House extensions in Waltham Forest

Waltham Forest received 1,859 householder applications in the last 12 months - about 36 a week. Rear extensions and dormers are the most common. Of the 1,542 decided so far, 1,240 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 369 applications
Yesterday Consultation/Publicity 262385

49 Wickham Road, Chingford, London, E4 9JR

Construction of a hip to gable side roof extension at No. 47; construction of a single storey side and rear extension, first floor extension and dorme...

Full Planning Waltham Forest
Yesterday Consultation/Publicity 262415

147 Brettenham Road, Walthamstow, London, E17 5AX

Construction of dormer roof extension to main rear roof, together with installation of three roof lights to front roof slope.

Full Planning Waltham Forest
23 Oct 2026 Consultation/Publicity 262326

REAR OF 538 Lea Bridge Road, Leyton, London, E10 7DT

Internal alterations to extend the existing ground floor flat (1 Bedroom) (Use Class C3).

Full Planning Waltham Forest
23 Oct 2026 Consultation/Publicity 262431

45 Courtland Avenue, Chingford, London, E4 6DU

Construction of a single storey rear extension.

Householder Planning Waltham Forest
23 Oct 2026 Consultation/Publicity 262398

249 Edward Road, Walthamstow, London, E17 6NU

Construction of dormer roof extension to main rear roof (with French doors and safety railings), and roof terrace extension above two storey outrigger...

Full Planning Waltham Forest
23 Oct 2026 Consultation/Publicity 262380

41 Suffield Road, Chingford, London, E4 9TA

Construction of a hip to gable side roof extension and dormer roof extension to main rear roof, together with installation of solar panels above the r...

Full Planning Waltham Forest
23 Oct 2026 Consultation/Publicity 262414

49 Blackhorse Road

Replacement of the existing windows and doors with new double glazed uPVC windows and composite door to the front elevation and uPVC double glazed win...

Full Planning Waltham Forest
21 Oct 2026 Consultation/Publicity 262434

ARCH 287 Sansom Road, Leytonstone, London, E11 3HE

Alterations to the front and rear arches, construction of a single storey rear lean-to extension, installation of new steel railings and steel access ...

Full Planning Waltham Forest
21 Oct 2026 Consultation/Publicity 262420

32 Balmoral Road, Leyton, London, E10 5ND

Construction of single storey wraparound rear extension.

Householder Planning Waltham Forest
21 Oct 2026 Consultation/Publicity 262410

BUXTON HOUSE Buxton Drive

Replacement of windows and doors, including timber boarding panels, to flats 3-8, 12-16, 20, 21, 23-27, 29, 30, 32, 37-40 and the replacement of front...

Full Planning Waltham Forest
21 Oct 2026 Consultation/Publicity 262407

93 Greenway Avenue, Walthamstow, London, E17 3QL

Construction of a single storey outbuilding in rear garden.

Householder Planning Waltham Forest
21 Oct 2026 Consultation/Publicity 262413

13 Castleton Road, Walthamstow, London, E17 4AR

Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main rear roof, and roof extension above two storey outrigger, to...

Certificate of Lawful Development - Proposed Waltham Forest
21 Oct 2026 Valid/Complete 262432

20 Merton Road, Walthamstow, London, E17 9DE

Lawful development certificate (Proposed) for the installation of replacement windows and doors to the existing rear extension along with new access s...

Certificate of Lawful Development - Proposed Waltham Forest
20 Oct 2026 Valid/Complete 262401

32 Woodview Avenue, Chingford, London, E4 9SL

Lawful Development Certificate (Proposed) - Construction of a single storey rear extension and single storey outbuilding within rear garden.

Certificate of Lawful Development - Proposed Waltham Forest
20 Oct 2026 Consultation/Publicity 262402

22 Cheneys Road, Leytonstone, London, E11 3LN

Construction of dormer roof extension to main rear roof, including raising roof ridge, together with installation of two roof lights to front roof slo...

Householder Planning Waltham Forest
20 Oct 2026 Valid/Complete 262403

65 Brook Crescent, Chingford, London, E4 9ES

Lawful Development Certificate (Proposed) – Construction of a single storey outbuilding in the rear garden.

