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Planning application

18 Oliver Road Horsham West Sussex RH12 1LH

Awaiting decision Horsham DC/26/1155 Householder

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Erection of a single storey ancillary residential annexe.

As published by the council, reference DC/26/1155

Application record

Reference
DC/26/1155
Type
Householder
Status
Registered
Received
20 Jul 2026
Validated
20 Jul 2026
Ward
Denne
Parish
Horsham TC
Decision by
Delegated Decision
Postcode
RH12 1LH

Timeline

Dates from the published record

  1. 20 Jul 2026

    Received by Horsham

  2. 4 Aug 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 14 September 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

RS Architectural Designs Agent, an architecture practice

4 applications on PlanIndex

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

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.

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Open the documents

What happens while it is decided

This application is with Horsham for determination, against a statutory target of eight weeks. Over the last year Horsham decided householder applications in a median of 56 days. More in our guide to how long planning decisions take.

About householder applications

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 23 Oliver Road Horsham West Sussex RH12 1LH

    DC/24/1754 Submitted 11 Nov 2024 100 yards away

    Prior Approval for the erection of a single storey rear larger home extension, which would project 5.00m from the rear elevation, comprising a maximum height of 3.501m and eaves height of 2.850m.

    Granted Prior approval Extension 8 docs
    Small domestic

  • 76 Worthing Road Horsham West Sussex RH12 1TD

    DISC/25/0269 Submitted 1 Sep 2025 150 yards away

    Approval of details reserved by condition 3 to approved application DC/23/0072.

    Granted Conditions 7 docs

  • 76 Worthing Road Horsham West Sussex RH12 1TD

    DC/23/0072 Submitted 13 Jan 2023 150 yards away

    Erection of a two-storey side and front extension. Conversion of loft to form habitable space, incorporating roof extensions, creation of dormers to side and rear and installation of rooflights. Fenestrations and associated external alterations to dwelling.

    Granted Householder Extension Loft or dormer 20 docs
    Domestic

  • Five Farthings Hengist Close Horsham West Sussex RH12 1SB

    DC/25/2166 Submitted 30 Dec 2025 250 yards away

    Erection of a front porch to the east elevation. Alterations to fenestration including the installation of sliding doors to the south elevation.

    Granted Householder Extension Windows or glazing 13 docs
    Small domestic

  • 99 Blackbridge Lane Horsham West Sussex RH12 1RU

    DC/26/0413 Submitted 5 Mar 2026 250 yards away

    77% historically approved · decision due ~30 Apr

    Erection of a detached two-bedroom dwelling with associated parking and access, following approval for dwelling under application reference DC/24/1557.

    Awaiting decision Full applications 12 docs
    Domestic

  • 35 Three Acres Horsham West Sussex RH12 1RS

    DC/26/0177 Submitted 2 Feb 2026 300 yards away

    94% historically approved · decision due ~30 Mar

    Non Material Amendment to previously approved application DC/25/1261 (Removal of rear bay window. Erection of a first floor extension and ground floor porch extension) to amend the approved external wall finishes.

    Awaiting decision Amendments Extension Windows or glazing 5 docs
    Small domestic

In Horsham

  • DC/26/1047 Granted

    Hammerhill House Hammerpond Road Plummers Plain Horsham West Sussex RH13 6PE

    Demolition of existing chalet. Erection of a replacement chalet and associated development.

    Received 30 Jun, published by the council 31 Jul 2026 Householder
  • DC/26/1032 Granted

    3 Oaklands Redford Avenue Horsham West Sussex RH12 2RD

    Demolition of existing conservatory and erection of a single storey rear extension. (Retrospective).

    Received 26 Jun, published by the council 31 Jul 2026 Householder
  • DC/26/1148 Granted

    20 Nelson Road Horsham West Sussex RH12 2JE

    Erection of single storey rear extension. Erection of rear dormer and installation of 2no front rooflights.

    Received 17 Jul, published by the council 31 Jul 2026 Householder
  • DC/26/1006 Granted

    1 Avebury Close Horsham West Sussex RH12 5JY

    Demolition of the existing rear conservatory and erection of a single storey rear extension. Part garage conversion into habitable living space. Installation of 2no. front dormers, 2no. rear rooflights and 4no. side rooflights. Alterations to fenestration.

    Received 22 Jun, published by the council 31 Jul 2026 Householder
  • DC/26/1113 Granted

    Whiteoaks Monkmead Lane West Chiltington West Sussex RH20 2NH

    Demolition of existing conservatory and erection of a two storey extension to northern elevation, conversion of garage into habitable living space, replacement of all windows, installation of new roof covering, installation of new rendering, extension and repositioning of the existing driveway with the erection of a new gated entrance.

    Received 13 Jul, published by the council 4 Aug 2026 Householder