8 Cumberland Avenue Worthing West Sussex BN12 6JX Data via plota.co.uk

AWDM/0711/26 - Certificate Proposed Lawful Use/Dev Approved

Proposal

Application for Certificate of Lawfulness for Proposed single-storey side extension to single dwelling. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
9 Jun 2026
✓
Validated
11 Jun 2026
✓
Approved
22 Jun 2026

Approved on 22 Jun 2026 · Delegated Decision · Last checked 5 Jul 2026

Site constraints 2

Also on the record
Radon affected area, class 3; Inside the Worthing built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

Sales history 1

Last sold for £343,000 in August 2018. Semi-detached house, freehold.

20 August 2018£343,000

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area94 m² (1,012 sq ft)
Energy ratingC (69 out of 100), could reach B
PropertyDetached house, 4 habitable rooms
Built1950 to 1966
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in January 2018, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Important details

Council
Worthing
Application type
Certificate Proposed Lawful Use/Dev
Postcode
BN12 6JX
Received
9 Jun 2026
Validated
11 Jun 2026
Ward
Castle
Case officer
Show
Target decision
6 Aug 2026
Decision
Application Permitted
Decision date
22 Jun 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Horizon Design

How this decision compares

Decided in 11 days from validation, 41 days faster than Worthing's median of 52 for extensions. Approved, as 92% of extensions here are.

76%decided within 8 weeks
92%approved
302decided in the last year

Plota live figures for extensions decided by Worthing in the last twelve months, from validation. Worthing decision record →

Consultation & key dates

Alt. reference
PP-14995453
Planning Portal ref
PP-14995453
Statutory expiry
6 Aug 2026
Env. assessment
No
Worthing
Planning Authority Score
4/10
Below average
#194 of 296 councils
Relevant to this application:
Householder decisions

Worthing is slower than most councils at deciding householder applications, ranking #226 out of 296. Householder applications are slightly more likely to be approved here (94%) than the national average (90%).

Slower than most councils
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Worthing decision statistics
Based on MHCLG data, the year to March 2026
91%
Overall approval rate
Above avg (87%) #105 of 296
94%
Householder approved
Above avg (90%) #124 of 296
53%
Decided in 8 weeks
Below avg (63%) #226 of 296
44%
Extended time limit
Above avg (41%) #188 of 296
72%
Minor dwellings approved
39 decided (1-9 homes)
100%
Major dwellings approved
4 decided (10+ homes)
78%
Change of use approved
36 decided
573
Total decisions
54 refused in the year to March 2026

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.