House extensions in Dorset

Dorset received 1,483 householder applications in the last 12 months - about 29 a week. Rear extensions and garage works are the most common. Of the 1,022 decided so far, 946 were approved. If you're planning your own, the applications below show what people nearby applied for and how the council decided.

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Showing 50 of 496 applications
Yesterday Out To Consultation P/FUL/2026/04806

Broad Road Farm Beaminster Road Bridport DT6 3TS

Erect conservatory for use as additional restaurant/bar space

Full Planning Application Dorset
Yesterday Out To Consultation P/FUL/2026/04826

Dayspring Nurseries Quarr Cross To Veseys Hole Hill - Lane Buckhorn Weston SP8 5PA

Change of Use from Agricultural to Domestic Use and Erection of Garage/Workshop with Home Office/Storage

Full Planning Application Dorset
Yesterday Out To Consultation P/HOU/2026/04211

Bridge Acre Road To Uploders Uploders DT6 4PF

Construction of a low-impact timber boardwalk through the garden, providing access to a semi-circular deck.

Householder Planning Permission Dorset
2 days ago Out To Consultation P/LBC/2026/04707

21 Market Place Blandford Forum DT11 7AF

Carry out internal and external alterations including installation of air conditioning condensers

Listed Building Consent Dorset
2 days ago Out To Consultation P/HOU/2026/04661

11 Priory Gardens Spetisbury DT11 9DS

Install a first floor dormer window to create additional accommodation, with roof lights and covered balcony. Erect a rear balcony. Insert new window ...

Householder Planning Permission Dorset
2 days ago Out To Consultation P/FUL/2026/04653

Northgate House North Road Sherborne DT9 3JW

Erect triple garage.

Full Planning Application Dorset
8 Sept 2026 Out To Consultation P/HOU/2026/04792

Wildwood Shutes Lane Symondsbury DT6 6HF

Erect garden room extension, replace windows, doors and additional rooflight in east facing roof

Householder Planning Permission Dorset
8 Sept 2026 Out To Consultation P/LBC/2026/04701

The Workshop 1A Mustons Lane Shaftesbury SP7 8AD

Rebuild courtyard wall with patch repairs to the existing wall render.

Listed Building Consent Dorset
8 Sept 2026 Out To Consultation P/HOU/2026/04691

The Workshop 1A Mustons Lane Shaftesbury SP7 8AD

Rebuild courtyard wall with patch repairs to the existing wall render.

Householder Planning Permission Dorset
8 Sept 2026 Out To Consultation P/HOU/2026/04595

44 Cammel Road West Parley BH22 8SB

Erect single storey front extension to extend existing ground floor bedroom with a pitched tiled roof to match existing property. Remove ground floor ...

Householder Planning Permission Dorset
8 Sept 2026 Out To Consultation P/HOU/2026/04105

26 High Street Langton Matravers BH19 3HB

Installation of new timber triple-glazed windows, additional roof insulation with an increased roof height and ridgeline and a combination of internal...

Householder Planning Permission Dorset
7 Sept 2026 Out To Consultation P/LBC/2026/04925

141 High Street Fortuneswell Portland DT5 1JH

Restoration of damaged roof tiles

Listed Building Consent Dorset
7 Sept 2026 Out To Consultation P/HOU/2026/04915

32 Philip Road Blandford Forum DT11 7NR

Demolish existing conservatory and erect replacement conservatory.

Householder Planning Permission Dorset
7 Sept 2026 Out To Consultation P/LBC/2026/04914

Old Malt House Bridge Street Sturminster Newton DT10 1BZ

Carry out external alterations to the retaining wall and install a replacement access door

Listed Building Consent Dorset
7 Sept 2026 Out To Consultation P/LBC/2026/04913

The Thatch Gold Street Stalbridge DT10 2LX

Replacement of Existing Asbestos Slate Roof Covering with Cement Based Roof Covering

Listed Building Consent Dorset
7 Sept 2026 Out To Consultation P/HOU/2026/04912

The Thatch Gold Street Stalbridge DT10 2LX

Replacement of Existing Asbestos Slate Roof Covering with Cement Based Roof Covering

Householder Planning Permission Dorset
7 Sept 2026 Out To Consultation P/HOU/2026/04911

Wyndthorpe Blandford Road To Chescombe Lane Milton Abbas DT11 0BB

Erect two-storey extension, carry out alterations to roof and associated landscaping works

Householder Planning Permission Dorset
7 Sept 2026 Out To Consultation P/HOU/2026/04881

161 Springdale Road Corfe Mullen BH21 3QQ

Conversion of a bungalow to a two storey house. Erect two storey side and front extension & new boundary wall. Conversion of garage to additional anci...

