Closest school

0.5 km

Shoreham Academy. 16 schools nearby.

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 BN42 4HN from Defra's strategic mapping. The pin marks this postcode's centroid.

Daytime· 07:00 – 23:00

52.3dB

Low

Night-time road noise heatmap for BN42 4HN

Night-time· 23:00 – 07:00

42.3dB

Low

55 dB

60 dB

65 dB

70 dB

75 dB

80 dB

Defra Road Noise Strategic Mapping, Round 4

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 21 Underdown Road, Southwick, Brighton, BN42 4HN. Each answer is also embedded as structured data for search engines.