House extensions in Dorset

Dorset received 934 householder applications in the last 12 months - about 18 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.

534 last 90 days
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161 last 30 days
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79 last 14 days

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Showing 50 of 534 applications
P/FUL/2026/03214 2 days ago Pending

2 Whitecliff Road Swanage BH19 1RJ

Proposed single storey side extension and loft conversion

Dorset
P/HOU/2026/03568 2 days ago Pending

47 Westwood Avenue Ferndown BH22 9HL

Erect a single storey rear extension

Dorset
P/HOU/2026/03703 2 days ago Pending

18 Kingsbere Crescent Dorchester DT1 2DY

Replace flat roof over porch/garage with new lean-to roof. Erect a rear lean-to extension.

Dorset
P/HOU/2026/03741 2 days ago Pending

5 Heathlands Avenue West Parley BH22 8RW

Erect detached single-storey outbuilding with gym and sauna

Dorset
P/CLP/2026/03744 2 days ago Pending

10 Pickard Road Ferndown BH22 8AX

Single storey rear extension

Dorset
P/HOU/2026/03450 9 Jul 2026 Pending

17 Fernlea Avenue Ferndown BH22 8HG

Erect front & side ground floor extension

Dorset 9 Jul 2026
P/VOC/2026/03549 9 Jul 2026 Pending

107A South Street Bridport DT6 3PA

Removal of existing single storey rear extension and construction of larger rear extension (with variation of condition 2 of Planning permission P/HOU...

Dorset 9 Jul 2026
P/VOL/2026/03666 9 Jul 2026 Pending

107A South Street Bridport DT6 3PA

Internal and external alterations for the removal of existing single storey rear extension and construction of larger rear single storey extension (wi...

Dorset 9 Jul 2026
P/HOU/2026/03670 9 Jul 2026 Pending

7 Linden Close West Parley BH22 8RS

Erect single storey rear extension and internal alterations. Conversion of the outbuilding to ancillary residential accommodation

Dorset 9 Jul 2026
P/FUL/2026/03700 9 Jul 2026 Pending

Chickerell Community Library East Street Chickerell Weymouth DT3 4DT

Proposed extension of existing library to create more library floor space, fully accessible disabled W.C., fire exit with level path, private room for...

Dorset 9 Jul 2026
P/HOU/2026/03732 9 Jul 2026 Pending

125 Sandy Lane St Leonards And St Ives BH24 2LQ

Convert loft into living accommodation. Erect porch. Partial garage conversion and internal works

Dorset 9 Jul 2026
P/HOU/2026/03740 9 Jul 2026 Pending

25 Firs Glen Road West Moors BH22 0EB

Demolish existing conservatory. Erect single storey rear extension

Dorset 9 Jul 2026
P/FUL/2026/03190 8 Jul 2026 Pending

38 East Street Wimborne Minster BH21 1DX

Remove existing stretched tent canopy and lean-to timber gazebo. Erect oak framed open sided gazebo with tiled roof and brick chimney including double...

Dorset 8 Jul 2026
P/HOU/2026/03316 8 Jul 2026 Pending

34 Cow Lane Wareham BH20 4RE

To erect a non-permanent polytunnel measuring 4.5m long by 1.8m wide by 1.9m high covering an area of already-cultivated kitchen garden.

Dorset 8 Jul 2026
P/HOU/2026/03665 8 Jul 2026 Pending

65 Reap Lane Portland DT5 2JX

Erect a porch

Dorset 8 Jul 2026
P/HOU/2026/03690 8 Jul 2026 Pending

70 Dewlands Road Verwood BH31 6PN

Erect single storey rear extension

Dorset 8 Jul 2026
P/CLP/2026/03691 8 Jul 2026 Pending

31 Hilltop Road Ferndown BH22 9QT

Lawful Development Certificate to confirm that the erection of an outbuilding and swimming pool incidental to the enjoyment of the dwelling known as 3...

