House extensions in South Ayrshire

South Ayrshire received 240 householder applications in the last 12 months - about 5 a week. Garage works and garden rooms are the most common. Of the 179 decided so far, 178 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 79 applications
2 days ago Pending consideration 26/00611/APP

14 Crawford Avenue Prestwick South Ayrshire KA9 2BN

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
8 Sept 2026 Pending consideration 26/00602/APP

4 Shanter Way Ayr South Ayrshire KA7 4PF

Erection of boundary fence and gates

Planning Permission South Ayrshire
7 Sept 2026 Pending consideration 26/00594/APP

2 Templeton Crescent Prestwick South Ayrshire KA9 1JA

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
7 Sept 2026 Pending consideration 26/00596/APP

30 Rowallan Crescent Prestwick South Ayrshire KA9 2HE

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
5 Sept 2026 Pending consideration 26/00593/APP

24 Hawthorn Drive Ayr South Ayrshire KA7 3TB

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
4 Sept 2026 Pending 26/00591/APP

Ayr Racecourse Whitletts Road Ayr South Ayrshire KA8 0JE

Alterations and extension to weighing room and jockeys facilities

Planning Permission South Ayrshire
3 Sept 2026 Pending 26/00578/APP

12 Midton Road Ayr South Ayrshire KA7 2SF

Alterations and extension to dwellingflat

Planning Permission South Ayrshire
2 Sept 2026 Pending consideration 26/00583/APP

7 Shanter Place Ayr South Ayrshire KA7 4RD

Alterations and garage extension to dwellinghouse

Planning Permission South Ayrshire
1 Sept 2026 Pending 26/00576/APP

47 Maryborough Road Prestwick South Ayrshire KA9 1SW

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
31 Aug 2026 Pending 26/00574/APP

46 Castlehill Road Ayr South Ayrshire KA7 2JA

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
28 Aug 2026 Pending 26/00571/COL

22 Gavin Hamilton Court Ayr South Ayrshire KA7 3JE

Certificate of lawfulness for proposed alterations to dwellinghouse

Certificate of Lawfulness South Ayrshire
26 Aug 2026 Pending consideration 26/00567/APP

34 South Beach Troon South Ayrshire KA10 6EF

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
25 Aug 2026 Pending consideration 26/00515/APP

45 Bellrock Avenue Prestwick South Ayrshire KA9 1SQ

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
24 Aug 2026 Pending consideration 26/00435/COL

2 Wilson Avenue Troon South Ayrshire KA10 7AF

Certificate of lawfulness for proposed erection of a double garage

Certificate of Lawfulness South Ayrshire
24 Aug 2026 Pending consideration 26/00559/COL

14 Caerlaverock Avenue Prestwick South Ayrshire KA9 1HS

Certificate of lawfulness for the proposed alteration and extension to dwellinghouse

Certificate of Lawfulness South Ayrshire
20 Aug 2026 Pending consideration 26/00551/APP

21 Winston Avenue Prestwick South Ayrshire KA9 2EZ

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
20 Aug 2026 Pending consideration 26/00552/APP

Middlerigg Cottage Coylton South Ayrshire KA6 6LX

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
20 Aug 2026 Pending consideration 26/00554/APP

29 Ottoline Drive Troon South Ayrshire KA10 7AN

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
20 Aug 2026 Pending consideration 26/00553/APP

3 Collenan Avenue Loans South Ayrshire KA10 7HE

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
18 Aug 2026 Pending consideration 26/00542/APP

161 High Street Ayr South Ayrshire KA7 1QW

Change of use of Class 1A to betting shop (Sui Generis) and external alterations.

Planning Permission South Ayrshire
18 Aug 2026 Pending consideration 26/00539/APP

37 Miller Road Ayr South Ayrshire KA7 2AX

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
17 Aug 2026 Pending consideration 26/00535/APP

2A Monument Road Ayr South Ayrshire KA7 2RJ

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
17 Aug 2026 Pending consideration 26/00537/APP

15 Cedar Road Ayr South Ayrshire KA7 3PE

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
14 Aug 2026 Pending consideration 26/00534/APP

2 Monument Road Ayr South Ayrshire KA7 2RJ

Alterations to dwellinghouse

Planning Permission South Ayrshire
12 Aug 2026 Pending consideration 26/00517/APP

The Bothy B743 From A77t At Whitletts Roundabout To Mauchline Road Mossblown Ayr South Ayrshire KA6 5AE

Change of use and alterations to provide overnight staff accommodation and replacement of windows

Planning Permission South Ayrshire
12 Aug 2026 Pending consideration 26/00529/APP

2 Balvaird Road Kirkoswald South Ayrshire KA19 8JE

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
11 Aug 2026 Pending consideration 26/00507/APP

7 Castle Road Dunure South Ayrshire KA7 4LW

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
11 Aug 2026 Pending consideration 26/00523/APP

18 Glendoune Street Girvan South Ayrshire KA26 0AB

Alterations to out-building, formation of garage and ancillary accommodation.

