House extensions in Buckinghamshire

Buckinghamshire received 2,434 householder applications in the last 12 months - about 47 a week. Rear extensions and garage works are the most common. Of the 881 decided so far, 708 were approved. If you're planning your own, the applications below show what people nearby applied for and how the council decided.

823
|
258
|
92
Get alerts for Buckinghamshire

Filter applications

Date receivedLast 90 days
Date receivedLast 90 days
Select one year, or two for a range.
Number of homesAny
StatusAny
Application routeAny
Application type1 selected
KeywordsNone
Match

Matches words or phrases in the application address and description.

Showing 50 of 823 applications
Yesterday Registered PL/26/05782/FA

Castle Beams 1 Castle Street Aylesbury Buckinghamshire HP20 2RE

Replacement of existing timber windows with uPVC double glazed flush casement units

Full Application Buckinghamshire
Yesterday Registered PL/26/05981/FA

Cramond 5 Henley Road Marlow Buckinghamshire SL7 2BZ

Partial demolition and conversion of the existing garage building, erection of a detached timber-framed double garage, associated landscaping, new gat...

Full Application Buckinghamshire
2 days ago Registered PL/26/06466/FA

Woodpeckers 8 Portway North Marston Buckinghamshire MK18 3PL

Erection of proposed detached garage to rear of existing property

Full Application Buckinghamshire
2 days ago Registered PL/26/06754/FA

25 Brownswood Road Beaconsfield Buckinghamshire HP9 2NU

Two storey front and single storey side extension, solar panels to south facing roof, air conditioning compressor and air source heat pump

Full Application Buckinghamshire
2 days ago Registered PL/26/06800/FA

Manor Farm House Bishopstone Bishopstone Buckinghamshire HP17 8SF

Proposed internal and external alterations, demolition and rebuilding of existing rear single storey extension, demolition and rebuilding of existing ...

Full Application Buckinghamshire
2 days ago Registered PL/26/07132/FA

32 Gaviots Close Gerrards Cross Buckinghamshire SL9 7EL

Single storey front and rear extensions with two storey extension to the rear.

Full Application Buckinghamshire
2 days ago Registered PL/26/07107/FA

4 Perth Road High Wycombe Buckinghamshire HP13 6XX

Single storey rear extension, outbuilding within the rear garden & new dropped kerb with associated off street parking provision

Full Application Buckinghamshire
8 Sept 2026 Registered PL/26/07157/SA

35 Henry Road Aylesbury Buckinghamshire HP20 1NP

Certificate of lawfulness for proposed single storey rear extension.

Certificate of Lawful Use - Proposed Buckinghamshire
8 Sept 2026 Registered PL/26/07194/FA

7 Grass Hays Aylesbury Buckinghamshire HP21 7AJ

Demolition of existing garage and erection of two storey side extension, single storey front and rear extensions. Existing dropped kerb to be extended...

Full Application Buckinghamshire
8 Sept 2026 Registered PL/26/07261/PNE

57 Ashfield Way Hazlemere Buckinghamshire HP15 7RL

Notification under The Town and Country Planning (General Permitted Development) Order 2015, Part 1 of Schedule 2 Class A for: single storey rear exte...

Buckinghamshire
8 Sept 2026 Registered PL/26/06402/FA

28 Mount Close High Wycombe Buckinghamshire HP12 3PE

Householder application for the construction of a first floor side/rear extension.

Full Application Buckinghamshire
8 Sept 2026 Registered PL/26/06847/FA

29 Rye View High Wycombe Buckinghamshire HP13 6HL

Householder application for additional rooms in the loft space with Velux roof windows.

Buckinghamshire
8 Sept 2026 Registered PL/26/07205/PNE

21 Redshots Close Marlow Buckinghamshire SL7 3LW

Notification under The Town and Country Planning (General Permitted Development) Order 2015, Part 1 of Schedule 2 Class A for erection of single store...

Prior Appr Buckinghamshire
7 Sept 2026 Registered PL/26/06558/FA

The Red House 22 Aylesbury Road Wendover Buckinghamshire HP22 6JQ

Proposed internal and external alterations to include the installation of a through-floor lift, floor repairs, energy efficiency upgrades, structural ...

Full Application Buckinghamshire
7 Sept 2026 Registered PL/26/06705/FA

The Red House 22 Aylesbury Road Wendover Buckinghamshire HP22 6JQ

Proposed loft conversion and internal alterations including the formation of a new staircase arrangement and relocation of bathroom facilities

Full Application Buckinghamshire
7 Sept 2026 Registered PL/26/07136/FA

43 The Poynings Iver Buckinghamshire SL0 9DS

Side extension over the existing garage, incorporating alterations to the existing rear garage roof to accommodate a first-floor addition above; a fir...

