House extensions in Croydon

Croydon received 965 householder applications in the last 12 months - about 19 a week. Rear extensions and dormers are the most common. Of the 750 decided so far, 605 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 332 applications
Yesterday Awaiting decision 26/02300/HSE

10 Downs Road Coulsdon CR5 1AA

Alterations, erection of replacement roof and provision of roof terrace at rear

Householder Application Croydon
8 Sept 2026 Pending 26/02468/LP

14 Dixon Road South Norwood London SE25 6TZ

Demolition of existing conservatory and erection of a single storey rear extension. Construction of a dormer extension within the rear roof slope and ...

LDC (Proposed) Operations edged Croydon
7 Sept 2026 Pending 26/02346/HSE

71 Haydn Avenue Purley CR8 4AJ

Erection of single-storey rear extension. Alterations to roof form including erection of side roof extension, front and rear dormer roof extensions. R...

Householder Application Croydon
7 Sept 2026 Pending 26/02371/HSE

6 Van Brugh Avenue Coulsdon Croydon CR5 3HZ

Alterations, erection of single-storey rear/side extension and provision of external steps

Householder Application Croydon
7 Sept 2026 Pending 26/02385/HSE

87 Violet Lane Croydon CR0 4HL

Change garage door to windows to match existing and change grarage space to a bedroom

Householder Application Croydon
7 Sept 2026 Pending 26/02448/GPDO

14 Kemble Road Croydon CR0 4JP

Erection of a single storey rear extension which projects out from the original rear wall of the property by 3 metres, with an eaves height of 3.2 met...

Prior Appvl - Class A Larger House Extns Croydon
4 Sept 2026 Pending 26/01423/FUL

Flat 1 117C Waddon New Road Croydon CR0 4JE

Proposed single storey rear extension

Full planning permission Croydon
4 Sept 2026 Pending 26/02352/HSE

64 Crossways South Croydon CR2 8JN

Double storey side Extension and ground floor rear extension

Householder Application Croydon
3 Sept 2026 Awaiting decision 26/00686/HSE

207 Upper Selsdon Road South Croydon CR2 0DY

Erection of single storey rear extension with pergola, garage conversion to habitable and erection of detached outbuilding with open veranda and raise...

Householder Application Croydon
2 Sept 2026 Pending 26/02496/HSE

16 Shaftesbury Lane Coulsdon Croydon CR5 3FS

Erection of part-one, part-two storey rear extension and alterations to garage.

Householder Application Croydon
2 Sept 2026 Pending 26/02494/HSE

15 Cullesden Road Kenley CR8 5LR

Erection of single storey rear extension to garage and conversion of garage into annexe. Alterations.

Householder Application Croydon
2 Sept 2026 Pending 26/02495/HSE

36 Notson Road South Norwood London SE25 4JZ

Erection of two storey side extension and erection of part single, part two storey rear extension (not built in accordance with PP 22/04577/HSE).

Householder Application Croydon
2 Sept 2026 Pending 26/02492/LP

10 Sissinghurst Road Croydon CR0 6NH

Loft conversion with new rear dormer.

LDC (Proposed) Operations edged Croydon
2 Sept 2026 Pending 26/02491/LP

Silver Pine Mowbray Road Upper Norwood London SE19 2RN

Erection of a hip to gable extension and a rear dormer with installation of three rooflight to the front roof slope.

LDC (Proposed) Operations edged Croydon
2 Sept 2026 Pending 26/02176/LP

36 Buller Road Thornton Heath CR7 8QU

Loft conversion

LDC (Proposed) Operations edged Croydon
1 Sept 2026 Pending 26/02469/FUL

11 Dunheved Road South Thornton Heath CR7 6AD

Erection of hip to gable roof extension with front roof light, rear dormer window, alterations to first floor side projection and existing ground floo...

Full planning permission Croydon
1 Sept 2026 Pending 26/02354/GPDO

9 Ingham Road South Croydon CR2 8LT

Erection of a single storey rear extension which projects out from the rear of the original property by 6 metres with an eaves height of 2.5 metres an...

