House extensions in York

York received 739 householder applications in the last 12 months - about 14 a week. Rear extensions and side extensions are the most common. Of the 558 decided so far, 496 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 205 applications
Yesterday Awaiting decision 26/01682/LBC

38A Fossgate York YO1 9TF

Replacement of two timber casement windows serving 38A and 39 Fossgate

Listed Building Consent York
23 Oct 2026 Awaiting decision 26/01899/FUL

84 Maple Grove York YO10 4EH

Single storey rear extension, dormers to front and rear roofslopes and 2no. windows to side elevation

Full Application York
23 Oct 2026 Awaiting decision 26/01742/FUL

78 Mill Lane Wigginton York YO32 2PZ

Single storey side and rear extensions

Full Application York
22 Oct 2026 Awaiting decision 26/01891/FUL

22 Sandyland Haxby York YO32 2FG

Single storey side and rear extension

Full Application York
22 Oct 2026 Awaiting decision 26/01896/FUL

121 Stockton Lane York YO31 1JA

Two-storey side and rear extensions, raise ridge height, 5no rooflights and solar panels to front roofslope and 2no. dormers to rear roofslope

Full Application York
22 Oct 2026 Awaiting decision 26/01811/FUL

52 Albion Avenue York YO26 5QY

Single storey side and rear extensions

Full Application York
21 Oct 2026 Awaiting decision 26/01882/FUL

38 Robert Street York YO23 1PS

First floor rear extension and alterations to rear fenestration

Full Application York
20 Oct 2026 Decided 20 Oct 26/01308/LBC

Circuit 12 Clifford Street York YO1 9RD

Repair works to external facade

Listed Building Consent York
20 Oct 2026 Awaiting decision 26/01876/FUL

29 Lakeside Acaster Malbis York YO23 2TY

Single storey rear extension, partial conversion of existing garage into habitable accommodation and front porch extension. Replacement timber gates t...

Full Application York
19 Oct 2026 Awaiting decision 26/01643/FUL

7 Heslington Court Heslington York YO10 5EX

Single storey front/side extension

Full Application York
19 Oct 2026 Awaiting decision 26/01867/FUL

6 St Nicholas Crescent Copmanthorpe York YO23 3UZ

Detached garden room to rear

Full Application York
16 Oct 2026 Awaiting decision 26/01865/CPD

11 Harcourt Street York YO31 0XF

Certificate of lawfulness for proposed development of a rear dormer and 1no. rooflight to front.

Certificate of Lawful Proposed Devlpmnt York
16 Oct 2026 Awaiting decision 26/01856/FUL

116 Newland Park Drive York YO10 3HP

Hip to gable roof extension and rear dormer

Full Application York
16 Oct 2026 Awaiting decision 26/01855/FUL

10 Southfield Close Rufforth York YO23 3RE

Single storey rear extension and part garage conversion including raising the roof height.

Full Application York
16 Oct 2026 Awaiting decision 26/01839/FUL

24 Ploughmans Lane Haxby York YO32 2WR

Single storey side and rear extensions

Full Application York
15 Oct 2026 Awaiting decision 26/01863/PAAA

10 Kimberlow Woods Hill York YO10 5HF

Enlargement of dwellinghouse by construction of 1no. additional storey with new roof height no greater than 3.5 metres above the highest part of the e...

Prior Approval - Part 1 Class AA York
15 Oct 2026 Awaiting decision 26/01853/FUL

Verandah Cottages Bluebeck Drive York YO30 5RA

Alterations to access and the construction of a boundary wall to side

Full Application York
15 Oct 2026 Awaiting decision 26/01844/LHE

25 Windmill Lane York YO10 3LG

Erection of single storey extension extending 5 metres beyond the rear wall of the original house, with a height to the eaves of 2.8 metres and a tota...

Large Householder Extension York
14 Oct 2026 Awaiting decision 26/01845/LHE

83 Mill Lane Wigginton York YO32 2QA

Erection of single storey extension extending 5.3 metres beyond the rear wall of the original house, with a height to the eaves of 2.5 metres and a to...

Large Householder Extension York
14 Oct 2026 Awaiting decision 26/01842/CPD

9 Spurr Court York YO24 3ND

Certificate of lawfulness for proposed development of a single storey rear extension

Certificate of Lawful Proposed Devlpmnt York
14 Oct 2026 Awaiting decision 26/01641/FUL

13 Heslington Croft York YO10 4NB

Single storey rear extension

Full Application York
14 Oct 2026 Awaiting decision 26/01716/FUL

65 Osbaldwick Lane York YO10 3AY

Change of use from office space (Use Class E) to guest accommodation (Use Class C1) and single-storey rear extension

Full Application York
13 Oct 2026 Awaiting decision 26/01837/LHE

155 Lowther Street York YO31 7LZ

Erection of single storey extension extending 5 metres beyond the rear wall of the original house, with a height to the eaves of 3 metres and a total ...

