Planning application
21 Timber Mill Southwater West Sussex RH13 9SX
Works: Extension Small domestic
Read from the description, not a valuation. How we read the register
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Prior Approval for the erection of a single-storey rear larger home extension, which would project 5.10m from the rear elevation, comprising a maximum height of 3.50m and an eaves height of 2.40m
As published by the council, reference DC/26/0958
Application record
- Reference
- DC/26/0958
- Type
- Gen Permitted Development - Householder
- Status
- Registered
- Received
- 15 Jun 2026
- Validated
- 15 Jun 2026
- Ward
- Southwater South and Shipley
- Parish
- Southwater PC
- Decision by
- Delegated Decision
- Postcode
- RH13 9SX
Timeline
Dates from the published record
-
15 Jun 2026
Received by Horsham
-
12 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 10 August 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Horsham took a median of 56 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
Agent on file, a planning consultancy
24 applications on PlanIndex · across 5 councils · 94% granted
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
7 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 happens while it is decided
The process from here
This application is with Horsham for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
About prior approval applications
How this application type works
Prior approval applications arise where permitted development rights already grant the principle of the work, such as larger home extensions, changes of use to housing or agricultural buildings. The council may only consider the specific matters set out in the rules, for example transport, flooding or appearance, and in many classes the work may proceed if the council does not respond within the deadline, commonly 56 days.
Nearby applications
Within 500 metres
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Awaiting decision Conditions 4 docs -
38A Quarry Way Southwater Horsham West Sussex RH13 9SU
94% historically approved · decision due ~15 Sep
Removal of Conditions 4, 5 and 6 of previously approved application DC/25/1007 (Variation of Condition 1 of previously approved application DC/24/0289 (Demolition of outbuildings and construction of a new detached double storey dwelling (Class C3)) for re-siting of dwelling) relating to Water Neutrality.
Awaiting decision Amendments Demolition 4 docsDomestic -
15 Quarry Way Southwater West Sussex RH13 9ST
94% historically approved · decision due ~3 Nov
Non Material Amendment to previously approved application DC/25/0041 (Erection of a single storey rear extension, single storey porch extension, conversion of garage into habitable living space and alterations to fenestration) Amendments to the rear extension.
Awaiting decision Amendments Extension Windows or glazing 17 docsSmall domestic -
11 The Forge Southwater West Sussex RH13 9HB
Erection of a first-floor extension above existing garage, single-storey side extension, and alterations to fenestration.
Granted Householder Extension Windows or glazing 18 docsSmall domestic -
Land At 515666 126464 Quarry Way Southwater West Sussex RH13 9ST
94% historically approved · decision due ~25 May
Removal of Condition 7 of previously approved application DC/22/1538 (Erection of 1no. 3-bed detached dwellinghouse with a single garage and additional off road car parking space) relating to water neutrality.
Awaiting decision Amendments 3 docsDomestic -
Holly House Worthing Road Southwater West Sussex RH13 9DT
98% historically approved · decision due ~1 May
Application for Approval of Details Reserved by Conditions 3, 4 and 5 to approved application DC/23/1307
Awaiting decision Conditions 8 docs
Other prior approval applications
In Horsham
-
DC/26/1379 Awaiting decision
14 Millthorpe Road Horsham West Sussex RH12 4EP
Prior Approval for the erection of a single storey rear larger home extension, which would project 3.50m from the rear elevation, comprising a maximum height of 4.00m and an eaves height of 3.00m.
-
DC/26/1364 Awaiting decision
New House Farm Broadwater Lane Copsale West Sussex RH13 6QW
Prior Notification for the Change of Use of 2no. buildings together with associated operational development to residential use (C3) to provide 7no. dwellings.
-
DC/26/1347 Awaiting decision
Orchard Cottage Emms Lane Brooks Green Horsham West Sussex RH13 0TR
Prior notification for the erection of an agricultural building.
-
DC/26/1345 Awaiting decision
Princes Barn Adversane Lane Broadford Bridge West Sussex
Prior notification for the erection of an agricultural shed for the storage of equipment and machinery.
-
DC/26/1339 Awaiting decision
Bowshot Barn Cowfold Road West Grinstead West Sussex RH13 8LY
Prior notification for the demolition of existing 5 stall stable buildings and erection of a single storey stable building with 15 stalls for horses, ancillary space for the grooming, care and breeding of horses and a horse walker enclosure and a sand path between existing and new buildings.