Certificate of Lawful Development - Proposed Waltham Forest
20 Oct 2026 Valid/Complete 262379

100 Vallentin Road, Walthamstow, London, E17 3JH

Lawful Development Certificate (Proposed) - Replacement of existing cladding system with a like for like external appearance.

Certificate of Lawful Development - Proposed Waltham Forest
19 Oct 2026 Pending 262422

29 Marmion Close, Chingford, London, E4 8EN

Prior approval for the construction of a single storey rear extension which would extend 4.00m beyond the rear wall of the existing dwelling, a maximu...

Waltham Forest
19 Oct 2026 Valid/Complete 262394

13 Canning Road, Walthamstow, London, E17 6LT

Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main rear roof, and roof extension above two storey outrigger, wi...

Certificate of Lawful Development - Proposed Waltham Forest
19 Oct 2026 Consultation/Publicity 262397

2 Chelmsford Road, Walthamstow, London, E17 8NW

Construction of a hip to gable side roof extension, and dormer roof extension to main rear roof, and roof extension above two storey outrigger togethe...

Householder Planning Waltham Forest
19 Oct 2026 Consultation/Publicity 262393

112 Essex Road, Leyton, London, E10 6BS

Prior approval for the construction of a single storey rear extension which would extend 4.00m beyond the rear wall of the existing dwelling, a maximu...

Prior Approval - Larger Home Extension Waltham Forest
19 Oct 2026 Consultation/Publicity 262391

23 Carlton Road, Walthamstow, London, E17 5RA

Construction of single storey wraparound rear extension.

Householder Planning Waltham Forest
19 Oct 2026 Valid/Complete 262392

35 Douglas Road, Chingford, London, E4 6DB

Lawful development certificate (Proposed) for the construction of a rear dormer roof extension and three roof-lights to the front roof slope.

Certificate of Lawful Development - Proposed Waltham Forest
19 Oct 2026 Consultation/Publicity 262376

24 Brunel Road, Walthamstow, London, E17 8SB

Construction of a ground and first floor side extension.

Householder Planning Waltham Forest
19 Oct 2026 Consultation/Publicity 262386

346 Brettenham Road, Walthamstow, London, E17 5AU

Construction of dormer roof extension to main rear roof, together with installation of three roof lights to front roof slope.

Full Planning Waltham Forest
19 Oct 2026 Consultation/Publicity 262226

102A Chingford Mount Road, Chingford, London, E4 9AA

Construction of dormer roof extension to main rear roof, together with installation of two roof lights to front roof slope.

Full Planning Waltham Forest
19 Oct 2026 Consultation/Publicity 262342

53, SALISBURY HALL GARDENS Chingford Road, Chingford, London, E4 8SA

Construction of a single storey rear extension, dormer roof extension to main rear roof with French doors and safety railings, together with installat...

Householder Planning Waltham Forest
19 Oct 2026 Consultation/Publicity 262352

Ground Floor Flat, 39 Cleveland Park Avenue, Walthamstow, London, E17 7BP

Construction of single storey rear extension to ground floor flat.

Full Planning Waltham Forest
19 Oct 2026 Consultation/Publicity 262368

10 Pendlestone Road, Walthamstow, London, E17 9BH

Construction of single storey wraparound rear extension.

Householder Planning Waltham Forest
16 Oct 2026 Valid/Complete 262358

Unit 2, 210 Church Road, Leyton, London, E10 7JQ

Lawful development certificate (Proposed) for partial demolition of the external boundary wall.

Certificate of Lawful Development - Proposed Waltham Forest
16 Oct 2026 Consultation/Publicity 262274

91 Manor Road, Leyton, London, E10 7HN

Construction of a single storey side and rear extension and first floor extension.

Householder Planning Waltham Forest
16 Oct 2026 Consultation/Publicity 262388

37 Farnan Avenue, Walthamstow, London, E17 4NQ

Prior approval for the construction of a single storey rear extension which would extend 6.00m beyond the rear wall of the existing dwelling, a maximu...

Prior Approval - Larger Home Extension Waltham Forest
16 Oct 2026 Consultation/Publicity 262320

101 Chesterfield Road, Leyton, London, E10 6EN

Construction of a single storey rear extension

Householder Planning Waltham Forest
16 Oct 2026 Consultation/Publicity 262328

11 Myrtle Road, Walthamstow, London, E17 8BX

Construction of first floor rear extension.

