House extensions in Warrington

Warrington received 790 householder applications in the last 12 months - about 15 a week. Rear extensions and side extensions are the most common. Of the 686 decided so far, 596 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 149 applications
23 Oct 2026 Pending Consideration 2026/01398/HPA

7 Sephton Avenue, Culcheth And Glazebury, Warrington, WA3 4LZ

Single Storey Rear Extension to extend beyond the rear wall by 3.5m, height of 3.7m and height of the eaves to be 2.7m

Prior Approval (Householder Rear Extension) Warrington
21 Oct 2026 Pending Consideration 2026/01312/FULH

17 Coniston Avenue, Penketh, Warrington, WA5 2QY

Proposed two-storey side extension and part single-storey/Two storey rear extension, together with alterations to the front elevation to form a new en...

Full Planning (Householder) Warrington
20 Oct 2026 Pending Consideration 2026/01363/FULH

11A Burford Lane, Lymm, Warrington, Lymm, WA13 0SG

Demolition of the existing rear annex, side extension, conservatory, detached double garage and garden outbuilding, and erection of two-storey side an...

Full Planning (Householder) Warrington
20 Oct 2026 Pending Consideration 2026/01382/FUL

24 Salisbury Street, Fairfield And Howley, Warrington, WA1 3AS

Single storey rear extension and proposed outbuilding. Increased number of family bedrooms to 9 in total.

Full Planning Warrington
20 Oct 2026 Pending Consideration 2026/01383/HPA

32 Bollin Close, Lymm, Warrington, Lymm, WA13 9PZ

Single storey rear extension to extend beyond the rear wall by 4.7m, height of 3.4m and height of the eaves to be 2.7m

Prior Approval (Householder Rear Extension) Warrington
19 Oct 2026 Pending Consideration 2026/01366/FULH

43 Crowe Avenue, Orford, Warrington, WA2 9RE

Retrospective application to retain, car port, garage, workshop and garden store with render

Full Planning (Householder) Warrington
19 Oct 2026 Pending Consideration 2026/01368/FULH

7 Ackerley Close, Poulton-with-fearnhead, Warrington, WA2 0DL

Single storey extension to rear

Full Planning (Householder) Warrington
16 Oct 2026 Pending Consideration 2026/01374/FULH

PETERSFIELD Heath Lane, Croft, Warrington, WA3 7DP

Construction of a single-storey side/rear extension and first floor front/side extension

Full Planning (Householder) Warrington
16 Oct 2026 Pending Consideration 2026/01315/FULH

5 Westcliff Gardens, Appleton, Warrington, WA4 5FQ

Proposed single storey rear extension and single storey link between the detached garage and the dwellinghouse which includes a single storey side ext...

Full Planning (Householder) Warrington
16 Oct 2026 Pending Consideration 2026/01353/CLDP

39 Stetchworth Road, Walton, Warrington, WA4 6JE

Change of side hipped roof to gable end and rear dormer conversion.

Certificate of Lawfulness (Proposed) Warrington
15 Oct 2026 Pending Consideration 2026/01331/FULH

273 Glazebrook Lane, Rixton-with-glazebrook, Warrington, WA3 5AU

Erection of an open car port and driveway extension

Full Planning (Householder) Warrington
15 Oct 2026 Pending Consideration 2026/01343/FULH

15 Broughton Close, Grappenhall And Thelwall, Warrington, WA4 3DR

Detached double garage with attic room

Full Planning (Householder) Warrington
15 Oct 2026 Pending Consideration 2026/01365/FULH

1 Beechwood Lane, Culcheth And Glazebury, Warrington, WA3 4HJ

Proposed two storey side and rear extension including rear balcony.

Full Planning (Householder) Warrington
15 Oct 2026 Pending Consideration 2026/01369/FULH

24 Freshwater Close, Great Sankey, Warrington, WA5 3PU

Conversion of an existing garage

Full Planning (Householder) Warrington
15 Oct 2026 Pending Consideration 2026/01299/FULH

107 Common Lane, Culcheth And Glazebury, Warrington, WA3 4HQ

Proposed part single-storey and part two-storey rear extension

Full Planning (Householder) Warrington
14 Oct 2026 Pending Consideration 2026/01305/FUL

Heathfield Residential Home, 20 - 22 Alexandra Road, Grappenhall And Thelwall, Warrington, WA4 2EL

Proposed Ground Floor extensions to provide four additional bedrooms, enlargement of the Lounge area, and first floor extension to provide 2 additiona...

