House extensions in Croydon

Croydon received 1,311 householder applications in the last 12 months - about 25 a week. Rear extensions and dormers are the most common. Of the 990 decided so far, 798 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 312 applications
22 Oct 2026 Awaiting decision 26/02736/LP

144 Littleheath Road South Croydon CR2 7SF

Erection of a hip to gable roof extension and rear dormer, including the insertion of three rooflights to the front roofslope.

LDC (Proposed) Operations edged Croydon
22 Oct 2026 Awaiting decision 26/02735/HSE

144 Littleheath Road South Croydon CR2 7SF

Erection of a part single, part two storey front and side extension and single storey rear extension.

Householder Application Croydon
16 Oct 2026 Awaiting decision 26/02676/FUL

Basement Melrose House 42 Dingwall Road Croydon CR0 2NE

Formation of two new external lightwells to serve the existing basement office space at Melrose House. One existing disabled parking space will be rel...

Full planning permission Croydon
16 Oct 2026 Awaiting decision 26/02669/HSE

8 Copse View South Croydon CR2 8HH

Erection of a single-storey rear and side extension

Householder Application Croydon
15 Oct 2026 Awaiting decision 26/02935/HSE

41 Kingsdown Avenue South Croydon CR2 6QJ

Erection of single storey front extension.

Householder Application Croydon
15 Oct 2026 Awaiting decision 26/02937/GPDO

Floral House 238 Selsdon Road South Croydon CR2 7AA

Demolition of existing rear extension and erection of single storey rear extension projecting out 8 metres, with a maximum height of 3 metres and an e...

Prior Appvl - Class A Larger House Extns Croydon
15 Oct 2026 Awaiting decision 26/02636/HSE

309 Morland Road Croydon CR0 6HF

Formation of a vehicular crossover (dropped kerb) to the front boundary onto Morland Road, with associated hardstanding to the front garden in permeab...

Householder Application Croydon
15 Oct 2026 Awaiting decision 26/02817/GPDO

63 Strathyre Avenue Norbury London SW16 4RF

Erection of a single story rear extension which projects out 6 meters from the rear wall of the original property with an eaves height of 3 meters and...

Prior Appvl - Class A Larger House Extns Croydon
14 Oct 2026 Awaiting decision 26/02832/FUL

N W S House 1E High Street Purley CR8 2AF

External alterations on the front elevation to include the insertion of level access doors and external louvre grilles on the rear elevation.

Full planning permission Croydon
14 Oct 2026 Awaiting decision 26/02850/HSE

11 Copse Hill Purley CR8 4LL

Partial demolition of and alterations to existing extensions; erection of single storey side/rear extension, alterations including new front entrance ...

Householder Application Croydon
14 Oct 2026 Awaiting decision 26/02795/HSE

23 Portnalls Rise Coulsdon CR5 3DA

Alterations, erection of hip to gable and rear dormer extensions and provision of 2x rooflights in front roof slope and second floor window in side el...

Householder Application Croydon
14 Oct 2026 Awaiting decision 26/02614/HSE

60 The Ruffetts South Croydon CR2 7LR

Erection of first floor side extension.

Householder Application Croydon
13 Oct 2026 Awaiting decision 26/02915/HSE

Pine Lodge Firs Road Kenley CR8 5LH

Conversion of an existing garage to a habitable room, part front extension under the existing roof, and alterations to existing fenestrations with ins...

Householder Application Croydon
13 Oct 2026 Awaiting decision 26/02835/HSE

88 Downs Court Road Purley CR8 1BD

Alterations, erection of single-storey front/side extension, single-storey rear/side extension and conversion of existing garage to habitable room

Householder Application Croydon
13 Oct 2026 Awaiting decision 26/02906/GPDO

112 Hermitage Road Upper Norwood London SE19 3JS

Replace existing conservatory with single storey rear extension with length of 4.596 metres, maximum height of 3.512 metres and eave height of 2.36 me...

