Planning application
26/00583/CLP
10 Treelawn Drive Leigh-on-sea Essex SS9 4AQ
Proposal
Install air conditioner unit to front elevation
As published by the council, reference 26/00583/CLP
Timeline
Dates from the published record
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28 Apr 2026
Received by Southend-on-Sea
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26 May 2026
Validated
Checked as complete and ready for consideration.
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6 Jul 2026
Decision issued: Refuse Lawful Development Certificate
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23 Jul 2026
Added to PlanIndex
What refusal means
The process from here
The council refused this application for the reasons set out on the decision notice, which the council portal holds in full. Only the applicant can appeal a refusal; the time limit runs from the decision date and is shorter for householder schemes.
Refusal does not prevent a fresh attempt. Applicants often address the reasons for refusal and resubmit, so a refused scheme is not necessarily the end of proposals for the site.
About lawful development applications
How this application type works
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.
Nearby applications
Within 500 metres
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26/00887/FULH Status unknown
10 Treelawn Drive Leigh-on-sea Essex SS9 4AQ
Install one air conditioning unit to front elevation with associated pipework and electrical connections (Retrospective)
-
21/01135/FULH Granted
17 Treelawn Gardens Leigh-on-sea Leigh-On-Sea Essex SS9 4AH
Install balcony to rear over existing single storey rear extension, alter elevations
-
24/01411/FULH Granted
5 Blenheim Park Close Leigh-on-sea Essex SS9 4AR
Erect single storey rear extension with rooflight
-
21/01133/FULH Granted
1 Highwood Close Leigh-on-sea Leigh-On-Sea Essex SS9 4AS
Erect car port to front and install solar panels to roof
-
21/01242/FULH Refused
31 Avondale Drive Leigh-on-sea Leigh-On-Sea Essex SS9 4HN
Erect single storey rear extension
-
26/00782/AD Status unknown
4 Elms Court Westcliff-on-sea Essex SS0 0BF
Application for Approval of Details pursuant to condition 05 (Demolition and Construction Management Plan) of planning permission of 26/00336/FULH dated 19.05.26
Other lawful development applications
In Southend-on-Sea
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26/00841/CLP Granted
52 Bellhouse Road Eastwood Leigh-On-Sea Essex SS9 5NL
Install rear dormer to create habitable accommodation in the loftspace and alter side elevation (Lawful Development Certifcate - Proposed)
-
26/00818/CLP Granted
20 Carlton Drive Leigh-on-sea Essex SS9 1DE
Dormers to sides and juliette balcony to rear to form habitable accommodation in loftspace (certificate of lawful development - proposed)
-
26/00741/CLE Granted
57 - 59 Elm Road Leigh-on-sea Essex SS9 1SP
Confirmation that planning permission 16/01572/FUL as varied by 18/01443/AMDT has been lawfully implemented (Certificate of Lawful Development - Existing)
-
26/00746/CLP Granted
21 Shanklin Drive Westcliff-on-sea Essex SS0 9XU
Removal of chimney stack on rear roof slope, erect dormer to rear to create habitable accommodation in roof space, two rooflights to front roof slope, alterations to elevations (Lawful Development Certificate - Proposed)
-
26/00978/CLP Status unknown
90 Tudor Gardens Shoeburyness Southend-on-sea Essex SS3 9JH
Hip to gable roof extension and dormer to rear and rooflights to front to form habitable accommodation in the loftspace (Certificate of Lawful Development - Proposed)