House extensions in Maidstone

Maidstone received 385 householder applications in the last 12 months - about 7 a week. Rear extensions and garage works are the most common. Of the 193 decided so far, 171 were approved. If you're planning your own, the applications below show what people nearby applied for and how the council decided.

300 last 90 days
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73 last 30 days
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27 last 14 days

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Showing 50 of 300 applications
26/502627/FULL 9 Jul 2026 Awaiting decision

Pippins Chatham Road Sandling Kent ME14 3AY

Erection of a single-storey rear extension.

Maidstone 9 Jul 2026
26/502615/FULL 9 Jul 2026 Awaiting decision

5 Wents Wood Weavering Kent ME14 5BL

Demolition of existing conservatory and erection of single storey rear extensions to dining room and garage, including insertion of new window to side...

Maidstone 9 Jul 2026
26/502551/FULL 9 Jul 2026 Awaiting decision

197 Boxley Road Maidstone Kent ME14 2TL

Change of use of existing dwelling house (C3) into a 5 person HMO and conversion of lower ground floor into a two bedroom flat with the erection of a ...

Maidstone 9 Jul 2026
26/502573/FULL 8 Jul 2026 Awaiting decision

Cherrymere Keycol Hill Bobbing Kent ME9 7LG

Erection of a single storey rear extension and changes to fenestration.

Maidstone 8 Jul 2026
26/502603/FULL 8 Jul 2026 Awaiting decision

23 Halfpenny Close Maidstone Kent ME16 9AJ

Erection of first floor side extension over garage.

Maidstone 8 Jul 2026
26/502499/FULL 8 Jul 2026 Awaiting decision

89 Heath Road Maidstone Kent ME16 9LD

Widening of existing driveway, erection of new gates, alterations to front wall including height increase to 1000mm and extension of crossover and dro...

Maidstone 8 Jul 2026
26/502542/FULL 6 Jul 2026 Awaiting decision

2 Jewel Cottages Howland Road Marden Kent TN12 9EX

Demolition of existing garages and ancillary storage structures and erection of a replacement single-storey outbuilding

Full Maidstone 6 Jul 2026
26/502514/LAWPRO 6 Jul 2026 Awaiting decision

7 Mandarin Road Langley Kent ME17 3UJ

Lawful Development Certificate for proposed erection of domestic outbuilding

Lawful Development Cert. (Proposed) Maidstone 6 Jul 2026
26/502538/LBC 6 Jul 2026 Awaiting decision

Mote Hall Church Lane Bearsted Kent ME14 4EE

Listed Building Consent internal and external alterations and repairs including the refurbishment and replacement of windows and external doors to sou...

Listed Building Consent Maidstone 6 Jul 2026
26/502469/FULL 6 Jul 2026 Awaiting decision

Beech Court Lested Lane Chart Sutton Kent ME17 3RZ

Erection of garage and addition of associated access at far end of the garden and demolition of existing garage.

Full Maidstone 6 Jul 2026
26/502533/FULL 6 Jul 2026 Awaiting decision

18 Chapman Avenue Maidstone Kent ME15 8EN

Garage conversion into a habitable space, demolition of existing porch and replace with the erection of a pitched roof front porch, removal of existin...

Maidstone 6 Jul 2026
26/502166/FULL 3 Jul 2026 Awaiting decision

Horsham Lodge Horsham Lane Upchurch Kent ME9 7AL

Retrospective Planning application for erection of a single storey front and side extension to existing mobile home, to be used as an annexe to the ma...

Full Maidstone 3 Jul 2026
26/502487/FULL 3 Jul 2026 Awaiting decision

Haynes Ford Ashford Road Maidstone Kent ME14 5DQ

Proposed change of vehicle dealership branding from 'Changan' to 'Vauxhall', including replacement of windows.

Full Maidstone 3 Jul 2026
26/502482/FULL 3 Jul 2026 Awaiting decision

3 The Square Hunton Kent ME15 0RT

Demolish existing porch and replace with erection of a single storey front extension.

Full Maidstone 3 Jul 2026
26/502548/FULL 3 Jul 2026 Awaiting decision

Rendlesham Chatham Road Sandling Kent ME14 3AY

Erection of a single storey rear extension and a loft conversion incorporating raising of roof height, insertion of 2no flat roof dormers to side elev...

Full Maidstone 3 Jul 2026
26/502537/FULL 3 Jul 2026 Awaiting decision

Plot 12 Wardwell Lane Lower Halstow Kent ME9 7ER

Erection of 2no dayrooms to serve the previously approved 2 no. Gypsy/Traveller pitches.