Householder Planning Permission Dorset
7 Sept 2026 Out To Consultation P/HOU/2026/04800

Greenlands House Horton Road Woodlands BH21 8NB

Erect Replacement Conservatory Extension

Householder Planning Permission Dorset
7 Sept 2026 Out To Consultation P/FUL/2026/04780

Rear Flat 15-17 Institute Road Swanage BH19 1BT

Replacement sash windows

Full Planning Application Dorset
4 Sept 2026 Out To Consultation P/HOU/2026/04909

Hillview Corscombe Dorchester DT2 0NU

Erect replacement garage/outbuilding (Demolish garage)

Householder Planning Permission Dorset
4 Sept 2026 Out To Consultation P/HOU/2026/04908

6 Duncliffe Close Stalbridge DT10 2NX

Erect Garage Extension

Householder Planning Permission Dorset
4 Sept 2026 Out To Consultation P/VOC/2026/04907

Summer Lodge Church Farm Estate Church Street West Stour Gillingham SP8 5FT

Change of use of land from agricultural to residential. Erect garage workshop with home office above (With Variation of condition 2 of planning permis...

Variation of Condition Dorset
4 Sept 2026 Out To Consultation P/FUL/2026/04906

Blackberry Farm Hartley Street Hermitage DT2 7BB

Erection of greenhouse

Full Planning Application Dorset
4 Sept 2026 Out To Consultation P/FUL/2026/04804

Rectory Farm East Chaldon Road Winfrith Newburgh Dorchester DT2 8DJ

Replacement and repair of thatched roof

Full Planning Application Dorset
4 Sept 2026 Out To Consultation P/LBC/2026/04803

Rectory Farm East Chaldon Road Winfrith Newburgh

Replacement and repair of thatched roof

Listed Building Consent Dorset
4 Sept 2026 Out To Consultation P/LBC/2026/04731

Castle Cottage Castle Lane Okeford Fitzpaine DT11 0RL

Remove timber porch, door and door frame. Replace with identical porch, door and frame.

Listed Building Consent Dorset
4 Sept 2026 Out To Consultation P/VOC/2026/04667

Well Cottage Water Lane Winterborne Houghton DT11 0PE

Change of use of summer house to dwelling (Retrospective) (with variation of conditions 2 & 3 of planning permission, P/FUL/2020/00032 to allow use as...

Variation of Condition Dorset
4 Sept 2026 Out To Consultation P/HOU/2026/04310

Slate House Common Lane East Stour SP8 5NB

Erect First floor extension with Juliet balcony. Demolish existing timber garage and erect new double garage and single car port with office above

Householder Planning Permission Dorset
4 Sept 2026 Pending P/HOU/2026/04823

Willow Cottage Lurmer Street Fontmell Magna SP7 0NT

Erect a wooden gazebo and wooden pergola on an existing concrete pad.

Householder Planning Permission Dorset
4 Sept 2026 Pending P/HOU/2026/04629

11 Doncaster Road Weymouth DT4 9JQ

Replace a single-storey, flat roof side extension with a rear and side, single-storey, lean-to wrap round extension

Householder Planning Permission Dorset
3 Sept 2026 Out To Consultation P/FUL/2026/04836

Broad Road Farm Beaminster Road Bridport DT6 3TS

Siting of shepherds hut for holiday accommodation

Full Planning Application Dorset
3 Sept 2026 Pending P/LBC/2026/04659

81 Salisbury Street Blandford Forum DT11 7PY

Remove existing North-East aspect lean to roof covering and set aside for re-use. Replace 4no existing roof windows with a pair of Conservation roof w...