Planning Permission South Ayrshire
11 Aug 2026 Pending consideration 26/00526/APP

49 Beach Road Troon South Ayrshire KA10 6SX

Retrospective alterations to dwellingflat

Planning Permission South Ayrshire
10 Aug 2026 Approved 26/00511/COL

Mainholm Farm Ayr South Ayrshire KA6 5HD

Certificate of lawfulnesss for proposed access road and alterations to dwellinghouse

Certificate of Lawfulness South Ayrshire
10 Aug 2026 Pending consideration 26/00521/APP

17 St Quivox Road Prestwick South Ayrshire KA9 1LJ

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
7 Aug 2026 Pending consideration 26/00520/APP

11 Savoy Court Ayr South Ayrshire KA7 2XP

Installation of modular galvanised steel disabled access ramp

Planning Permission South Ayrshire
6 Aug 2026 Pending determination 26/00516/APP

Ground Floor Right 13 Barassie Street Troon South Ayrshire KA10 6LU

Alterations to dwellingflat

Planning Permission South Ayrshire
3 Aug 2026 Pending consideration 26/00506/APP

26 Braeside Road Ayr South Ayrshire KA8 9RL

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
30 Jul 2026 Pending consideration 26/00494/APP

68 Culzean Road Maybole South Ayrshire KA19 8AH

Erection of a log cabin for ancillary residential accommodation

Planning Permission South Ayrshire
30 Jul 2026 Pending consideration 26/00501/COL

98 Logan Drive Troon South Ayrshire KA10 6XB

Certificate of lawfulness for proposed alterations and extension to dwellinghouse

Certificate of Lawfulness South Ayrshire
27 Jul 2026 Pending consideration 26/00490/APP

11 Arran View Dunure South Ayrshire KA7 4LP

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
24 Jul 2026 Pending consideration 26/00460/APP

51 Torcy Drive Girvan South Ayrshire KA26 0EU

Erection of garage

Planning Permission South Ayrshire
23 Jul 2026 Pending determination 26/00487/APP

8 Bentfield Drive Prestwick South Ayrshire KA9 1TT

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
22 Jul 2026 Pending consideration 26/00464/COL

6A Ronaldshaw Park Ayr South Ayrshire KA7 2TJ

Certificate of lawfulness for exterior repairs to dwellingflat

Certificate of Lawfulness South Ayrshire
22 Jul 2026 Pending consideration 26/00478/APP

35 Deveron Road Troon South Ayrshire KA10 7EG

Alterations an extension to dwelinghouse

Planning Permission South Ayrshire
22 Jul 2026 Approved 26/00480/APP

26A - 26B Queens Court Sandgate Ayr South Ayrshire KA7 1LE

Alterations and change of use from offices to form residential accommodation

Planning Permission South Ayrshire
20 Jul 2026 Pending determination 26/00473/APP

12 Tarbolton Road Dundonald South Ayrshire KA2 9HQ

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
20 Jul 2026 Pending determination 26/00474/APP

6 Ainslie Road Girvan South Ayrshire KA26 0AY

Alterations and extension to dwellinghouse, erection of garage and installation of gates

Planning Permission South Ayrshire
20 Jul 2026 Pending consideration 26/00475/APP

9 Holding Ayr South Ayrshire KA6 5HD

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
17 Jul 2026 Decided 26/00468/PNF

14 Deacon's Place Girvan South Ayrshire KA26 9BZ

Prior notification for replacement windows

Prior Notification South Ayrshire
16 Jul 2026 Approved 26/00452/APP

71 Patna Road Kirkmichael South Ayrshire KA19 7PJ

Erection of a garden shed

Planning Permission South Ayrshire
16 Jul 2026 Approved 26/00469/APP

1 Damside Ayr South Ayrshire KA8 8ER

Alterations and extension to office building and erection of storage shed

Planning Permission South Ayrshire
16 Jul 2026 Pending determination 26/00470/APP

17 Castle Walk Ayr South Ayrshire KA7 4HH

Alterations and extension to dwellinghouse

Planning Permission South Ayrshire
15 Jul 2026 Pending determination 26/00447/COL

48 Milton Crescent Troon South Ayrshire KA10 7LS

Certificate of lawfulness for the erection of proposed garden room

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

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