20 Lilac Close, Guildford, GU1 1PB

1. 1 Oct 2025

   Received by Guildford

2. 25 Nov 2025

   Decision issued: Approve

3. 10 Aug 2026

   Added to PlanIndex

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.

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

• 12B Lilac Close, Guildford, GU1 1PB

  26/P/00367 Submitted 19 Mar 2026 0m away

  Certificate of lawfulness for a proposed development to establish whether the conversion of loft space to habitable accommodation with roof lights together with addition of flat roof and side windows would be lawful.

  Refused Lawful development Loft or dormer Windows or glazing 15 docs

• 20 Lilac Close, Guildford, GU1 1PB

  21/W/00081 Submitted 14 Jun 2021 0m away

  Prior notification for a single storey 4.00 metre extension, 4.00 metres in height with an eaves height of 3.00 metres.

  Granted Extension 16 docs
  Small domestic

• 20 Lilac Close, Guildford, GU1 1PB

  19/N/00133 Submitted 28 Nov 2019 0m away

  Non-material amendment to planning application number 19/P/00749 approved 06/09/2019 to remove the false chimney from the roof of the approved dwelling.

  Refused Amendments 8 docs
  Domestic

• 20 Lilac Close, Guildford, GU1 1PB

  19/D/00173 Submitted 25 Oct 2019 0m away

  Discharge of condition 6,7 and 8 of 19/P/00749 approved 06/09/2019

  Granted Conditions 7 docs

• 131 Yew Tree Drive, Guildford, GU1 1NZ

  26/P/00676 Submitted 19 May 2026 79m away

  86% historically approved · decision due ~28 Jul

  Certificate of lawfulness for proposed development to establish whether a loft Conversion with re...

  Decided Loft or dormer

• 98 Yew Tree Drive, Guildford, GU1 1NZ

  26/P/00630 Submitted 11 May 2026 79m away

  86% historically approved · decision due ~27 Jul

  Application for a vehicular hard-standing, with crossover to the highway together with conversion...

  Awaiting decision

• 26/P/01161 Awaiting decision

  The Bungalow, Long Reach, Ockham, Woking, GU23 6PG

  Certificate of lawfulness for a proposed development to establish whether the erection of two side extensions and a loft conversion including rear dormer and three front rooflights would be lawful.

  27 Aug 2026 Lawful development
• 26/P/00423 Granted

  Misty Hill, Catteshall Lane, Unsted, Godalming, GU7 1UP

  Certificate of Lawfulness for existing use to establish whether the use began more than 10 years before the date of this application.The building works (for instance, building or engineering works) were substantially completed more than four years before the date of this application and the change of use to use as a single dwelling house began more than four years before the date of this application is lawful.

  31 Mar 2026 Lawful development
• 26/P/00808 Refused

  Sandy Farm Business Centre, Sands Road, Seale, Farnham, GU10 1PX

  Certificate of lawfulness for proposed development to establish whether the erection of a storage building would be lawful.

  11 Jun 2026 Lawful development
• 26/P/00792 Granted

  53 Woodbridge Road, Guildford, GU1 4RF

  Certificate of lawfulness for a proposed development to establish whether the loft conversion to habitable accommodation with insertion of 5 rooflights is lawful.

  10 Jun 2026 Lawful development
• 26/P/00441 Refused

  26 Harvey Road, Guildford, GU1 3SE

  Certificate of lawfulness for a proposed development to establish whether the formation of a permeable hardstanding within the front curtilage, minor regrading of existing ground levels to accommodate the natural slope of the site and improve visibility, installation of a permeable sub-base and surface treatment to allow for the infiltration of surface water within the site, alteration to the existing boundary treatment (limited to the formation of an opening to facilitate access) and associated edge treatments would be lawful.

  7 Apr 2026 Lawful development