Prior Appvl - Class A Larger House Extns Croydon
1 Sept 2026 Pending 26/02470/LP

3 Dovercourt Avenue Thornton Heath CR7 7LJ

Erection of a rear dormer and installation of three rooflights to the front roof slope.

LDC (Proposed) Operations edged Croydon
1 Sept 2026 Pending 26/02467/HSE

113 Valley Road Kenley CR8 5BY

Alterations, erection of single-storey side/rear extension together with alterations to land levels at rear, retaining walls and external steps

Householder Application Croydon
1 Sept 2026 Pending 26/02479/HSE

77 Wickham Road Croydon CR0 8TB

Erection of an outbuilding with a small area of hardstanding adjacent to the front of the outbuilding to facilitate level access

Householder Application Croydon
1 Sept 2026 Pending 26/02472/HSE

99 Downlands Road Purley CR8 4JJ

Alterations, erection of additional storey with rear dormer window, two-storey side/rear extension, and front porch canopy

Householder Application Croydon
1 Sept 2026 Pending 26/02485/FUL

3 Highdaun Drive Norbury London SW16 4LY

Demolition of existing dwelling and garage, erection of two-storey detached dwelling with accommodation in the roof space, excavation to provide basem...

Full planning permission Croydon
1 Sept 2026 Pending 26/02465/GPDO

11 Field Close South Croydon CR2 9BH

Erection of a single storey rear extension which projects out from the rear wall of the existing property by 5 metres with an eaves height of 2.850 me...

Prior Appvl - Class A Larger House Extns Croydon
1 Sept 2026 Awaiting decision 26/02293/HSE

11 Coningsby Road South Croydon CR2 6QQ

Demolition of the existing garage and erection of a single-storey front, side and rear extension with pitched roof, alterations to the front porch, an...

Householder Application Croydon
31 Aug 2026 Pending 26/02390/LE

Flat First Floor 55 Beatrice Avenue Norbury London SW16 4UW

(Internal alterations to include the conversion of the attic area into habitable accommodation (in so far as it relates to the 'First Floor, 3 bedroom...

LDC (Existing) Use edged Croydon
30 Aug 2026 Pending 26/02321/HSE

10 Nursery Close Croydon CR0 5EU

convertion of an existing detached outbuilding into ancillary residential accommodation (annexe) The outbuilding is currently used as a multi-purpose ...

Householder Application Croydon
28 Aug 2026 Pending 26/02451/LP

37 Zion Road Thornton Heath CR7 8RJ

Erection of an L-shaped dormer and installation of one rooflight to the front roof slope.

LDC (Proposed) Operations edged Croydon
28 Aug 2026 Pending 26/02453/HSE

4A The Drive Coulsdon CR5 2BL

Enlargement of the existing detached garage.

Householder Application Croydon
28 Aug 2026 Approved 26/02046/LP

10 Freemason's Place Croydon CR0 6SS

Erection of a dormer window within the rear roof slope and installation of one roof light in the front roof slope.

LDC (Proposed) Operations edged Croydon
27 Aug 2026 Awaiting decision 26/02331/HSE

14 The Ruffetts South Croydon CR2 7LQ

Demolition of garage. Erection of part 2-storey, part single storey side/rear extensions and associated land levelling works (amended description).

Householder Application Croydon
26 Aug 2026 Pending 26/02427/LP

60 Fairchildes Avenue Croydon CR0 0AL

Erection of a hip-to-gable rear dormer loft conversion, single storey rear extension and all associated works.

LDC (Proposed) Operations edged Croydon
26 Aug 2026 Pending 26/02436/LP

51 Foxley Lane Purley CR8 3EH

Erection of a single-storey side extension and dormer extension on rear roofslope

LDC (Proposed) Operations edged Croydon
26 Aug 2026 Pending 26/02428/FUL

Mayday Hotel 433 London Road Croydon CR0 3PF

Erection of a replacement single-storey outbuilding for storage

Full planning permission Croydon
26 Aug 2026 Pending 26/02429/HSE

25 Maryland Road Thornton Heath CR7 8DG

Demolition of existing single storey attached garage. Construction of a hip to gable end roof extension, dormer extension within the rear roof slope a...

