70 Hillside Avenue Borehamwood Hertfordshire WD6 1HL
Approved on 6 May 2026
Boundary © HM Land Registry, © Ordnance Survey · details
This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.
Proposal
Single storey rear extension. Depth: 6.00m, Height: 3.75m, Eaves: 2.75 m.
- Received
- 12 March 2026
- Public comments
- 2
- Council
- Hertsmere Borough Council
- Ward
- Borehamwood Hillside
- Agent
- Matteo Sarno Architecture
- ReceivedReceived12 Mar
- ValidatedValidated12 Mar
- Consult.Consultation9 Apr
- TargetTarget Date6 May
- DecidedDecided6 May
Decided in 55 days (council typically 56)
About this application
This is an outline application for a single storey rear extension at 70 Hillside Avenue Borehamwood Hertfordshire WD6 1HL. Hertsmere has handled 952 applications of this type. This one was decided in 55 days. There has been 1 other application at this address. In the past year there have been 87 applications across Borehamwood Hillside. We hold 1,685 applications in total for the WD6 postcode area.
81% of outline applications at Hertsmere Borough Council were approved. Across all application types, the council typically decides in about 8 weeks (median).
Based on decided applications received in the last 3 years.See what's approved near your address
Application details
- Postcode
- WD6 1HL
- Application type
- PD- Prior Approval 42 day (Hsehold ext)
- Scale / size
- Small
- Parish
- Elstree & Borehamwood Town Council
Planning application dates
- Date validated
- 12 March 2026
- Consultation expiry
- 11 April 2026
- Consultation start
- 19 March 2026
- Consultation end
- 9 April 2026
- Neighbour consultation start
- 19 March 2026
- Neighbour consultation end
- 11 April 2026
- Last date for comments
- 11 April 2026
- Target decision date
- 6 May 2026
Applicant and agent
- Agent
- Matteo Sarno Architecture
- Architect profile
- MATTEO SARNO ARCHITECTURE LTD
- Agent address
- 57 Kelday Heights 2 Spencer Way London E1 2PW
Planning decision
- Statutory period
- 55 days
Additional information
- Planning Portal ID
- PP-14765573
- Documents
- 9
- Constraints
- 9
Site constraints
Designations that overlap or adjoin the site outline.
- Flood zone 1: Low probability (rivers and sea)
Not published by this council, so not checked: Article 4 directions. Ask the council if these matter.
Possibly incomplete for this council: tree preservation orders.
Also checked, none recorded (22)
flood storage areas, conservation areas, listed buildings, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.
A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.
Data © Crown copyright and others · sources and licences
Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.
© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.
© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.
© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.
Contains Ordnance Survey data © Crown copyright and database right 2026.
Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.
Associated applications
- 202612 Mar
Single storey rear extension. Depth: 6.00m, Height: 3.75m, Eaves: 2.75 m.
This applicationApprovedOutline26/0333/PD42 - 202612 Mar
Conversion of loft to habitable space to include hip to gable roof alterations, rear dormer, 1x front…
ApprovedCertificate Proposed Lawful Use/DevFiled alongside26/0334/CLP
Source: Hertsmere
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Around this site
Nearby applications
- 70 Hillside Avenue Borehamwood Hertfordshire WD6 1HL26/0334/CLP · OutlineApproved0.0 mi
- 87 Hillside Avenue Borehamwood Hertfordshire WD6 1HH23/1805/HSE · FullRefused0.1 mi
- 87 Hillside Avenue Borehamwood Hertfordshire WD6 1HH23/1806/HSE · FullRefused0.1 mi
- 43 Oakwood Avenue Borehamwood Hertfordshire WD6 1SS26/0193/HSE · FullApproved0.1 mi
- 119 Hillside Avenue Borehamwood Hertfordshire WD6 1HH26/0088/CLP · OutlineApproved0.1 mi
For applicants and trades
Contractors near this project
Find contractors for extensions near this site- Ihl Builders LtdBorehamwoodNew BuildsExtensions0.1 mi
- JFL Building LtdElectrician0.1 mi
- K H Electrical (UK) LtdElectrician0.2 mi
- Fireplace Studio 21Solid Fuel Heating0.2 mi
What's been approved on your street?
See what the council approved and refused near this address for the project you have in mind, and the rules that apply here.
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