Planning application
12 Forest Mews Horsham West Sussex RH12 4GG
Works: Extension Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Erection of a single storey rear extension and associated landscaping.
As published by the council, reference DC/26/0318
Application record
- Reference
- DC/26/0318
- Type
- Householder
- Status
- Decided
- Decision
- Application Permitted
- Received
- 23 Feb 2026
- Validated
- 6 Mar 2026
- Decided
- 28 Apr 2026
- Ward
- Roffey South
- Parish
- North Horsham PC
- Decision by
- Delegated Decision
- Postcode
- RH12 4GG
Timeline
Dates from the published record
-
23 Feb 2026
Received by Horsham
-
6 Mar 2026
Validated
Checked as complete and ready for consideration.
-
28 Apr 2026
Decision issued: Application Permitted
-
12 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Agent on file, an architecture practice
4 applications on PlanIndex · across 3 councils
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
19 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Trade members open them from here.
Open the documentsWhat a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About householder applications
How this application type works
Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.
Nearby applications
Within 500 metres
-
Holly End Holly Close Horsham West Sussex RH12 4PA
99% historically approved · decision due ~21 Sep
Surgery to 1x Oak and 4x Beech
Awaiting decision Trees 3 docs -
-
Grass Verge of B2195 Crawley Road Horsham RH12 4HG
Prior approval for the proposed telecommunications installation of a slimline 16m monopole and associated equipment cabinets
Granted Prior approval 29 docs -
Land at Crawley Road Horsham West Sussex
Proposed new 1No 1230mm whip antenna & 1No 82mm GSM node & 1No GPS node (to be installed on 1No new offset bracket arm) & 1No small ancillary modem box, all installed circa 6m below the top of the column & proposed new 1No 800mm(W)x400mm(D)x1000mm(H) Meter Cabinet adjacent to existing cabinets.
Granted Telecoms 4 docs -
245 Crawley Road Horsham West Sussex RH12 4HF
98% historically approved · decision due ~10 Jun
Erection of a part single-storey, part two-storey extension.
Awaiting decision Householder Extension 8 docsSmall domestic -
Other householder applications
In Horsham
-
DC/26/1091 Granted
3 The Old Sussex Stud, The Hayloft Cowfold Road West Grinstead West Sussex RH13 8JP
Installation of freestanding solid fuel appliance to interior ground floor and erection of external insulated twin-wall flue to roof (Householder).
-
DC/26/1085 Granted
Harlequin House Hurston Lane Storrington West Sussex RH20 4HH
Erection of single storey rear extension and first floor side extension. Installation of tile hanging to existing first floor front elevation.
-
DC/26/1029 Granted
Fern Lodge Stane Street Codmore Hill West Sussex RH20 1BL
Erection of a single storey side extension to dwelling. Erection of a raised roof with dormer, installation of new windows, doors, garage door, and solar PV panels to outbuilding, with reconfiguration of internal layout.
-
DC/26/1078 Granted
2 Fairlight Cottages Natts Lane Billingshurst West Sussex RH14 9EY
Conversion of existing garage into habitable area including the replacement of the garage door with a window and installation of bi-fold doors and rooflights to the side elevation.
-
DC/26/1157 Granted
8 Blanches Road Partridge Green Horsham West Sussex RH13 8HZ
Demolition of existing rear conservatory and erection of single storey rear extension with shallow pitched roof