Westbank School Lane Washington West Sussex RH20 4AP Data via plota.co.uk

SDNP/26/01801/HOUS - Householder Approved

Proposal

Erection of rear conservatory. Data via plota.co.uk

View original council record ↗Last checked

Application progress

Received
6 May 2026
Validated
18 May 2026
Approved
9 Jul 2026

Approved on 9 Jul 2026 · SDNPA Delegated Decision · Last checked 19 Jul 2026

Site constraints 6

South Downs National Park
The park authority decides applications here. Great weight to conserving the landscape; major development restricted.
Landscape, scenic beauty and wildlife carry great weight, and major development is only allowed in exceptional circumstances.
Agricultural land, grade 3a
Best and most versatile land (grades 1, 2 and 3a). Predicted from the national soil map. The older provisional map agrees.
Where development of farmland is needed, policy prefers poorer land over the best and most versatile (grades 1, 2 and 3a). Three sources: Natural England's post-1988 field surveys, which are definitive where they exist; the Defra predictive map for England (2025) and the Welsh Government predictive map, modelled from the soil map with 3a and 3b split; and the 1970s provisional map, which planners and other services still show, coarser and with grade 3 undivided. Where the provisional and predicted grades disagree, treat the predicted grade as the current estimate and expect an application to carry its own survey.
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Conservation area 19 m away: Washington Conservation Area
The edge of the area; work outside it can still affect its setting.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
Also on the record
7 listed buildings within 150 m; Nature improvement area: South Downs Way Ahead.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England 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.

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Important details

Application type
Householder
Postcode
RH20 4AP
Received
6 May 2026
Validated
18 May 2026
Ward
Storrington and Washington Ward
Parish
Washington Parish Council
Case officer
Show
Target decision
13 Jul 2026
Decision
Approved
Decision date
9 Jul 2026
Decision level
SDNPA Delegated Decision
Applicant
Show
Agent
Window Mart

How this decision compares

Decided in 52 days from validation, 4 days faster than South Downs's median of 56 for extensions. Approved, as 91% of extensions here are.

56%decided within 8 weeks
91%approved
473decided in the last year

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

Consultation & key dates

Env. assessment
No