Full Application Buckinghamshire
7 Sept 2026 Registered PL/26/07172/FA

126 Main Road Naphill Buckinghamshire HP14 4PZ

Single storey front and side extensions, extension of front drive, small shed and greenhouse to rear garden.

Full Application Buckinghamshire
7 Sept 2026 Registered PL/26/07170/FA

3 Oakfield Close Amersham Buckinghamshire HP6 5TA

Loft conversion with rear dormer and garage conversion

Full Application Buckinghamshire
7 Sept 2026 Registered PL/26/07134/FA

1 Birch Way Chesham Buckinghamshire HP5 3JL

Single storey side extension, replacement porch and garage conversion

Full Application Buckinghamshire
7 Sept 2026 Registered PL/26/07137/FA

47 Horseshoe Crescent Beaconsfield Buckinghamshire HP9 1LJ

Construction of single storey rear extension and changes to fenestration

Full Application Buckinghamshire
7 Sept 2026 Registered PL/26/07191/FA

Uphill Farmhouse Hale Lane Wendover Buckinghamshire HP22 6QR

First floor side extension and internal and external alterations. Changes to fenestration

Full Application Buckinghamshire
7 Sept 2026 Registered PL/26/07173/FA

35 Fremantle Road Aylesbury Buckinghamshire HP21 8EH

Single storey rear extension and alterations to roof

Full Application Buckinghamshire
7 Sept 2026 Registered PL/26/05274/FA

Cromerton Wycombe End Beaconsfield Buckinghamshire HP9 1TY

Relocation of single garage block and changes to approved car parking layout for Plot 4 Cromerton Close and provision of single garage block and chang...

Full Application Buckinghamshire
7 Sept 2026 Registered PL/26/06025/FA

Dovers Farm Frieth Road Frieth Buckinghamshire RG9 6PU

Erection of brick and flint boundary wall at both entrance and exit gates to replace small section of overgrown 2.3 m high hedge at entrance and exit ...

Full Application Buckinghamshire
7 Sept 2026 Registered PL/26/06723/SA

46 Totteridge Drive High Wycombe Buckinghamshire HP13 6JJ

Certificate of lawfulness for proposed enlargement of an existing drop kerb and alterations to the adjacent garden wall.

Buckinghamshire
7 Sept 2026 Registered PL/26/06752/FA

21 Mowbray Road Aylesbury Buckinghamshire HP20 2DQ

Removal of garden room, erection of two storey side extension and single storey rear extension.

Buckinghamshire
7 Sept 2026 Registered PL/26/06891/PNE

11 Churchill Avenue Aylesbury Buckinghamshire HP21 8NF

Notification under The Town and Country Planning (General Permitted Development) Order 2015, Part 1 of Schedule 2 Class A for: single storey rear exte...

Prior Appr Buckinghamshire
7 Sept 2026 Registered PL/26/07148/PNE

34 Cromwell Avenue Aylesbury Buckinghamshire HP19 9PL

Notification under The Town and Country Planning (General Permitted Development) Order 2015, Part 1 of Schedule 2 Class A for erection of single store...

Prior Appr Buckinghamshire
5 Sept 2026 Registered PL/26/06398/FA

Appletreewick Church Lane Wexham Buckinghamshire SL3 6LH

Householder application for the construction of single-storey rear conservatory and extensions. Changes to fenestration (Retrospective).

Full Application Buckinghamshire
4 Sept 2026 Registered PL/26/07097/FA

Golden Broom Broombarn Lane Great Missenden Buckinghamshire HP16 9JD

Single storey rear extension, single storey front porch extension, loft conversion including dormer windows in the front and rear roof slopes, erectio...

Full Application Buckinghamshire
4 Sept 2026 Registered PL/26/07099/FA

6 Coronation Crescent Lane End Buckinghamshire HP14 3DX

Single storey rear extension with flat roof.

Full Application Buckinghamshire
4 Sept 2026 Registered PL/26/07151/FA

6 Oxpen Aylesbury Buckinghamshire HP18 0FN

Conversion of existing garage to habitable accommodation, replacement of garage door with double doors and enlargement of existing window.

Full Application Buckinghamshire
4 Sept 2026 Registered PL/26/07152/FA

93 Dropmore Road Burnham Buckinghamshire SL1 8AY

Existing garage conversion, single storey side and rear extension. Addition of porch and alterations to window design

Full Application Buckinghamshire
4 Sept 2026 Registered PL/26/07126/FA

66 Slough Road Iver Heath Buckinghamshire SL0 0DY

Erection of a first-floor rear extension.

