39 Cassiobury Drive Watford WD17 3AA Data via plota.co.uk

26/00153/FULH - Full householder Approved

Proposal

Erection of two storey front extension Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
24 Feb 2026
✓
Validated
27 Feb 2026
✓
Approved
23 Apr 2026

Approved on 23 Apr 2026 · Delegated Decision · Last checked 5 Jul 2026

Associated applications 2

Site constraints 4

Registered park or garden 33 m away: Cassiobury Park
Its setting is a consideration for work nearby.
Registered parks and gardens, battlefields, world heritage sites and protected wrecks are designated heritage assets: harm needs clear and convincing justification.
Historic England ↗
Also on the record
Conservation area 82 m away: Civic Core; Inside the Watford (Watford) built-up area; Green belt 33 m away: London.
Not affected
Outside flood zones 2 and 3 · No listed building at the site · No scheduled monument at the site

Checked on 30 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.

Sales history 3

Last sold for £974,500 in September 2019. Detached house, freehold.

19 September 2019£974,500
2 March 2009£450,000
28 August 1997£22,000

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

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Important details

Council
Watford
Application type
Full householder
Postcode
WD17 3AA
Received
24 Feb 2026
Validated
27 Feb 2026
Ward
Park
Case officer
Show
Decision
Conditional Planning Permission
Decision date
23 Apr 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Wren Designs

How this decision compares

Decided in 55 days from validation, 10 days slower than Watford's median of 45 for extensions. Approved, as 80% of extensions here are.

92%decided within 8 weeks
80%approved
315decided in the last year

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

Consultation & key dates

Alt. reference
PP-14728874
Comments by
20 Mar 2026
Env. assessment
No
Watford
Planning Authority Score
6.2/10
Average
#96 of 296 councils
Relevant to this application:
Householder decisions

Watford is faster than most councils at deciding householder applications, ranking #41 out of 296. Only 21% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Watford is also one of the strictest councils - it refuses more householder applications than almost any other, with only 81% approved vs 90% nationally.

One of the strictest councils
only 81% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Watford decision statistics
Based on MHCLG data, the year to March 2026
79%
Overall approval rate
Below avg (87%) #268 of 296
81%
Householder approved
Below avg (90%) #276 of 296
80%
Decided in 8 weeks
Above avg (63%) #41 of 296
21%
Extended time limit
Below avg (41%) #21 of 296
66%
Minor dwellings approved
41 decided (1-9 homes)
100%
Major dwellings approved
5 decided (10+ homes)
43%
Change of use approved
7 decided
526
Total decisions
111 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.

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use