House extensions in Flintshire

Flintshire received 248 householder applications in the last 12 months - about 5 a week. Rear extensions and garage works are the most common. Of the 168 decided so far, 156 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 86 applications
7 Sept 2026 Application Valid FUL/000757/26

9, Higher Common Road, Buckley, CH7 3NG

Side and Rear Extension

Full - Building Works Flintshire
7 Sept 2026 Application Valid FUL/000745/26

RAKE COTTAGE, Rake Lane, Hawarden, Deeside, CH5 3PN

New Garage and Storage Space

Full - Building Works Flintshire
7 Sept 2026 Pending FUL/000698/26

35 , Wepre Lane, Connahs Quay, CH5 4JR

Proposed rear extension and internal modifications

Full - Building Works Flintshire
3 Sept 2026 Pending FUL/000732/26

61, High Street, Holywell, CH8 7TF

Single storey extension to rear of existing premises

Full - Building Works Flintshire
2 Sept 2026 Consultation period opened FUL/000735/26

Roseneath, 5 , Hawarden Road, Penyffordd, CH4 0JD

Proposed bungalow to dormer bungalow extension, single storey rear extension and 2 storey rear extension.

Full - Building Works Flintshire
2 Sept 2026 Consultation period opened LBC/000737/26

PLAS HAFOD HOTEL, Hafod Road, Gwernymynydd, Mold, CH7 5JS

Listed Building Consent - Demolition of existing conservatory and construction of timber decked seating area

Listed Building Extensions and Alterations Flintshire
2 Sept 2026 Consultation period opened FUL/000736/26

PLAS HAFOD HOTEL, Hafod Road, Gwernymynydd, Mold, CH7 5JS

Demolition of existing conservatory and construction of timber decked seating area

Full - Building Works Flintshire
1 Sept 2026 Consultation period opened FUL/000726/26

Briarfield, Old Aston Hill, Ewloe, Deeside, CH5 3AH

Construction of a new tarmac driveway with an integrated linear drainage system connected to an internal soakaway. Widening of the existing access ont...

Full - Building Works Flintshire
27 Aug 2026 Pending FUL/000720/26

65, Beechwood Road, Saltney, Chester, CH4 8TN

Rear extension for disabled adaptation

Full - Building Works Flintshire
27 Aug 2026 Pending FUL/000722/26

71, Parkfield Road, Broughton, Chester, CH4 0SA

Single-storey pitched roof front extension to provide a fully accessible shower

Full - Building Works Flintshire
27 Aug 2026 Under Consideration LDP/000719/26

NANT Y GLYN, Alltami Road, Alltami, Mold, CH7 6RW

Proposed garden room in garden of existing house

Certificate of Lawfulness Sec 192 Flintshire
27 Aug 2026 Consultation period opened FUL/000706/26

17, Manor Drive, Buckley, CH7 2HX

Extension to rear garden using common land adopted by highways

Full - Building Works Flintshire
27 Aug 2026 Pending FUL/000692/26

Haddef, Llinegar Hill, Ffynnongroyw, CH8 9SY

Proposed Extensions & Major Alterations & Proposed Oak Frame Car Port & Partial

Full - Building Works Flintshire
25 Aug 2026 Consultation period opened FUL/000691/26

5 Eccleston Road Higher Kinnerton

Single storey rear extension and replacement of front window with patio doors

Full - Building Works Flintshire
24 Aug 2026 Consultation period opened FUL/000709/26

Lisla, 30, Little Mountain Road, Buckley, CH7 3BY

Proposed Single Storey Rear Extension

Full - Building Works Flintshire
24 Aug 2026 Withdrawn FUL/000704/26

Bryn Haul, Moel Y Crio, Mold, CH7 6PY

Proposed conversion and extension of existing office into ancillary accommodatio

Full - Building Works Flintshire
24 Aug 2026 Consultation period opened FUL/000702/26

20, Eaton Close, Broughton, Chester, CH4 0RF

Single storey side and rear extensions

Full - Building Works Flintshire
24 Aug 2026 Consultation period opened FUL/000693/26

Norwood, Pantymwyn, Mold, CH7 5EP

Replacement of existing timber balustrade to balcony/deck with a structural glass balustrade and stainless steel handrail.

