House extensions in Wiltshire

Wiltshire received 1,163 householder applications in the last 12 months - about 22 a week. Rear extensions and garage works are the most common. If you're planning your own, the applications below show what people nearby applied for and how the council decided.

631 last 90 days
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162 last 30 days
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53 last 14 days

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Showing 50 of 631 applications
PL/2026/04030 2 days ago Under Consultation

Crosstrees, Plough Lane, Kington Langley, Chippenham, SN15 5PW

Proposed kitchen, study and porch extension

Wiltshire
PL/2025/09258 9 Jul 2026 Under Consultation

Out Yonder, Hartfield, Devizes, SN10 5JH

Re-pitch roof of existing building to form loft conversion with rooflights and dormers. Alterations and small extension to ground floor at rear. Rende...

Wiltshire 9 Jul 2026
PL/2026/04004 9 Jul 2026 Under Consultation

Melksham Adventure Centre, Lowbourne, Melksham, SN12 7QU

An infill extension, refurbishment for improved facilities and PV panels fitted to the roof

Wiltshire 9 Jul 2026
PL/2026/03009 9 Jul 2026 Under Consultation

Street Farm, The Street, Kilmington, Warminster, BA12 6RW

A lean to extension added to existing straw barn for the use of storing agricultural machinery.

Wiltshire 9 Jul 2026
PL/2026/04075 9 Jul 2026 Under Consultation

4 Harnwood Road, Harnham, Salisbury, SP2 8DB

Conversion of single garage to kitchen and minor internal alteration to form annexe.

Wiltshire 9 Jul 2026
PL/2026/03365 9 Jul 2026 Under Consultation

145A WESTBURY LEIGH, WESTBURY, BA13 3SU

Proposed balcony on the south end of the house and change the window to a bifold door, to match existing windows

Wiltshire 9 Jul 2026
PL/2026/03926 9 Jul 2026 Under Consultation

8 & 10 SARUM DRIVE, DEVIZES, SN10 5AS

Alterations to approved garage conversion (Planning Ref: PL/2026/00209), including an increase in the height of the attached garage roofs by approxima...

Wiltshire 9 Jul 2026
PL/2026/04001 9 Jul 2026 Under Consultation

Wiltshire College, College Road, Trowbridge, BA14 0ES

Over-cladding and replacement of the windows of the existing Ashton, Broughton, Edington and Arc Theatre buildings. Respraying of the The Kennet build...

Wiltshire 9 Jul 2026
PL/2026/03974 8 Jul 2026 Under Consultation

Napier House, Buller Park, Porton, Salisbury, SP4 0LU

Erection of a front porch and a rear single-storey extension with a new associated chimney.

Wiltshire 8 Jul 2026
PL/2026/03315 8 Jul 2026 Under Consultation

32–34 Gloucester Street, Malmesbury, SN16 0AA

Replace cement render with lime render/wash to the rear elevation and part of the side elevation.

Wiltshire 8 Jul 2026
PL/2026/03865 8 Jul 2026 Under Consultation

Netheravon House, Lower Road, Netheravon, Salisbury, SP4 9SY

Removal of the existing timber outbuilding and erection of a larger replacement timber outbuilding and garage to provide storage for horticultural and...

Wiltshire 8 Jul 2026
PL/2026/03802 8 Jul 2026 Under Consultation

White Rose Cottage, 39 The Street, All Cannings, Devizes, SN10 3PA

Replacement of casement windows within existing frames (retrospective); replacement French window (retrospective)

Wiltshire 8 Jul 2026
PL/2026/03014 8 Jul 2026 Under Consultation

147 Woodcock Road, Warminster, BA12 9EZ

Proposed erection of a timber privacy fence above the existing front boundary wall

Wiltshire 8 Jul 2026
PL/2026/02899 8 Jul 2026 Under Consultation

Norton Manor, Norton, Malmesbury, SN16 0JN

Internal alterations to remove a wall in a room off the kitchen to open up space and open up original fire place

Wiltshire 8 Jul 2026
PL/2026/03618 8 Jul 2026 Under Consultation

14, 16 & 18, West Street, Wilton, SP2 0DF

Internal and external alterations associated with change of use of No14, formation of loft apartment in attic of Nos. 16/18: subdivision of the existi...

Wiltshire 8 Jul 2026
PL/2026/03639 8 Jul 2026 Under Consultation

5 The Priory, Latton Wharf, Cricklade, Swindon, SN6 6DG

The stationing of a mobile home within the residential curtilage of a dwellinghouse, for purposes ancillary to the Class C3 residential use of the mai...

