House extensions in Kingston upon Thames

Kingston upon Thames received 769 householder applications in the last 12 months - about 15 a week. Rear extensions and dormers are the most common. Of the 582 decided so far, 487 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 238 applications
Yesterday Pending Consideration 26/01931/HOUF

1 Petersgate Warren Road Kingston Upon Thames KT2 7HY

Erection of two single storey rear infill extensions and changes to first floor rear fenestration

Householder - Fast Track Kingston Upon Thames
Yesterday Pending Consideration 26/01955/PAEXT

111 Ronelean Road Tolworth KT6 7LL

Erection of single storey rear extension (Maximum 5.0m in depth, maximum height of 3.75m and eaves height of 2.65m)

PA Householder Rear Extension Kingston Upon Thames
8 Sept 2026 Pending 26/01939/HOUF

9 Westbury Road New Malden KT3 5BE

Erection of single storey rear and side extension with erection of single storey rear extension and roof alterations to existing garage

Householder - Fast Track Kingston Upon Thames
8 Sept 2026 Pending 26/01938/PAEXTF

9 Westbury Road New Malden KT3 5BE

Erection of single storey rear extension (8m in depth, maximum height of 2.9m and eaves height of 2.9m)

PA Householder Rear Extn - Fast Track Kingston Upon Thames
7 Sept 2026 Pending 26/01946/PAEXT

63 Mayfair Avenue Worcester Park KT4 7SJ

Erection of single storey rear extension (Maximum 6.0m in depth, maximum height of 3.0m and eaves height of 2.92m)

PA Householder Rear Extension Kingston Upon Thames
4 Sept 2026 Pending 26/01859/HOUF

245 Kings Road Kingston Upon Thames KT2 5JH

Erection of two storey side extension and first floor rear extension (Part retrospective)

Householder - Fast Track Kingston Upon Thames
2 Sept 2026 Pending Consideration 26/01902/PAEXT

22 Selbourne Avenue Tolworth KT6 7NS

Erection of single storey rear extension (4m in depth, maximum height of 3m and eaves height of 3m)

PA Householder Rear Extension Kingston Upon Thames
2 Sept 2026 Pending 26/01903/PAEXT

22 Selbourne Avenue Tolworth KT6 7NS

Erection of single storey rear extension (6m in depth, maximum height of 3m and eaves height of 3m)

PA Householder Rear Extension Kingston Upon Thames
1 Sept 2026 Pending Consideration 26/01744/CPU

85 Barnfield Avenue Kingston Upon Thames KT2 5RG

Demolition of the existing rear outbuilding shed and erection of a single storey rear detached outbuilding for home office and personal gym.

Cert of Lawful Use/Operation - Proposed Kingston Upon Thames
1 Sept 2026 Pending Consideration 26/01786/HOU

2 Maria Theresa Close New Malden KT3 5EF

Erection of part two storey/ part single storey side extension incorporating the existing garage.

Householder Kingston Upon Thames
1 Sept 2026 Pending Consideration 26/01892/FUL

9 Willoughby Road Kingston Upon Thames KT2 6LN

Application under Section 73 of the Town and Country Planning Act 1990 to carry out development without compliance with Condition 1 (Approved drawings...

Full Application Kingston Upon Thames
1 Sept 2026 Pending Consideration 26/01893/HOU

24 Leyfield Worcester Park KT4 7LS

Conversion of garage into habitable space with changes to front and side fenestrations. Erection of part two storey/part single storey rear and first ...

Householder Kingston Upon Thames
1 Sept 2026 Pending 26/01864/HOUF

38 High Drive New Malden KT3 3UG

Conversion of garage into habitable room, erection of single storey rear extension, and part two storey rear/side extension. Roof extensions with rear...

Householder - Fast Track Kingston Upon Thames
28 Aug 2026 Pending Consideration 26/01792/HOU

24 Horsley Drive Kingston Upon Thames KT2 5GG

Demolition of an existing rear conservatory, erection of single storey rear extension

Householder Kingston Upon Thames
28 Aug 2026 Pending Consideration 26/01880/HOU

83 Sanger Avenue Chessington KT9 1BY

Erection of single storey outbuilding for use as a Summer house with attached workshop/storage area (Part retrospective)

Householder Kingston Upon Thames
28 Aug 2026 Pending 26/01625/FUL

12 Claremont Gardens Surbiton KT6 4TL

Change of use from 11nos. bed-sitting units (Use Class C4) to 3nos. self-contained flats (Use Class C3), erection of single storey side infill extensi...

