House extensions in South Cambridgeshire

South Cambridgeshire received 577 householder applications in the last 12 months - about 11 a week. Rear extensions and garage works are the most common. Of the 397 decided so far, 384 were approved. If you're planning your own, the applications below show what people nearby applied for and how the council decided.

237
|
66
|
20
Get alerts for South Cambridgeshire

Filter applications

Date receivedLast 90 days
Date receivedLast 90 days
Select one year, or two for a range.
Number of homesAny
StatusAny
Application routeAny
Application type1 selected
KeywordsNone
Match

Matches words or phrases in the application address and description.

Showing 50 of 237 applications
7 Sept 2026 Awaiting decision 26/03412/HFUL

3 School Lane Swavesey Cambridgeshire CB24 4RL

Single storey rear extension.

Householder Works/Extension South Cambridgeshire
7 Sept 2026 Pending 26/03295/HFUL

4 Dukes Meadow Stapleford Cambridgeshire CB22 5BH

Single storey front and rear extensions. Partial conversion of existing garage to habitable space, including pitched roof to garage. Alterations to fe...

Householder Works/Extension South Cambridgeshire
4 Sept 2026 Pending 26/03389/HFUL

Bourn Grove 12 Bourn Bridge Road Little Abington Cambridgeshire CB21 6BJ

Ground floor rear and side extensions and first floor rear extension. Installation of new front porch canopy and side porch canopy.

Householder Works/Extension South Cambridgeshire
4 Sept 2026 Pending 26/03390/HFUL

16 High Street Grantchester Cambridgeshire CB3 9NF

Re-roofing of west and part east slopes of existing roof.

Householder Works/Extension South Cambridgeshire
2 Sept 2026 Pending 26/03327/HFUL

38 East Drive Highfields Caldecote Caldecote Cambridgeshire CB23 7NZ

Demolition of the garage. One and half storey front and side extension and internal alterations.

Householder Works/Extension South Cambridgeshire
2 Sept 2026 Pending 26/03334/HFUL

Springhill Lodge Brinkley Road Weston Colville Cambridgeshire CB21 5PA

Demolition of conservatory, single storey rear and infill extensions, raising the ridge height of the infill extension.

Householder Works/Extension South Cambridgeshire
2 Sept 2026 Pending 26/03322/HFUL

46 Millfield Willingham Cambridgeshire CB24 5HD

Two storey side extension and single storey rear and front extension, including alterations to the primary frontage. Works to include hard and soft la...

Householder Works/Extension South Cambridgeshire
2 Sept 2026 Pending 26/03165/HFUL

72 Pierce Lane Fulbourn Cambridgeshire CB21 5DL

Rear single storey extension, internal reconfiguration, window replacement, new roof overhang, two storey front extension, garage roof replacement, ai...

Householder Works/Extension South Cambridgeshire
2 Sept 2026 Pending 26/03213/HFUL

15 Impington Lane Impington Cambridgeshire CB24 9LT

Single storey side extension to create a porch and new doors to the rear elevation.

Householder Works/Extension South Cambridgeshire
2 Sept 2026 Awaiting decision 26/03194/HFUL

10 Paddock Row Elsworth Cambridgeshire CB23 4JG

Roof extension with rear dormer and erection of outbuilding in rear garden.

Householder Works/Extension South Cambridgeshire
2 Sept 2026 Awaiting decision 26/03249/HFUL

19 Church Street Little Shelford Cambridgeshire CB22 5HG

Part one-storey, part two-storey rear and side extension following demolition of existing rear extension and garage

Householder Works/Extension South Cambridgeshire
2 Sept 2026 Awaiting decision 26/03326/FUL

1 Workshop And Premises River Lane Haslingfield Cambridgeshire CB23 1LX

Minor external alterations including: New composite aluminium windows and doors with timber infill panels to match, existing woodwork (fascias, claddi...

Full Application South Cambridgeshire
1 Sept 2026 Pending 26/02942/HFUL

Abbey Farm 14 Duxford Road Ickleton Cambridgeshire CB10 1SX

Form a new vehicular entrance and driveway, convert barn to ancillary residential accommodation, and alterations to fenestration and associated works.

Householder Works/Extension South Cambridgeshire
1 Sept 2026 Awaiting decision 26/02945/LBC

Abbey Farm 14 Duxford Road Ickleton Cambridgeshire CB10 1SX

Convert barn to ancillary residential accommodation with alterations to the internal and external arrangement and fenestration.

Listed Building Consent South Cambridgeshire
1 Sept 2026 Pending 26/03180/HFUL

59 London Road Stapleford Cambridgeshire CB22 5DG

Detached single storey workshop, and garden shed to rear garden.

