Planning application
17 Laggan Square Maidenhead SL6 7LA
Works: Extension Loft or dormer Demolition Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Certificate of lawfulness to determine whether the proposed single storey side extension, 3no. front rooflights, 1no. rear dormer and hip to gable following the demolition of the existing detached garage and outbuilding is lawful.
As published by the council, reference 26/00714/CPD
Application record
- Reference
- 26/00714/CPD
- Type
- Cert of Lawfulness of Proposed Dev
- Status
- Decided
- Decision
- Permitted Development
- Received
- 19 Mar 2026
- Validated
- 19 Mar 2026
- Decided
- 2 Apr 2026
- Ward
- Riverside
- Parish
- Maidenhead Unparished
- Decision by
- Delegated
- Postcode
- SL6 7LA
Site history
Applications at this address on the Windsor and Maidenhead register
This site has had 3 applications since 2026: 3 approved, 0 refused.
-
26/01689/FULL Granted
17 Laggan Square Maidenhead SL6 7LA
2no. front canopies, 3no. front rooflights, part single part two storey side/rear extension, hip to gable, 1no. loft conversion with 1no. rear dormer and 1no. detached outbuilding ancillary to the main dwelling following the demolition of the existing elements.
-
26/00704/PDXL Granted
17 Laggan Square Maidenhead SL6 7LA
Single storey rear extension no greater than 6.00m in depth, 4.00m high with an eaves height of 3.00m.
Timeline
Dates from the published record
-
19 Mar 2026
Received by Windsor and Maidenhead
-
2 Apr 2026
Decision issued: Permitted Development
-
25 Jul 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
10 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 this grant of permission means
Windsor and Maidenhead granted permission on 2 April 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.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
17 Laggan Square Maidenhead SL6 7LA
Single storey rear extension no greater than 6.00m in depth, 4.00m high with an eaves height of 3.00m.
Granted Prior approval Extension 12 docsSmall domestic -
17 Laggan Square Maidenhead SL6 7LA
2no. front canopies, 3no. front rooflights, part single part two storey side/rear extension, hip to gable, 1no. loft conversion with 1no. rear dormer and 1no. detached outbuilding ancillary to the main dwelling following the demolition of the existing elements.
Granted Full applications Extension Loft or dormer +1 16 docsSmall domestic -
15 Laggan Square Maidenhead SL6 7LA
Certificate of lawfulness to determine whether the proposed detached outbuilding to be used as an office ancillary to the main dwelling is lawful.
Granted Lawful development 6 docsSmall domestic -
9 Laggan Square Maidenhead SL6 7LA
Part single part two storey side/rear extension, garage conversion, part hip to gable, 2no. rooflights and 1no. rear dormer following demolition of existing element.
Granted Full applications Extension Loft or dormer +1 9 docs -
20 Laggan Square Maidenhead SL6 7LA
Certificate of lawfulness to determine whether the single storey rear extension, hip to gable, 3no. front rooflights and loft conversion to include 1no. rear dormer is lawful.
Granted Lawful development Extension Loft or dormer 14 docsSmall domestic -
18 Moorside Close Maidenhead SL6 7HW
Single storey front extension, 1no. rear dormer to accommodate a loft conversion and alterations to fenestration.
Granted Full applications Extension Loft or dormer +1 4 docsSmall domestic
Other lawful development applications
In Windsor and Maidenhead
-
26/01743/CPD Refused
1 Aston Mead Windsor SL4 5PW
Certificate of lawfulness to determine whether the proposed replacement single storey rear extension is lawful.
-
26/01828/CPU Granted
Concorde Park Concorde Road Maidenhead SL6 4FJ
Certificate of lawfulness to determine whether a private hire operators licence for taxi services is lawful.
-
26/01853/CPU Granted
20 Craufurd Rise Maidenhead SL6 7LS
Certificate of lawfulness to determine whether the proposed use of a room on the ground floor as private hire operators licence is lawful.
-
26/01781/CPD Refused
163 Arthur Road Windsor SL4 1RZ
Certificate of lawfulness to determine whether the proposed rear L shaped dormer with Juliet balcony and new air source heat pump are lawful.
-
26/01553/CLU Granted
64 Priors Way Maidenhead SL6 2EN
Certificate of lawfulness to determine whether the existing use of building as self-contained residential dwelling as per details set out in Statutory Declaration is lawful.