Full Application Kingston Upon Thames
28 Aug 2026 Pending 26/01778/HOU

2 Endsleigh Gardens Surbiton KT6 5JL

Erection of two storey side extension to west elevation, basement extension and changes to fenestrations. Removal of rear chimney stack and dormer. In...

Householder Kingston Upon Thames
28 Aug 2026 Pending 26/01803/FUL

9 Wilson Road Chessington KT9 2HE

Subdivision of existing dwelling to create new 1no 3bed family dwelling house. Erection of single storey side and rear, first floor side extension. Ro...

Full Application Kingston Upon Thames
28 Aug 2026 Pending 26/01882/CPU

176 Thornhill Road Tolworth KT6 7TF

Erection of rear L-Shaped dormer roof extension to facilitate loft conversion

Cert of Lawful Use/Operation - Proposed Kingston Upon Thames
28 Aug 2026 Pending 26/01884/HOU

30 Villiers Close Surbiton KT5 8DL

Erection of a single storey side extension by extending the existing garage up to the boundary. Erection of part two storey/part single storey rear, f...

Householder Kingston Upon Thames
28 Aug 2026 Pending 26/01886/HOU

6 Lynton Road New Malden KT3 5EE

Erection of single storey front extension, internal alteration and relocation of main entrance from the side to the front.

Householder Kingston Upon Thames
28 Aug 2026 Pending Decision 26/01815/CPUF

38 Overdale Avenue New Malden KT3 3UF

Erection of hip to gable roof extension with rear dormer and juliet balcony . Installation of 3nos front rooflights and solar panels.

Cert of Lawful Use/Operation - Prop FT Kingston Upon Thames
27 Aug 2026 Pending Consideration 26/01700/FUL

27 Tolworth Park Road Tolworth KT6 7RL

Erection of roof extension with rear dormer and installation of 2nos front rooflights

Full Application Kingston Upon Thames
27 Aug 2026 Pending 26/01777/HOU

2 Endsleigh Gardens Surbiton KT6 5JL

Erection of a single storey side extension, removal of chimney and installation of 1no rear rooflight.

Householder Kingston Upon Thames
27 Aug 2026 Pending 26/01868/HOU

90 Tolworth Rise South Tolworth KT5 9NL

Demolition of existing garage and erection of single storey side and rear extension

Householder Kingston Upon Thames
27 Aug 2026 Pending 26/01830/HOUF

88 Kings Road Kingston Upon Thames KT2 5HS

Erection of single storey ground floor side return, first floor rear extension. Hip to gable roof extension with L-shaped rear dormer and installation...

Householder - Fast Track Kingston Upon Thames
27 Aug 2026 Refused 26/01847/CPUF

68 Green Lane New Malden KT3 5BU

Demolition of an existing rear extension, erection of single storey front porch and rear extension. Hip to gable roof extension with rear dormer and i...

Cert of Lawful Use/Operation - Prop FT Kingston Upon Thames
26 Aug 2026 Pending Consideration 26/01745/HOU

40 Milner Road Kingston Upon Thames KT1 2AU

Demolition of rear storage outbuilding and erection of single storey rear extension, installation of air conditioning unit, and installation of photov...

Householder Kingston Upon Thames
26 Aug 2026 Pending 26/01861/CPU

22 Saffron Way Surbiton KT6 5DU

Erection of rear dormer roof extension and installation of 6nos front rooflights.

Cert of Lawful Use/Operation - Proposed Kingston Upon Thames
25 Aug 2026 Pending Consideration 26/01849/HOU

55 Alric Avenue New Malden KT3 4JL

Erection of L shaped rear dormer roof extension, installation of 3nos front rooflights.

Householder Kingston Upon Thames
25 Aug 2026 Pending 26/01312/HOU

84 Robin Hood Lane Kingston Vale SW15 3QS

Erection of hip to gable and rear dormer roof extensions to facilitate loft conversion and erection of two storey part rear extension.

Householder Kingston Upon Thames
25 Aug 2026 Pending Consideration 26/01848/CPU

55 Alric Avenue New Malden KT3 4JL

Erection of an L-shaped rear dormer roof extension with installation of 2nos. front rooflights

Cert of Lawful Use/Operation - Proposed Kingston Upon Thames
25 Aug 2026 Pending Consideration 26/01843/CPU

63 Fullers Avenue Tolworth KT6 7TD

Erection of rear dormer roof extension with 3no. front rooflights to facilitate loft conversion

Cert of Lawful Use/Operation - Proposed Kingston Upon Thames
25 Aug 2026 Pending Consideration 26/01846/CPU

81 Bodley Road New Malden KT3 5QJ

Erection of hip to gable and rear dormer roof extension with front rooflights to facilitate loft conversion

Cert of Lawful Use/Operation - Proposed Kingston Upon Thames
25 Aug 2026 Pending Consideration 26/01860/PAEXT

112 Red Lion Road Tolworth KT6 7QN

Erection of single storey rear extension (4m in depth, maximum height of 3.5m and eaves height of 2.5m)

PA Householder Rear Extension Kingston Upon Thames
24 Aug 2026 Pending 26/01272/FUL

The Castle 108 King Charles Road Surbiton KT5 8QJ

Installation of decking to front of premises and erection of boundary wall to front and side with soft landscaping. Replacement of front entrance door...

