House extensions in East Hertfordshire

East Hertfordshire received 727 householder applications in the last 12 months - about 14 a week. Rear extensions and garage works are the most common. Of the 495 decided so far, 414 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 217 applications
2 days ago Awaiting decision 3/26/1177/HH

11 Rochford Road Bishops Stortford Hertfordshire CM23 5ET

Demolition of rear extension and erection of single storey rear extension with roof lantern

Householder East Hertfordshire
2 days ago Awaiting decision 3/26/1192/HH

Monttaber Bragbury Lane Datchworth Hertfordshire SG3 6QZ

Demolition of garage, side and rear brick structure, raising of roof and roof alterations to provide additional accommodation to first floor, erection...

Householder East Hertfordshire
8 Sept 2026 Awaiting decision 3/26/1260/PNHH

Gelders Conduit Lane Great Hormead Hertfordshire SG9 0NU

Prior approval application for the demolition of an outbuilding and construction of single storey side and rear extensions: depth 8.00 metres, height ...

Prior Notification Householder East Hertfordshire
7 Sept 2026 Awaiting decision 3/26/0987/HH

Eastview 29 New Path Bishops Stortford Hertfordshire CM23 3TX

Installation of external wall insulation with rendered finish, alteration to the colour of the front entrance door, construction of a mono-pitched rea...

Householder East Hertfordshire
7 Sept 2026 Awaiting decision 3/26/0993/HH

40 Mayflower Gardens Bishops Stortford Hertfordshire CM23 4PA

Removal of existing conservatory and dormer window. Erection of a single storey rear extension, part two-storey, part first floor side and rear extens...

Householder East Hertfordshire
7 Sept 2026 Awaiting decision 3/26/1034/FUL

Herts And Essex High School Warwick Road Bishops Stortford Hertfordshire CM23 5NJ

Installation of perimeter fencing with pedestrian gates, manual and automated vehicular gates

Full Application East Hertfordshire
4 Sept 2026 Awaiting decision 3/26/1168/HH

43 Benington Road Aston Hertfordshire SG2 7DY

Demolition of existing greenhouse and construction of new greenhouse

Householder East Hertfordshire
4 Sept 2026 Awaiting decision 3/26/1160/HH

74 Whempstead Road Benington Hertfordshire SG2 7DE

Erection of a detached garage with associated alterations to existing retaining wall

Householder East Hertfordshire
3 Sept 2026 Awaiting decision 3/26/1155/HH

23 Post Wood Road Ware Hertfordshire SG12 9NJ

Single-storey rear extension with infill side extension, loft extension with rear dormers with flat and pitched roofs, outdoor kitchen structure, incl...

Householder East Hertfordshire
3 Sept 2026 Awaiting decision 3/26/1092/HH

5 Duncombe Close Hertford Hertfordshire SG14 3DB

Construction of dormer to west side of the house (Retrospective)

Householder East Hertfordshire
3 Sept 2026 Awaiting decision 3/26/1127/HH

22 Widbury Gardens Ware Hertfordshire SG12 7AT

Construction of single-storey rear extension with alterations to fenestration

Householder East Hertfordshire
2 Sept 2026 Awaiting decision 3/26/1137/HH

Bourne House Cambridge Road Wadesmill Hertfordshire SG12 0TT

Part-retrospective construction of a two-storey side extension, ground floor infill extension, external steps, balustrade, alterations to fenestration...

Householder East Hertfordshire
2 Sept 2026 Awaiting decision 3/26/1233/PNHH

152 Cannons Close Bishops Stortford Hertfordshire CM23 2BL

Notification of proposed single storey rear extension with flat roof: Depth 4.00 metres, Height 3.00 metres, Eaves height 3.00

Prior Notification Householder East Hertfordshire
1 Sept 2026 Awaiting decision 3/26/0911/HH

28 Pishiobury Drive Sawbridgeworth Hertfordshire CM21 0AE

Erection of part single-storey, part two-storey rear extension and part first-floor side extension; alterations to existing roof including insertion o...

Householder East Hertfordshire
1 Sept 2026 Awaiting decision 3/26/1164/HH

130 Stortford Hall Park Bishops Stortford Hertfordshire CM23 5AP

Conversion of garage to habitable room

Householder East Hertfordshire
31 Aug 2026 Awaiting decision 3/26/1211/ASDPN

Poplars Spellbrook Lane West Spellbrook Hertfordshire CM23 4AY

Prior approval application for the erection of an additional storey to the existing dwelling, to increase the height from 5.93 metres to 8.52 metres, ...

