House extensions in Monmouthshire
Monmouthshire received 353 householder applications in the last 12 months - about 7 a week. Garage works and rear extensions are the most common. Of the 245 decided so far, 236 were approved. If you're planning your own, the applications below show what people nearby applied for and how the council decided.
Rose Cottage Beacon Road Trellech Monmouthshire NP25 4PS
Demolition of existing single storey structures. Construction of new 2 storey side extension and dormer enlargement to bathroom.
Bridge Cottage Glynwood Lane Chapel Hill Tintern NP16 6TH
Extend front porch either side of existing, replacing existing glass roof with a fully insulated tile roof to match existing house. To take down stone...
38 North Street Abergavenny Monmouthshire NP7 7ED
Demolition of existing relatively recent single storey extension and upvc conservatory and construction of two storey extension to the rear to provide...
The Knoll Monmouth Road Usk Monmouthshire NP15 1SF
Removal of existing roadside hedge and erection of reclaimed brick boundary wall with stone coping, replacement vehicular entrance with piers and gate...
35 Leechpool Holdings Portskewett Monmouthshire NP26 5TZ
Proposed two storey side extension.
Property Known As Oxpool Barn Argoed Road Earlswood Shirenewton Monmouthshire
Retention of a 2.9 x 1.8m monopitch timber shed housing borehole and solar equipment
Lower Grove Grove Road Newcastle NP25 5NT
Proposed modest link extension to connect annex to main dwelling and associated works.
The Perrogs Road From Mitchel Troy Road To Penrhos Road Cwmcarfon NP25 4PL
Householder planning permission for single-storey rear extension and single-storey side extension, with extension to the entrance, internal alteration...
Golden Hill Farm Itton Road St Arvans Monmouthshire NP16 6DL
Small lean to on the side of an existing agricultural steel framed building.
4 Woodbine Gardens Magor Monmouthshire NP26 3EZ
Seeking permission to put up a fence for privacy and noise reduction from the road on my property.
22-25 St Andrews Crescent Abergavenny Monmouthshire NP7 6HL
Proposed block of 4no. storage sheds of serve existing flats
18 Holywell Road Abergavenny Monmouthshire NP7 5LR
NMA ref DM/2025/01353 Replacing existing conservatory and utility room with garden room and shower/utility room.
Broadlands Llantilio Crossenny Village Thoroughfare Llantilio Crossenny Monmouthshire NP7 8SU
New porch, external render, cladding, garage doors and entrance gate/ boundary treatment.
New Mills Farm Hoop Road To Pilstone House Whitebrook Monmouthshire NP25 4TY
In-ground swimming pool and associated canopy/pump cabin as replacement to existing above ground swimming pool.
Yew Tree Cottage Cefn Coed Bach Kingcoed Monmouthshire NP15 1DS
Single storey rear extension.
Nationwide Abergavenny 21 High Street Abergavenny Monmouthshire NP7 5YN
Facade, roof and internal remedial repairs to the entire building, following property survey.
24 Coopers Way Llanfoist Monmouthshire NP7 9LZ
A single story rear house extension
Far Barn Glen Farm To Ruthlin Mill St Maughans Monmouthshire NP25 5QQ
Single storey extension to create orangery to rear of property
4 Pen Y Pound Court Abergavenny Monmouthshire NP7 7RJ
Proposed first floor balcony to rear elevation.
Wainfield Cottage Wainfield Lane Gwehelog NP15 1RG
Proposed ground and first floor extension to provide additional living accommodation.
The Old Vicarage Llanover Road Llanover Monmouthshire NP7 9BY
Single storey detached garden building to be used as home gym.
Caldicot Leisure Centre Mill Lane Caldicot Monmouthshire NP26 4BN
The extension and alteration of the existing leisure centre to provide new and improved leisure opportunities. Building facade alterations. Additional...
Ynys Hafod 20 New Market Street Usk Monmouthshire NP15 1AT
Reinstatement of attic ceilings and walls following their unauthorised removal.
Tyr Ynys Fach 3 New Cottages A472 Little Henrhiw To The Island Rhadyr Llanbadoc Monmouthshire NP15 1PY
Construction of shed at the rear of a dwelling house on retained land (retrospective).
