33 Cedars Avenue Rickmansworth Hertfordshire WD3 7AW Data via plota.co.uk

26/0494/FUL - Full Application Approved

Proposal

Construction of single storey rear extension and first floor side extension Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
24 Mar 2026
✓
Validated
16 Apr 2026
✓
Consultation
20 Apr 2026
✓
Approved
12 Jun 2026

Approved on 12 Jun 2026 · Delegated Decision · Last checked 6 Jul 2026

Site constraints 4

Flood zone 3, rivers and sea
High chance: a 1 in 100 or greater annual chance from rivers, or 1 in 200 from the sea. Any development here needs a flood risk assessment. Defences are not counted.
The Environment Agency flood map for planning. Homes in zone 3 must also pass the sequential test. Surface water flooding is a separate map.
Flood map ↗
Rickmansworth, Cedars Avenue conservation area
Demolition needs planning permission and permitted development is restricted.
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 ↗
Local nature reserve about 194 m away: Rickmansworth Aquadrome
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
Also on the record
Inside the Rickmansworth built-up area.
Not affected
Not green belt · No scheduled monument at the site

Checked on 11 September 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. 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 1

Last sold for £440,000 in January 2005. Detached house, freehold.

21 January 2005£440,000

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

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Important details

Application type
Full Application
Postcode
WD3 7AW
Received
24 Mar 2026
Validated
16 Apr 2026
Ward
Rickmansworth Town
Parish
Batchworth Community Council
Case officer
Show
Target decision
11 Jun 2026
Decision
approved
Decision date
12 Jun 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Tony Booth

How this decision compares

Decided in 57 days from validation, about the council's usual 54 days. Approved, as 91% of extensions here are.

83%decided within 8 weeks
91%approved
486decided in the last year

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

Consultation & key dates

Comments by
9 May 2026
Site or press notice
20 Apr 2026
Env. assessment
No
Three Rivers
Planning Authority Score
7.3/10
Good
#54 of 296 councils
Relevant to this application:
Householder decisions

Three Rivers is faster than most councils at deciding householder applications, ranking #30 out of 296. Only 24% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Householder applications are slightly more likely to be approved here (91%) than the national average (90%).

Faster than most councils
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Three Rivers decision statistics
Based on MHCLG data, the year to March 2026
89%
Overall approval rate
Above avg (87%) #145 of 296
91%
Householder approved
Above avg (90%) #184 of 296
82%
Decided in 8 weeks
Above avg (63%) #30 of 296
24%
Extended time limit
Below avg (41%) #28 of 296
85%
Minor dwellings approved
62 decided (1-9 homes)
63%
Major dwellings approved
8 decided (10+ homes)
94%
Change of use approved
17 decided
819
Total decisions
86 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.