Householder Application Croydon
26 Aug 2026 Pending 26/02433/HSE

49 Virginia Road Thornton Heath CR7 8EN

Erection of first-floor rear extension approximately 1.7 metres in depth across the full width of the original dwelling.

Householder Application Croydon
26 Aug 2026 Awaiting decision 26/02404/HSE

12 Blossom Close South Croydon CR2 7EZ

Erection of a single storey rear extension (retrospective).

Householder Application Croydon
26 Aug 2026 Pending 26/02098/HSE

2 Hilton Way South Croydon CR2 9ER

Alterations, erection of single/two storey side and single storey rear extension

Householder Application Croydon
26 Aug 2026 Pending 26/02377/FUL

Hillside House 1 Duppas Avenue Croydon CR0 4BX

Installation of a new bin enclosure, access path and new wall, gates and fence

Full planning permission Croydon
26 Aug 2026 Pending 26/01388/FUL

56 Mayfield Road South Croydon CR2 0BF

Alterations, conversion of existing dwelling to form 1x 3-bedroom and 4x 1-bedroom flats, erection of part single/two storey rear extension, two-store...

Full planning permission Croydon
25 Aug 2026 Awaiting decision 26/02416/HSE

19A Smitham Bottom Lane Purley CR8 3DE

Erection of single storey rear extension. Alterations.

Householder Application Croydon
25 Aug 2026 Awaiting decision 26/02330/LP

4 Stoneleigh Park Avenue Croydon CR0 7SL

Erection of single storey side/rear infill extension.

LDC (Proposed) Operations edged Croydon
24 Aug 2026 Awaiting decision 26/02233/HSE

79 Alexandra Road Croydon CR0 6EZ

Single storey wrap around extension

Householder Application Croydon
24 Aug 2026 Awaiting decision 26/02399/LP

296 Longheath Gardens Croydon CR0 7TZ

erection of a single storey rear extension

LDC (Proposed) Operations edged Croydon
24 Aug 2026 Awaiting decision 26/01218/FUL

30 Lancaster Road South Norwood London SE25 4AF

Replacement of the existing ground floor flat rear window with French doors and new access to amenity area.

Full planning permission Croydon
24 Aug 2026 Approved 26/02400/LP

46 Coulsdon Road Coulsdon CR5 2LA

Erection of single storey rear outbuilding.

LDC (Proposed) Operations edged Croydon
24 Aug 2026 Awaiting decision 26/02392/FUL

254 Limpsfield Road South Croydon CR2 9DD

Alterations, conversion of existing dwellinghouse to 2x 3 bedroom semi-detached dwellinghouses, incorporating erection of an additional storey to crea...

Full planning permission Croydon
24 Aug 2026 Pending 26/02394/FUL

265 Portland Road South Norwood London SE25 4XB

Conversion of the existing mixed-use property, including the partial change of use of the ground floor from Class E to Class C3, together with the rec...

Full planning permission Croydon
24 Aug 2026 Awaiting decision 26/01884/FUL

92 - 94 South End Croydon CR0 1DQ

Alterations and change of use of part of the ground floor and all upper floors from Class E use to an 11-person HMO (sui generis), including erection ...

Full planning permission Croydon
24 Aug 2026 Approved 26/02408/LP

28 Ellesmere Drive South Croydon CR2 9EJ

Loft conversion includes erection of hip to gable extension and rear dormer extension. Alterations include installation of two rooflights to the front...

LDC (Proposed) Operations edged Croydon
24 Aug 2026 Awaiting decision 26/02397/HSE

30 Craignish Avenue Norbury London SW16 4RN

Erection of a part single, part double storey rear extension including the formation of a vehicular crossover.

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.