Full Application Kingston Upon Thames
24 Aug 2026 Pending Consideration 26/01604/HOU

347 Hook Rise South Chessington KT6 7LW

Erection of single storey rear/side extension with conversion of garage into habitable room and changes to front fenestration.

Householder Kingston Upon Thames
24 Aug 2026 Pending Consideration 26/01597/CPU

19 Hoppingwood Avenue New Malden KT3 4JX

Erection of hip to gable roof extension with rear dormer and installation of 2nos front rooflights.

Cert of Lawful Use/Operation - Proposed Kingston Upon Thames
24 Aug 2026 Pending Consideration 26/01647/FUL

The Fox And Hounds 60 Portsmouth Road Surbiton KT6 4HS

Repaint external elevations in RAL 3007 and installation of mural on the right side elevation

Full Application Kingston Upon Thames
24 Aug 2026 Pending Consideration 26/01675/FUL

40B And 40C Clarence Street Kingston Upon Thames KT1 1NR

Conversion of commercial floorspace (Use Class E) at first floor level and house in multiple occupation unit (Use Class C4) at second and third floor ...

Full Application Kingston Upon Thames
24 Aug 2026 Pending Consideration 26/01696/HOU

1 Wolsey Drive Kingston Upon Thames KT2 5DP

Erection of single storey side and rear extension.

Householder Kingston Upon Thames
24 Aug 2026 Pending Consideration 26/01839/HOU

9 Bodley Road New Malden KT3 5QD

Demolition of conservatory and single storey rear extension. Erection of single storey rear extension with changes to side fenestration.

Householder Kingston Upon Thames
24 Aug 2026 Pending Consideration 26/01831/HOUF

93A Mount Road Chessington KT9 1JH

Erection of hip to gable and rear dormer roof extension with installation of 2nos. front rooflights to facilitate loft conversion. Erection of single ...

Householder - Fast Track Kingston Upon Thames
21 Aug 2026 Pending Consideration 26/01827/CEU

180 Kingshill Avenue Worcester Park KT4 8DB

Existing garden room outbuilding to the rear garden of the property.

Cert of Lawful Use/Operation - Existing Kingston Upon Thames
21 Aug 2026 Pending Consideration 26/01828/CPU

49 Dickerage Road Kingston Upon Thames KT1 3SR

Erection of a rear dormer roof extension with 3no front and 1no side roof light to facilitate a loft conversion.

Cert of Lawful Use/Operation - Proposed Kingston Upon Thames
20 Aug 2026 Pending Consideration 26/01607/HOU

37 Villiers Avenue Surbiton KT5 8BB

Replacement of the existing front reinforced-concrete stairs with a newly constructed reinforced-concrete stair.

Householder Kingston Upon Thames
20 Aug 2026 Pending Consideration 26/01820/CPU

9 Windsor Avenue New Malden KT3 5EY

Erection of hip to gable and rear roof dormer extension with installation of 2nos. front rooflights to facilitate loft conversion

Cert of Lawful Use/Operation - Proposed Kingston Upon Thames
20 Aug 2026 Pending Consideration 26/01822/CPU

8 Beverley Road New Malden KT3 4AW

Erection of rear dormer roof extension to facilitate loft conversion

Cert of Lawful Use/Operation - Proposed Kingston Upon Thames
20 Aug 2026 Pending Consideration 26/01824/CPU

149 Grand Avenue Surbiton KT5 9HY

Erection of hip to gable and rear dormer roof extension with installation of front rooflights following demolition of the existing dormers

Cert of Lawful Use/Operation - Proposed Kingston Upon Thames
20 Aug 2026 Pending Consideration 26/01711/HOU

230 Canbury Park Road Kingston Upon Thames KT2 6LF

Demolition of an existing rear extension and erection of a single storey rear extension.

Householder Kingston Upon Thames
Recency
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2-4 weeks
1-2 months
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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 Kingston upon Thames?
Yes. Click "Set up alerts" on this page and you'll get a daily or weekly email listing every new extensions application published by Kingston upon Thames. You can also narrow the alert to a postcode, street, or drawn area.

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