Householder Planning Waltham Forest
16 Oct 2026 Consultation/Publicity 262329

11 Myrtle Road, Walthamstow, London, E17 8BX

Prior approval for the construction of a single storey rear extension which would extend 5.97m beyond the rear wall of the original dwellinghouse, wit...

Prior Approval - Larger Home Extension Waltham Forest
16 Oct 2026 Consultation/Publicity 262332

10 Colworth Road, Leytonstone, London, E11 1HY

Construction of a part two storey, part single storey rear extension, front extension to bay window and two rear dormers to facilitate subdivision of ...

Full Planning Waltham Forest
16 Oct 2026 Consultation/Publicity 262370

6 Margaret Avenue, Chingford, London, E4 7NP

Prior approval for the construction of a single storey rear extension which would extend 6.00m beyond the rear wall of the existing dwelling, a maximu...

Prior Approval - Larger Home Extension Waltham Forest
15 Oct 2026 Consultation/Publicity 262137

2 Heaton Close, Chingford, London, E4 6UF

Construction of single storey wraparound rear extension.

Householder Planning Waltham Forest
15 Oct 2026 Consultation/Publicity 262377

27 Elsham Road, Leytonstone, London, E11 3JH

Construction of a single storey rear infill extension.

Householder Planning Waltham Forest
15 Oct 2026 Consultation/Publicity 262311

45 Silverthorn Gardens, Chingford, London, E4 8BW

Demolition of existing garage and construction of a first floor side extension and alterations to the roof including replacement of the flat roof into...

Householder Planning Waltham Forest
15 Oct 2026 Valid/Complete 262375

ORIANA HOUSE, 11 Grange Park Road

Lawful Development Certificate (Proposed) - Replacement of existing cladding system with a like for like external appearance.

Certificate of Lawful Development - Proposed Waltham Forest
14 Oct 2026 Consultation/Publicity 262369

33 Spencer Road, Walthamstow, London, E17 4BD

Prior approval for the construction of a single storey rear extension which would extend 6.00m beyond the rear wall of the existing dwelling, a maximu...

Prior Approval - Larger Home Extension Waltham Forest
14 Oct 2026 Consultation/Publicity 262373

655 Lea Bridge Road, Leyton, London, E10 6AJ

Construction of single storey rear infill extension, first floor rear extension and a rear dormer roof extension (with French doors and safety railing...

Householder Planning Waltham Forest
14 Oct 2026 Consultation/Publicity 262374

58 Badlis Road, Walthamstow, London, E17 5LQ

Construction of dormer roof extension to main rear roof, together with installation of two roof lights to front roof slope.

Householder Planning Waltham Forest
14 Oct 2026 Valid/Complete 262366

46 Goldsborough Crescent, Chingford, London, E4 6PZ

Lawful Development Certificate (Proposed) - Construction of front porch.

Certificate of Lawful Development - Proposed Waltham Forest
13 Oct 2026 Consultation/Publicity 262316

11 Coningsby Gardens, Chingford, London, E4 9BB

Construction of single storey wraparound rear extension. Demolition of the existing garage together with the construction of a garage and office outbu...

Householder Planning Waltham Forest
13 Oct 2026 Valid/Complete 262344

67 Markhouse Avenue, Walthamstow, London, E17 8AY

Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main rear roof, and roof extension above two storey outrigger, wi...

Certificate of Lawful Development - Proposed Waltham Forest
13 Oct 2026 Consultation/Publicity 262365

20 Epsom Road, Leyton, London, E10 6ES

Alteration to the existing rear dormer roof extension involving the installation of replacement windows and doors.

Full Planning Waltham Forest
13 Oct 2026 Valid/Complete 262356

1 Hampton Road, Leytonstone, London, E11 4BZ

Lawful Development Certificate (Proposed) - Construction of dormer roof extension to main rear roof, together with installation of three roof lights t...

Certificate of Lawful Development - Proposed Waltham Forest
13 Oct 2026 Valid/Complete 262362

9 Richmond Crescent, Chingford, London, E4 9RT

Lawful Development Certificate (Proposed) - Removal of conservatory and attached garage. Construction of a single storey rear extension.

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

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