Full - Building Works Flintshire
24 Aug 2026 Consultation period opened FUL/000690/26

16, Tram Road, Buckley, CH7 3NH

Single storey rear extension to form utility and WC

Full - Building Works Flintshire
24 Aug 2026 Consultation period opened FUL/000677/26

114, Hawarden Way, Mancot, Deeside, CH5 2EW

Want to put tall fence and gates at the front of the property as it is by the bus stop. Bus stop and front garden was on fire couple years ago so wan...

Full - Building Works Flintshire
21 Aug 2026 Consultation period opened FUL/000699/26

85, Pen Y Maes Road, Holywell, CH8 7EG

Demolition of side porch extension - Proposed Single storey side extension - Disabled adaption

Full - Building Works Flintshire
21 Aug 2026 Consultation period opened FUL/000695/26

45 , Howard Street, Connahs Quay, CH5 4QQ

Single-storey flat roof rear extension to provide a living room and internal alterations to form a fully accessible shower room, existing living room ...

Full - Building Works Flintshire
21 Aug 2026 Under Consideration AGN/000684/26

Land off Ffordd Pennant, Maes Pennant, Holywell, CH8 9PJ

Steel frame and clad storage shed

Prior Approval Agriculture Flintshire
11 Aug 2026 Consultation period opened LBC/000679/26

HAWKESBURY LITTLE THEATRE, Mill Lane, Buckley, CH7 3HB

Listed Building Consent - Replacement of existing roof and wall covering/finish. Install changing room and storage with access/hallway.

Listed Building Extensions and Alterations Flintshire
11 Aug 2026 Consultation period opened FUL/000678/26

HAWKESBURY LITTLE THEATRE, Mill Lane, Buckley, CH7 3HB

Replacement of existing roof and wall covering/finish. Install changing room and storage with access/hallway.

Full - Building Works Flintshire
10 Aug 2026 Consultation period opened FUL/000680/26

9, Kiln Lane, Hope, Wrexham, LL12 9PH

Proposed single storey rear extension and removal of existing garage (with new garage under permitted development)

Full - Building Works Flintshire
10 Aug 2026 Under Consideration FUL/000513/26

The Oaklands, RHOS FARM, Rhos Road, Penyffordd, Chester, CH4 0JR

3 x dormer roof windows built in existing detached garage with storage in roof space. Pitched roof style, tiled to match. Dormers are set back 750mm f...

Full - Building Works Flintshire
6 Aug 2026 Consultation period opened FUL/000667/26

55, High Street, Connahs Quay, Deeside, CH5 4DD

Replacement of the existing front elevation timber window, facing the public roadway, with a new aluminium/PVC window of a similar size and style. The...

Full - Building Works Flintshire
4 Aug 2026 Consultation period opened FUL/000670/26

20, THE MOUNT, Ewloe Place, Buckley, CH7 3NL

Dropped kerb for vehicle access

Full - Building Works Flintshire
4 Aug 2026 Recommendation made LDP/000659/26

3, Cae Eithin, Lixwm, Holywell, CH8 8NB

Single storey rear extension

Certificate of Lawfulness Sec 192 Flintshire
3 Aug 2026 Approved FUL/000663/26

40, Main Road, Higher Kinnerton, Chester, CH4 9AJ

1st floor extension to property

Full - Building Works Flintshire
1 Aug 2026 Consultation period opened FUL/000664/26

CRESTA, Old Aston Hill, Ewloe, Deeside, CH5 3AL

First floor side extension over existing garage

Full - Building Works Flintshire
31 Jul 2026 Approved FUL/000648/26

3, Green Farm Court, Higher Kinnerton, CH4 9DD

Proposed Alteration to Rear Elevation, replacement of Existing Windows with Bifold Door to match opening width.

Full - Building Works Flintshire
31 Jul 2026 Under Consideration FUL/000658/26

Sundown, Trelogan, Holywell, CH8 9BZ

Alterations and extension to existing dwelling and construction of detached garage.

