House extensions in Harlow

Harlow received 163 householder applications in the last 12 months - about 3 a week. Rear extensions and garage works are the most common. Of the 114 decided so far, 103 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 63 applications
4 Sept 2026 Pending HW/HSE/26/00360

5 Deer Park Harlow Essex CM19 4LB

Integral garage conversion and enclosure of covered porch area

Householder Application Harlow
2 Sept 2026 Pending HW/HSE/26/00137

16 Bury Road Harlow Essex CM17 0ED

Roof replacement

Householder Application Harlow
31 Aug 2026 Pending HW/LDCP/26/00352

30 Blackbush Spring Harlow Essex CM20 3DY

Construction of a single storey rear extension

Lawful Development Cert - Proposed Harlow
31 Aug 2026 Pending HW/HSE/26/00353

14 Hawkenbury Harlow Essex CM19 4HY

Erection of a single storey rear side infill extension

Householder Application Harlow
28 Aug 2026 Pending HW/LDCP/26/00349

63 Peterswood Harlow Essex CM18 7RJ

Conversion of existing garage to a habitable space

Lawful Development Cert - Proposed Harlow
26 Aug 2026 Pending HW/FUL/26/00348

5 Ladyshot Harlow Essex CM20 3EJ

Construction of a single storey rear extension and front entrance porch

Full Application Harlow
25 Aug 2026 Pending HW/HSE/26/00347

210 Hollyfield Harlow Essex CM19 4NG

Proposed front access ramp

Householder Application Harlow
24 Aug 2026 Pending HW/HSE/26/00341

88 Collins Meadow Harlow Essex CM19 4EL

Construction of a two-storey rear extension and replacement of the attached garage

Householder Application Harlow
21 Aug 2026 Unknown HW/HSE/26/00340

13 Brambling Crescent Harlow Essex CM17 0GF

Retrospective permission for erection of a single storey rear extension

Householder Application Harlow
18 Aug 2026 Unknown HW/HSE/26/00334

63 Stackfield Harlow Essex CM20 2LD

Erection of a side extension with internal mezzanine floor

Householder Application Harlow
17 Aug 2026 Pending Decision HW/PALHE/26/00331

115 Chelsea Gardens Harlow Essex CM17 9RY

Demolition of existing conservatory and erection of new 4m deep extension

Prior Approval Larger Householder Extens Harlow
14 Aug 2026 Unknown HW/HSE/26/00330

13 Huntley Road Harlow Essex CM20 2PR

Construction of a single storey side extension to join house and garage

Householder Application Harlow
13 Aug 2026 Unknown HW/FUL/26/00327

H S S Hire Group Plc Harmony Works Edinburgh Way Harlow Essex CM20 2DH

Alteration to existing shopfront with installation of condenser units, retractable awning, LED signage and wall lights

Full Application Harlow
13 Aug 2026 Unknown HW/FUL/26/00322

154 Dads Wood Harlow Essex CM20 1JQ

Replacement windows and door

Full Application Harlow
11 Aug 2026 Unknown HW/LDCP/26/00324

74 Ashworth Place Harlow Essex CM17 9PW

Construction of a single storey rear extension projecting 3m from the rear elevation, with a flat roof incorporating a roof lantern. Loft conversion i...

Lawful Development Cert - Proposed Harlow
10 Aug 2026 Unknown HW/HSE/26/00212

28 Stackfield Harlow Essex CM20 2LB

Inserting a dropped curb to the front of the property

Householder Application Harlow
10 Aug 2026 Unknown HW/LDCP/26/00323

Flat Block 58 To 62 The Chase Newhall Harlow Essex CM17 9JA

Replacement cladding to external of building

Lawful Development Cert - Proposed Harlow
7 Aug 2026 Unknown HW/HSE/26/00318

7 Herons Wood Harlow Essex CM20 1RW

Construction of side and rear extensions. Increase in roof ridge height to form first floor accommodation and insertion of 6 no. rooflights

Householder Application Harlow
5 Aug 2026 Unknown HW/HSE/26/00309

7 Greenfinch Way Newhall Harlow Essex CM17 9FT

Construction of a side facing subordinate dormer for a loft conversion with 4 roof slope skylight windows

Householder Application Harlow
5 Aug 2026 Pending Decision HW/LDCP/26/00311

18 Whitewaits Harlow Essex CM20 3LJ

Construction of a single-storey rear extension and loft conversion incorporating a rear-facing box dormer, removal of chimney

Lawful Development Cert - Proposed Harlow
5 Aug 2026 Unknown HW/LDCP/26/00310

108 Old Oak Way Harlow Essex CM17 0GD

Proposed siting of a single unit mobile home for ancillary use to the main dwelling

Lawful Development Cert - Proposed Harlow
31 Jul 2026 Unknown HW/HSE/26/00299

100 Canons Gate Harlow Essex CM20 1QQ

Erection of a single storey front extension for an extended porch

Householder Application Harlow
30 Jul 2026 Unknown HW/HSE/26/00296

76 The Fortunes Harlow Essex CM18 6PH

Proposed front access ramp

Householder Application Harlow
28 Jul 2026 Approved HW/LDCP/26/00294

17 Sakins Croft Harlow Essex CM18 7BW

Erection of a Single Storey rear extension with lean-to roof and 2 velux windows

Lawful Development Cert - Proposed Harlow
27 Jul 2026 Unknown HW/LDCP/26/00290

Flat Block 5 To 9 Holland Way Newhall Harlow Essex CM17 9NN

To replace timber with a non combustible alternative up to the 2nd floor level (the first seven levels of tile from the first floor up. Install cavity...