Full Application Buckinghamshire
4 Sept 2026 Registered PL/26/06035/FA

5 Warmstone Close Waddesdon Buckinghamshire HP18 0NR

Construction of 4m x 10m single storey side extension.

Full Application Buckinghamshire
4 Sept 2026 Registered PL/26/06481/SA

Moonrakers Bank Green Bellingdon Buckinghamshire HP5 2UT

Certificate of Lawfulness for proposed single storey rear extension

Certificate of Lawful Use - Proposed Buckinghamshire
4 Sept 2026 Registered PL/26/06764/FA

The Cottage Gibraltar Dinton Buckinghamshire HP17 8TY

Householder application for the removal of an existing garden room and replacement with new garden room.

Buckinghamshire
4 Sept 2026 Registered PL/26/07017/FA

32 Station Road Stoke Mandeville Buckinghamshire HP22 5UL

Householder application for an extension of the front porch and installation of a bay window. Changes to fenestration.

Full Application Buckinghamshire
4 Sept 2026 Registered PL/26/07128/PNE

Mount Skipputt Derehams Lane Loudwater Buckinghamshire HP10 9RR

Notification under The Town and Country Planning (General Permitted Development) Order 2015, Part 1 of Schedule 2 Class A for: single storey rear exte...

Prior Appr Buckinghamshire
4 Sept 2026 Registered PL/26/07106/PNE

125 Hughenden Road High Wycombe Buckinghamshire HP13 5HT

Notification under The Town and Country Planning (General Permitted Development) Order 2015, Part 1 of Schedule 2 Class A for: single storey rear exte...

Prior Appr Buckinghamshire
3 Sept 2026 Registered PL/26/07084/FA

22 Newmer Road High Wycombe Buckinghamshire HP12 4QN

Single storey side and rear extension. Changes to fenestration

Buckinghamshire
3 Sept 2026 Registered PL/26/07089/FA

11 Rosken Grove Farnham Royal Buckinghamshire SL2 3DZ

Ground floor rear infill extension and changes to fenestration.

Buckinghamshire
3 Sept 2026 Registered PL/26/06522/FA

4 The Acre Marlow Buckinghamshire SL7 1UD

Two-storey side extension to a semi-detatched house. Changes to fenestration

Full Application Buckinghamshire
3 Sept 2026 Registered PL/26/06536/SA

18 Rowan Avenue High Wycombe Buckinghamshire HP13 6JA

Certificate of lawfulness for proposed internal and external alterations to the existing outbuilding, including the formation of a stud partition to c...

Certificate of Lawful Use - Proposed Buckinghamshire
3 Sept 2026 Registered PL/26/06784/FA

Overbecks Vache Lane Chalfont St Giles Buckinghamshire HP8 4SD

Construction of greenhouse and tool shed to garden

Full Application Buckinghamshire
3 Sept 2026 Registered PL/26/07016/FA

35 Vicarage Road Marsworth Buckinghamshire HP23 4LT

Householder application for the construction of a single storey front extension and two storey/first floor side extension.

Full Application Buckinghamshire
3 Sept 2026 Registered PL/26/06869/FA

Barn Cottage Wardrobes Lane Loosley Row Buckinghamshire HP27 0RH

Proposed external and internal alterations including reroofing with new clay plain tiles, new timber cladding, new windows and doors

Full Application Buckinghamshire
2 Sept 2026 Registered PL/26/07065/FA

40 Cotswolds Way Calvert Green Buckinghamshire MK18 2FR

Single story rear extension

Buckinghamshire
2 Sept 2026 Registered PL/26/07056/FA

Park Wood House Park Road Stoke Poges Buckinghamshire SL2 4PE

Householder application for the construction of single storey rear extensions following partial demolition of existing extensions, garage conversion w...

Full Application Buckinghamshire
2 Sept 2026 Registered PL/26/07044/FA

White Gates Risborough Road Terrick Buckinghamshire HP17 0UB

Householder application for the demolition of an existing conservatory and single storey side extension. Part single part double storey rear extension...

Full Application Buckinghamshire
Recency
Last 2 weeks
2-4 weeks
1-2 months
Older

Get free email alerts for new extensions applications in Buckinghamshire

Set up alerts

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 Buckinghamshire?
Yes. Click "Set up alerts" on this page and you'll get a daily or weekly email listing every new extensions application published by Buckinghamshire. You can also narrow the alert to a postcode, street, or drawn area.

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