129a, Flat 4, Clifton Road, Worthing, BN11 4DP
About 129a
129a is a detached house in Worthing (BN11 4DP). It has a recorded floor area of 40 m² (around 431 sq ft) and construction records dating it to 1900-1929. At 40 m² this is the 3rd smallest of 5 units on EPC record in 129a, where floor areas span 28–62 m². The building's EPC ratings span E to D, with this unit at the bottom. On EPC score it ranks last in the building (42 versus a best of 56). The latest certificate (October 2020) shows an E (score 42), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since January 2010. Between certificates, main heating went from Poor to Average; while hot-water efficiency dropped from Average to Very Poor. The recommended improvements would lift it to C (score 71), a 2-band jump. Main heating runs on electricity.
At 40 m² it sits well below the postcode median (59 m² across 52 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs).
Everything you need to know about 129a
The true value, the hidden risks and the full sale history, in one report.
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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 system changed
Roof insulation improved
Ventilation system changed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has no mains gas supply, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
129a has no planning applications on record.
But the area is active
8 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
129a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£178,000
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 BN11 4DP: £337,500 (2025–2023).
Nearby sales in BN11 4DP
Versus other Clifton Road homes
129a is notably below the street on epc rating.
EPC Rating
42 (E)
Street avg 63 (D)
Floor Area
40 m²
Street avg 47 m²
CO₂ Emissions
4.7 t/year
Street avg 2.5 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
Everything you need to know about 129a
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
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Clifton Road — bus stop.
Closest school
0.2 km
Heene CofE Primary School. 23 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
53.2dB
Night-time· 23:00 – 07:00
42.8dB