Dorset 8 Jul 2026
P/LBC/2026/03704 8 Jul 2026 Pending

Bay Farm Tarrant Monkton Blandford Forum DT11 8RX

Erect two bay detached garage, repair and re-cladding of existing detached barn building and alternations to windows (Demolish lean-to carport extensi...

Dorset 8 Jul 2026
P/HOU/2026/03705 8 Jul 2026 Pending

Bay Farm Tarrant Monkton Blandford Forum DT11 8RX

Erect two bay detached garage, repair and re-cladding of existing detached barn building and alternations to windows (Demolish lean-to carport extensi...

Dorset 8 Jul 2026
P/HOU/2026/03465 8 Jul 2026 Pending

42 West Borough Wimborne Minster BH21 1NQ

Demolish rear conservatory and erect new single storey side and rear extensions

Dorset 8 Jul 2026
P/VOC/2026/03707 8 Jul 2026 Pending

15 Keswick Way Verwood BH31 6HP

Erect a first floor extension on the front elevation to be tied into existing roof, and erect a detached garage. External alterations and convert gara...

Dorset 8 Jul 2026
P/CLE/2026/03710 8 Jul 2026 Pending

57 Fishweir Fields Bridport DT6 3HF

Existing Rear Conservatory

Dorset 8 Jul 2026
P/HOU/2026/03711 8 Jul 2026 Pending

Wych End Wych Hill Bridport DT6 4JJ

Demolish existing flat roofed Sun Room and erect replacement Sun Room. Construct new steps leading down to lower garden level.

Dorset 8 Jul 2026
P/HOU/2026/03719 8 Jul 2026 Pending

3 East Street Beaminster DT8 3DS

Replace UPVC bay window to west elevation with purpose made timber window Take down and rebuild one chimney Replace timber panel with stonework Remove...

Dorset 8 Jul 2026
P/LBC/2026/03720 8 Jul 2026 Pending

3 East Street Beaminster DT8 3DS

Replace UPVC bay window to west elevation with purpose made timber window Take down and rebuild one chimney Replace timber panel with stonework Remove...

Dorset 8 Jul 2026
P/HOU/2026/03054 7 Jul 2026 Pending

1 Orchard Close Sydling St Nicholas Dorchester DT2 9PF

Erection of single storey extensions & loft conversion

Dorset 7 Jul 2026
P/FUL/2026/03213 7 Jul 2026 Pending

15 Regents Court Victoria Road Swanage BH19 1LY

Erect block of garages, with 5 individual garage spaces

Dorset 7 Jul 2026
P/HOU/2026/03603 7 Jul 2026 Pending

1 South Hill Alderholt SP6 3AS

Demolish conservatory and build new rear extension, remove chimney and fenestration changes

Dorset 7 Jul 2026
P/HOU/2026/03673 7 Jul 2026 Pending

50 Kings Way Lyme Regis DT7 3DU

Demolition of link-detached outbuilding, construction of two storey side extension and formation of parking area

Dorset 7 Jul 2026
P/HOU/2026/03525 6 Jul 2026 Pending

6 Glenwood Road West Moors BH22 0EP

Demolition of existing conservatory. Erect single storey rear extension including integrated covered pergola. Installation of solar panels, air condit...

Dorset 6 Jul 2026
P/VOC/2026/03596 6 Jul 2026 Pending

20 South Street Wareham BH20 4LT

Change of Use from Class E (commercial) to a Class C3 residential 3-bedroom flat, affecting part of the ground floor, first floor, and second floor. I...

Dorset 6 Jul 2026
P/VOL/2026/03602 6 Jul 2026 Pending

20 South Street Wareham BH20 4LT

Change of Use from Class E (commercial) to a Class C3 residential 3-bedroom flat, affecting part of the ground floor, first floor, and second floor. I...

Dorset 6 Jul 2026
P/HOU/2026/03644 6 Jul 2026 Pending

9 Wimborne Road Wimborne Minster BH21 1NP

Erect rear and side extension. Change of materials to previously approved gable.