Prior Appvl - Class A Larger House Extns Croydon
12 Oct 2026 Awaiting decision 26/02891/HSE

38 Brancaster Lane Purley CR8 1HF

Erection of single storey rear extension and raised external terrace and steps to rear garden

Householder Application Croydon
12 Oct 2026 Awaiting decision 26/02666/FUL

5 Godstone Road Purley CR8 2DH

Erection of a single storey rear extension to be used as office space

Full planning permission Croydon
9 Oct 2026 Awaiting decision 26/02884/LP

50 Ashburton Avenue Croydon CR0 7JE

Erection of rear dormer roof extension with solar panels on the dormer roof and insertion of 2 no. rooflights into the front roofslope.

LDC (Proposed) Operations edged Croydon
8 Oct 2026 Awaiting decision 26/02878/LP

61 Galpins Road Thornton Heath CR7 6EN

Rear dormer to main roof pitch.

LDC (Proposed) Operations edged Croydon
8 Oct 2026 Awaiting decision 26/02869/LP

5 Mayfield Crescent Thornton Heath CR7 6DH

Proposed single storey rear extension and rear roof dormer.

LDC (Proposed) Operations edged Croydon
8 Oct 2026 Awaiting decision 26/02880/GPDO

72 Maryland Road Thornton Heath CR7 8DF

Erection of a single storey rear extension which projects out from the rear wall of the original property by 6 metres, with an eaves height of 2.37 me...

Prior Appvl - Class A Larger House Extns Croydon
8 Oct 2026 Awaiting decision 26/02671/LE

25 Grovelands Road Purley CR8 4LB

Retention of single storey side/rear extension

LDC (Existing) Operations edged Croydon
8 Oct 2026 Awaiting decision 26/02849/HSE

11 Copse Hill Purley CR8 4LL

Partial demolition of existing extension; erection of single storey side/rear extension and alterations to existing rear extension

Householder Application Croydon
8 Oct 2026 Awaiting decision 26/02753/GPDO

10 Kenmare Road Thornton Heath CR7 6BN

Erection of a single story rear extension which projects out from the rear of the original property by 4.4 meters, with a height to the eaves of 2.4 m...

LDC (Proposed) Operations edged Croydon
7 Oct 2026 Awaiting decision 26/02860/HSE

South Riding 16A Hook Hill South Croydon CR2 0LA

The construction of a ground floor extension to the existing utility and the construction of a first floor extension to enlarge an existing bedroom.

Householder Application Croydon
7 Oct 2026 Awaiting decision 26/02836/HSE

42 Onslow Gardens South Croydon CR2 9AT

Erection of a two storey side and rear extension and associated roof alterations.

Householder Application Croydon
7 Oct 2026 Awaiting decision 26/02854/HSE

117 Devonshire Way Croydon CR0 8BY

Demolition of a garage, erection of a single storey side and rear extension, enlargement of side dormer with roof alterations

Householder Application Croydon
7 Oct 2026 Awaiting decision 26/02618/HSE

24 Round Grove Croydon CR0 7PP

Erection of a front porch.

Householder Application Croydon
7 Oct 2026 Awaiting decision 26/02857/LP

55 Farley Road South Croydon CR2 7NG

Proposed use of the dwelling house to accommodate up to four young people aged 16/17 receiving care and living together with one permanent resident ca...

LDC (Proposed) Operations edged Croydon
7 Oct 2026 Awaiting decision 26/02852/HSE

20 Furze Road Thornton Heath CR7 8NG

Alterations, conversion of conservatory to single storey rear extension.

Householder Application Croydon
7 Oct 2026 Awaiting decision 26/02851/HSE

20 Furze Road Thornton Heath CR7 8NG

Alterations, erection of rear dormer roof extension, increase in roof height, and insertion of 2x rooflights in front roofslope.

Householder Application Croydon
7 Oct 2026 Awaiting decision 26/02729/FUL

22 - 24 Chipstead Valley Road Coulsdon CR5 2RA

Demolition of part of building, alterations, erection of two/three storey rear extension to provide ancillary space for existing shop and a 1 x two be...

