DM/2026/00748

1. 17 Jun 2026

   Received by Monmouthshire

2. 29 Jun 2026

   Decision issued: Approve

3. 28 Jul 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within five years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

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.

More on lawful development applications in our guide

• DM/2026/00373 Awaiting decision

  26 Cornpoppy Avenue Rockfield Monmouth Monmouthshire NP25 5SD

  Integral garage conversion into domestic accommodation space with the inclusion of bay window. Future proofing of property in view of occupants long term mobility issues.

  23 Mar 2026 110m away Householder
• DM/2026/00328 Granted

  Land At Wheat Field Close Monmouth

  Discharge of Condition no. 3 (Construction Traffic Management plan) and condition no.5 (Construction Environmental Management Plan) of planning consent DM/2021/01700.

  16 Mar 2026 113m away Conditions
• DM/2026/00414 Granted

  14 Cornpoppy Avenue Rockfield Monmouth Monmouthshire NP25 5SD

  Work to be carried between 8am-5pm. Standard conversion of garage to bedroom and window.

  30 Mar 2026 156m away Lawful development
• DM/2026/00727 Granted

  25 Brook Estate Monmouth Monmouthshire NP25 5AN

  1. Swapping a window and door position on ground floor side elevation (SW). 2. Reducing width of extension (down to 3.35m from 3.5m). 3. Addition of a window to ground floor NW elevation. (Amendment to DM/2023/00162)

  11 Jun 2026 188m away Amendments
• DM/2026/00116 Granted

  11 St Maughans Close Rockfield Monmouth Monmouthshire NP25 5BU

  The proposal is to remove the existing conservatory and replace with a single storey flat roof extension

  3 Feb 2026 202m away Householder
• DM/2026/00196 Granted

  18 Rockfield Avenue Monmouth Monmouthshire NP25 5BB

  Single story extension to the rear of the property

  17 Feb 2026 263m away Householder

• 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

  21 Jul 2026 Lawful development
• DM/2026/00611 Granted

  6 Piercefield Terrace Devauden Road St Arvans NP16 6EW

  Rear single storey extension.

  11 May 2026 Lawful development
• 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.

  27 Apr 2026 Lawful development
• 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.

  14 Jul 2026 Lawful development
• DM/2026/00886 Awaiting decision

  4 Whitehall Gardens Undy Monmouthshire NP26 3EW

  Proposed single storey extension with materials to match existing house.

  20 Jul 2026 Lawful development