Additional Storeys on a Dwelling PN East Hertfordshire
28 Aug 2026 Awaiting decision 3/26/1202/HH

40 Cowper Crescent Hertford Hertfordshire SG14 3DZ

Single storey rear extension and garage conversion into habitable space

Householder East Hertfordshire
28 Aug 2026 Awaiting decision 3/26/1206/PNHH

Poplars Spellbrook Lane West Spellbrook Hertfordshire CM23 4AY

Notification of proposed demolition of outbuildings and conservatory to rear, erection of single storey rear extension: Depth 8.00 metres, Height 3.35...

Prior Notification Householder East Hertfordshire
27 Aug 2026 Awaiting decision 3/26/1195/HH

45 Cromwell Road Hertford Hertfordshire SG13 7DP

Single storey rear extension following the removal of the conservatory

Householder East Hertfordshire
27 Aug 2026 Awaiting decision 3/26/1142/HH

69 Queens Road Hertford Hertfordshire SG13 8BB

Installation of flat roof with roof lantern to replace existing conservatory roof and extending existing terraces.

Householder East Hertfordshire
27 Aug 2026 Awaiting decision 3/26/0820/HH

14 Danesbury Park Hertford Hertfordshire SG14 3HX

Single storey side extension with rooflight, attic extension and erection of rear dormer, removal of brick wall for new decking, removal of chimney, a...

Householder East Hertfordshire
27 Aug 2026 Awaiting decision 3/26/1139/HH

60 Port Vale Hertford Hertfordshire SG14 3AF

Demolition of rear extension, erection of single storey rear extension, part side extension and new garden retaining wall to form patio

Householder East Hertfordshire
27 Aug 2026 Awaiting decision 3/26/1150/HH

46 Church Road Little Berkhamsted Hertfordshire SG13 8LY

Demolition of rear extension and erection of single storey rear extension, relocation of solar panels, installation of rear roof light and new boiler ...

Householder East Hertfordshire
26 Aug 2026 Awaiting decision 3/26/1093/HH

Magna House Widford Road Much Hadham Hertfordshire SG10 6AT

Proposed single storey rear car port and garden store extension

Householder East Hertfordshire
26 Aug 2026 Awaiting decision 3/26/1120/HH

6 Highfield Road Hertford Hertfordshire SG13 8BH

Loft conversion with rear dormer and roof lights to front, rear and side elevations

Householder East Hertfordshire
26 Aug 2026 Awaiting decision 3/26/1121/HH

6 Highfield Road Hertford Hertfordshire SG13 8BH

Construction of a single-storey rear extension with a flat roof and roof light

Householder East Hertfordshire
26 Aug 2026 Awaiting decision 3/26/1191/PNHH

4 Boundary Road Bishops Stortford Hertfordshire CM23 5LE

Notification of erection of proposed single storey rear extension with installation of log burner chimney: Depth 4.00 metres, Height 3.90 metres, Eave...

East Hertfordshire
25 Aug 2026 Awaiting decision 3/26/1101/FUL

Park Cottage Robins Nest Hill Little Berkhamsted Hertfordshire SG13 8LL

Installation of vehicular entrance onto public highway, new driveway, bin store, gates and walls (Part retrospective).

Full Application East Hertfordshire
24 Aug 2026 Awaiting decision 3/26/1025/HH

19 Phoenix Drive Bishops Stortford Hertfordshire CM23 2UJ

Replacement, relocation and extension of boundary fence

Householder East Hertfordshire
24 Aug 2026 Awaiting decision 3/26/1122/HH

14 Watermill Lane Hertford Hertfordshire SG14 3LB

Demolition of rear conservatory with erection of a single-storey rear extension, front porch, garage conversion, new windows and door, and alterations...

Householder East Hertfordshire
24 Aug 2026 Awaiting decision 3/26/0999/HH

Millfield High Wych Road High Wych Hertfordshire CM21 0HX

Porch to front elevation

Householder East Hertfordshire
24 Aug 2026 Awaiting decision 3/26/1108/HH

16 Baldock Road Buntingford Hertfordshire SG9 9DA

Demolition of existing garage with erection of two-storey front and single-storey rear extensions and alterations to fenestration

Householder East Hertfordshire
21 Aug 2026 Awaiting decision 3/26/1175/HH

High Hall Farm Mill Lane Anstey Hertfordshire SG9 0BL

Conversion of outbuilding to create an ancillary bedroom, home office and a gym/play room

Householder East Hertfordshire
21 Aug 2026 Awaiting decision 3/26/1173/LBC

12 Hadham Road Bishops Stortford Hertfordshire CM23 2QR

Internal repair and reinstatement works following water damage, including localised removal and replacement of damaged lime plaster, repairs to firepl...

