House extensions in Knowsley

Knowsley received 202 householder applications in the last 12 months - about 4 a week. Rear extensions and side extensions are the most common. Of the 155 decided so far, 152 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 51 applications
Yesterday Awaiting decision 26/00434/CLD

8 Granborne Chase Kirkby Park Kirkby Knowsley L32 2DQ

Certificate of lawful development for the erection of a 2m boundary fence and conversion of garage to habitable room

Certificate of Lawful Use/ Dev. Proposed Knowsley
22 Oct 2026 Awaiting decision 26/00524/FUL

Stanley Bungalows Knowsley Lane Knowsley L34 9EB

Demolition of existing outbuildings together with external alterations to existing Bungalows, including replacement fenestration and rainwater goods, ...

Full Application Knowsley
22 Oct 2026 Awaiting decision 26/00526/FUL

1 Driffield Road Prescot Knowsley L34 1LH

Erection of a single storey side extension together with the erection of a front porch

Full Application Knowsley
21 Oct 2026 Awaiting decision 26/00481/FUL

St Aloysius R C Social Club Crosswood Crescent Huyton Knowsley L36 2QG

Erection of a 2.4m paladin fence to site boundary

Full Application Knowsley
20 Oct 2026 Awaiting decision 26/00523/CLD

52 Page Moss Lane Roby Knowsley L14 0LX

Certificate of lawful development for a proposed conversion of existing garage to a habitable room.

Certificate of Lawful Use/ Dev. Proposed Knowsley
19 Oct 2026 Awaiting decision 26/00354/FUL

15 Longmeadow Road Knowsley Village Knowsley L34 0HN

Erection of single storey rear extension

Full Application Knowsley
18 Oct 2026 Awaiting decision 26/00477/FUL

66 Rutland Avenue Halewood Knowsley L26 0TP

Erection of single storey front, side and rear extension together replacement of front window with bay window, replacement windows to front and rear e...

Full Application Knowsley
15 Oct 2026 Awaiting decision 26/00494/FUL

6 Rosebank Road Huyton Knowsley L36 3AB

Erection of single storey side extension and conversion of garage to habitable room

Full Application Knowsley
15 Oct 2026 Awaiting decision 26/00514/FUL

4 Brooke Way Halewood Knowsley L26 0AF

Erection of a single storey side garage extension

Full Application Knowsley
14 Oct 2026 Awaiting decision 26/00511/FUL

46 Dam House Crescent Roby Knowsley L36 9WE

Erection of a single storey side/rear extension, including the partial conversion of the existing garage. Erection of 2no. Small dormer extensions wit...

Full Application Knowsley
12 Oct 2026 Awaiting decision 26/00505/FUL

14 Rod Mill Grove Prescot Knowsley L34 1AB

Garage conversion together with internal alterations

Full Application Knowsley
9 Oct 2026 Awaiting decision 26/00498/PDE

19 Gordon Drive Roby Knowsley L14 7PU

Prior approval for the erection of a single storey rear extension maximum depth from original rear wall: 3.1 metres maximum height: 3.2 metres height ...

Prior Notification - Household Knowsley
8 Oct 2026 Awaiting decision 26/00495/FUL

59 Tarbock Road Huyton Knowsley L36 5XN

Retrospective application for the erection of 3 no. outbuildings to the rear

Full Application Knowsley
2 Oct 2026 Awaiting decision 26/00493/CLD

21 Bowring Park Avenue Roby Knowsley L16 2NH

Certificate of lawfulness for proposed siting of a caravan within the garden of 21 Bowring Park Avenue for ancillary use to the main dwelling house

Certificate of Lawful Use/ Dev. Proposed Knowsley
2 Oct 2026 Awaiting decision 26/00492/CLD

29 Higher Road Halewood Knowsley L25 0QG

Certificate of lawfulness for proposed siting of a caravan within the garden of 29 Higher Road for ancillary use to the main dwelling house

Certificate of Lawful Use/ Dev. Proposed Knowsley
2 Oct 2026 Awaiting decision 26/00488/FUL

27 Hamnett Road Prescot Knowsley L34 6LL

Erection of a single storey side and rear extension.

