17 Cavendish Close Horsham West Sussex RH12 5HX

1. 17 Aug 2026

   Received by Horsham

2. 8 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 12 October 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.

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.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 17 Cavendish Close Horsham West Sussex RH12 5HX

  DC/26/0995 Submitted 19 Jun 2026 0m away

  92% historically approved · decision due ~14 Aug

  Demolition of existing garage and erection of new garage (Lawful Development Certificate - Proposed).

  Awaiting decision Lawful development Demolition 4 docs

• 1A Cavendish Close Horsham West Sussex RH12 5HX

  DC/26/0547 Submitted 30 Mar 2026 57m away

  92% historically approved · decision due ~8 Jun

  Conversion of integral garage into habitable living space (Lawful Development Certificate - Proposed).

  Awaiting decision Lawful development 8 docs

• 13 Cavendish Close Horsham West Sussex RH12 5HX

  DC/23/0157 Submitted 30 Jan 2023 100m away

  Erection of a single storey side porch extension.

  Granted Householder Extension 13 docs
  Small domestic

• 3 Cavendish Close Horsham West Sussex RH12 5HX

  DC/26/1357 Submitted 24 Aug 2026 108m away

  98% historically approved · decision due ~19 Oct

  Surgery to 1 x Oak

  Awaiting decision Trees 7 docs

• 15 Wagtail Close Horsham West Sussex RH12 5HL

  DC/26/0193 Submitted 3 Feb 2026 139m away

  Surgery to 1x Oak.

  Granted Trees 6 docs

• 34 Wagtail Close Horsham West Sussex RH12 5HL

  DC/05/1740 Submitted 15 Jul 2005 163m away

  Single-storey rear extension

  Granted Full applications Extension
  Small domestic

• DC/26/1062 Granted

  Hayes Farm, Unit 3 Gay Street Pulborough West Sussex RH20 2HL

  Use of premises (Unit 3) as a light-industrial workshop for the purpose of joinery construction (Lawful Development Certificate - Existing).

  3 Jul 2026 Lawful development
• DC/26/1028 Granted

  17 Purton Road Horsham West Sussex RH12 2HB

  Erection of a single storey rear infill extension (Lawful Development Certificate - Proposed).

  25 Jun 2026 Lawful development
• DC/26/1300 Awaiting decision

  6 Faithfull Crescent Storrington West Sussex RH20 4QY

  Demolition of existing conservatory and erection of a single storey rear extension. (Lawful Development Certificate - Proposed).

  13 Aug 2026 Lawful development
• DC/26/1265 Awaiting decision

  Malthouse Cottage Farm Malthouse Lane Ashington West Sussex RH20 3BU

  Use of land forming part of the domestic curtilage of Malthouse Cottage Farm for the stationing of a mobile home to provide an ancillary annex to the house (Lawful Development Certificate - Proposed)

  7 Aug 2026 Lawful development
• DC/26/1271 Awaiting decision

  Waterside Five Oaks Road Slinfold West Sussex RH13 0RL

  Formation of hardstanding on a date four years previous (Lawful Development Certificate - Existing).

  7 Aug 2026 Lawful development