8 Gonville Avenue Croxley Green Rickmansworth Hertfordshire WD3 3BY Data via plota.co.uk
Proposal
Certificate of Lawfulness Proposed Development: Loft conversion including hip to gable roof extension with a rear dormer and installation of front roof lights; removal of chimney stack and construction of an outbuilding. Data via plota.co.uk
Application progress
This application is under consideration - no decision has been issued yet. Plota predicts a decision around 10 Nov 2026, from Three Rivers's recent extensions.
Documents 7
Plans & drawings 6
Site constraints 4
Checked on 18 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 6
Last sold for £625,000 in October 2024. Semi-detached house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Every application in Three Rivers - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Three Rivers
- Application type
- Certificate of Lawfulness - Proposed Use
- Postcode
- WD3 3BY
- Received
- 28 Aug 2026
- Validated
- 17 Sept 2026
- Ward
- Dickinsons
- Parish
- Croxley Green Parish Council
- Case officer
- Show
- Target decision
- 12 Nov 2026
- Decision level
- Delegated
- Applicant
- Show
- Agent
- Show
Decision outlook
Day 17 of the 56-day target. Three Rivers usually decides extensions by day 54.
Plota live figures for extensions decided by Three Rivers in the last twelve months, from validation. Three Rivers decision record →
Public comments
No public comments yet.
Last counted 2 Oct 2026
Consultation & key dates
- Alt. reference
- PP-15185375
- Statutory expiry
- 12 Nov 2026
- Env. assessment
- No
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
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%).
Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
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8 Gonville Avenue Croxley Green Rickmansworth Hertfordshire WD3 3BY
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