Full planning permission Croydon
6 Oct 2026 Awaiting decision 26/02845/HSE

126 Addiscombe Road Croydon CR0 5PQ

Loft conversion with dormers

Householder Application Croydon
6 Oct 2026 Awaiting decision 26/02844/LP

14 Roxton Gardens Croydon CR0 5AL

Conversion of garage to habitable room

LDC (Proposed) Operations edged Croydon
6 Oct 2026 Awaiting decision 26/02843/HSE

2 Highdaun Drive Norbury London SW16 4LY

Demolition of the existing garage and erection of a part single-storey, part two-storey side and rear extension.

Householder Application Croydon
6 Oct 2026 Awaiting decision 26/02839/HSE

56 Welcomes Road Kenley CR8 5HD

Erection of single storey rear extension and single storey front porch. Alterations.

Householder Application Croydon
6 Oct 2026 Awaiting decision 26/02842/HSE

8 Bishops Road Croydon CR0 3LD

Erection of ground floor rear/side extension.

Householder Application Croydon
6 Oct 2026 Awaiting decision 26/02838/LP

15 Sprucedale Gardens Croydon CR0 5HU

Erection of single-storey rear extension

LDC (Proposed) Operations edged Croydon
6 Oct 2026 Awaiting decision 26/01752/HSE

49 Upfield Croydon CR0 5DR

Formation of new dropped kerb and crossover, demolition of existing low front boundary wall and erection of new low front boundary wall with gates and...

Householder Application Croydon
6 Oct 2026 Awaiting decision 26/01595/HSE

107 Lakehall Road Thornton Heath CR7 7EJ

Retention of outbuilding.

Householder Application Croydon
6 Oct 2026 Awaiting decision 26/02439/HSE

72 Reddown Road Coulsdon CR5 1AL

Erection of two-storey side elevation. Erection of single-storey front extension. Erection of raised rear patio. Formation of additional hardstanding ...

Householder Application Croydon
6 Oct 2026 Awaiting decision 26/02542/FUL

10 Warham Road South Croydon CR2 6LA

Reconfiguration and intensification of an existing 6-unit House in Multiple Occupation (HMO) to a 10-unit HMO (accommodating up to 19 persons), incorp...

Full planning permission Croydon
5 Oct 2026 Awaiting decision 26/02830/HSE

44 Firsby Avenue Croydon CR0 8TN

Erection of a first floor rear extension and a first floor dormer

Householder Application Croydon
5 Oct 2026 Awaiting decision 26/02829/HSE

116 Montpelier Court Kempton Walk Croydon CR0 7XF

Replacement of roof and frames to existing conservatory

Householder Application Croydon
5 Oct 2026 Withdrawn 26 Oct 26/02818/GPDO

23B Grove Wood Hill Coulsdon CR5 2EN

Erection of single storey rear extension with length of 8 metres, maximum height of 3.2 metres and eaves height of 2.93 metres.

Prior Appvl - Class A Larger House Extns Croydon
5 Oct 2026 Awaiting decision 26/02648/FUL

131 St James's Road Croydon CR0 2UW

Proposed replacement of existing timber windows with uPVC double glazed windows to front, side and rear elevations and replacement of rear door to fla...

Full planning permission Croydon
5 Oct 2026 Awaiting decision 26/02321/HSE

10 Nursery Close Croydon CR0 5EU

Conversion of an existing detached outbuilding into ancillary residential accommodation (annexe) (ammended plans)

Householder Application Croydon
2 Oct 2026 Awaiting decision 26/02806/FUL

16 - 18 South End Croydon CR0 1DN

Conversion of ground floor (partial) and upper floors of main building from office use to a 7-person HMO (sui generis). Erection of two-storey rear ex...

Full planning permission Croydon
2 Oct 2026 Awaiting decision 26/02814/LP

8 Bishops Road Croydon CR0 3LD

Erection of rear dormer roof extensions with Juliet balacony, provision of 2x rooflights in front roof slope and removal of chimney.

LDC (Proposed) Operations edged Croydon
2 Oct 2026 Awaiting decision 26/02807/HSE

79 Riddlesdown Road Purley CR8 1DH

First floor rear extension. Installation of two windows to first floor front elevation. Installation of one window to ground floor rear elevation.

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

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