Full Maidstone 3 Jul 2026
26/502518/LAWPRO 3 Jul 2026 Awaiting decision

Sheppey United FC Queenborough Road Halfway Kent ME12 3DB

Lawful Development Certificate for Proposed single storey rear extension to existing soft play building

Lawful Development Cert. (Proposed) Maidstone 3 Jul 2026
26/502527/FULL 3 Jul 2026 Awaiting decision

Church Farm Church Path Lower Halstow Kent ME9 7PN

Partial demolition of first floor, garage and balcony. Erection of first floor extension, with catslide roof alterations including installation of dor...

Maidstone 3 Jul 2026
26/502545/FULL 2 Jul 2026 Awaiting decision

6 Kings Acre Downswood Kent ME15 8UP

Erection of first floor side extension and car port.

Full Maidstone 2 Jul 2026
26/502556/FULL 2 Jul 2026 Awaiting decision

The Cottage Frinsted Road Milstead Kent ME9 0SA

Section 19 - Application for Variation of condition 2 (to allow change of materials) pursuant to 26/500256/LBC for Listed Building Consent for removal...

Full Maidstone 2 Jul 2026
26/502526/FULL 1 Jul 2026 Awaiting decision

Beggars Roost Cripple Street Maidstone Kent ME15 6BA

Removal of existing rear garden room and erection of a rear single storey extension with roof lanterns.

Full Maidstone 1 Jul 2026
26/502387/FULL 1 Jul 2026 Awaiting decision

Craiglea The Street Hartlip Kent ME9 7TH

Replacement of existing front door and frame.

Full Maidstone 1 Jul 2026
26/502419/FULL 1 Jul 2026 Awaiting decision

31 Reeves Close Staplehurst Kent TN12 0NN

Erection of a single storey side extension

Full Maidstone 1 Jul 2026
26/502500/PNEXT 29 Jun 2026 Awaiting decision

56 Newbury Avenue Maidstone Kent ME16 0RA

Prior notification for a proposed single storey rear extension which: A) Extends by 4 metres beyond the rear wall of the original dwelling. B) Has a m...

Prior Notification - Extensions Maidstone 29 Jun 2026
26/502356/LAWPRO 29 Jun 2026 Awaiting decision

171 Tonbridge Road Maidstone Kent ME16 8NA

Lawful Development Certificate for proposed conversion of dwelling house (C3) to 6 bedroom, 6 person HMO (C4) including erection of single storey rear...

Lawful Development Cert. (Proposed) Maidstone 29 Jun 2026
26/502474/FULL 29 Jun 2026 Awaiting decision

Hunton Lodge Hunton Road Marden Kent TN12 9SQ

Change of use of the land to restore the existing laser shooting range to its original function as a lunging yard, involving the removal of the shooti...

Full Maidstone 29 Jun 2026
26/502170/FULL 29 Jun 2026 Awaiting decision

Little Willows Eastwood Road Ulcombe Kent ME17 1ET

Change of use of land from residential (Use Class C3) to motor vehicle sales (Sui Generis), including erection of an office cabin and a shed, hardstan...

Full Maidstone 29 Jun 2026
26/502294/LAWPRO 26 Jun 2026 Awaiting decision

8 Brogden Crescent Leeds Kent ME17 1RA

Lawful Development Certificate for proposed extension to the existing dropped kerb

Lawful Development Cert. (Proposed) Maidstone 26 Jun 2026
26/502477/FULL 26 Jun 2026 Awaiting decision

20 Park Road Sittingbourne Kent ME10 1DR

Conversion of building currently used as offices into three apartments. Demolition and replacement of existing single-storey extension with new, part ...

Full Maidstone 26 Jun 2026
26/502375/PNEXT 26 Jun 2026 Awaiting decision

36 Lancet Lane Maidstone Kent ME15 9SA

Prior notification for a proposed single-storey rear extension which A) Extends 7.30 meters from rear wall of the original dwelling B) Has a maximum h...

Prior Notification - Extensions Maidstone 26 Jun 2026
26/502396/FULL 26 Jun 2026 Awaiting decision

574 Loose Road Loose Kent ME15 9UR

Erection of a front porch, part single and part two storey rear extension. Conversion of existing loft to include flat roof rear dormer, 1no. front ro...

Full Maidstone 26 Jun 2026
26/502457/FULL 26 Jun 2026 Awaiting decision

Wealden Hall House East Street Hunton Kent ME15 0RB

Installation of an electric vehicle (EV) charging point mounted on a free-standing timber post.

Full Maidstone 26 Jun 2026
26/502463/FULL 25 Jun 2026 Awaiting decision

7 Maple Avenue Maidstone Kent ME16 0DB

Erection of an outbuilding

Full Maidstone 25 Jun 2026
26/502468/FULL 25 Jun 2026 Awaiting decision

16 Arran Road Maidstone Kent ME15 9TE

Demolition of existing front roof canopy and wall. Erection of a single storey front, side and rear extensions and changes to fenestration.