Wiltshire 8 Jul 2026
PL/2026/03868 8 Jul 2026 Under Consultation

61 Coomb View, Corton, Warminster, BA12 0SZ

Proposed new entrance and drive

Wiltshire 8 Jul 2026
PL/2026/03796 7 Jul 2026 Under Consultation

Vernal Orchard, London Road, Box, Corsham, SN13 8NA

Extension to dwelling by adding one storey; rebuilding conservatory, and associated works

Wiltshire 7 Jul 2026
PL/2026/03963 7 Jul 2026 Under Consultation

East Meadow, Lea, Malmesbury, SN16 9PA

External cladding, change of roof covering, reconfiguration of driveway

Wiltshire 7 Jul 2026
PL/2026/02081 7 Jul 2026 Under Consultation

1C Main Street, Keevil, Trowbridge, BA14 6LT

Loft Conversion with Velux roof lights. Addition of gable window

Wiltshire 7 Jul 2026
PL/2026/03907 7 Jul 2026 Under Consultation

23 Whitehill, Bradford On Avon, BA15 1SQ

Refurbish existing garage to garden studio and storage including an A frame roof, wood cladding and new window.

Wiltshire 7 Jul 2026
PL/2026/03666 6 Jul 2026 Under Consultation

Little Thatch, Harris Lane, Easton Royal, Pewsey, SN9 5LX

Conversion of bedroom to bathroom, insertion of cloakroom within existing boot room, and new porch over kitchen door.

Wiltshire 6 Jul 2026
PL/2026/03755 6 Jul 2026 Under Consultation

23 Vicarage Street, Warminster, BA12 8JG

Replace 5 non-original single-glazed windows with bespoke timber sliding sash windows to match the original design.

Wiltshire 6 Jul 2026
PL/2026/03608 6 Jul 2026 Under Consultation

5 Lowmead, Trowbridge, BA14 8SX

Rear extension with apex roof matching the front of the property and a small area of flat roof.

Wiltshire 6 Jul 2026
PL/2026/02822 6 Jul 2026 Under Consultation

5 Edreds Court, Horsebrook, Calne, SN11 8BA

External alterations to insert a first-floor side elevation window and to replace fenestration and fascia boards.

Wiltshire 6 Jul 2026
PL/2026/03516 3 Jul 2026 Under Consultation

3 Field House, Pickwick, Corsham, SN13 0JB

Loft conversion with front dormers

Wiltshire 3 Jul 2026
PL/2026/03938 3 Jul 2026 Under Consultation

WEIR FARM HOUSE, THE WEIR, BROAD HINTON, SWINDON, SN4 9NE

Replace existing conservatory with a Orangery

Wiltshire 3 Jul 2026
PL/2026/03826 3 Jul 2026 Under Consultation

Brookside Cottage, Tytherton Lucas, Chippenham, SN15 3RN

Extension to Dwelling

Wiltshire 3 Jul 2026
PL/2026/03914 2 Jul 2026 Under Consultation

10 Balmoral Road, Trowbridge,, BA14 0JS

Single storey rear extension and first floor side extension to a dwelling

Wiltshire 2 Jul 2026
PL/2026/03884 2 Jul 2026 Under Consultation

13 Meadland, Corsham, SN13 9DU

First floor side extension over store, utility and kitchen

Wiltshire 2 Jul 2026
PL/2026/03864 2 Jul 2026 Under Consultation

Waters Edge, Derryfields, Ashton Keynes, Swindon, SN6 6PA

Remodelling of existing dwelling to incorporate two-storey and single-storey side extensions, dormer windows, external alterations and associated work...

Wiltshire 2 Jul 2026
PL/2026/03915 2 Jul 2026 Under Consultation

5 Elcot Close, Marlborough, SN8 2BB

New extensions and internal alterations to the existing dwelling house, altered parking arrangements, a new garage outbuilding with ancillary accommod...

Wiltshire 2 Jul 2026
PL/2026/04150 2 Jul 2026 Under Consultation

The Old Rectory, Church Street, Mere, Warminster, BA12 6DS

Sundry internal and external repairs and alterations to include replacement and insertion of roof windows, replacement windows and doors, enlarge open...

Wiltshire 2 Jul 2026
PL/2026/03612 2 Jul 2026 Under Consultation

2 Piplar Ground, Bradford On Avon, BA15 1XF

Construction of workshop building, replacement wall, alterations to main building, enclosure of front porch, change of garage door to window.

Wiltshire 2 Jul 2026
PL/2026/03798 2 Jul 2026 Under Consultation

The Old Rectory, Church Street, Mere, Warminster, BA12 6DS

Sundry internal and external repairs and alterations to include replacement and insertion of roof windows, replacement windows and doors, enlarge open...