Householder Works/Extension South Cambridgeshire
1 Sept 2026 Pending 26/03174/HFUL

3 Finch's Close Stapleford Cambridgeshire CB22 5BL

Demolition of existing garage. Two storey side extension with integrated garage. Single storey side extension, change to front roof form. Porch canopy...

Householder Works/Extension South Cambridgeshire
1 Sept 2026 Pending 26/03179/HFUL

30 Meadow Lane Over Cambridgeshire CB24 5NF

Proposed double garage to front garden with solar panels

Householder Works/Extension South Cambridgeshire
28 Aug 2026 Awaiting decision 26/03279/HFUL

70 Cambridge Road Great Shelford Cambridgeshire CB22 5JS

Double garage.

Householder Works/Extension South Cambridgeshire
28 Aug 2026 Pending 26/03282/LBC

15 North End Bassingbourn Cum Kneesworth Cambridgeshire SG8 5NX

Single storey side and rear extension with roof lantern and new external bi-fold door to the rear. Ground floor internal alterations to create a new s...

Listed Building Consent South Cambridgeshire
28 Aug 2026 Pending 26/03285/S73

50 Rosemary Road Waterbeach Cambridgeshire CB25 9NB

S73 to vary conditions 2 (Approved plans) and 3 (Materials) of planning permission 25/03041/HFUL (Construction of an annexe to the rear within the res...

Section 73 - Remove/Vary Condition South Cambridgeshire
27 Aug 2026 Pending 26/03268/HFUL

10 Poplar Road Histon Cambridgeshire CB24 9LN

Two storey rear/side extension and dormer window to existing side elevation.

Householder Works/Extension South Cambridgeshire
27 Aug 2026 Pending 26/03212/FUL

Land Adjacent To 104 Station Road Great Wilbraham Cambridgeshire CB21 5JA

Change of use of public highway land from public highway to private residential garden, together with the construction of a low level boundary fence/h...

Full Application South Cambridgeshire
27 Aug 2026 Awaiting decision 26/03205/LBC

31 Mill Lane Bassingbourn Cum Kneesworth Cambridgeshire SG8 5PP

Installation of staircase, new internal partition, upgrading first floor storage area to a shower room, minor alterations to internal layout and 3no.r...

Listed Building Consent South Cambridgeshire
27 Aug 2026 Pending 26/03266/PRIOR

7 Dodford Lane Girton Cambridgeshire CB3 0QE

Erection of a single storey rear extension following demolition of existing conservatory.

Prior Approval South Cambridgeshire
26 Aug 2026 Pending 26/03247/HFUL

27 Dolphin Lane Melbourn Cambridgeshire SG8 6AE

Part two storey and part first floor rear extension. Single storey front extension (porch) and canopy.

Householder Works/Extension South Cambridgeshire
26 Aug 2026 Pending 26/03237/CL2PD

106 Cambridge Road Waterbeach Cambridgeshire CB25 9NJ

Certificate of lawfulness under S192 for the construction of a replacement conservatory on side elevation.

Lawful Use Certificate (S192) South Cambridgeshire
25 Aug 2026 Pending 26/03224/HFUL

67 West Drive Highfields Caldecote Caldecote Cambridgeshire CB23 7NY

Single storey front and side extensions following demolition of existing covered porch and conservatory. Alterations to fenestration and render to ext...

Householder Works/Extension South Cambridgeshire
25 Aug 2026 Awaiting decision 26/03229/HFUL

6 Coles Lane Oakington And Westwick Cambridgeshire CB24 3BA

Proposed partial demolition of existing linked outbuilding and erection of a replacement linked structure with new gym, sauna and outdoor kitchen alon...

Householder Works/Extension South Cambridgeshire
24 Aug 2026 Pending 26/03210/HFUL

129A High Street Cottenham Cambridgeshire CB24 8SD

Infilling and cladding of existing cart lodge to create outbuilding, including addition of veranda to rear.

Householder Works/Extension South Cambridgeshire
24 Aug 2026 Pending 26/03222/LBC

54 Boxworth Road Elsworth Cambridgeshire CB23 4JQ

Installation of a domestic sink and pedestal in small room connected to a bedroom, Water feed and waste to be surface mounted, Feed to connect to exis...

Listed Building Consent South Cambridgeshire
24 Aug 2026 Awaiting decision 26/03195/HFUL

35 Star Drive Waterbeach Cambridgeshire CB25 9RE

Single storey rear extension.

Householder Works/Extension South Cambridgeshire
24 Aug 2026 Awaiting decision 26/02957/HFUL

Land Between 40 And 42 Church Street Stapleford Cambridgeshire CB22 5DS

New pedestrian access rear garden gate

Householder Works/Extension South Cambridgeshire
24 Aug 2026 Awaiting decision 26/03160/HFUL

17 Somerset Road Histon Cambridgeshire CB24 9JS

Proposed two storey and single storey side extension plus loft conversion with velux roof lights

Householder Works/Extension South Cambridgeshire
24 Aug 2026 Awaiting decision 26/03193/HFUL

6 Mill Lane Hinxton Cambridgeshire CB10 1RD

Single storey rear and side extension, front porch, and shed to the side of the dwelling.

