51a, Underdown Road, Southwick, Brighton, BN42 4HN
About 51a
51a is an end-of-terrace house in Southwick, Brighton, Brighton (BN42 4HN). It has a recorded floor area of 64 m² (around 689 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (September 2023) shows an E (score 54), well below the UK norm with real room to improve. Earlier certificates rated it B (August 2009); the latest reading is 3 bands lower. Between certificates, wall efficiency dropped from Good to Poor and roof efficiency dropped from Very Good to Very Poor. The recommended improvements would lift it to C (score 73), a 2-band jump.
It lags the bulk of the postcode on energy efficiency (less efficient than 73% of similar EPCs).
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Low energy lighting percentage decreased
Window efficiency improved
Wall insulation improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
51a has no planning applications on record.
But the area is active
2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
51a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£236,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in BN42 4HN: £432,000 (2025–2021).
Nearby sales in BN42 4HN
Warren Court, Flat 2, Underdown Road, Southwick, Brighton, BN42 4HN
Sold Feb 2025
£265,00025 Underdown Road, Southwick, Brighton, BN42 4HN
Sold Mar 2024
£432,00027a, Underdown Road, Southwick, Brighton, BN42 4HN
Sold Aug 2023
£290,00069 Underdown Road, Southwick, Brighton, BN42 4HN
Sold Jun 2022
£496,00021 Underdown Road, Southwick, Brighton, BN42 4HN
Sold Dec 2021
£445,000
Versus other Underdown Road homes
CO₂ Emissions for 51a lags the street by a wide margin.
EPC Rating
54 (E)
Street avg 60 (D)
Floor Area
64 m²
Street avg 61 m²
CO₂ Emissions
4.0 t/year
Street avg 3.2 t/year
Habitable Rooms
3 rooms
Street avg 3 rooms
Similar properties nearby
1 Grange Court, Southwick
BN42 4DX
1 Esmere House, The Green, Southwick
BN42 4DE
1 Colebrook Road, Southwick
BN42 4AL
1 Channel View, Whiterock Place, Southwick
BN42 4AZ
1 Green Court, The Green, Southwick
BN42 4GS
1 Amelia Close, Southwick
BN42 4AJ
1 Green Mews, The Green, Southwick
BN42 4DZ
1 Highdown, Southwick
BN42 4QT
The neighbourhood at a glance
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.
Road noise across the postcode

Daytime· 07:00 – 23:00
52.3dB

Night-time· 23:00 – 07:00
42.3dB







