11a, Belsize Road, Worthing, BN11 4RH
About 11a
11a is a two-bedroom semi-detached house in Worthing (BN11 4RH). It has a recorded floor area of 86 m² (around 926 sq ft), construction records dating it to 1900-1929 and council tax band B. Tenure is freehold. The latest certificate (May 2022) shows a D (score 64), on the cusp of jumping into the C band. When first surveyed in March 2011 the rating was G, the property has climbed 3 bands since. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Very Poor to Average and hot-water efficiency went from Very Poor to Good. The recommended improvements would push it to C (score 74). At 86 m² this is the 15th smallest of 32 units on EPC record in the building, where floor areas span 27–233 m². The building's EPC ratings span F to B across 32 units on file. Period features are noted in the property record. The home occupies a cul-de-sac position.
One planning record on file: new windows approved in 2024. Past consents include new windows, meaningful when judging how the property has evolved. Across 2011–2023, sale prices on this property compounded at 8.2% per year. On a £-per-square-foot basis, the last sale (£373/sq ft) was about 109.8% above the typical sold price in the postcode. Most recent transfer: May 2023 at £345,000.
What this property has
Inside
- Bedrooms2
- Dining roomYes
- CloakroomYes
Outside
- Private gardenYes
- Cul-de-sacYes
Building
- TenureFreehold
- Period featuresYes
Everything you need to know about 11a
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Replaced storage heaters with gas boiler
Connected to mains gas supply
Heating controls upgraded for better temperature management
Hot water system upgraded
Single glazing replaced with double or better glazing
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, has been extended more than once, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
1 application on record at 11a, Belsize Road, Worthing, BN11 4RH
- Nov 2024RenovationFullOutcome in report
Installation of replacement Wooden windows to UPVC sash windows
New Windows- Documents
- 17 docs on file
- Reference
- AWDM/1040/24
Unlock 11a, Belsize Road, Worthing, BN11 4RH'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 8 notable nearby
- The 17 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
11a has more than doubled in price since the earliest registered sale in 2011.
£336,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.2% per year over 12 years.
£345,000
Growth on file: 8.2% per year over 12 years.
Sales timeline
14 May 2023Most recent
£345,000
+29.9%over 6 years18 August 2016
£265,500
+96.7%over 5 years9 June 2011
£135,000
Median price across the last 5 sales in BN11 4RH: £320,000 (2025–2020).
Nearby sales in BN11 4RH
29 Belsize Road, Worthing, BN11 4RH
Sold Jun 2025
£320,000Flat 3, 14 Belsize Road, Worthing, BN11 4RH
Sold Jun 2024
£320,000Flat 2, 11 Belsize Road, Worthing, BN11 4RH
Sold Mar 2022
£280,000Flat 2, 14 Belsize Road, Worthing, BN11 4RH
Sold Sept 2021
£218,00010 Belsize Road, Worthing, BN11 4RH
Sold Apr 2020
£570,000
Versus other Belsize Road homes
Price per m² for 11a runs comfortably ahead of the street norm.
Price per m²
£4,012
Street avg £2,304
Floor Area
86 m²
Street avg 73 m²
Habitable Rooms
4 rooms
Street avg 3 rooms
CO₂ Emissions
3.2 t/year
Street avg 3.5 t/year
Everything you need to know about 11a
The true value, the hidden risks and the full sale history, in one report.
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One time fee only - money back guarantee

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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
Belsize Road — bus stop.
Closest school
0.6 km
Heene CofE Primary School. 24 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
51.8dB

Night-time· 23:00 – 07:00
41.0dB