Householder Works/Extension South Cambridgeshire
21 Aug 2026 Pending 26/03121/FUL

Holy Trinity Church High Street Hildersham Cambridgeshire CB21 6BU

New air source heat pump and enclosure with new electricity supply and erection of new shed.

Full Application South Cambridgeshire
21 Aug 2026 Pending 26/03186/HFUL

22 Water Lane Histon Cambridgeshire CB24 9LR

Proposed outbuilding for use as a home gym.

Householder Works/Extension South Cambridgeshire
21 Aug 2026 Awaiting decision 26/03067/HFUL

20 Station Road Steeple Morden Cambridgeshire SG8 0NW

Demolition of existing garage and first floor side element. Two storey front extension, including porch canopy to front. Two storey side and rear exte...

Householder Works/Extension South Cambridgeshire
20 Aug 2026 Awaiting decision 26/03168/LBC

Milton Hall Ely Road Milton Cambridgeshire CB24 6WZ

Roof repairs to the second-floor rear terrace to include: works to strengthen the existing joists, replace sections of perimeter timber to improve bal...

Listed Building Consent South Cambridgeshire
20 Aug 2026 Awaiting decision 26/02859/HFUL

14 Howgate Road Impington Cambridge Cambridgeshire CB4 3XL

Ground floor front with porch, rear and side extensions

Householder Works/Extension South Cambridgeshire
19 Aug 2026 Awaiting decision 26/03226/HFUL

St Georges High Street Croydon Cambridgeshire SG8 0DR

Creation of an additional storey including the raising of the eaves and ridge by 1.5m and the addition of dormer windows.

Householder Works/Extension South Cambridgeshire
19 Aug 2026 Awaiting decision 26/03151/FUL

51 High Street Harston Cambridgeshire CB22 7PZ

New access, boundary wall and gate along with erection of new cart lodge.

Full Application South Cambridgeshire
19 Aug 2026 Awaiting decision 26/02988/HFUL

15 Hartley Close Waterbeach Cambridgeshire CB25 9NG

Demolish existing rear store. Single storey rear extension.

Householder Works/Extension South Cambridgeshire
18 Aug 2026 Awaiting decision 26/03138/CL2PD

17 Sable Close Teversham Cambridge Cambridgeshire CB1 9YX

Proposed Single Storey Rear Extension (all external materials to be provided to match the existing including facing brick, roof tile, window and door ...

Lawful Use Certificate (S192) South Cambridgeshire
18 Aug 2026 Awaiting decision 26/03144/HFUL

1 Blue Lion Close Fen Ditton Cambridgeshire CB5 8ZB

Loft conversion with rear facing dormer and Velux roof lights to front and side elevations.

Householder Works/Extension South Cambridgeshire
18 Aug 2026 Awaiting decision 26/03092/HFUL

Highbank Church Lane Kingston Cambridgeshire CB23 2NG

Single storey side extension and exterior stucco with siding.

Householder Works/Extension South Cambridgeshire
18 Aug 2026 Awaiting decision 26/03003/HFUL

13A Finchs Field Little Eversden Cambridgeshire CB23 1HG

Single storey side and rear extensions including conversion of existing garage to habitable space.

Householder Works/Extension South Cambridgeshire
17 Aug 2026 Awaiting decision 26/03122/LBC

Holy Trinity Church High Street Hildersham Cambridgeshire CB21 6BU

New air source heat pump and enclosure with new electricity supply and erection of new shed.

Listed Building Consent South Cambridgeshire
17 Aug 2026 Awaiting decision 26/03112/HFUL

3 Knights Way Milton Cambridgeshire CB24 6DE

Single storey front extension. Two storey side extension and part single, part two storey rear extension.

Householder Works/Extension South Cambridgeshire
17 Aug 2026 Awaiting decision 26/03111/LBC

125 High Street Hinxton Cambridgeshire CB10 1RF

Single storey rear extension following demolition of existing conservatory. Single storey lean to side extension, internal alterations and replacement...

Listed Building Consent South Cambridgeshire
17 Aug 2026 Awaiting decision 26/03110/HFUL

125 High Street Hinxton Cambridgeshire CB10 1RF

Single storey rear extension following demolition of existing conservatory. Single storey side extension and replacement windows.

Householder Works/Extension South Cambridgeshire
Recency
Last 2 weeks
2-4 weeks
1-2 months
Older

Get free email alerts for new extensions applications in South Cambridgeshire

Set up alerts

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 Cambridgeshire?
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 Cambridgeshire. You can also narrow the alert to a postcode, street, or drawn area.

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