Full - Building Works Flintshire
31 Jul 2026 Publication period closed FUL/000607/26

13, Maes Gruffydd, Sychdyn, Mold, Flintshire, CH7 6LS

Vehicle access to the existing driveway on the front of the dwelling. Crossing to meet FCC Highways specification.

Full - Building Works Flintshire
31 Jul 2026 Consultation period opened FUL/000591/26

Hawthorn Cottage, Halkyn, Holywell, CH8 8JN

Proposed Ground Floor And First Floor Extension / Additional Dormer to the Front / Replace all Existing Render / New Double Garage / Remove Existing C...

Full - Building Works Flintshire
30 Jul 2026 Approved FUL/000657/26

Tamarisk, Bryntirion Road, Bagillt, CH6 6BZ

Proposed Level access drive with dropped kerbs & retaining walls with step lift. - disabled works

Full - Building Works Flintshire
30 Jul 2026 Publication period closed FUL/000655/26

Downing Cottage, Whitford, Holywell, CH8 9EQ

Erection of a replacement dwelling and detached garage, alterations to existing vehicular access and installation of solar panels and air source heat ...

Full - Building Works Flintshire
30 Jul 2026 Under Consideration FUL/000653/26

19 , The Brambles, Shotton, CH5 1PF

Single-storey part pitched roof and part flat roof extension to provide a fully accessible shower room. All work is under a Disabled Facilities Grant.

Full - Building Works Flintshire
29 Jul 2026 Approved FUL/000642/26

22, Ewloe Place, Buckley, CH7 3NL

Drop kerb to allow vehicle access to front garden.

Full - Building Works Flintshire
29 Jul 2026 Under Consideration FUL/000512/26

53, High Street, Connahs Quay, Deeside, CH5 4DD

Proposed internal and external alterations, along with change of use from A1 to A3.

Full - Building Works Flintshire
28 Jul 2026 Approved FUL/000633/26

4, East View, New Brighton, Mold, CH7 6RG

front extension and garage conversion for disabled bedroom and wetroom

Full - Building Works Flintshire
27 Jul 2026 Approved FUL/000643/26

50, The Boulevard, Broughton, Chester, CH4 0SW

Proposed 2 storey side extension with new side wall stepping in to follow boundary

Full - Building Works Flintshire
24 Jul 2026 Recommendation made LDP/000626/26

23 Wepre Park Connah's Quay Deeside CH5 4HJ

Construction of a single-storey side extension to the existing bungalow. The extension will be attached to the existing dwelling and constructed on ne...

Certificate of Lawfulness Sec 192 Flintshire
23 Jul 2026 Under Consideration LDP/000639/26

THE WOODS, Level Road, Hawarden, Deeside, CH5 3JR

Rear extension, garage conversion.

Certificate of Lawfulness Sec 192 Flintshire
21 Jul 2026 Approved LDP/000635/26

Wandandian, Bedford Way, Mold, Flintshire, CH7 1SL

Existing semi-detached dwelling - conversion of loft space to habitable rooms an

Certificate of Lawfulness Sec 192 Flintshire
21 Jul 2026 Consultation period opened CONS/000547/26

Tan Y Graig, Gwaenysgor, Rhyl, LL18 6EP

Proposed part removal of existing low level stone wall and erection of garage

Conservation area demolish unlisted building Flintshire
17 Jul 2026 Recommendation made FUL/000568/26

6, Tan Yr Ysgol, Soughton, Flintshire, CH7 6SR

Proposed single storey side extension

Full - Building Works Flintshire
15 Jul 2026 Approved FUL/000622/26

3, Fron Heulog, Ewloe, Deeside, CH5 3GG

Extension and alterations to garage to provide home office in roofspace

Full - Building Works Flintshire
15 Jul 2026 Consultation period opened FUL/000623/26

Cedarwood, Coed Ward, Pantymwyn, Mold, CH7 5HY

Proposed single storey rear extension, first floor side extension and garage refurbishment.

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

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