Colonels Barn Park Farm New Mill Road Whitebrook Monmouthshire NP25 4TY
Proposed demolition of former agricultural building and replacement with purpose built annexe building to provide ancillary accommodation to main dwel...
19 Ridge Way Wyesham Monmouth Monmouthshire NP25 3JX
Erection of a single-storey side extension.
Sunnybank House 30 Monmouth Road Abergavenny Monmouthshire NP7 5HL
Demolition/Removal of existing garden room replacement with new.
Alma House Monmouth Road Raglan Monmouthshire NP15 2ET
Proposed conversion and single storey 'Orangery' extension to the existing detached barn, for the purposes of additional living accommodation at Alma ...
2 School Cottages Mathern Road Mathern Monmouthshire NP16 6JG
Internal ground floor alterations and single storey rear flat roof extension with master bedroom access to first floor small garden terrace.
13 Cwm Fagor Road Devauden Monmouthshire NP16 6PJ
Previous Planning application DM/2026/00109 Further enlargement of approved rear single storey extension to extend the full width of the house.
Orchard Cottage Rockfield Road Rockfield Monmouthshire NP25 5SY
Amendment to materials on utility room (Amendment to DM/2026/00619)
1 Cwrt Bryn Derwen Usk Monmouthshire NP15 1QN
Installation of a 5.2m wide, sliding entrance gate, together with a 1.4m high Photinia 'Red Robin' hedgerow. The proposed gate and hedgerow will form ...
10 Ash Grove Caldicot NP26 4NG
Rear single storey extension and detached garden building.
Saved Cottage Highmoor Hill Road Highmoor Hill Caerwent Monmouthshire NP26 5PF
Single-storey rear extension to the existing detached dwelling, together with internal and external alterations and the conversion of a detached domes...
75 Brecon Road Abergavenny Monmouthshire NP7 7RA
Replacement pool house/plant room for existing outside pool.
1 Deri Road Abergavenny Monmouthshire NP7 5SY
Single storey side extension to dwelling and existing garage.
Llanarth Court Hospital Llanarth Road Llanarth NP15 2YD
Careful and methodical dismantling of the existing bath stone balustrade and wall to the car park to enable scope of essential repair works to be comp...
23 Church Road Caldicot Monmouthshire NP26 4HN
One/Two storey rear and side extensions containing enlarged kitchen and utility room at ground floor with additional bedroom/en suite at first floor .
Orchard Cottage Rockfield Road Rockfield Monmouthshire NP25 5SY
Proposed new garage and garden store with associated works.
Lea Lane Cottage Well Lane Llanfair Discoed Monmouthshire NP16 6RA
Renewal of existing boundary walling.
Coalpits Farm Crick Road Shirenewton Monmouthshire NP16 6LS
Annex to existing dwelling and annex. Improve internal layout and external appearance
9 Holywell Road East Abergavenny Monmouthshire NP7 5LW
Removal of existing detached single story garage and erection of new detached garage.
6 Union Road East Abergavenny NP7 5UW
Raising existing first floor walls to extend existing bathroom.
7 Wallwern Wood Bayfield Chepstow Monmouthshire NP16 5TX
Mod or Removal of Condition 3 for planning app DM/2026/00382
Abergavenny Museum And Castle Castle Street Abergavenny Monmouthshire NP7 5EE
An amendment to the existing outer castle wall (also the boundary wall) is proposed to accommodate a second exit from the grounds of Abergavenny Castl...
4 Vernon Grove Caerwent Monmouthshire NP26 4QU
Convert garage to part of house
Ground Floor Rear Store 30 Lion Street Abergavenny NP7 5NT
1. Outdoor, upcycled shipping container for a kitchen space to replace pop-up kitchen area, using a collapsible gazebo. 2. Change of use for the 1st f...
6 Wyndham Road Abergavenny Monmouthshire NP7 6AF
Proposed two storey extension over existing single storey lean too to create large kitchen living space and master bedroom with associated works.
Steppes Cottage Bryngwyn Road Jingle Street Wonastow Monmouthshire NP25 4DL
Minor change of land levels (terracing) at rear of cottage to provide for remedial works to stop water ingress into dwelling and prevent land slippage...
Maes Coed 6 Black Bear Close Bettws Newydd Monmouthshire NP15 1EQ
Proposed replacement home office being single storey extension and associated works.
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