Full Planning Warrington
14 Oct 2026 Pending Consideration 2026/01311/FULH

UPPER MOSS SIDE FARM Moss Side Lane, Cuerdley, Warrington, WA4 6XA

Part single storey and part two storey extensions to front, sides and rear

Full Planning (Householder) Warrington
14 Oct 2026 Pending Consideration 2026/01292/FULH

43 Pepper Street, Lymm, Warrington, Lymm, WA13 0JG

Proposed Car parking space in front garden and dropped kerb

Full Planning (Householder) Warrington
12 Oct 2026 Pending Consideration 2026/01322/FULH

7 Woodford Close, Grappenhall And Thelwall, Warrington, WA4 2NA

Proposed single-storey rear and side extensions, a rear dormer extension with Juliet balcony and proposed outbuilding

Full Planning (Householder) Warrington
12 Oct 2026 Pending Consideration 2026/01352/FULH

86 Station Road, Penketh, Warrington, WA5 2UQ

Demolition of existing conservatory and erection of single-storey rear extension.

Full Planning (Householder) Warrington
8 Oct 2026 Pending Consideration 2026/01244/FULH

40 Dam Lane, Rixton-with-glazebrook, Warrington, WA3 6LB

Erection of a first floor rear extension over the existing single storey with two balconies and the formation of three additional parking bays within ...

Full Planning (Householder) Warrington
7 Oct 2026 Pending Consideration 2026/01199/FULH

1 Epworth Close, Burtonwood And Westbrook, Warrington, WA5 4ND

Proposed fence to side garden

Full Planning (Householder) Warrington
6 Oct 2026 Pending Consideration 2026/01341/FULH

16 Hawkshead Road, Burtonwood And Westbrook, Warrington, WA5 4PW

Demolition of conservatory porch to principle elevation and construction of masonry porch in brickwork.

Full Planning (Householder) Warrington
5 Oct 2026 Pending Consideration 2026/01325/FULH

15 Fowley Common Lane, Culcheth And Glazebury, Warrington, WA3 5JJ

single storey rear extension with flat roof and a new single storey front extension and external alterations

Full Planning (Householder) Warrington
5 Oct 2026 Pending Consideration 2026/01219/FULH

CROFTON Back Lane, Burtonwood And Westbrook, Warrington, WA5 4AG

Two storey front extension and detached double garage

Full Planning (Householder) Warrington
2 Oct 2026 Pending Consideration 2026/01279/FULH

102 Higher Lane, Lymm, Warrington, Lymm, WA13 0BY

Rear outbuilding with partly enclosed decking area.

Full Planning (Householder) Warrington
2 Oct 2026 Pending Consideration 2026/01185/FUL

GROOM FORMAL Catherine Street, Bewsey And Whitecross, Warrington, WA5 0LH

Single storey extension

Full Planning Warrington
1 Oct 2026 Pending Consideration 2026/01318/FULH

46 Wellfield Road, Culcheth And Glazebury, Warrington, WA3 4JT

Proposed two storey rear extension and front dormer extension with render

Full Planning (Householder) Warrington
30 Sept 2026 Pending Consideration 2026/01314/FULH

9 Rosemary Avenue, Stockton Heath, Warrington, WA4 2XA

First floor extension to side

Full Planning (Householder) Warrington
30 Sept 2026 Pending Consideration 2026/01191/FULH

477 London Road, Warrington, WA4 5DP

First floor side extension

Full Planning (Householder) Warrington
29 Sept 2026 Pending Consideration 2026/01302/FULH

9 Withins Road, Culcheth And Glazebury, Warrington, WA3 4JW

Single storey extension to the front

Full Planning (Householder) Warrington
29 Sept 2026 Pending Consideration 2026/01230/FULH

37 Sycamore Crescent, Rixton-with-glazebrook, Warrington, WA3 6JR

Installation of 1no. new car parking space and shared surface to front of property

Full Planning (Householder) Warrington
28 Sept 2026 Pending Consideration 2026/01134/FULH

74-76 Meeting Lane, Penketh, Warrington, WA5 2RA

Internal alterations to create two, two bedroom dwellings with external alterations to front and rear elevation

Full Planning (Householder) Warrington
25 Sept 2026 Pending Consideration 2026/01260/CLDP

50 Tresham Drive, Grappenhall And Thelwall, Warrington, WA4 3DU

Single storey rear Extension

Certificate of Lawfulness (Proposed) Warrington
24 Sept 2026 Pending Consideration 2026/01274/FULH

THE RECTORY Church Lane, Grappenhall And Thelwall, Warrington, WA4 3EP

Complete renovation of Listed Building including reinstatement of porch, reform original driveway, boundary wall gates, coach house and greenhouse wit...

