Planning application
70 Hillside Avenue Borehamwood Hertfordshire WD6 1HL
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
Single storey rear extension. Depth: 6.00m, Height: 3.75m, Eaves: 2.75 m.
As published by the council, reference 26/0333/PD42
Application record
- Reference
- 26/0333/PD42
- Type
- PD- Prior Approval 42 day (Hsehold ext)
- Status
- Decided
- Decision
- Granted As published: Permitted
- Received
- 12 Mar 2026
- Validated
- 12 Mar 2026
- Decided
- 6 May 2026
- Ward
- Borehamwood Hillside
- Parish
- Elstree & Borehamwood Town Council
- Postcode
- WD6 1HL
Site history
Applications at this address on the Hertsmere register
This site has had 2 applications since 2026: 2 approved, 0 refused.
-
26/0334/CLP Granted
70 Hillside Avenue Borehamwood Hertfordshire WD6 1HL
Conversion of loft to habitable space to include hip to gable roof alterations, rear dormer, 1x front rooflight and removal of chimney stack Certificate of Lawful Development (Proposed).
Timeline
Dates from the published record
-
12 Mar 2026
Received by Hertsmere
-
6 May 2026
Decision issued: Permitted
-
9 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Matteo Sarno Architecture Agent, an architecture practice registered in London
Active · incorporated 2024 · London
6 applications on PlanIndex · across 3 councils
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
12 documents on file for this application
- Delegated report
- Decision
- Daylight and sunlight assessment
- Applicationformredacted
- Existing block plan
- Existing ground and first floor plans
- Existing second floor and roof plans
- Existing elevations and section
- Proposed block plan
- Proposed ground and first floor plans
- Proposed second floor and roof plans
- Proposed elevations and section
Watch members (£5 a month) open the document list from here.
Open the documentsWhat this grant of permission means
Hertsmere granted permission on 6 May 2026, 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 prior approval applications
Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
70 Hillside Avenue Borehamwood Hertfordshire WD6 1HL
Conversion of loft to habitable space to include hip to gable roof alterations, rear dormer, 1x front rooflight and removal of chimney stack Certificate of Lawful Development (Proposed).
Granted Lawful development Loft or dormer Roofing 12 docs -
72 Hillside Avenue Borehamwood Hertfordshire WD6 1HL
Conversion of loft to habitable room with rear dormer, change in roof shape from hipped to gable and 3 rooflights to front. Certificate of lawfulness (Proposed).
Granted Lawful development Loft or dormer 7 docs -
77 Hillside Avenue Borehamwood Hertfordshire WD6 1HQ
Conversion of loft to form habitable space including hip to gable roof alterations, rear dormer and 2 roof lights to front. Certificate of Lawful Development (Proposed).
Granted Lawful development Loft or dormer Roofing 9 docs -
59 Hillside Avenue Borehamwood Hertfordshire WD6 1HQ
Conversion of loft to habitable room with hip to gable roof alterations, rear dormer, new side window, and 3 front rooflights. Certificate of Lawful Development (proposed).
Granted Lawful development Loft or dormer Roofing +1 10 docs -
59 Hillside Avenue Borehamwood Hertfordshire WD6 1HQ
Construction of single storey front, side and rear extensions, following demolition of existing conservatory.
Granted Householder Extension Demolition 11 docsSmall domestic -
59 Hillside Avenue Borehamwood Hertfordshire WD6 1HQ
Single storey front, side and rear extension following demolition of rear conservatory.
Granted Householder Extension Demolition 5 docsSmall domestic
Other prior approval applications
In Hertsmere
-
26/0496/PD56M Granted
Metropolitan House Darkes Lane Potters Bar Hertfordshire EN6 1AG
Change of use from Office (Class E) to Residential (Class C3) for 96 flats.
-
26/0919/PD42 Awaiting decision
77 Manor Way Borehamwood Hertfordshire WD6 1QR
Single storey rear extension. Depth: 6.0m Height: 3.2m, Eaves: 2.4m.
-
26/0911/PD28O Awaiting decision
The Mercure Hotel And Land To South East Tylers Way Watford Hertfordshire WD25 8JH
Demolition of the existing buildings at the Former Mercure Hotel (Application for Prior Notification).
-
26/0075/PD56M Decided
3 Wyllyotts Place Potters Bar Hertfordshire EN6 2JD
Change of use from Class E to Class C3 to facilitate conversion of offices into 5 self contained flats.
-
26/0526/PD42 Granted
20 Kenilworth Drive Borehamwood Hertfordshire WD6 1QW
Single storey rear extension. Depth: 6.00m, Height: 2.95m, Eaves: 2.75m.