Planning application
DM/2026/00527
4 Hunters Ridge Undy Monmouthshire NP26 3PW
Proposal
We are proposing the construction of a single-storey rear extension to a detached four-bedroom residential property. The extension will project approximately 3 metres from the existing dining room and measure approximately 4 metres in width. The development will increase the internal floor space of the ground floor and is intended to improve the layout and functionality of the existing living space. No additional residential units are proposed.
As published by the council, reference DM/2026/00527
Timeline
Dates from the published record
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22 Apr 2026
Received by Monmouthshire
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3 Jun 2026
Validated
Checked as complete and ready for consideration.
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28 Jul 2026
Added to PlanIndex
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Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What happens while it is decided
The process from here
This application is with Monmouthshire for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
About lawful development applications
How this application type works
A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.
Nearby applications
Within 500 metres
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DM/2026/00657 Granted
Clear Mount Vinegar Hill Undy Monmouthshire NP26 3EJ
One and a half storey side extension containing a family room at ground floor level with mezzanine floor at first floor level. Inclusion of a dressed pennant stone external wall finish to front elevation of an existing side elevation, porch and front elevation of the proposed one and a half storey side extenstion.
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DM/2025/01256 Granted
Clear Mount Vinegar Hill Undy Monmouthshire NP26 3EJ
One and a half storey side extension containing family room at ground floor level with mezzanine floor at first floor level.
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DM/2025/01425 Awaiting decision
2 Heronston Close Undy Monmouthshire NP26 3PD
Propose to take down existing conservatory (shown as the rounded area protruding from the site plan) and replace with an extension. Existing conservatory footprint is 3500m wide x 3000mm deep. Proposed extension is 3500mm wide x 4000m deep. The build is a modular build and hence just the depth of the existing concrete base to the conservatory will need to be extended slightly. The extension meets all permitted development guidance not coming out more than 4000mm from the house, not taking up more than 50% of the garden and not being more than 3000mm at the highest point of the roof. It's height does not exceed that already there.
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DM/2025/01316 Awaiting decision
Apple Tree Cottage Vinegar Hill Undy Monmouthshire NP26 3EJ
Demolish existing cottage and rebuild a new house on approx the same footprint.
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DM/2026/00780 Awaiting decision
Blue Hills Old Stone Lane Undy Monmouthshire NP26 3EJ
Proposed single-storey rear extension, alterations to the existing garage including replacement of the roof with a pitched roof, replacement windows and doors, external alterations and associated works.
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DM/2025/01493 Granted
Windy Ridge Tump Lane Undy Monmouthshire NP26 3BW
NMA relating to planning DM/2023/01304. 2 north facing windows have been reduced in size and one east facing window has been changed to a fully glazed patio door for better access to garden/patio area. A defined section of the south facing wall is reverting back to a brick finish rather than render (samples of the brick finish will be on site from today).
Other lawful development applications
In Monmouthshire
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DM/2026/00895 Granted
1 Raglan Terrace Abergavenny Monmouthshire NP7 9SR
I would like to use our double garage for use as a habitable annexe to Main House, in order to accommodate my daughter and partner who are returning to Abergavenny from Bristol. The garage is currently used as gym, garden room and study
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DM/2026/00611 Granted
6 Piercefield Terrace Devauden Road St Arvans NP16 6EW
Rear single storey extension.
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DM/2026/00541 Granted
12 Castle Wood Usk Monmouthshire NP15 1SR
Partial garage conversion, internal alterations, enlargement of existing side window and new bi fold doors.
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DM/2026/00860 Granted
6 Lilac Drive Rockfield Monmouth Monmouthshire NP25 5DY
The existing dwelling was constructed as a domestic dwelling in or around 2004 and has been in constant use as such since first occupation. Conversion of garage space to for a habitable room.
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DM/2026/00886 Awaiting decision
4 Whitehall Gardens Undy Monmouthshire NP26 3EW
Proposed single storey extension with materials to match existing house.