Large Householder Extension York
13 Oct 2026 Awaiting decision 26/01835/FUL

6 Portland Street York YO31 7EH

Single storey rear extension and rear dormer

Full Application York
13 Oct 2026 Awaiting decision 26/01816/CPD

16 Earswick Chase Earswick York YO32 9FY

Certificate of lawfulness for proposed development of a single storey rear extension

Certificate of Lawful Proposed Devlpmnt York
12 Oct 2026 Awaiting decision 26/01830/FUL

28 Hob Moor Terrace York YO24 1EY

Single storey side and rear extension following demolition of garage and store

Full Application York
12 Oct 2026 Awaiting decision 26/01796/LHE

Hambleton View Wetherby Road Rufforth York YO23 3QF

Erection of single storey extension extending 7.3 metres beyond the rear wall of the original house, with a height to the eaves of 2.6 metres and a to...

Large Householder Extension York
12 Oct 2026 Awaiting decision 26/01781/FUL

8 Church Gate York YO26 5BW

Detached outbuilding to rear

Full Application York
9 Oct 2026 Awaiting decision 26/01802/FUL

20 St Oswalds Road York YO10 4PF

Single storey rear extension, replacement windows throughout, alterations to fenestration and repositioning of gate

Full Application York
9 Oct 2026 Awaiting decision 26/01794/FUL

The Knoll Boroughbridge Road York YO26 6QB

Single storey rear extension, 2no. dormers to front roofslope, installation of rooflights, french doors to rear and application of render to front ele...

Full Application York
8 Oct 2026 Awaiting decision 26/01822/FUL

4 York Road Strensall York YO32 5XT

First floor rear extension and alteration to rear dormers

Full Application York
8 Oct 2026 Awaiting decision 26/01800/FUL

15 Midway Avenue Nether Poppleton York YO26 6NT

Single storey front and rear extensions and first floor rear extension

Full Application York
8 Oct 2026 Awaiting decision 26/01784/FUL

27 Swale Avenue York YO24 2PU

Two storey side and single storey front and side extensions

Full Application York
7 Oct 2026 Awaiting decision 26/01814/FUL

63 Albion Avenue York YO26 5QZ

Single storey side extension

Full Application York
7 Oct 2026 Awaiting decision 26/01809/FUL

72 Princess Drive York YO26 5SY

Single storey side and rear extensions and new 2m high boundary wall to side

Full Application York
7 Oct 2026 Awaiting decision 26/01806/CPD

78 Wetherby Road Acomb York YO26 5BY

Certificate of lawfulness for proposed development of a hip to gable roof extension and rear dormer

Certificate of Lawful Proposed Devlpmnt York
7 Oct 2026 Awaiting decision 26/01805/FUL

46 Shipton Road Clifton York YO30 5RF

Two storey side extension, single storey rear extension and detached carport to side

Full Application York
7 Oct 2026 Awaiting decision 26/01778/CPD

35 Whernside Avenue York YO31 0QB

Certificate of lawfulness for proposed development of a detached outbuilding

Certificate of Lawful Proposed Devlpmnt York
7 Oct 2026 Awaiting decision 26/01779/PAAA

22 Riversvale Drive Nether Poppleton York YO26 6JY

Enlargement of dwellinghouse by construction of 1no. additional storey with new roof height no greater than 3.5 metres above the highest part of the e...

Prior Approval - Part 1 Class AA York
6 Oct 2026 Awaiting decision 26/01812/FUL

39 Keble Park North Bishopthorpe York YO23 2SX

Two storey rear extension

Full Application York
6 Oct 2026 Awaiting decision 26/01787/FUL

1 Chapelfields Road York YO26 5AA

Two and single storey side extensions and single storey front extension

Full Application York
6 Oct 2026 Awaiting decision 26/01770/FUL

21 Danebury Drive York YO26 5EQ

Hip to gable roof extension and rear dormer

Full Application York
5 Oct 2026 Awaiting decision 26/01761/LBC

York Dungeon 12 Clifford Street York YO1 9RD

Installation of security gates to rear

Listed Building Consent York
5 Oct 2026 Awaiting decision 26/01791/FUL

2 The Horseshoe York YO24 1LX

Conversion of garage to habitable space with external terrace

Full Application York
2 Oct 2026 Awaiting decision 26/01768/FUL

30 Sycamore Close Skelton York YO30 1YU

First floor side extension, single storey side and front extension and alterations to rear conservatory

Full Application York
2 Oct 2026 Awaiting decision 26/01759/FUL

67 Beech Grove York YO26 5JY

Single storey rear extension with associated steps, patio and landscape arrangement to rear

Full Application York
1 Oct 2026 Awaiting decision 26/01775/FUL

50 Earswick Chase Earswick York YO32 9FY

3no. dormers to rear roof slope and 3no. rooflights to front (part retrospective)

Full Application York
1 Oct 2026 Awaiting decision 26/01776/FUL

87 Station Road Upper Poppleton York YO26 6PZ

Two storey side and rear extension, single storey side/rear extension, repositioning existing first floor rear window and solar panels to rear

Full Application York
30 Sept 2026 Awaiting decision 26/01763/FUL

9 The Hollies Stockton On The Forest York YO32 9UW

Single storey rear and side extension and rooflights to front and rear roofslopes

Full Application York
30 Sept 2026 Awaiting decision 26/01747/LHE

27 Swale Avenue York YO24 2PU

Erection of single storey extension extending 6 metres beyond the rear wall of the original house, with a height to the eaves of 2.9 metres and a tota...

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

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