Listed Building Consent Dorset
3 Sept 2026 Pending P/HOU/2026/04599

1A Pepper Hill Shillingstone Blandford Forum DT11 0TD

Erect a garage.

Householder Planning Permission Dorset
3 Sept 2026 Pending P/FUL/2026/04559

Unit 1 Pymore Mills Industrial Estate Pymore Road Bridport DT6 5PJ

Proposed renovation and upgrade of existing building envelope including recladding and roof replacement

Full Planning Application Dorset
3 Sept 2026 Pending P/HOU/2026/02952

7 Hornbeam Close Weymouth DT4 9UJ

Erect a first floor extension over garage

Householder Planning Permission Dorset
2 Sept 2026 Out To Consultation P/HOU/2026/04813

Haere Mai Lower Sea Lane Charmouth DT6 6LH

Erect replacement conservatory

Householder Planning Permission Dorset
2 Sept 2026 Out To Consultation P/HOU/2026/04812

16 Sundew Close Weymouth DT4 7UD

Erect single storey rear extension

Householder Planning Permission Dorset
2 Sept 2026 Out To Consultation P/FUL/2026/04205

Wey Meadow House Nottington Lane Weymouth DT3 4BH

Formation of a new vehicular access to serve an existing dwelling with associated works

Full Planning Application Dorset
2 Sept 2026 Pending P/HOU/2026/04827

10 York Close Charminster DT2 9QJ

Garage conversion.

Householder Planning Permission Dorset
2 Sept 2026 Pending P/HOU/2026/04793

1 Centre Cottages Green Pit Knapp Wootton Fitzpaine DT6 6NB

Replacement of existing extension

Householder Planning Permission Dorset
2 Sept 2026 Out To Consultation P/HOU/2026/04801

8 Boswells Close Bere Regis BH20 7JE

Single storey front extension. Demolish conservatory and replace with terrace. Relocate front door and minor window alterations.

Householder Planning Permission Dorset
2 Sept 2026 Pending P/HOU/2026/03789

313 New Road Ferndown BH22 8EJ

Erection of up to 2m high rendered block boundary wall with stone detailing and entrance gates to the front boundary

Householder Planning Permission Dorset
2 Sept 2026 Out To Consultation P/FUL/2026/04686

Hut 5 Field 768 Access Track To Fields 758 And 766 To 769 Portland Bill Portland

Dismantle existing structure and replace with timber clad hut

Full Planning Application Dorset
2 Sept 2026 Out To Consultation P/HOU/2026/04562

4 Harmony Terrace Swanage Road Studland BH19 3AG

Erect single storey rear & side extension. Install dormer to the first floor. Extend outbuilding to form garden room

Householder Planning Permission Dorset
2 Sept 2026 Out To Consultation P/HOU/2026/04371

2 Purbeck Close Lytchett Matravers BH16 6DE

Raise roof to create first floor habitable living accommodation with dormer and erect front porch and close board fencing

Householder Planning Permission Dorset
1 Sept 2026 Pending P/HOU/2026/04811

Button House Ryalls Farm Stalbridge DT10 2SL

Erect single storey front extension

Householder Planning Permission Dorset
1 Sept 2026 Pending P/HOU/2026/04762

Handfast House Ferry Road Studland BH19 3AQ

Demolition of existing single skin garage on raft. Erect two storey extension comprising garage on footings with a bedroom and bathroom over.

Householder Planning Permission Dorset
1 Sept 2026 Out To Consultation P/HOU/2026/04779

17 Ballard Close Lytchett Matravers BH16 6EW

Erect single storey rear extension, front extension and garage extension. Conversion of existing garage to create an en-suite.

Householder Planning Permission Dorset
1 Sept 2026 Under Officer Consideration P/CLP/2026/04759

Swyre Cross B3157 Back Lane To Clay Lane Swyre DT2 9DA

Erect an art studio at rear of property

Certificate of Lawful Use Proposed Dorset
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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, whether taller, larger or 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 those drawing a lot of comments, can take longer.
Can I get email alerts for new extensions applications in Dorset?
Yes. Click "Set up alerts" on this page and you'll get a daily or weekly email listing every new extensions application published by Dorset. You can also narrow the alert to a postcode, street, or drawn area.

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