Planning application
DC/26/1514/CLP
29 Seaward Avenue Leiston Suffolk IP16 4BL
Proposal
Certificate of Lawful use (Proposed) - Erection of a single storey rear extension to the existing semi-detached dwellinghouse. The extension will be located to the rear of the property and will project 2.9m from the original rear wall, as shown on the submitted drawings. It will extend across part of the rear elevation and will have a flat roof with a maximum external height of 2.9m measured from ground level. The development will be constructed using materials of a similar appearance to the existing dwellinghouse. No changes to access, parking, or boundary treatments are proposed.
As published by the council, reference DC/26/1514/CLP
Timeline
Dates from the published record
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22 Apr 2026
Received by East Suffolk
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19 Jun 2026
Decision issued: Application Permitted
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24 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
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.
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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DC/26/1941/FUL Awaiting decision
35 Garrett Crescent Leiston Suffolk IP16 4LF
Demolition of existing garage and enlargement of existing single storey rear extension to create new two storey rear extension, and associated changes to fenestration.
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DC/26/2629/FUL Awaiting decision
The Limes 24 King Georges Avenue Leiston Suffolk IP16 4JG
Conversion of 2 storey dwelling and garage to create 10 bed Aparthotel
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C/02/0849 Granted
13 Red House Lane Leiston
Erection of conservatory
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DC/26/2279/CLP Granted
38 King Georges Avenue Leiston Suffolk IP16 4JG
Certificate of Lawful Use (Proposed) - Change of use from a Class C3 dwellinghouse to a small House in Multiple Occupation (Class C4). The proposal comprises internal layout alterations only, with no significant external alterations. No machinery or plant will be installed, and no commercial or industrial processes will be undertaken. The property will remain in residential use on a normal 24-hour basis. Associated internal alterations and minor external renovation works only, required in connection with the change of use from a Class C3 dwellinghouse to a Class C4 House in Multiple Occupation (for up to three occupants). No alterations are proposed to the existing access, parking arrangements, hardstanding, boundary treatments, drainage, or the external footprint of the building.
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DC/26/1068/DRC Granted
Crown House King Georges Avenue Leiston Suffolk IP16 4JX
Discharge of Condition No. 7 of DC/23/3550/FUL - Details of conversion works to the former Crown Hotel public house to form 11 bed HMO following planning appeal for change of use, APP/X3540/W/3308126 The Crown, King Georges Avenue, Leistion IP10 4JX - Electric vehicle charging points
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DC/26/1251/CLE Awaiting decision
11 Aldeburgh Road Leiston Suffolk IP16 4JY
Lawful Development Certificate(Existing) - Use of the dwellinghouse as a 6-bedroom HMO and the erection of an incidental outbuilding (substantially completed).
Other lawful development applications
In East Suffolk
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DC/26/2553/CLP Awaiting decision
10 Waveney Road Beccles Suffolk NR34 9NW
Certificate of Lawful Use (Proposed) - Garden room. This will be to the rear left of the garden as you look from the front of the house. It is 6870mm wide, 3150mm deep an 2465mm high. It will be used as an office/bar. No new access is required. Ground screws will be used for the base.
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DC/26/2507/CLP Awaiting decision
Birds Eye Ltd Whapload Road Lowestoft Suffolk NR32 1XQ
Certificate of Lawful Use (Proposed) - Building of a new extension to the existing Denes 3 factory. This building is to house a new goods lift only.
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DC/26/2502/CLE Awaiting decision
Mill Farm Field Land Bounded By The Street And Station Road Somerleyton Suffolk NR32 5QL
Certificate of Lawful Use (Existing) - Commencement of Planning Application DC/21/4745/FUL, as amended by DC/25/4252/AME and DC/26/0312/AME, which granted permission for: Phased development of the existing agricultural field site known as Mill Farm Field to provide thirty-five homes, with associated access roads, parking and landscaping including the creation of two new public green open spaces.
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DC/26/2490/CLP Awaiting decision
Elmhurst 76 Thoroughfare Woodbridge Suffolk IP12 1AL
Certificate of Lawful Use (Proposed) - Use of the land to site a mobile home for ancillary use to the main dwellinghouse
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DC/26/2489/CLE Awaiting decision
7 - 9 America House Base Business Park Rendlesham Suffolk IP12 2TZ
Certificate of Lawful Use (Existing) - These units 7/9 America House were leased by the Cake Shop Bakery from January 2017 to July 2021 . Then it was taken over by Harvey and Co ( SRH Allen LTD ) from August 2021 to the 13th of May 2026. Both leases were done by Solicitors. Both baked bread and sold there products and had a cafe . Honey and Harvey ( Grentian LTD ) are taking a ten year lease on the property , to also use this as a cafe and a bakery .