Full Maidstone 25 Jun 2026
26/502462/FULL 25 Jun 2026 Awaiting decision

7 Maple Avenue Maidstone Kent ME16 0DB

Erection of a single storey rear extension and detached garage alterations to fenerstration.

Full Maidstone 25 Jun 2026
26/502344/FULL 25 Jun 2026 Awaiting decision

Swiss Cottage Bottlescrew Hill Boughton Monchelsea Kent ME17 4LY

Erection of an Orangery with Boot Room to the Southwest Elevation.

Full Maidstone 25 Jun 2026
26/502267/FULL 25 Jun 2026 Awaiting decision

Tudor Lodge Warden Road Eastchurch Kent ME12 4EN

Retrospective planning permission for installation of 8 foot fences in back garden between us and our neighbour.

Full Maidstone 25 Jun 2026
26/502454/FULL 25 Jun 2026 Awaiting decision

17 Nightingale Road Faversham Kent ME13 8RF

Part demolition of existing single storey kitchen & utility room and erection of a single storey replacement rear extension.

Full Maidstone 25 Jun 2026
26/502455/FULL 25 Jun 2026 Awaiting decision

Hickory House Hickmans Green Boughton Under Blean Kent ME13 9NT

Erection of a detached double garage with car port and ancillary accommodation above.

Full Maidstone 25 Jun 2026
26/502428/PNEXT 24 Jun 2026 Awaiting decision

80 Adelaide Drive Sittingbourne Kent ME10 1XU

Prior Notification for a proposed single-storey rear extension which A) Extends 5.00 meters from rear wall of the original dwelling B) Has a maximum h...

Prior Notification - Extensions Maidstone 24 Jun 2026
26/502441/LAWPRO 24 Jun 2026 Awaiting decision

Land To The North Of Rose Dale Lower Norton Lane Teynham Kent ME9 9LB

Lawful Development Certificate for the proposed stationing and occupation of a mobile home and erection of a timber building for the duration of the c...

Lawful Development Cert. (Proposed) Maidstone 24 Jun 2026
26/502384/FULL 24 Jun 2026 Awaiting decision

Preston House 15 Albion Place Maidstone Kent ME14 5DY

Removal of rear extension to no.15 and division to form 4 apartments. Construction of 4 apartments over storage in existing car park.

Full Maidstone 24 Jun 2026
26/502307/FULL 24 Jun 2026 Awaiting decision

Furrows Gravelly Bottom Road Kingswood Kent ME17 3PY

Erection of a first floor side extension, including 2no. new dormer windows (resubmission of 06/0259).

Full Maidstone 24 Jun 2026
26/502452/FULL 24 Jun 2026 Awaiting decision

2 The Stocks Ashford Road Sheldwich Kent ME13 0NH

Installation of new acoustic fence and internal alterations including concealed cellar access, repositioning of internal doors and new handrail to imp...

Full Maidstone 24 Jun 2026
26/502448/FULL 24 Jun 2026 Awaiting decision

75 Ospringe Street Faversham Kent ME13 8TW

Conversion of existing garage into habitable space.

Full Maidstone 24 Jun 2026
26/502293/FULL 24 Jun 2026 Awaiting decision

Woolhouse Oast Grove Lane Hunton Kent ME15 0SE

Erection of a single storey rear extension including 1no. rooflight and first floor dormer in existing cat-slide roof.

Full Maidstone 24 Jun 2026
26/502451/FULL 24 Jun 2026 Awaiting decision

10 Puttney Drive Sittingbourne Kent ME10 2SJ

Demolition of existing conservatory. Single storey rear extension with flat roof and roof lights.

Full Maidstone 24 Jun 2026
26/502442/FULL 24 Jun 2026 Awaiting decision

2 The Stocks Ashford Road Sheldwich Kent ME13 0NH

Erection of a single storey side extension and loft conversion.

Full Maidstone 24 Jun 2026
26/502393/FULL 23 Jun 2026 Awaiting decision

Grigg Farm Grigg Lane Headcorn Kent TN27 9LT

Conversion of an outbuilding of a Grade 2 Listed building into one bedroom ancillary residential annexe for an elderly family member.

Full Maidstone 23 Jun 2026
26/502408/PNEXT 23 Jun 2026 Awaiting decision

17 Saffron Way Sittingbourne Kent ME10 2EY

Prior notification for a proposed single storey rear extension which: A) Extends by 3.50 metres beyond the rear wall of the original dwelling. B) Has ...

Prior Notification - Extensions Maidstone 23 Jun 2026
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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 — taller, larger, 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 with objections) can take longer.
Can I get email alerts for new extensions applications in Maidstone?
Yes. Click "Set up alerts" on this page and you'll get a daily or weekly email listing every new extensions application published by Maidstone. You can also narrow the alert to a postcode, street, or drawn area.

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