Full Application Knowsley
2 Oct 2026 Awaiting decision 26/00455/CLD

17 Discovery Way Whiston Knowsley L35 3AW

Certificate of lawful development for the erection of a proposed single storey rear extension and replacement garage door to front elevation with wind...

Certificate of Lawful Use/ Dev. Proposed Knowsley
1 Oct 2026 Awaiting decision 26/00450/FUL

4 Old Meadow Knowsley Knowsley L34 0JW

Erection of a single storey rear extension, first floor side extension and a front porch

Full Application Knowsley
28 Sept 2026 Awaiting decision 26/00478/FUL

86 Rowan Drive Kirkby Park Kirkby Knowsley L32 0SH

Erection of single storey front infill extension and associated works

Full Application Knowsley
25 Sept 2026 Awaiting decision 26/00476/PDE

77 Tithebarn Road Knowsley Knowsley L34 0EU

Prior approval for the erection of a single storey rear extension maximum depth from original rear wall: 4.55 metres maximum height: 3.43 metres heigh...

Prior Notification - Household Knowsley
25 Sept 2026 Awaiting decision 26/00474/CLD

45 Reva Road Roby Knowsley L14 6UA

Certificate of lawful development for the erection of a single storey rear extension; following the demolition of the existing rear extension

Certificate of Lawful Use/ Dev. Proposed Knowsley
22 Sept 2026 Awaiting decision 26/00462/FUL

2 Lear Road Prescot Knowsley L34 1AZ

Conversion of existing garage to a habitable space.

Full Application Knowsley
17 Sept 2026 Awaiting decision 26/00333/FUL

The Barley Mill Greensbridge Farm Greensbridge Lane Tarbock Green Knowsley L35 1QD

Erection of a single storey rear extension

Full Application Knowsley
16 Sept 2026 Awaiting decision 26/00421/FUL

3 Lawler Grove Prescot Knowsley L34 6LP

Erection of 1 no. detached outbuilding to front of dwelling

Full Application Knowsley
11 Sept 2026 Awaiting decision 26/00461/FUL

17 Willaston Drive Halewood Knowsley L26 9YN

Erection of a two storey side and front extension

Full Application Knowsley
7 Sept 2026 Approved 16 Oct 26/00440/CLD

11 Singleton Drive Knowsley Village Knowsley L34 0HP

Certificate of lawful development for the erection of a proposed rear dormer extension and the installation of 2no. Rooflights to the front roof-plane

Certificate of Lawful Use/ Dev. Proposed Knowsley
7 Sept 2026 Approved 30 Sep 26/00439/CLD

103 Tarbock Road Huyton Knowsley L36 5TD

Certificate of lawful development for the erection of a proposed rear dormer extension

Certificate of Lawful Use/ Dev. Proposed Knowsley
4 Sept 2026 Approved 16 Oct 26/00340/FUL

39 Tithebarn Road Knowsley Knowsley L34 0EU

Erection of a two storey side extension and single storey front and rear extension with partial demolition of existing garage

Full Application Knowsley
2 Sept 2026 Approved 16 Oct 26/00435/FUL

18 Primrose Drive Huyton Knowsley L36 8DW

Erection of a single storey side extension

Full Application Knowsley
2 Sept 2026 Approved 30 Sep 26/00433/CLD

33 Oxford Drive Halewood Knowsley L26 0TN

Certificate of lawful development for the erection of a proposed rear dormer extension, loft conversion and the installation of 2no. Rooflights to the...

Certificate of Lawful Use/ Dev. Proposed Knowsley
1 Sept 2026 Awaiting decision 26/00171/FUL

26 Harriers Crescent Westvale Kirkby Knowsley L32 4AD

Erection of a pergola (retrospective)

Full Application Knowsley
1 Sept 2026 Approved 16 Oct 26/00427/FUL

3 Woodland Road Halewood Knowsley L26 1XE

Erection of a single storey side and rear extension together with the demolition of existing garage.