Dorset 6 Jul 2026
P/CLP/2026/03652 6 Jul 2026 Pending

125 Blackmore Road Shaftesbury SP7 8RL

Certificate of lawfulness to install 3 no. conservation rooflights

Dorset 6 Jul 2026
P/HOU/2026/03656 6 Jul 2026 Pending

5 Beach Gardens Swanage BH19 1PG

Erect two storey rear extension. Install new dormer, patio doors and windows.

Dorset 6 Jul 2026
P/HOU/2026/03417 3 Jul 2026 Pending

Olde Qoins Cottage 34 Slough Lane Upton BH16 5NB

Removal of existing conservatory and lean-to extension; erection of single storey extension to form GF bathroom, utility and kitchen; installation of ...

Dorset 3 Jul 2026
P/LBC/2026/03418 3 Jul 2026 Pending

Olde Qoins Cottage 34 Slough Lane Upton BH16 5NB

Removal of existing conservatory and lean-to extension; erection of single storey extension to form GF bathroom, utility and kitchen; installation of ...

Dorset 3 Jul 2026
P/HOU/2026/03564 3 Jul 2026 Pending

11 All Saints Road Dorchester DT1 1EL

Replacement of existing uPVC windows with new UPVC windows to match the existing. Replacement of bay window in UPVC. Formation of new French doors to ...

Dorset 3 Jul 2026
P/HOU/2026/03533 3 Jul 2026 Pending

Pinecroft 159 Manor Road Verwood BH31 6DX

Enlarge dormer windows and erect ground floor rear extension. Add porch canopy and ground floor windows.

Dorset 3 Jul 2026
P/HOU/2026/03623 3 Jul 2026 Pending

Minster Bungalow Melbury Road Yetminster DT9 6JP

Erect two storey extension

Dorset 3 Jul 2026
P/HOU/2026/03650 3 Jul 2026 Pending

Underone House Kings Road Blandford Forum DT11 7LD

Erect rear single storey extension and access ramp (Demolish existing conservatory)

Dorset 3 Jul 2026
P/HOU/2026/03629 3 Jul 2026 Pending

12 Park Homer Drive Colehill BH21 2SR

Erect single storey rear extension, first floor extension over existing entrance porch. Install rear dormer window, replacement doors and windows and ...

Dorset 3 Jul 2026
P/HOU/2026/03651 3 Jul 2026 Pending

2 Chilbury Gardens Owermoigne DT2 8HR

Raise the ridge of the roof, install rooflights and convert loft space to form bedrooms

Dorset 3 Jul 2026
P/VOC/2026/03621 3 Jul 2026 Pending

Rylstone Main Street Martinstown Dorchester DT2 9JR

Demolish single storey lean-to & construct single storey extension. Construct open porch. Demolish detached garage & construct outbuilding to provide ...

Dorset 3 Jul 2026
P/HOU/2026/03628 3 Jul 2026 Pending

2 Highmore Road Sherborne DT9 4BT

Erect a single storey rear extension (demolish existing conservatory).

Dorset 3 Jul 2026
P/HOU/2026/03528 2 Jul 2026 Pending

167 Golf Links Road Ferndown BH22 8BX

Retain single storey rear extension

Dorset 2 Jul 2026
P/HOU/2026/03500 2 Jul 2026 Pending

Senlac Frog Lane Motcombe SP7 9NY

Erect carport.

Dorset 2 Jul 2026
P/HOU/2026/03523 2 Jul 2026 Pending

11 Sydenham Crescent Wool BH20 6ES

Erect rear detached garage

Dorset 2 Jul 2026
P/HOU/2026/03586 2 Jul 2026 Pending

Yew Tree Cottage High Street Sixpenny Handley Salisbury SP5 5NR

Erect single storey glass link between existing house and annexe.

Dorset 2 Jul 2026
P/LBC/2026/03618 2 Jul 2026 Pending

Hobnail Cottage Main Street Shroton DT11 8QF

Reinstatement works to the ground floor rooms following a surface wate. Works include the removal and replacement of modern timber skirtings, replacem...

Dorset 2 Jul 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 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.