Wiltshire 2 Jul 2026
PL/2026/03831 2 Jul 2026 Under Consultation

14 Happy Land, Ashton Keynes, Swindon, SN6 6PN

Demolition, Proposed Extensions, Alterations and Part Garage Conversion to Form Annexe & Associated Works (Amendment to Consent PL/2023/02674)

Wiltshire 2 Jul 2026
PL/2026/04099 1 Jul 2026 Under Consultation

Beehive House, South Street, Great Wishford, Salisbury, SP2 0NN

New Porch on North Side, New Roofs Over Hall and Kitchen, New South Windows and Door and New North Rooflights. Removal of Former Aga Chimney.

Wiltshire 1 Jul 2026
PL/2026/03852 1 Jul 2026 Under Consultation

Beehive House, South Street, Great Wishford, Salisbury, SP2 0NN

New Porch on North Side, New Roofs Over Hall and Kitchen, New South Windows and Door and New North Rooflights. Removal of Former Aga Chimney.

Wiltshire 1 Jul 2026
PL/2026/04131 1 Jul 2026 Under Consultation

34 WEST VIEW CRESCENT, DEVIZES, SN10 5HE

Single storey extension to replace existing extension, utilising existing adjoining block wall. New proposed construction to be timer framed, insulat...

Wiltshire 1 Jul 2026
PL/2026/03049 30 Jun 2026 Under Consultation

4 Birch Glade, Park Place, Ashton Keynes, Swindon, SN6 6PX

Replacement of existing windows, doors and garage doors as well as enlargement of the existing window opening to form aluminium French doors with glaz...

Wiltshire 30 Jun 2026
PL/2026/03070 30 Jun 2026 Under Consultation

The White Hart Inn, Ford, Chippenham, SN14 8RP

Repair and reinstatement works to the entrance porch, façade and internal fabric following accidental vehicle impact

Wiltshire 30 Jun 2026
PL/2026/03703 30 Jun 2026 Under Consultation

45 The Market Place, Devizes, SN10 1HZ

Replacement of inner lobby entrance door

Wiltshire 30 Jun 2026
PL/2026/03781 30 Jun 2026 Under Consultation

Weather Oak, Moor Hill, Fovant

proposed green house attached to existing garage

Wiltshire 30 Jun 2026
PL/2026/02625 30 Jun 2026 Under Consultation

Fitzmaurice Primary School, Frome Road, Bradford On Avon, BA15 1LE

Erection of a 5m x 5m timber gazebo adjacent to the playground to provide a dedicated outdoor learning space

Wiltshire 30 Jun 2026
PL/2026/03687 30 Jun 2026 Under Consultation

38 High Street, Downton, Salisbury, SP5 3PJ

Due to the ingress of damp into the properties we must remove and rebuild the chimney to match existing dimensions and style with the addition of lead...

Wiltshire 30 Jun 2026
PL/2026/04097 30 Jun 2026 Under Consultation

24 Castle Hill Crescent, Mere, Warminster, BA12 6HL

Demolish Conservatory and construct new rear single storey extension

Wiltshire 30 Jun 2026
PL/2026/04102 30 Jun 2026 Under Consultation

Downs Cottage, Rivar Road, Shalbourne, Marlborough, SN8 3QE

Proposed rear kitchen extension and associated internal alterations

Wiltshire 30 Jun 2026
PL/2026/02670 29 Jun 2026 Under Consultation

Innisfree, Crowe Hill, Limpley Stoke, Bath, BA2 7WR

Basement and ground floor rear extension, side extension and new pool and pool building

Wiltshire 29 Jun 2026
PL/2026/03787 29 Jun 2026 Under Consultation

84 Lowden, Chippenham, SN15 2BS

Raising of roof to match adjoining property and replacement of conservatory section between kitchen and office with conventional building

Wiltshire 29 Jun 2026
PL/2026/03586 29 Jun 2026 Under Consultation

Mary Cottage, 3 The Limes, Church Road, Froxfield, Marlborough, SN8 3LB

Replacing an existing single detached garage with a new detached single garage & carport and replacing the existing front fence with a wall and trelli...

Wiltshire 29 Jun 2026
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Frequently asked questions

When do you need planning permission for a house extension?
Single-storey rear extensions up to 4m (detached) or 3m (semi-detached / terraced) are usually permitted development. Two-storey extensions, anything in a conservation area, or larger projects almost always need a planning application.
What's the difference between planning permission and permitted development?
Permitted development rights let you build certain things without applying for planning permission, subject to specified limits. Anything outside those limits — taller, larger, in a protected area — needs full planning permission.
How long does a householder application take?
The statutory target is 8 weeks from validation. Most simple householder extensions are decided within that window; complex or contested cases (especially with objections) can take longer.
Can I get email alerts for new extensions applications in Wiltshire?
Yes. Click "Set up alerts" on this page and you'll get a daily or weekly email listing every new extensions application published by Wiltshire. You can also narrow the alert to a postcode, street, or drawn area.

We check Wiltshire's planning portal daily. New extensions applications appear here within a day of being published.