Listed Building Consent East Hertfordshire
21 Aug 2026 Awaiting decision 3/26/1053/HH

6 Stort Lodge Bishops Stortford Hertfordshire CM23 2QL

Single storey rear extension, garage conversion into habitable space with single storey front extension, canopy over the new front door, cladding to r...

Householder East Hertfordshire
21 Aug 2026 Withdrawn 3/26/1056/HH

4 Vicarage Close Bishops Stortford Hertfordshire CM23 3SX

Erection of single storey rear extension with alterations to fenestration and removal of the garden shed

Householder East Hertfordshire
20 Aug 2026 Awaiting decision 3/26/1165/CLPO

30 Peel Crescent Hertford Hertfordshire SG14 3EE

Alterations to fenestration to side and rear elevations, sun tunnel to front elevation, removal of chimney stack and removal of rear projection to gar...

CL Proposed Operations East Hertfordshire
20 Aug 2026 Awaiting decision 3/26/1038/HH

22 Greenhills Ware Hertfordshire SG12 0XG

Erection of front porch, with alterations to fenestration, cladding and rendering

Householder East Hertfordshire
20 Aug 2026 Awaiting decision 3/26/1072/HH

59 Nutcroft Datchworth Hertfordshire SG3 6TQ

Construction of two storey side and rear extension

Householder East Hertfordshire
20 Aug 2026 Awaiting decision 3/26/1075/HH

4 Peel Crescent Hertford Hertfordshire SG14 3EE

Construction of front, rear and side extensions, loft conversion and rear dormer

Householder East Hertfordshire
20 Aug 2026 Awaiting decision 3/26/1110/HH

Tylers Cottage 5 West End Road Wormley West End Broxbourne Hertfordshire EN10 7QN

Creation of first floor doors, erection of a rear balcony, and external horizontal board cladding to the north and west elevations

Householder East Hertfordshire
20 Aug 2026 Awaiting decision 3/26/1107/FUL

5 Parliament Square Hertford Hertfordshire SG14 1EX

Installation of new retractable awning and two patio bar heaters to front elevation (Part Retrospective)

Full Application East Hertfordshire
20 Aug 2026 Awaiting decision 3/26/1070/HH

31 Larksway Bishops Stortford Hertfordshire CM23 4DG

Replacement of roof and frames to existing conservatory

East Hertfordshire
20 Aug 2026 Awaiting decision 3/26/1091/FUL

Quaker Burial Ground Port Hill Hertford Hertfordshire

Change of use of land from burial ground to residential; construction of 1 x 3 bedroom self build and custom build dwelling with EV charging point, bi...

Full Application East Hertfordshire
19 Aug 2026 Awaiting decision 3/26/1171/CLPO

13 Horrocks Close Ware Hertfordshire SG12 0QL

Loft conversion with rear dormer and three roof lights to front

CL Proposed Operations East Hertfordshire
19 Aug 2026 Awaiting decision 3/26/1083/HH

Hope Cottage 15 Grasmere Road Ware Hertfordshire SG12 7NP

Construction of single storey rear extension

Householder East Hertfordshire
19 Aug 2026 Awaiting decision 3/26/1063/HH

Lakeview Ermine Street Colliers End Hertfordshire SG11 1ER

Part single storey, part double storey rear extension with rear facing terrace. Double storey front infill extension. Alterations to fenestration, and...

Householder East Hertfordshire
19 Aug 2026 Awaiting decision 3/26/1039/FUL

Mayflower Place Hertingfordbury Road Hertford Hertfordshire SG14 2LG

Erection of rear orangery garden room

East Hertfordshire
19 Aug 2026 Awaiting decision 3/26/1040/LBC

Mayflower Place Hertingfordbury Road Hertford Hertfordshire SG14 2LG

Erection of rear orangery garden room

Listed Building Consent East Hertfordshire
19 Aug 2026 Awaiting decision 3/26/1102/HH

75 Apton Road Bishops Stortford Hertfordshire CM23 3ST

Single storey rear extension, replacement of rear lean-to roof, repair of chimney and fascia to front elevation, rendering of rear elevation, installa...

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

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