Full Planning (Householder) Warrington
23 Sept 2026 Pending Consideration 2026/01094/FULH

22 Hill Cliffe Road, Walton, Warrington, WA4 6NZ

Proposed side and front porch extension with new pitch roof over the existing flat roof and demolition of existing conservatory.

Full Planning (Householder) Warrington
23 Sept 2026 Pending Consideration 2026/01237/FULH

20 Millbank, Lymm, Warrington, Lymm, WA13 9DG

Roofed pergola within the garden curtilage.

Full Planning (Householder) Warrington
23 Sept 2026 Pending Consideration 2026/01240/LBC

20 Millbank, Lymm, Warrington, Lymm, WA13 9DG

Proposed Roofed Pergola

Listed Building Consent Warrington
23 Sept 2026 Pending Consideration 2026/01247/FULH

111 Albany Road, Lymm, Warrington, Lymm, WA13 9LP

Proposed single storey rear and side extension.

Full Planning (Householder) Warrington
23 Sept 2026 Approved 23 Oct 2026/01272/CLDP

106 Northway, Orford, Warrington, WA2 9QA

Single storey rear extension

Certificate of Lawfulness (Proposed) Warrington
22 Sept 2026 Pending Consideration 2026/01265/FULH

8 Culcheth Hall Drive, Culcheth And Glazebury, Warrington, WA3 4PS

Part storey rear extension and part single storey rear extension with render

Full Planning (Householder) Warrington
22 Sept 2026 Approved 23 Oct 2026/01264/CLDP

2 Howard Avenue, Lymm, Warrington, Lymm, WA13 9EQ

Lawful Development Certificate (Section 192) - Proposed side dormer and removal of existing chimney.

Certificate of Lawfulness (Proposed) Warrington
22 Sept 2026 Pending Consideration 2026/01261/FUL

Penketh Parish Council, PENKETH SWIMMING POOL AND COMMUNITY CENTRE Honiton Way, Penketh, Warrington, WA5 2EY

Single storey rear extension to existing changing rooms

Full Planning Warrington
18 Sept 2026 Pending Consideration 2026/01217/FULH

14 Broadstone Close, Great Sankey, Warrington, WA5 3YS

Proposed single storey side/rear extension

Full Planning (Householder) Warrington
17 Sept 2026 Pending Consideration 2026/01241/FULH

317 Chester Road, Grappenhall And Thelwall, Warrington, WA4 2QQ

Single storey front extension, garage conversion with new pitched roof over garage and widening of vehicular access with new entrance gates

Full Planning (Householder) Warrington
17 Sept 2026 Pending Consideration 2026/01229/FULH

8 York Drive, Grappenhall And Thelwall, Warrington, WA4 2EJ

Demolition of existing small outbuilding and proposed single storey rear extension, external patio works and loft conversion

Full Planning (Householder) Warrington
16 Sept 2026 Approved 16 Oct 2026/01227/CLDP

25 Orchard Street, Stockton Heath, Warrington, WA4 6LH

Proposed single storey side/rear extension

Certificate of Lawfulness (Proposed) Warrington
16 Sept 2026 Pending Consideration 2026/01200/FUL

Warrington & Vale Royal College, WARRINGTON AND VALE ROYAL COLLEGE Winwick Road, Warrington, WA2 8QA

Replacement of existing fencing with new weldmesh security fencing 2m high together with the re-provision of existing 1.2m high vertical rail fencing ...

Full Planning Warrington
16 Sept 2026 Pending Consideration 2026/01206/FULH

33 Silverdale Road, Latchford, Warrington, WA4 6BT

Erection of a part two-storey and part single storey side extension and a single-storey rear extension, and hard surfacing of front garden area to pro...

Full Planning (Householder) Warrington
16 Sept 2026 Pending Consideration 2026/01211/FULH

14 Village Close, Grappenhall And Thelwall, Warrington, WA4 2ST

First floor side extension and two storey rear extension, together with a front dormer.

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

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