Full Application Knowsley
28 Aug 2026 Awaiting decision 26/00179/FUL

43 Thingwall Hall Drive Roby Knowsley L14 5PE

Extension to existing dropped kerb vehicualr access together with alterations to front hardstanding

Full Application Knowsley
28 Aug 2026 Approved 6 Oct 26/00399/PDE

4 Greystone Road Roby Knowsley L14 6UG

Prior approval for the erection of a single storey rear extension maximum depth from original rear wall: 4.90 metres maximum height: 3.80 metres heigh...

Prior Notification - Household Knowsley
27 Aug 2026 Awaiting decision 26/00429/FUL

23 Cringles Drive Huyton Knowsley L35 1RP

Erection of first floor side extension with construction of pitched roof to existing front porch

Full Application Knowsley
26 Aug 2026 Approved 16 Oct 26/00418/FUL

30 Blackburne Drive Halewood Knowsley L25 0QF

Erection of a two storey side and part two storey rear extension.

Full Application Knowsley
26 Aug 2026 Awaiting decision 26/00288/FUL

The Smithy Greensbridge Lane Tarbock Green Knowsley L35 1QH

Demolition of existing garage together with the erection of 1no. Self-contained annexe within curtilage of existing dwelling.

Full Application Knowsley
25 Aug 2026 Awaiting decision 26/00408/FUL

Unicorn Inn 405 Cronton Road Cronton Knowsley WA8 5QF

Retenion of erected single storey side extension

Full Application Knowsley
24 Aug 2026 Approved 7 Oct 26/00420/FUL

495 Cronton Road Cronton Knowsley WA8 5QH

Erection of a single storey side extension.

Full Application Knowsley
17 Aug 2026 Approved 7 Oct 26/00404/FUL

12 Lysander Road Prescot Knowsley L34 1BP

Conversion of integral garage to form habitable room

Full Application Knowsley
13 Aug 2026 Awaiting decision 26/00310/FUL

4 Rectory Drive Halewood Knowsley L26 6LJ

Installation of new obscured window to first floor gable wall

Full Application Knowsley
12 Aug 2026 Approved 11 Sep 26/00400/FUL

26 Rosebank Road Huyton Knowsley L36 3AB

Proposed conversion of existing garage to a habitable space for use by a disabled person

Full Application Knowsley
11 Aug 2026 Approved 6 Oct 26/00351/FUL

46 Sugar Lane Knowsley Knowsley L34 0ER

Erection of a single storey front, side and rear extension. Demolition of existing front extension.

Full Application Knowsley
11 Aug 2026 Approved 30 Sep 26/00382/FUL

10 Pear Tree Road Huyton Knowsley L36 5UB

Erection of two storey side extension

Full Application Knowsley
10 Aug 2026 Approved 21 Sep 26/00391/PDE

23 Lapwing Court Halewood Knowsley L26 7WH

Prior approval for the erection of a single storey rear extension maximum depth from original rear wall: 4.00 metres maximum height: 3.65 metres heigh...

Prior Notification - Household Knowsley
7 Aug 2026 Awaiting decision 25/00571/FUL

AM2PM Convenience Store 18 - 20 Mackets Lane Halewood Knowsley L25 0LQ

Part single and part two-storey rear extension; installation of plant and extraction equipment in association with exsiting shop use and use as restau...

Full Application Knowsley
7 Aug 2026 Approved 29 Sep 26/00388/FUL

101 Rimmer Avenue Roby Knowsley L16 2NF

Erection of first floor side extension

Full Application Knowsley
5 Aug 2026 Approved 5 Oct 26/00386/FUL

5 Whitestone Close Knowsley Knowsley L34 7HG

Erection of a part two storey and single storey extension to side and rear with construction of pitched roof to front elevation

Full Application Knowsley
3 Aug 2026 Awaiting decision 26/00379/FUL

36 Archway Road Huyton Knowsley L36 9XE

Change of use from residential dwelling (use Class C3) to dental practice (use Class E(e)) together with external alterations comprising demolition of...

Full Application Knowsley
30 Jul 2026 Approved 22 Sep 26/00371/FUL

Halewood Academy The Avenue Halewood Knowsley L26 1UU

External alterations to building comprising of roof refurbishment to form enclosures to existing plant and associated works

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

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