Planning application
10 Park Avenue Thornaby Stockton-on-Tees TS17 7JN
Works: Extension Loft or dormer
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Certificate of lawfulness for the erection of a dormer extension to the side. (loft conversion)
As published by the council, reference 26/1538/CPL
Application record
- Reference
- 26/1538/CPL
- Type
- Certificate Proposed Lawful Use/Dev
- Status
- Awaiting decision
- Received
- 10 Aug 2026
- Validated
- 12 Aug 2026
- Ward
- Mandale & Victoria
- Parish
- Thornaby Town Council
- Decision by
- Delegated
- Postcode
- TS17 7JN
Timeline
Dates from the published record
-
10 Aug 2026
Received by Stockton-on-Tees
-
12 Aug 2026
Validated
Checked as complete and ready for consideration.
-
17 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 7 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Stockton-on-Tees took a median of 59 days over the applications it decided in the last year.
Documents
Plans, drawings, consultee responses and the officer's report
7 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 happens while it is decided
This application is with Stockton-on-Tees for determination, against a statutory target of eight weeks. Over the last year Stockton-on-Tees decided lawful development applications in a median of 58 days. More in our guide to how long planning decisions take.
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
-
32 Heslop Street Thornaby Stockton-On-Tees TS17 7HA
Certificate of lawfulness for the proposed change of use from dwellinghouse (C3) to a 5no bedroom HMO (C4) (for no more than six persons living together with shared facilities) (Window/door alterations to ground floor rear)
Granted Lawful development Windows or glazing 12 docsDomestic -
108 Acklam Road Stockton-on-Tees TS17 7JR
95% historically approved · decision due ~21 Aug
Proposed conversion of existing garage to storage area and cold room for grocery business
Awaiting decision Lawful development 8 docs -
3 Imperial Avenue Thornaby TS17 7JG
Erection of extension to side, rear and front at ground floor under existing car port extension to include canopy to front
Granted Full applications Extension 13 docs -
25 Imperial Avenue Thornaby Stockton-on-Tees TS17 7JG
Erection of single storey rear extension.
Granted Full applications Extension 7 docsSmall domestic -
116 Lanehouse Road Thornaby Stockton-on-Tees TS17 8EA
Erection of a detached single storey garage to the principal elevation.
Refused Full applications 6 docsSmall domestic -
37 Mansfield Avenue Thornaby Stockton-on-Tees TS17 7EG
Certificate of lawfulness for the change of use to a house in multiple occupation (for no more than six persons living together with shared facilities).
Granted Lawful development 14 docs
Other lawful development applications
In Stockton-on-Tees
-
26/1572/CPE Awaiting decision
The Barn Town End Farm Darlington Road Elton Stockton-On-Tees TS21 1AG
Certificate of lawfulness application for the existing use of land as residential curtilage.
-
26/1557/CPL Awaiting decision
20 Westmoreland Grove Norton Stockton-On-Tees TS20 1PA
Certificate of lawfulness for the erection of a dormer extension to the rear and roof light to the front and side (loft conversion).
-
26/1035/CPE Refused
38 Keithlands Avenue Norton Stockton-on-Tees TS20 2QP
Certificate of lawfulness application for the existing use as a single dwellinghouse (C3)
-
26/1212/CPL Granted
4 Bede Close Stockton-on-Tees TS19 9ES
Certificate of lawfulness for the proposed change of use from dwellinghouse (C3) for one person living in care (use class C3(b))
-
26/1532/CPL Awaiting decision
2 Scarthwood Close Ingleby Barwick Stockton-on-Tees TS17 0UL
Certificate of lawfulness for the erection of 2no single storey extensions to the rear.