Planning application
Tarn Dunny Lane Belsize Kings Langley Hertfordshire WD4 9DQ
Works: Extension Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Certificate of Lawfulness Proposed Development: Enlargement of the dwellinghouse by the construction of one additional storey and single storey rear extension
As published by the council, reference 25/1504/CLPD
Application record
- Reference
- 25/1504/CLPD
- Type
- Certificate of Lawfulness - Proposed Use
- Status
- Decided
- Decision
- approved
- Received
- 4 Sep 2025
- Validated
- 4 Sep 2025
- Decided
- 16 Oct 2025
- Ward
- Chorleywood North And Sarratt
- Parish
- Sarratt Parish Council
- Decision by
- Delegated Decision
- Postcode
- WD4 9DQ
Site history
Applications at this address on the Three Rivers register
This site has had 4 applications since 2025: 4 approved, 0 refused.
-
25/1888/FUL Granted
Tarn Dunny Lane Belsize Kings Langley Hertfordshire WD4 9DQ
Construction of single storey rear extension; loft extension including increase in ridge height with front/rear dormers and front rooflights; relocation of entrance door, alterations to fenestration and internal alterations.
-
25/1146/PDT Granted
Tarn Dunny Lane Belsize Kings Langley Hertfordshire WD4 9DQ
Prior approval: Enlargement of the dwellinghouse by the construction of one additional storey (2.65m height) and raising of roof ridge to result in an overall height of 8.33m (Class AA)
-
25/1123/PDE Granted
Tarn Dunny Lane Belsize Kings Langley Hertfordshire WD4 9DQ
Prior Approval: Single storey rear extension (depth 8.00 metres, maximum height 4.00 metres, maximum eaves height 2.75 metres)
Timeline
Dates from the published record
-
4 Sep 2025
Received by Three Rivers
-
16 Oct 2025
Decision issued: approved
-
24 Jul 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
16 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Trade members open them from here.
Open the documentsWhat this grant of permission means
Three Rivers granted permission on 16 October 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
Tarn Dunny Lane Belsize Kings Langley Hertfordshire WD4 9DQ
Prior approval: Enlargement of the dwellinghouse by the construction of one additional storey (2.65m height) and raising of roof ridge to result in an overall height of 8.33m (Class AA)
Granted Outline 17 docsDomestic -
Tarn Dunny Lane Belsize Kings Langley Hertfordshire WD4 9DQ
Prior Approval: Single storey rear extension (depth 8.00 metres, maximum height 4.00 metres, maximum eaves height 2.75 metres)
Granted Outline Extension 16 docsSmall domestic -
Tarn Dunny Lane Belsize Kings Langley Hertfordshire WD4 9DQ
Construction of single storey rear extension; loft extension including increase in ridge height with front/rear dormers and front rooflights; relocation of entrance door, alterations to fenestration and internal alterations.
Granted Full applications Extension Loft or dormer +2 22 docsSmall domestic -
Sunchat Penmans Hill Chipperfield Kings Langley Hertfordshire WD4 9DJ
Demolition of existing conservatory and construction of single storey rear extension; alterations to side fenestration, rooflights
Granted Full applications Extension Loft or dormer +2 10 docsSmall domestic -
6 Belsize Cottages Dunny Lane Belsize Kings Langley Hertfordshire WD3 4NP
Demolition of existing conservatory and construction of single-storey rear extension
Granted Full applications Extension Demolition 9 docsSmall domestic -
6 Belsize Cottages Dunny Lane Belsize Kings Langley Hertfordshire WD3 4NP
Certificate of Lawfulness Proposed Development: Loft conversion including rear dormer with juliet balcony and front rooflights
Granted Lawful development Loft or dormer 6 docs
Other lawful development applications
In Three Rivers
-
26/1035/CLPD Granted
90 Sherborne Way Croxley Green Rickmansworth Hertfordshire WD3 3PG
Certificate of Lawfulness Proposed Development: lLoft conversion including hip to gable extension, rear dormer, and front rooflights and window to side elevation.
-
26/1004/CLPD Granted
39 Bishops Avenue Northwood HA6 3DD
Certificate of Lawfulness Proposed Development: Conversion of garage to habitable accommodation
-
26/0973/CLPD Granted
125 Windmill Drive Croxley Green Rickmansworth Hertfordshire WD3 3FB
Certificate of Lawfulness Proposed Development: Loft conversion including rear dormer and front rooflights.
-
26/1268/CLPD Awaiting decision
36 Bishops Avenue Northwood HA6 3DG
Certificate of Lawfulness Proposed Development: Construction of outbuilding
-
26/1261/CLPD Awaiting decision
4A Parkside Road Northwood HA6 3HL
Certificate of Lawfulness Proposed Development: Loft conversion including rear dormer window and installation of rooflights