10a, Basement Flat, Heene Terrace, Worthing, BN11 3NR
About 10a
10a is a mid-terrace house in Worthing (BN11 3NR). It has a recorded floor area of 115 m² (around 1238 sq ft) and construction records dating it to before 1900. At 115 m² this is the largest unit on EPC record across the building (31–115 m²). The building's EPC ratings span F to C across 3 units on file. The latest certificate (November 2021) shows a D (score 55), a step below the typical UK home. When first surveyed in July 2009 the rating was E, the property has climbed 1 band since. Between certificates, lighting went from Average to Very Good and main heating went from Poor to Average. The recommended improvements would push it to C (score 73). Main heating runs on electricity.
At 115 m² the property is well over the postcode median (86 m² across 54 EPCs), placing it in the larger end of the local stock. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include new windows and subdivision, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations. Across 2014–2021, sale prices on this property compounded at 8.1% per year. Today's modelled estimate of £313,000 is 13.8% above the 2021 sale price. Most recent transfer: December 2021 at £275,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Everything you need to know about 10a
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
10a's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
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 £955 · Includes VAT
Planning history
Council records show a subdivision application — the property's legal arrangement has been altered.
2 applications on record at 10a, Basement Flat, Heene Terrace, Worthing, BN11 3NR
- May 2022SubdivisionHeritageOutcome in report
Application for Listed Building Consent for alterations to change from a one bedroom to a 2 bedroom flat - kitchen at the front of the flat.
Listed- Documents
- 16 docs on file
- Reference
- AWDM/2301/21
- More recent applications — locked
- RenovationJun 2022Decision
Unlock 10a, Basement Flat, Heene Terrace, Worthing, BN11 3NR's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (2 on record)
- All 2 applications on this property in full, plus 7 notable nearby
- The 22 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£313,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.1% per year over 7 years.
£275,000
Growth on file: 8.1% per year over 7 years.
Sales timeline
1 December 2021Most recent
£275,000
+76.3%over 7 years13 August 2014
£156,000
Median price across the last 5 sales in BN11 3NR: £405,000 (2025–2023).
Nearby sales in BN11 3NR
Flat 1, 15 Heene Terrace, Worthing, BN11 3NR
Sold Mar 2025
£405,000Flat 2, 17 Heene Terrace, Worthing, BN11 3NR
Sold Dec 2023
£300,000Flat 3, 10 Heene Terrace, Worthing, BN11 3NR
Sold Nov 2023
£580,00017a, Basement Flat, Heene Terrace, Worthing, BN11 3NR
Sold Mar 2023
£272,500Flat 1, 16 Heene Terrace, Worthing, BN11 3NR
Sold Jan 2023
£455,000
Versus other Heene Terrace homes
10a is notably below the street on co₂ emissions.
Price per m²
£2,391
Street avg £3,853
Floor Area
115 m²
Street avg 75 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
6.9 t/year
Street avg 3.4 t/year
Everything you need to know about 10a
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

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The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Heene Terrace — bus stop.
Closest school
0.8 km
St Mary's Catholic Primary School. 20 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
49.8dB

Night-time· 23:00 – 07:00
38.0dB