Lawful Development Cert - Proposed Harlow
27 Jul 2026 Unknown HW/HSE/26/00292

113 Tilbury Mead Harlow Essex CM18 6JG

Proposed ramp access to side entrance

Householder Application Harlow
23 Jul 2026 Decided HW/DEM/26/00275

Residential Development At Garage Block 1-5 Barn Mead Barn Mead Harlow Essex

Demolition of garage block 1-5 Barn Mead

Demolition Notification Harlow
23 Jul 2026 Decided HW/DEM/26/00283

Garage 1 Ryecroft Harlow Essex

Demolition of garage block 1-4 Ryecroft

Demolition Notification Harlow
23 Jul 2026 Decided HW/DEM/26/00284

Garage 14 Northbrooks Harlow Essex

Demolition of garage block 14-17 Northbrooks

Demolition Notification Harlow
21 Jul 2026 Unknown HW/HSE/26/00276

8 Wattle Road Harlow Essex CM17 0GE

Erection of ground floor rear infill extension

Householder Application Harlow
16 Jul 2026 Approved HW/HSE/26/00272

40 Park Mead Harlow Essex CM20 1RL

Construction of a two-storey side extension woth associated internal and external works

Householder Application Harlow
16 Jul 2026 Approved HW/HSE/26/00281

1 East Park View East Park Harlow Essex CM17 0SG

Retrospective consent is sought for the construction of a single storey rear extension and erection of garden room in the rear garden

Householder Application Harlow
16 Jul 2026 Approved HW/HSE/26/00280

16 Bird Cherry Lane Harlow Essex CM17 0FR

Conversion of existing car port into kitchen extension and installation of bi folding door at rear

Householder Application Harlow
15 Jul 2026 Unknown HW/HSE/26/00279

34 The Readings Harlow Essex CM18 7BT

Construction of a single storey rear extension and side two-storey extension above existing garage

Householder Application Harlow
14 Jul 2026 Approved HW/HSE/26/00277

204 Arkwrights Harlow Essex CM20 3NB

Installation of new window to front elevation on the first floor

Householder Application Harlow
13 Jul 2026 Approved HW/FUL/26/00267

Harlow Rugby Union Football Club Howard Way Harlow Essex CM20 3FD

Replacement of existing fabric roller blinds to outdoor pergola with external aluminium roller shutters

Full Application Harlow
13 Jul 2026 Approved HW/FUL/26/00266

31 Wagtail Crescent Harlow Essex CM17 0SR

Secured level access to the front of the main building with Bow Top metal fencing and gate to the front boundary area

Full Application Harlow
13 Jul 2026 Approved HW/HSE/26/00269

45 Whieldon Grange Harlow Essex CM17 9WG

Garage conversion to annex ancillary to the dwelling house

Householder Application Harlow
9 Jul 2026 Approved HW/LDCP/26/00263

101 Fennells Harlow Essex CM19 4RW

Proposed loft conversion with rear dormer and skylights

Lawful Development Cert - Proposed Harlow
8 Jul 2026 Approved HW/LBC/26/00259

Cabot House St Johns Walk Harlow Essex CM17 0AJ

Following damage caused by the impact of a motor vehicle works are required to repair and reinstate damage to the existing external wall and replaceme...

Listed Building Consent Harlow
8 Jul 2026 Approved HW/LDCP/26/00260

116 Upper Mealines Harlow Essex CM18 7AN

Relocation of a internal soil and vent pipe to the external rear elevation with bathroom alterations

Lawful Development Cert - Proposed Harlow
7 Jul 2026 Approved HW/HSE/26/00257

55 Sheering Road Harlow Essex CM17 0JN

Erection of a single-storey detached garden outbuilding to the rear of the property for use as a golf simulator incidental to the main dwelling

Householder Application Harlow
7 Jul 2026 Unknown HW/HSE/26/00258

14 Rye Hill Road Harlow Essex CM18 7JE

Construction of ground floor front and rear extensions with proposed first floor front extension and two-storey side extension together with remodelli...

Harlow
30 Jun 2026 Decided HW/PALHE/26/00254

35 Little Grove Field Harlow Essex CM19 4BT

Erection of a single storey rear extension

Prior Approval Larger Householder Extens Harlow
29 Jun 2026 Approved HW/LDCP/26/00251

5 Deer Park Harlow Essex CM19 4LB

Integral garage conversion and enclosure of covered porch area

Lawful Development Cert - Proposed Harlow
29 Jun 2026 Refused HW/HSE/26/00253

79 Little Grove Field Harlow Essex CM19 4BX

Erection of a single storey rear extension

Householder Application Harlow
26 Jun 2026 Refused HW/HSE/26/00250

88 Collins Meadow Harlow Essex CM19 4EL

Construction of a two-storey rear extension, first-floor front dormer extension within the existing roof space, and replacement of the attached garage

Householder Application Harlow
25 Jun 2026 Approved HW/HSE/26/00244

71 Nicholls Field Harlow Essex CM18 6EA

Installation of vehicle hard standing to front of property

Householder Application Harlow
24 Jun 2026 Approved HW/HSE/26/00243

1 Burley Hill Harlow Essex CM17 9QQ

Conversion of internal garage to office space

Householder Application Harlow
22 Jun 2026 Pending Decision HW/HSE/26/00242

74 Tilbury Mead Harlow Essex CM18 6JF

Part single, part two-storey rear extension with alterations to the front elevation, including new front door and entrance canopy (Amended Proposal De...

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

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