1 Grange Gardens Main Street Grendon Underwood Buckinghamshire HP18 0UD

1. 8 Dec 2025

   Received by Buckinghamshire

2. 26 Mar 2026

   Decision issued: Approved

3. 27 Jul 2026

   Added to PlanIndex

Buckinghamshire granted permission on 26 March 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 1 The Chestnuts Main Street Grendon Underwood Buckinghamshire HP18 0UH

  PL/26/06602/KA Submitted 1 Sep 2026 150 yards away

  86% historically approved · decision due ~27 Oct

  Crown reduction to 4 meters to 1 x Silver Birch (T2) and 1 x Magnolia (T3) as the trees are close to the house and garage and are looking to prevent any damage

  Awaiting decision Trees

• The Manor Main Street Grendon Underwood Buckinghamshire HP18 0SW

  PL/25/5318/FA Submitted 17 Dec 2025 150 yards away

  Internal and external alterations to existing outbuilding comprising replacement windows, removal of 1 no. existing front dormer and installation of 3 no. front dormers and repairs to roof with replacement roof tiles.

  Granted Full applications Loft or dormer Roofing +1 5 docs

• 9 Darleys Close Grendon Underwood Buckinghamshire HP18 0SE

  PL/26/06583/FA Submitted 2 Sep 2026 250 yards away

  86% historically approved · decision due ~28 Oct

  Householder application for the construction of a single storey rear extension (to replace existing conservatory), porch to front including new roof over existing bay window and ancillary building to front (to replace existing garage).

  Awaiting decision Extension Roofing +1
  Small domestic

• Studley House Main Street Grendon Underwood Buckinghamshire HP18 0SL

  PL/26/00381/VRC Submitted 11 Feb 2026 400 yards away

  Variation of conditions 2 (plans) and 3 (external materials) of planning permission 23/02831/APP (Householder application for glass room to rear) to allow for a change of material of the rear door from wooden to black aluminium and a change in roof pitch.

  Granted Conditions 4 docs
  Domestic

• Beechcroft 1 Rickyard Grove Grendon Underwood Buckinghamshire HP18 0SF

  PL/25/5952/FA Submitted 27 Nov 2025 0.3 miles away

  Single storey rear and 2nd storey side extensions and front porch canopy

  Granted Full applications Extension 21 docs
  Small domestic

• PL/25/6180/FA Granted

  Midsummer Lodge Heath End Road Great Kingshill Buckinghamshire HP16 0EB

  Redevelopment of site to provide a detached dwelling served by an existing access

  Received 5 Dec, published by the council 27 Jul 2026 Full applications
• PL/26/00049/FA Refused

  Astraea Alderbourne Lane Fulmer Buckinghamshire SL0 0NS

  Front porch canopy extension, first-floor side extensions, single storey rear extension and roof alterations to facilitate loft conversion into habitable accommodation incorporating increase to ridge height, side rooflights and rear dormer.

  Received 5 Jan, published by the council 27 Jul 2026 Full applications
• PL/26/00005/FA Granted

  54 Crown Road Marlow Buckinghamshire SL7 2QG

  Minor works for installation of patio doors at ground floor and windows at ground floor and first floor

  Received 25 Jan, published by the council 27 Jul 2026 Full applications
• PL/25/5807/FA Granted

  108 West Wycombe Road High Wycombe Buckinghamshire HP12 3AA

  Construction of single storey detached dwelling comprising 6 HMO rooms, alterations to parking area, new bin and cycle stores

  Received 16 Jan, published by the council 27 Jul 2026 Full applications
• PL/26/06617/FA Awaiting decision

  Fairacre Lodge Chiltern Road Ballinger Buckinghamshire HP16 9LJ

  Demolition of existing dwelling and construction of two dwellings

  Received 28 Aug, published by the council 14 Sep 2026 Full applications